./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/lunarlander_69_unsafe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/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_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/neural-networks/lunarlander_69_unsafe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/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_f982806e-bb88-4e43-8571-ba3d908c08b8/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 49e4951b8a4f24e71b0f62dc3f11501ef97a193b57359cda3849a77e87e9a721 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:46:17,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:46:17,644 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:46:17,650 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:46:17,651 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:46:17,695 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:46:17,697 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:46:17,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:46:17,699 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:46:17,704 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:46:17,704 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:46:17,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:46:17,706 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:46:17,708 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:46:17,708 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:46:17,709 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:46:17,709 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:46:17,710 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:46:17,710 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:46:17,711 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:46:17,712 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:46:17,713 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:46:17,714 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:46:17,714 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:46:17,714 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:46:17,715 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:46:17,715 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:46:17,716 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:46:17,716 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:46:17,717 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:46:17,717 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:46:17,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:46:17,718 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:46:17,718 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:46:17,719 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:46:17,719 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:46:17,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:46:17,719 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:46:17,720 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:46:17,720 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:46:17,720 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:46:17,721 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:46:17,721 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_f982806e-bb88-4e43-8571-ba3d908c08b8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 49e4951b8a4f24e71b0f62dc3f11501ef97a193b57359cda3849a77e87e9a721 [2023-11-26 10:46:17,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:46:18,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:46:18,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:46:18,024 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:46:18,024 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:46:18,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/neural-networks/lunarlander_69_unsafe.c-amalgamation.i [2023-11-26 10:46:21,113 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:46:21,595 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:46:21,597 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/sv-benchmarks/c/neural-networks/lunarlander_69_unsafe.c-amalgamation.i [2023-11-26 10:46:21,634 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/data/057eb14df/0aee20a24e4b4140899e551a09920ca6/FLAGdda926f4b [2023-11-26 10:46:21,653 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/data/057eb14df/0aee20a24e4b4140899e551a09920ca6 [2023-11-26 10:46:21,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:46:21,662 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:46:21,666 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:46:21,667 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:46:21,672 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:46:21,675 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:46:21" (1/1) ... [2023-11-26 10:46:21,676 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5148ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:21, skipping insertion in model container [2023-11-26 10:46:21,676 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:46:21" (1/1) ... [2023-11-26 10:46:21,794 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:46:22,764 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_f982806e-bb88-4e43-8571-ba3d908c08b8/sv-benchmarks/c/neural-networks/lunarlander_69_unsafe.c-amalgamation.i[64319,64332] [2023-11-26 10:46:23,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:46:23,294 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:46:23,385 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_f982806e-bb88-4e43-8571-ba3d908c08b8/sv-benchmarks/c/neural-networks/lunarlander_69_unsafe.c-amalgamation.i[64319,64332] [2023-11-26 10:46:23,490 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:46:23,904 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:46:23,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:23 WrapperNode [2023-11-26 10:46:23,905 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:46:23,906 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:46:23,907 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:46:23,907 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:46:23,914 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:23" (1/1) ... [2023-11-26 10:46:24,026 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:23" (1/1) ... [2023-11-26 10:46:24,258 INFO L138 Inliner]: procedures = 620, calls = 5148, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5469 [2023-11-26 10:46:24,259 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:46:24,259 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:46:24,260 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:46:24,260 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:46:24,272 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:23" (1/1) ... [2023-11-26 10:46:24,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:23" (1/1) ... [2023-11-26 10:46:24,410 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:23" (1/1) ... [2023-11-26 10:46:24,494 INFO L175 MemorySlicer]: Split 5123 memory accesses to 12 slices as follows [2, 7, 513, 65, 4097, 65, 25, 257, 5, 14, 70, 3]. 80 percent of accesses are in the largest equivalence class. The 5077 initializations are split as follows [2, 7, 512, 64, 4096, 64, 0, 256, 4, 8, 64, 0]. The 14 writes are split as follows [0, 0, 0, 0, 0, 0, 8, 0, 0, 3, 2, 1]. [2023-11-26 10:46:24,495 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:23" (1/1) ... [2023-11-26 10:46:24,495 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:23" (1/1) ... [2023-11-26 10:46:24,730 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:23" (1/1) ... [2023-11-26 10:46:24,753 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:23" (1/1) ... [2023-11-26 10:46:24,790 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:23" (1/1) ... [2023-11-26 10:46:24,812 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:23" (1/1) ... [2023-11-26 10:46:24,873 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:46:24,875 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:46:24,875 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:46:24,876 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:46:24,877 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:23" (1/1) ... [2023-11-26 10:46:24,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:46:24,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:24,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:46:24,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:46:24,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-26 10:46:24,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-26 10:46:24,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-26 10:46:24,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-26 10:46:24,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-11-26 10:46:24,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2023-11-26 10:46:24,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2023-11-26 10:46:24,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2023-11-26 10:46:24,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2023-11-26 10:46:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2023-11-26 10:46:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2023-11-26 10:46:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2023-11-26 10:46:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:46:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2023-11-26 10:46:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2023-11-26 10:46:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2023-11-26 10:46:24,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2023-11-26 10:46:24,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2023-11-26 10:46:24,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2023-11-26 10:46:24,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2023-11-26 10:46:24,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2023-11-26 10:46:24,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2023-11-26 10:46:24,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2023-11-26 10:46:24,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2023-11-26 10:46:24,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2023-11-26 10:46:24,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-11-26 10:46:24,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-11-26 10:46:24,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2023-11-26 10:46:24,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2023-11-26 10:46:24,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2023-11-26 10:46:24,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2023-11-26 10:46:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2023-11-26 10:46:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2023-11-26 10:46:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2023-11-26 10:46:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2023-11-26 10:46:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2023-11-26 10:46:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2023-11-26 10:46:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:46:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:46:24,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:46:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:46:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:46:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:46:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:46:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:46:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 10:46:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 10:46:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 10:46:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-26 10:46:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-26 10:46:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-26 10:46:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-26 10:46:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-26 10:46:25,248 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:46:25,250 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:46:34,466 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:46:35,107 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:46:35,107 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-11-26 10:46:35,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:46:35 BoogieIcfgContainer [2023-11-26 10:46:35,108 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:46:35,111 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:46:35,112 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:46:35,115 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:46:35,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:46:21" (1/3) ... [2023-11-26 10:46:35,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24db368c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:46:35, skipping insertion in model container [2023-11-26 10:46:35,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:23" (2/3) ... [2023-11-26 10:46:35,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24db368c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:46:35, skipping insertion in model container [2023-11-26 10:46:35,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:46:35" (3/3) ... [2023-11-26 10:46:35,120 INFO L112 eAbstractionObserver]: Analyzing ICFG lunarlander_69_unsafe.c-amalgamation.i [2023-11-26 10:46:35,141 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:46:35,141 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:46:35,204 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:46:35,212 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;@7349e48a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:46:35,213 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:46:35,218 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 56 states have (on average 1.7857142857142858) internal successors, (100), 57 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:35,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-26 10:46:35,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:35,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:35,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:35,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:35,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1219428462, now seen corresponding path program 1 times [2023-11-26 10:46:35,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:35,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557804353] [2023-11-26 10:46:35,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:35,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:36,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:36,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:36,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557804353] [2023-11-26 10:46:36,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557804353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:36,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:36,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:46:36,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874926715] [2023-11-26 10:46:36,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:36,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:46:36,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:36,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:46:36,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:46:36,713 INFO L87 Difference]: Start difference. First operand has 58 states, 56 states have (on average 1.7857142857142858) internal successors, (100), 57 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:37,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:37,224 INFO L93 Difference]: Finished difference Result 113 states and 195 transitions. [2023-11-26 10:46:37,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:46:37,227 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-11-26 10:46:37,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:37,235 INFO L225 Difference]: With dead ends: 113 [2023-11-26 10:46:37,235 INFO L226 Difference]: Without dead ends: 56 [2023-11-26 10:46:37,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 10:46:37,242 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:37,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:46:37,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-26 10:46:37,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-26 10:46:37,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.4) internal successors, (77), 55 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:37,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2023-11-26 10:46:37,280 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 39 [2023-11-26 10:46:37,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:37,281 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2023-11-26 10:46:37,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:37,281 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2023-11-26 10:46:37,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-26 10:46:37,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:37,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:37,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:46:37,284 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:37,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:37,284 INFO L85 PathProgramCache]: Analyzing trace with hash -481557306, now seen corresponding path program 1 times [2023-11-26 10:46:37,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:37,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602117212] [2023-11-26 10:46:37,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:37,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:38,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:38,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:38,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602117212] [2023-11-26 10:46:38,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602117212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:38,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:38,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:46:38,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559023638] [2023-11-26 10:46:38,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:38,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:46:38,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:38,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:46:38,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:46:38,432 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:39,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:39,127 INFO L93 Difference]: Finished difference Result 104 states and 143 transitions. [2023-11-26 10:46:39,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:46:39,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-11-26 10:46:39,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:39,129 INFO L225 Difference]: With dead ends: 104 [2023-11-26 10:46:39,129 INFO L226 Difference]: Without dead ends: 56 [2023-11-26 10:46:39,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:46:39,131 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:39,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:46:39,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-26 10:46:39,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-26 10:46:39,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 55 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:39,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2023-11-26 10:46:39,140 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 39 [2023-11-26 10:46:39,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:39,140 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2023-11-26 10:46:39,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:39,141 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2023-11-26 10:46:39,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-26 10:46:39,143 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:39,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:39,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:46:39,143 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:39,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:39,144 INFO L85 PathProgramCache]: Analyzing trace with hash -756316920, now seen corresponding path program 1 times [2023-11-26 10:46:39,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:39,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771575198] [2023-11-26 10:46:39,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:39,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:40,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:40,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:40,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771575198] [2023-11-26 10:46:40,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771575198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:40,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:40,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:46:40,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129809353] [2023-11-26 10:46:40,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:40,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:46:40,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:40,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:46:40,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:46:40,712 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:41,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:41,415 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2023-11-26 10:46:41,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:46:41,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-11-26 10:46:41,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:41,417 INFO L225 Difference]: With dead ends: 87 [2023-11-26 10:46:41,417 INFO L226 Difference]: Without dead ends: 57 [2023-11-26 10:46:41,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:46:41,419 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:41,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:46:41,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-26 10:46:41,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-11-26 10:46:41,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.375) internal successors, (77), 56 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:41,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 77 transitions. [2023-11-26 10:46:41,427 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 77 transitions. Word has length 39 [2023-11-26 10:46:41,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:41,428 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 77 transitions. [2023-11-26 10:46:41,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:41,428 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 77 transitions. [2023-11-26 10:46:41,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-26 10:46:41,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:41,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:41,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:46:41,430 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:41,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:41,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1790905389, now seen corresponding path program 1 times [2023-11-26 10:46:41,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:41,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122857059] [2023-11-26 10:46:41,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:41,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:43,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:43,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:43,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122857059] [2023-11-26 10:46:43,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122857059] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:43,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070711849] [2023-11-26 10:46:43,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:43,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:43,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:43,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:43,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:46:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:45,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 6102 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:46:45,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:45,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:45,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:46:45,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:46:45,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070711849] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:45,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:46:45,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-26 10:46:45,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765428310] [2023-11-26 10:46:45,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:45,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:46:45,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:45,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:46:45,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:46:45,215 INFO L87 Difference]: Start difference. First operand 57 states and 77 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:45,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:45,673 INFO L93 Difference]: Finished difference Result 78 states and 106 transitions. [2023-11-26 10:46:45,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:46:45,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-11-26 10:46:45,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:45,675 INFO L225 Difference]: With dead ends: 78 [2023-11-26 10:46:45,675 INFO L226 Difference]: Without dead ends: 58 [2023-11-26 10:46:45,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:46:45,677 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:45,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 108 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:46:45,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-26 10:46:45,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-11-26 10:46:45,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.368421052631579) internal successors, (78), 57 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:45,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2023-11-26 10:46:45,684 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 40 [2023-11-26 10:46:45,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:45,684 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2023-11-26 10:46:45,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:45,685 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2023-11-26 10:46:45,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-26 10:46:45,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:45,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:45,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:45,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:45,907 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:45,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:45,908 INFO L85 PathProgramCache]: Analyzing trace with hash -793809956, now seen corresponding path program 1 times [2023-11-26 10:46:45,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:45,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910044192] [2023-11-26 10:46:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:45,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:47,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:46:47,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:47,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910044192] [2023-11-26 10:46:47,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910044192] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:47,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648385879] [2023-11-26 10:46:47,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:47,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:47,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:47,307 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:47,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:46:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:49,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 6120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:46:49,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:49,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:46:49,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:46:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:46:49,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648385879] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:49,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:46:49,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-26 10:46:49,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408282493] [2023-11-26 10:46:49,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:49,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:46:49,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:49,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:46:49,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:46:49,216 INFO L87 Difference]: Start difference. First operand 58 states and 78 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:49,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:49,873 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2023-11-26 10:46:49,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:46:49,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-11-26 10:46:49,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:49,875 INFO L225 Difference]: With dead ends: 69 [2023-11-26 10:46:49,876 INFO L226 Difference]: Without dead ends: 59 [2023-11-26 10:46:49,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:46:49,880 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:49,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 108 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:46:49,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-26 10:46:49,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-26 10:46:49,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.3620689655172413) internal successors, (79), 58 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:49,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2023-11-26 10:46:49,890 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 79 transitions. Word has length 43 [2023-11-26 10:46:49,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:49,891 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 79 transitions. [2023-11-26 10:46:49,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:49,891 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 79 transitions. [2023-11-26 10:46:49,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-26 10:46:49,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:49,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:49,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:50,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:50,119 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:50,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:50,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1367907231, now seen corresponding path program 1 times [2023-11-26 10:46:50,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:50,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228260731] [2023-11-26 10:46:50,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:50,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:46:51,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:51,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228260731] [2023-11-26 10:46:51,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228260731] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:51,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108145515] [2023-11-26 10:46:51,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:51,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:51,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:51,597 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:51,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:46:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:53,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 6138 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 10:46:53,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:53,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:46:53,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:46:53,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:46:53,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108145515] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:53,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:46:53,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-26 10:46:53,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000545090] [2023-11-26 10:46:53,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:53,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:46:53,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:53,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:46:53,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:46:53,366 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:53,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:53,835 INFO L93 Difference]: Finished difference Result 86 states and 116 transitions. [2023-11-26 10:46:53,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:46:53,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-11-26 10:46:53,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:53,837 INFO L225 Difference]: With dead ends: 86 [2023-11-26 10:46:53,837 INFO L226 Difference]: Without dead ends: 60 [2023-11-26 10:46:53,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:46:53,838 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:53,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:46:53,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-26 10:46:53,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-11-26 10:46:53,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 59 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:53,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2023-11-26 10:46:53,846 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 46 [2023-11-26 10:46:53,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:53,846 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2023-11-26 10:46:53,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:53,847 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2023-11-26 10:46:53,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 10:46:53,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:53,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:53,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:54,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:54,055 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:54,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:54,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1170803542, now seen corresponding path program 1 times [2023-11-26 10:46:54,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:54,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517047805] [2023-11-26 10:46:54,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:54,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:55,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:46:55,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:55,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517047805] [2023-11-26 10:46:55,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517047805] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:55,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613088157] [2023-11-26 10:46:55,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:55,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:55,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:55,659 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:55,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:46:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:57,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 6144 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 10:46:57,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:57,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:46:57,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:46:57,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:46:57,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613088157] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:57,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:46:57,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-26 10:46:57,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879112007] [2023-11-26 10:46:57,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:57,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:46:57,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:57,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:46:57,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:46:57,426 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:58,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:58,039 INFO L93 Difference]: Finished difference Result 76 states and 101 transitions. [2023-11-26 10:46:58,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:46:58,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-11-26 10:46:58,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:58,040 INFO L225 Difference]: With dead ends: 76 [2023-11-26 10:46:58,040 INFO L226 Difference]: Without dead ends: 61 [2023-11-26 10:46:58,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:46:58,042 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:58,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:46:58,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-26 10:46:58,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-11-26 10:46:58,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.35) internal successors, (81), 60 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:58,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2023-11-26 10:46:58,049 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 49 [2023-11-26 10:46:58,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:58,049 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2023-11-26 10:46:58,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:58,050 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2023-11-26 10:46:58,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-26 10:46:58,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:58,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:58,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:58,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:58,252 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:58,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:58,252 INFO L85 PathProgramCache]: Analyzing trace with hash 559835403, now seen corresponding path program 1 times [2023-11-26 10:46:58,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:58,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930953526] [2023-11-26 10:46:58,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:58,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:59,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:46:59,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:59,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930953526] [2023-11-26 10:46:59,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930953526] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:59,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449110721] [2023-11-26 10:46:59,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:59,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:59,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:59,479 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:59,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:47:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:01,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 6150 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 10:47:01,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:47:01,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:47:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 10:47:01,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449110721] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 10:47:01,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:47:01,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-26 10:47:01,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740366931] [2023-11-26 10:47:01,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:01,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:47:01,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:01,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:47:01,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:47:01,227 INFO L87 Difference]: Start difference. First operand 61 states and 81 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:01,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:01,724 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2023-11-26 10:47:01,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:47:01,725 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-11-26 10:47:01,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:01,725 INFO L225 Difference]: With dead ends: 66 [2023-11-26 10:47:01,725 INFO L226 Difference]: Without dead ends: 62 [2023-11-26 10:47:01,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:47:01,727 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:01,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:47:01,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-26 10:47:01,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-26 10:47:01,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.3442622950819672) internal successors, (82), 61 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:01,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2023-11-26 10:47:01,734 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 52 [2023-11-26 10:47:01,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:01,735 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2023-11-26 10:47:01,735 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:01,735 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2023-11-26 10:47:01,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-26 10:47:01,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:01,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:01,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:01,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:01,943 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:01,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:01,943 INFO L85 PathProgramCache]: Analyzing trace with hash 948688438, now seen corresponding path program 1 times [2023-11-26 10:47:01,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:01,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243996750] [2023-11-26 10:47:01,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:01,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:03,140 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 10:47:03,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:03,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243996750] [2023-11-26 10:47:03,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243996750] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:47:03,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170629932] [2023-11-26 10:47:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:03,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:03,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:03,142 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:47:03,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:47:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:04,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 6156 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 10:47:04,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:04,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 10:47:04,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:47:04,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 10:47:04,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170629932] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:47:04,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:47:04,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-11-26 10:47:04,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411169202] [2023-11-26 10:47:04,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:47:04,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:47:04,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:04,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:47:04,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:47:04,976 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:06,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:06,090 INFO L93 Difference]: Finished difference Result 107 states and 146 transitions. [2023-11-26 10:47:06,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:47:06,091 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-26 10:47:06,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:06,092 INFO L225 Difference]: With dead ends: 107 [2023-11-26 10:47:06,092 INFO L226 Difference]: Without dead ends: 72 [2023-11-26 10:47:06,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:47:06,094 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 13 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:06,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 273 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 10:47:06,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-26 10:47:06,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-11-26 10:47:06,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 71 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:06,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2023-11-26 10:47:06,102 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 55 [2023-11-26 10:47:06,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:06,102 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2023-11-26 10:47:06,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:06,102 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2023-11-26 10:47:06,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-26 10:47:06,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:06,104 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:06,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f982806e-bb88-4e43-8571-ba3d908c08b8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0