./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-47.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-47.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --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 23abccf904bd3af5b349907c0c1fe36b3f043e0f305d7494258ac56b80497131 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:43:27,335 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:43:27,408 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:43:27,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:43:27,415 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:43:27,446 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:43:27,447 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:43:27,447 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:43:27,448 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:43:27,449 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:43:27,449 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:43:27,450 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:43:27,451 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:43:27,451 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:43:27,452 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:43:27,452 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:43:27,453 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:43:27,454 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:43:27,454 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:43:27,455 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:43:27,455 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:43:27,456 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:43:27,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:43:27,457 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:43:27,458 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:43:27,458 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:43:27,459 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:43:27,459 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:43:27,460 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:43:27,460 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:43:27,461 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:43:27,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:27,462 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:43:27,462 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:43:27,463 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:43:27,463 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:43:27,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:43:27,464 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:43:27,464 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:43:27,464 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:43:27,464 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:43:27,465 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:43:27,465 INFO L153 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_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23abccf904bd3af5b349907c0c1fe36b3f043e0f305d7494258ac56b80497131 [2023-11-26 10:43:27,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:43:27,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:43:27,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:43:27,834 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:43:27,834 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:43:27,835 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-47.i [2023-11-26 10:43:30,938 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:43:31,197 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:43:31,200 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-47.i [2023-11-26 10:43:31,216 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/data/b3e6b89fc/426a1326487f443096edc989cc5699bf/FLAG4597e378f [2023-11-26 10:43:31,242 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/data/b3e6b89fc/426a1326487f443096edc989cc5699bf [2023-11-26 10:43:31,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:43:31,252 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:43:31,254 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:31,254 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:43:31,260 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:43:31,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:31,265 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191e4fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31, skipping insertion in model container [2023-11-26 10:43:31,265 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:31,347 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:43:31,532 WARN L240 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_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-47.i[919,932] [2023-11-26 10:43:31,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:31,645 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:43:31,658 WARN L240 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_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-47.i[919,932] [2023-11-26 10:43:31,704 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:31,732 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:43:31,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31 WrapperNode [2023-11-26 10:43:31,732 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:31,734 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:31,734 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:43:31,734 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:43:31,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:31,764 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:31,854 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 323 [2023-11-26 10:43:31,854 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:31,855 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:43:31,856 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:43:31,856 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:43:31,869 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:31,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:31,875 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:31,901 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 10:43:31,902 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:31,902 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:31,937 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:31,944 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:31,963 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:31,968 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:31,978 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:43:31,988 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:43:31,989 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:43:31,989 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:43:31,990 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (1/1) ... [2023-11-26 10:43:31,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:32,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:32,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:32,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:43:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:43:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:43:32,081 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:43:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:43:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:43:32,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:43:32,217 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:43:32,220 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:43:32,962 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:43:32,994 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:43:32,994 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:43:32,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:32 BoogieIcfgContainer [2023-11-26 10:43:32,995 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:43:32,998 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:43:32,998 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:43:33,002 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:43:33,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:43:31" (1/3) ... [2023-11-26 10:43:33,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1c7eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:33, skipping insertion in model container [2023-11-26 10:43:33,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:31" (2/3) ... [2023-11-26 10:43:33,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1c7eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:33, skipping insertion in model container [2023-11-26 10:43:33,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:32" (3/3) ... [2023-11-26 10:43:33,005 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-47.i [2023-11-26 10:43:33,026 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:43:33,026 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:43:33,098 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:43:33,108 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=LoopHeads, 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;@3d79c279, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:43:33,108 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:43:33,113 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 80 states have (on average 1.6) internal successors, (128), 81 states have internal predecessors, (128), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-26 10:43:33,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-11-26 10:43:33,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:33,148 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:33,149 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:33,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:33,157 INFO L85 PathProgramCache]: Analyzing trace with hash 37207400, now seen corresponding path program 1 times [2023-11-26 10:43:33,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:33,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437946912] [2023-11-26 10:43:33,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:33,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:33,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:33,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437946912] [2023-11-26 10:43:33,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 10:43:33,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291620456] [2023-11-26 10:43:33,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:33,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:33,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:33,505 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:33,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:43:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:33,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 10:43:33,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:33,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2023-11-26 10:43:33,963 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:33,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291620456] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:33,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:33,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:33,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189531936] [2023-11-26 10:43:33,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:33,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:43:33,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:34,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:43:34,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:43:34,031 INFO L87 Difference]: Start difference. First operand has 117 states, 80 states have (on average 1.6) internal successors, (128), 81 states have internal predecessors, (128), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-26 10:43:34,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:34,106 INFO L93 Difference]: Finished difference Result 231 states and 424 transitions. [2023-11-26 10:43:34,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:43:34,109 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 217 [2023-11-26 10:43:34,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:34,119 INFO L225 Difference]: With dead ends: 231 [2023-11-26 10:43:34,119 INFO L226 Difference]: Without dead ends: 115 [2023-11-26 10:43:34,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:43:34,135 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:34,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:43:34,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-26 10:43:34,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-11-26 10:43:34,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 79 states have (on average 1.5063291139240507) internal successors, (119), 79 states have internal predecessors, (119), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-26 10:43:34,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 187 transitions. [2023-11-26 10:43:34,195 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 187 transitions. Word has length 217 [2023-11-26 10:43:34,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:34,195 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 187 transitions. [2023-11-26 10:43:34,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-26 10:43:34,196 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 187 transitions. [2023-11-26 10:43:34,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-11-26 10:43:34,202 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:34,202 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:34,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:34,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 10:43:34,410 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:34,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:34,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1110221104, now seen corresponding path program 1 times [2023-11-26 10:43:34,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:34,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781803292] [2023-11-26 10:43:34,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:34,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:34,528 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:34,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150814834] [2023-11-26 10:43:34,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:34,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:34,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:34,536 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:34,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:43:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:34,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 10:43:34,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:35,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 285 proven. 93 refuted. 0 times theorem prover too weak. 1866 trivial. 0 not checked. [2023-11-26 10:43:35,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:36,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 6 proven. 93 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2023-11-26 10:43:36,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:36,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781803292] [2023-11-26 10:43:36,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:36,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150814834] [2023-11-26 10:43:36,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150814834] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:36,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:43:36,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-26 10:43:36,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519432671] [2023-11-26 10:43:36,338 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:36,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 10:43:36,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:36,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 10:43:36,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:43:36,347 INFO L87 Difference]: Start difference. First operand 115 states and 187 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 4 states have call successors, (68), 3 states have call predecessors, (68), 5 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) [2023-11-26 10:43:37,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:37,212 INFO L93 Difference]: Finished difference Result 443 states and 723 transitions. [2023-11-26 10:43:37,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 10:43:37,213 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 4 states have call successors, (68), 3 states have call predecessors, (68), 5 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) Word has length 218 [2023-11-26 10:43:37,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:37,219 INFO L225 Difference]: With dead ends: 443 [2023-11-26 10:43:37,219 INFO L226 Difference]: Without dead ends: 329 [2023-11-26 10:43:37,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2023-11-26 10:43:37,222 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 441 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:37,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 901 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:43:37,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-11-26 10:43:37,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 288. [2023-11-26 10:43:37,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 213 states have (on average 1.5352112676056338) internal successors, (327), 214 states have internal predecessors, (327), 70 states have call successors, (70), 4 states have call predecessors, (70), 4 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-26 10:43:37,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 467 transitions. [2023-11-26 10:43:37,278 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 467 transitions. Word has length 218 [2023-11-26 10:43:37,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:37,280 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 467 transitions. [2023-11-26 10:43:37,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 4 states have call successors, (68), 3 states have call predecessors, (68), 5 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) [2023-11-26 10:43:37,280 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 467 transitions. [2023-11-26 10:43:37,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-11-26 10:43:37,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:37,286 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:37,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:37,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-26 10:43:37,494 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:37,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:37,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1499962897, now seen corresponding path program 1 times [2023-11-26 10:43:37,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:37,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393111459] [2023-11-26 10:43:37,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:37,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:37,563 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:37,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [651906523] [2023-11-26 10:43:37,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:37,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:37,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:37,581 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:37,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:43:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:37,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:43:37,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:37,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-11-26 10:43:37,826 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:37,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:37,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393111459] [2023-11-26 10:43:37,827 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:37,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651906523] [2023-11-26 10:43:37,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651906523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:37,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:37,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:43:37,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199026236] [2023-11-26 10:43:37,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:37,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:43:37,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:37,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:43:37,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:37,831 INFO L87 Difference]: Start difference. First operand 288 states and 467 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-26 10:43:38,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:38,014 INFO L93 Difference]: Finished difference Result 862 states and 1399 transitions. [2023-11-26 10:43:38,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:43:38,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 219 [2023-11-26 10:43:38,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:38,027 INFO L225 Difference]: With dead ends: 862 [2023-11-26 10:43:38,027 INFO L226 Difference]: Without dead ends: 575 [2023-11-26 10:43:38,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:38,032 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 168 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:38,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 465 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:43:38,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2023-11-26 10:43:38,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 414. [2023-11-26 10:43:38,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 339 states have (on average 1.5457227138643068) internal successors, (524), 340 states have internal predecessors, (524), 70 states have call successors, (70), 4 states have call predecessors, (70), 4 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-26 10:43:38,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 664 transitions. [2023-11-26 10:43:38,149 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 664 transitions. Word has length 219 [2023-11-26 10:43:38,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:38,153 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 664 transitions. [2023-11-26 10:43:38,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-26 10:43:38,153 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 664 transitions. [2023-11-26 10:43:38,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-11-26 10:43:38,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:38,162 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:38,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:38,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:38,369 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:38,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:38,370 INFO L85 PathProgramCache]: Analyzing trace with hash 305475437, now seen corresponding path program 1 times [2023-11-26 10:43:38,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:38,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313016141] [2023-11-26 10:43:38,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:38,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:38,450 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:38,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000562984] [2023-11-26 10:43:38,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:38,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:38,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:38,456 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:38,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:43:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:38,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:43:38,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:38,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-11-26 10:43:38,667 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:38,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:38,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313016141] [2023-11-26 10:43:38,667 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:38,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000562984] [2023-11-26 10:43:38,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000562984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:38,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:38,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:43:38,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112039625] [2023-11-26 10:43:38,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:38,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:43:38,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:38,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:43:38,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:38,673 INFO L87 Difference]: Start difference. First operand 414 states and 664 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-26 10:43:38,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:38,763 INFO L93 Difference]: Finished difference Result 1130 states and 1795 transitions. [2023-11-26 10:43:38,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:43:38,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 219 [2023-11-26 10:43:38,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:38,770 INFO L225 Difference]: With dead ends: 1130 [2023-11-26 10:43:38,770 INFO L226 Difference]: Without dead ends: 717 [2023-11-26 10:43:38,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:38,774 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 167 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:38,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 411 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:43:38,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2023-11-26 10:43:38,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 475. [2023-11-26 10:43:38,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 400 states have (on average 1.485) internal successors, (594), 401 states have internal predecessors, (594), 70 states have call successors, (70), 4 states have call predecessors, (70), 4 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-26 10:43:38,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 734 transitions. [2023-11-26 10:43:38,862 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 734 transitions. Word has length 219 [2023-11-26 10:43:38,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:38,863 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 734 transitions. [2023-11-26 10:43:38,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-26 10:43:38,863 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 734 transitions. [2023-11-26 10:43:38,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-11-26 10:43:38,867 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:38,867 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:38,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:39,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:39,074 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:39,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:39,074 INFO L85 PathProgramCache]: Analyzing trace with hash 760476212, now seen corresponding path program 1 times [2023-11-26 10:43:39,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:39,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310181706] [2023-11-26 10:43:39,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:39,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:39,115 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:39,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1512475] [2023-11-26 10:43:39,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:39,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:39,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:39,117 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:39,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:43:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:39,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 10:43:39,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:39,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-11-26 10:43:39,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:39,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:39,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310181706] [2023-11-26 10:43:39,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:39,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512475] [2023-11-26 10:43:39,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:39,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:39,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:43:39,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245421276] [2023-11-26 10:43:39,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:39,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:43:39,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:39,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:43:39,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:43:39,623 INFO L87 Difference]: Start difference. First operand 475 states and 734 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-26 10:43:40,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:40,116 INFO L93 Difference]: Finished difference Result 1890 states and 2935 transitions. [2023-11-26 10:43:40,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:43:40,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 220 [2023-11-26 10:43:40,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:40,127 INFO L225 Difference]: With dead ends: 1890 [2023-11-26 10:43:40,127 INFO L226 Difference]: Without dead ends: 1416 [2023-11-26 10:43:40,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:43:40,130 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 580 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:40,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 787 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:43:40,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2023-11-26 10:43:40,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 809. [2023-11-26 10:43:40,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 660 states have (on average 1.4575757575757575) internal successors, (962), 662 states have internal predecessors, (962), 140 states have call successors, (140), 8 states have call predecessors, (140), 8 states have return successors, (140), 138 states have call predecessors, (140), 140 states have call successors, (140) [2023-11-26 10:43:40,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1242 transitions. [2023-11-26 10:43:40,264 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1242 transitions. Word has length 220 [2023-11-26 10:43:40,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:40,265 INFO L495 AbstractCegarLoop]: Abstraction has 809 states and 1242 transitions. [2023-11-26 10:43:40,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-26 10:43:40,265 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1242 transitions. [2023-11-26 10:43:40,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-11-26 10:43:40,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:40,269 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:40,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:40,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:40,476 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:40,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:40,477 INFO L85 PathProgramCache]: Analyzing trace with hash 2146679606, now seen corresponding path program 1 times [2023-11-26 10:43:40,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:40,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007868098] [2023-11-26 10:43:40,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:40,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:40,533 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:40,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1065913880] [2023-11-26 10:43:40,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:40,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:40,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:40,535 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:40,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:43:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:40,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 10:43:40,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:41,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-11-26 10:43:41,503 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:41,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:41,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007868098] [2023-11-26 10:43:41,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:41,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065913880] [2023-11-26 10:43:41,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065913880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:41,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:41,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:43:41,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18281306] [2023-11-26 10:43:41,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:41,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:41,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:41,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:41,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:41,507 INFO L87 Difference]: Start difference. First operand 809 states and 1242 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-26 10:43:41,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:41,780 INFO L93 Difference]: Finished difference Result 1453 states and 2239 transitions. [2023-11-26 10:43:41,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:41,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 220 [2023-11-26 10:43:41,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:41,790 INFO L225 Difference]: With dead ends: 1453 [2023-11-26 10:43:41,790 INFO L226 Difference]: Without dead ends: 645 [2023-11-26 10:43:41,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:43:41,793 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 117 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:41,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 503 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:43:41,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-11-26 10:43:41,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 547. [2023-11-26 10:43:41,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 436 states have (on average 1.4472477064220184) internal successors, (631), 437 states have internal predecessors, (631), 104 states have call successors, (104), 6 states have call predecessors, (104), 6 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2023-11-26 10:43:41,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 839 transitions. [2023-11-26 10:43:41,862 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 839 transitions. Word has length 220 [2023-11-26 10:43:41,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:41,863 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 839 transitions. [2023-11-26 10:43:41,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-26 10:43:41,863 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 839 transitions. [2023-11-26 10:43:41,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-11-26 10:43:41,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:41,868 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:41,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:42,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:42,075 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:42,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:42,076 INFO L85 PathProgramCache]: Analyzing trace with hash -123916022, now seen corresponding path program 1 times [2023-11-26 10:43:42,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:42,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290848617] [2023-11-26 10:43:42,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:42,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:42,123 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:42,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [757163874] [2023-11-26 10:43:42,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:42,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:42,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:42,125 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:42,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 10:43:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:42,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-26 10:43:42,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:44,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 318 proven. 180 refuted. 0 times theorem prover too weak. 1746 trivial. 0 not checked. [2023-11-26 10:43:44,220 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:53,733 WARN L293 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-26 10:43:53,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 12 proven. 183 refuted. 0 times theorem prover too weak. 2049 trivial. 0 not checked. [2023-11-26 10:43:53,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:53,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290848617] [2023-11-26 10:43:53,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:53,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757163874] [2023-11-26 10:43:53,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757163874] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:53,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:43:53,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2023-11-26 10:43:53,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852739412] [2023-11-26 10:43:53,881 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:53,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-26 10:43:53,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:53,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-26 10:43:53,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2023-11-26 10:43:53,898 INFO L87 Difference]: Start difference. First operand 547 states and 839 transitions. Second operand has 20 states, 19 states have (on average 6.052631578947368) internal successors, (115), 18 states have internal predecessors, (115), 6 states have call successors, (68), 4 states have call predecessors, (68), 7 states have return successors, (68), 6 states have call predecessors, (68), 6 states have call successors, (68) [2023-11-26 10:44:01,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-26 10:44:11,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-26 10:44:23,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-26 10:44:27,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.31s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-26 10:44:28,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:28,876 INFO L93 Difference]: Finished difference Result 3138 states and 4777 transitions. [2023-11-26 10:44:28,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2023-11-26 10:44:28,877 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 6.052631578947368) internal successors, (115), 18 states have internal predecessors, (115), 6 states have call successors, (68), 4 states have call predecessors, (68), 7 states have return successors, (68), 6 states have call predecessors, (68), 6 states have call successors, (68) Word has length 221 [2023-11-26 10:44:28,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:28,895 INFO L225 Difference]: With dead ends: 3138 [2023-11-26 10:44:28,895 INFO L226 Difference]: Without dead ends: 2662 [2023-11-26 10:44:28,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5998 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=3681, Invalid=9891, Unknown=0, NotChecked=0, Total=13572 [2023-11-26 10:44:28,904 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 2203 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 2551 mSolverCounterSat, 1078 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2210 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 3631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1078 IncrementalHoareTripleChecker+Valid, 2551 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:28,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2210 Valid, 1882 Invalid, 3631 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1078 Valid, 2551 Invalid, 2 Unknown, 0 Unchecked, 25.8s Time] [2023-11-26 10:44:28,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2662 states. [2023-11-26 10:44:29,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2662 to 1053. [2023-11-26 10:44:29,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 867 states have (on average 1.4590542099192618) internal successors, (1265), 868 states have internal predecessors, (1265), 172 states have call successors, (172), 13 states have call predecessors, (172), 13 states have return successors, (172), 171 states have call predecessors, (172), 172 states have call successors, (172) [2023-11-26 10:44:29,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1609 transitions. [2023-11-26 10:44:29,208 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1609 transitions. Word has length 221 [2023-11-26 10:44:29,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:29,209 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1609 transitions. [2023-11-26 10:44:29,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.052631578947368) internal successors, (115), 18 states have internal predecessors, (115), 6 states have call successors, (68), 4 states have call predecessors, (68), 7 states have return successors, (68), 6 states have call predecessors, (68), 6 states have call successors, (68) [2023-11-26 10:44:29,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1609 transitions. [2023-11-26 10:44:29,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-11-26 10:44:29,213 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:29,213 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:29,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:29,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:29,420 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:29,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:29,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1155947656, now seen corresponding path program 1 times [2023-11-26 10:44:29,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:29,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688543997] [2023-11-26 10:44:29,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:29,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:29,454 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:29,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486239714] [2023-11-26 10:44:29,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:29,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:29,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:29,456 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:29,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cc90f6-cbd3-4a18-ace6-eab0741a27ba/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process