./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/lunarlander_71_unsafe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/neural-networks/lunarlander_71_unsafe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya --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 827966aa97f1ef0b10f5000ea004115fefca886471ee13cdd19ef0db3333c41b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:57:04,349 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:57:04,415 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:57:04,421 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:57:04,421 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:57:04,448 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:57:04,448 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:57:04,449 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:57:04,450 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:57:04,450 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:57:04,451 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:57:04,451 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:57:04,452 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:57:04,453 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:57:04,453 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:57:04,454 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:57:04,454 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:57:04,455 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:57:04,455 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:57:04,455 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:57:04,456 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:57:04,463 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:57:04,464 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:57:04,464 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:57:04,464 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:57:04,465 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:57:04,465 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:57:04,466 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:57:04,466 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:57:04,466 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:57:04,467 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:57:04,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:57:04,467 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:57:04,467 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:57:04,468 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:57:04,468 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:57:04,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:57:04,468 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:57:04,468 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:57:04,469 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:57:04,469 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:57:04,469 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:57:04,469 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_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 827966aa97f1ef0b10f5000ea004115fefca886471ee13cdd19ef0db3333c41b [2023-11-29 01:57:04,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:57:04,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:57:04,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:57:04,724 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:57:04,724 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:57:04,725 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/neural-networks/lunarlander_71_unsafe.c-amalgamation.i [2023-11-29 01:57:07,544 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:57:07,896 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:57:07,897 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/sv-benchmarks/c/neural-networks/lunarlander_71_unsafe.c-amalgamation.i [2023-11-29 01:57:07,930 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/data/9eb0b060d/cc8276082b354a4b8f5fc0e1b1bf900c/FLAGa0c93727e [2023-11-29 01:57:07,944 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/data/9eb0b060d/cc8276082b354a4b8f5fc0e1b1bf900c [2023-11-29 01:57:07,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:57:07,948 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:57:07,949 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:57:07,950 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:57:07,955 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:57:07,955 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:57:07" (1/1) ... [2023-11-29 01:57:07,956 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c1930b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:07, skipping insertion in model container [2023-11-29 01:57:07,957 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:57:07" (1/1) ... [2023-11-29 01:57:08,060 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:57:08,772 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_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/sv-benchmarks/c/neural-networks/lunarlander_71_unsafe.c-amalgamation.i[64324,64337] [2023-11-29 01:57:08,942 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:57:09,134 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:57:09,179 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_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/sv-benchmarks/c/neural-networks/lunarlander_71_unsafe.c-amalgamation.i[64324,64337] [2023-11-29 01:57:09,264 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:57:09,569 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:57:09,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:09 WrapperNode [2023-11-29 01:57:09,570 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:57:09,571 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:57:09,571 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:57:09,571 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:57:09,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:09" (1/1) ... [2023-11-29 01:57:09,656 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:09" (1/1) ... [2023-11-29 01:57:09,877 INFO L138 Inliner]: procedures = 620, calls = 5148, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5469 [2023-11-29 01:57:09,878 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:57:09,879 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:57:09,879 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:57:09,879 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:57:09,887 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:09" (1/1) ... [2023-11-29 01:57:09,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:09" (1/1) ... [2023-11-29 01:57:09,925 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:09" (1/1) ... [2023-11-29 01:57:09,975 INFO L175 MemorySlicer]: Split 5123 memory accesses to 12 slices as follows [2, 7, 513, 65, 4097, 65, 257, 5, 14, 3, 70, 25]. 80 percent of accesses are in the largest equivalence class. The 5077 initializations are split as follows [2, 7, 512, 64, 4096, 64, 256, 4, 8, 0, 64, 0]. The 14 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 3, 1, 2, 8]. [2023-11-29 01:57:09,975 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:09" (1/1) ... [2023-11-29 01:57:09,975 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:09" (1/1) ... [2023-11-29 01:57:10,067 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:09" (1/1) ... [2023-11-29 01:57:10,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:09" (1/1) ... [2023-11-29 01:57:10,146 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:09" (1/1) ... [2023-11-29 01:57:10,163 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:09" (1/1) ... [2023-11-29 01:57:10,195 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:57:10,196 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:57:10,196 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:57:10,197 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:57:10,197 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:09" (1/1) ... [2023-11-29 01:57:10,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:57:10,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:57:10,226 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:57:10,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:57:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-29 01:57:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-29 01:57:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-29 01:57:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-29 01:57:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-11-29 01:57:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2023-11-29 01:57:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2023-11-29 01:57:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2023-11-29 01:57:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2023-11-29 01:57:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2023-11-29 01:57:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2023-11-29 01:57:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2023-11-29 01:57:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:57:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2023-11-29 01:57:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2023-11-29 01:57:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2023-11-29 01:57:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2023-11-29 01:57:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2023-11-29 01:57:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2023-11-29 01:57:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2023-11-29 01:57:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2023-11-29 01:57:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2023-11-29 01:57:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2023-11-29 01:57:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2023-11-29 01:57:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2023-11-29 01:57:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-11-29 01:57:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-11-29 01:57:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2023-11-29 01:57:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2023-11-29 01:57:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2023-11-29 01:57:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2023-11-29 01:57:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2023-11-29 01:57:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2023-11-29 01:57:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2023-11-29 01:57:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2023-11-29 01:57:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2023-11-29 01:57:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2023-11-29 01:57:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:57:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:57:10,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:57:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:57:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:57:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:57:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:57:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:57:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 01:57:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 01:57:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 01:57:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 01:57:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-29 01:57:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-29 01:57:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-29 01:57:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-29 01:57:10,455 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:57:10,457 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:57:17,374 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:57:17,873 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:57:17,873 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-11-29 01:57:17,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:57:17 BoogieIcfgContainer [2023-11-29 01:57:17,874 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:57:17,876 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:57:17,876 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:57:17,879 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:57:17,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:57:07" (1/3) ... [2023-11-29 01:57:17,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7727df9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:57:17, skipping insertion in model container [2023-11-29 01:57:17,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:09" (2/3) ... [2023-11-29 01:57:17,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7727df9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:57:17, skipping insertion in model container [2023-11-29 01:57:17,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:57:17" (3/3) ... [2023-11-29 01:57:17,882 INFO L112 eAbstractionObserver]: Analyzing ICFG lunarlander_71_unsafe.c-amalgamation.i [2023-11-29 01:57:17,901 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:57:17,901 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:57:17,951 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:57:17,957 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;@2d1def0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:57:17,957 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:57:17,962 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) [2023-11-29 01:57:17,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 01:57:17,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:17,970 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] [2023-11-29 01:57:17,970 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:17,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:17,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1219428462, now seen corresponding path program 1 times [2023-11-29 01:57:17,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:17,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406302901] [2023-11-29 01:57:17,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:17,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:19,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:57:19,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:19,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406302901] [2023-11-29 01:57:19,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406302901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:19,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:19,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:57:19,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475173317] [2023-11-29 01:57:19,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:19,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:57:19,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:19,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:57:19,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:57:19,138 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) [2023-11-29 01:57:19,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:19,565 INFO L93 Difference]: Finished difference Result 113 states and 195 transitions. [2023-11-29 01:57:19,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:57:19,568 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 [2023-11-29 01:57:19,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:19,576 INFO L225 Difference]: With dead ends: 113 [2023-11-29 01:57:19,576 INFO L226 Difference]: Without dead ends: 56 [2023-11-29 01:57:19,579 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 [2023-11-29 01:57:19,582 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:19,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:57:19,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-29 01:57:19,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-29 01:57:19,617 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) [2023-11-29 01:57:19,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2023-11-29 01:57:19,620 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 39 [2023-11-29 01:57:19,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:19,621 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2023-11-29 01:57:19,621 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) [2023-11-29 01:57:19,621 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2023-11-29 01:57:19,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 01:57:19,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:19,623 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] [2023-11-29 01:57:19,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:57:19,623 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:19,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:19,624 INFO L85 PathProgramCache]: Analyzing trace with hash -481557306, now seen corresponding path program 1 times [2023-11-29 01:57:19,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:19,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115165233] [2023-11-29 01:57:19,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:19,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:20,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:57:20,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:20,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115165233] [2023-11-29 01:57:20,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115165233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:20,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:20,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:57:20,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613471232] [2023-11-29 01:57:20,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:20,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:57:20,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:20,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:57:20,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:57:20,506 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) [2023-11-29 01:57:21,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:21,182 INFO L93 Difference]: Finished difference Result 104 states and 143 transitions. [2023-11-29 01:57:21,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:57:21,183 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 [2023-11-29 01:57:21,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:21,184 INFO L225 Difference]: With dead ends: 104 [2023-11-29 01:57:21,184 INFO L226 Difference]: Without dead ends: 56 [2023-11-29 01:57:21,185 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 [2023-11-29 01:57:21,186 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 [2023-11-29 01:57:21,187 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] [2023-11-29 01:57:21,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-29 01:57:21,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-29 01:57:21,193 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) [2023-11-29 01:57:21,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2023-11-29 01:57:21,194 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 39 [2023-11-29 01:57:21,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:21,195 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2023-11-29 01:57:21,195 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) [2023-11-29 01:57:21,195 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2023-11-29 01:57:21,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 01:57:21,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:21,197 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] [2023-11-29 01:57:21,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:57:21,197 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:21,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:21,197 INFO L85 PathProgramCache]: Analyzing trace with hash -756316920, now seen corresponding path program 1 times [2023-11-29 01:57:21,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:21,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285176499] [2023-11-29 01:57:21,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:21,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:22,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:57:22,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:22,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285176499] [2023-11-29 01:57:22,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285176499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:22,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:22,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:57:22,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499917339] [2023-11-29 01:57:22,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:22,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:57:22,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:22,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:57:22,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:57:22,552 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) [2023-11-29 01:57:23,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:23,125 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2023-11-29 01:57:23,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:57:23,125 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 [2023-11-29 01:57:23,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:23,126 INFO L225 Difference]: With dead ends: 87 [2023-11-29 01:57:23,127 INFO L226 Difference]: Without dead ends: 57 [2023-11-29 01:57:23,127 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 [2023-11-29 01:57:23,128 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:23,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:57:23,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-29 01:57:23,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-11-29 01:57:23,135 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) [2023-11-29 01:57:23,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 77 transitions. [2023-11-29 01:57:23,136 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 77 transitions. Word has length 39 [2023-11-29 01:57:23,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:23,136 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 77 transitions. [2023-11-29 01:57:23,137 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) [2023-11-29 01:57:23,137 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 77 transitions. [2023-11-29 01:57:23,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 01:57:23,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:23,138 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] [2023-11-29 01:57:23,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:57:23,139 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:23,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:23,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1790905389, now seen corresponding path program 1 times [2023-11-29 01:57:23,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:23,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743804648] [2023-11-29 01:57:23,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:23,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:24,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:57:24,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:24,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743804648] [2023-11-29 01:57:24,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743804648] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:57:24,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689500585] [2023-11-29 01:57:24,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:24,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:24,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:57:24,044 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:57:24,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:57:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:25,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 6102 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:57:25,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:57:25,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:57:25,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:57:25,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:57:25,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689500585] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:57:25,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:57:25,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-29 01:57:25,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082582377] [2023-11-29 01:57:25,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:25,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:57:25,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:25,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:57:25,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:57:25,658 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) [2023-11-29 01:57:26,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:26,322 INFO L93 Difference]: Finished difference Result 78 states and 106 transitions. [2023-11-29 01:57:26,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:57:26,322 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 [2023-11-29 01:57:26,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:26,324 INFO L225 Difference]: With dead ends: 78 [2023-11-29 01:57:26,324 INFO L226 Difference]: Without dead ends: 58 [2023-11-29 01:57:26,324 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 [2023-11-29 01:57:26,325 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 [2023-11-29 01:57:26,326 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] [2023-11-29 01:57:26,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-29 01:57:26,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-11-29 01:57:26,332 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) [2023-11-29 01:57:26,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2023-11-29 01:57:26,333 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 40 [2023-11-29 01:57:26,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:26,334 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2023-11-29 01:57:26,334 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) [2023-11-29 01:57:26,334 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2023-11-29 01:57:26,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 01:57:26,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:26,336 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] [2023-11-29 01:57:26,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:57:26,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-29 01:57:26,541 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:26,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:26,541 INFO L85 PathProgramCache]: Analyzing trace with hash -793809956, now seen corresponding path program 1 times [2023-11-29 01:57:26,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:26,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889083823] [2023-11-29 01:57:26,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:26,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:27,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:57:27,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:27,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889083823] [2023-11-29 01:57:27,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889083823] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:57:27,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922449695] [2023-11-29 01:57:27,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:27,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:27,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:57:27,579 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:57:27,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:57:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:29,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 6120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:57:29,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:57:29,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:57:29,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:57:29,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:57:29,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922449695] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:57:29,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:57:29,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-29 01:57:29,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545513033] [2023-11-29 01:57:29,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:29,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:57:29,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:29,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:57:29,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:57:29,224 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) [2023-11-29 01:57:29,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:29,672 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2023-11-29 01:57:29,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:57:29,673 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 [2023-11-29 01:57:29,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:29,674 INFO L225 Difference]: With dead ends: 69 [2023-11-29 01:57:29,674 INFO L226 Difference]: Without dead ends: 59 [2023-11-29 01:57:29,675 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 [2023-11-29 01:57:29,676 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 [2023-11-29 01:57:29,676 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] [2023-11-29 01:57:29,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-29 01:57:29,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-29 01:57:29,682 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) [2023-11-29 01:57:29,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2023-11-29 01:57:29,683 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 79 transitions. Word has length 43 [2023-11-29 01:57:29,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:29,684 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 79 transitions. [2023-11-29 01:57:29,684 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) [2023-11-29 01:57:29,684 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 79 transitions. [2023-11-29 01:57:29,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-29 01:57:29,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:29,686 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, 1, 1, 1] [2023-11-29 01:57:29,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:57:29,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:29,886 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:29,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:29,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1367907231, now seen corresponding path program 1 times [2023-11-29 01:57:29,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:29,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370140268] [2023-11-29 01:57:29,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:29,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:31,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:57:31,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:31,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370140268] [2023-11-29 01:57:31,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370140268] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:57:31,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423842748] [2023-11-29 01:57:31,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:31,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:31,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:57:31,121 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:57:31,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:57:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:32,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 6138 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:57:32,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:57:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:57:32,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:57:32,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:57:32,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423842748] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:57:32,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:57:32,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-29 01:57:32,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553371599] [2023-11-29 01:57:32,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:32,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:57:32,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:32,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:57:32,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:57:32,714 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) [2023-11-29 01:57:33,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:33,152 INFO L93 Difference]: Finished difference Result 86 states and 116 transitions. [2023-11-29 01:57:33,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:57:33,153 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 [2023-11-29 01:57:33,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:33,153 INFO L225 Difference]: With dead ends: 86 [2023-11-29 01:57:33,154 INFO L226 Difference]: Without dead ends: 60 [2023-11-29 01:57:33,154 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 [2023-11-29 01:57:33,155 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:33,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:57:33,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-29 01:57:33,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-11-29 01:57:33,160 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) [2023-11-29 01:57:33,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2023-11-29 01:57:33,161 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 46 [2023-11-29 01:57:33,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:33,161 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2023-11-29 01:57:33,162 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) [2023-11-29 01:57:33,162 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2023-11-29 01:57:33,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-29 01:57:33,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:33,163 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] [2023-11-29 01:57:33,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:57:33,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 01:57:33,368 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:33,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:33,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1170803542, now seen corresponding path program 1 times [2023-11-29 01:57:33,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:33,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150785681] [2023-11-29 01:57:33,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:33,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:34,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:57:34,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:34,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150785681] [2023-11-29 01:57:34,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150785681] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:57:34,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723547121] [2023-11-29 01:57:34,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:34,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:34,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:57:34,294 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:57:34,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:57:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:35,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 6144 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:57:35,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:57:35,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:57:35,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:57:35,713 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:57:35,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723547121] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:57:35,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:57:35,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-29 01:57:35,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222656875] [2023-11-29 01:57:35,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:35,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:57:35,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:35,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:57:35,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:57:35,716 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) [2023-11-29 01:57:36,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:36,207 INFO L93 Difference]: Finished difference Result 76 states and 101 transitions. [2023-11-29 01:57:36,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:57:36,208 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 [2023-11-29 01:57:36,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:36,209 INFO L225 Difference]: With dead ends: 76 [2023-11-29 01:57:36,209 INFO L226 Difference]: Without dead ends: 61 [2023-11-29 01:57:36,209 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 [2023-11-29 01:57:36,210 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 [2023-11-29 01:57:36,211 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] [2023-11-29 01:57:36,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-29 01:57:36,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-11-29 01:57:36,216 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) [2023-11-29 01:57:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2023-11-29 01:57:36,217 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 49 [2023-11-29 01:57:36,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:36,217 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2023-11-29 01:57:36,217 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) [2023-11-29 01:57:36,217 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2023-11-29 01:57:36,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 01:57:36,218 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:36,218 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] [2023-11-29 01:57:36,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:57:36,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:36,419 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:36,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:36,420 INFO L85 PathProgramCache]: Analyzing trace with hash 559835403, now seen corresponding path program 1 times [2023-11-29 01:57:36,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:36,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421260907] [2023-11-29 01:57:36,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:36,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:37,232 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:57:37,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:37,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421260907] [2023-11-29 01:57:37,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421260907] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:57:37,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722881984] [2023-11-29 01:57:37,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:37,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:37,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:57:37,234 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:57:37,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:57:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:38,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 6150 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:57:38,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:57:38,620 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:57:38,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:57:38,631 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:57:38,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722881984] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:57:38,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:57:38,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-29 01:57:38,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558309145] [2023-11-29 01:57:38,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:38,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:57:38,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:38,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:57:38,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:57:38,633 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) [2023-11-29 01:57:39,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:39,164 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2023-11-29 01:57:39,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:57:39,165 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 [2023-11-29 01:57:39,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:39,166 INFO L225 Difference]: With dead ends: 66 [2023-11-29 01:57:39,166 INFO L226 Difference]: Without dead ends: 62 [2023-11-29 01:57:39,166 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 [2023-11-29 01:57:39,167 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 [2023-11-29 01:57:39,167 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] [2023-11-29 01:57:39,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-29 01:57:39,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-29 01:57:39,171 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) [2023-11-29 01:57:39,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2023-11-29 01:57:39,172 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 52 [2023-11-29 01:57:39,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:39,172 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2023-11-29 01:57:39,173 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) [2023-11-29 01:57:39,173 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2023-11-29 01:57:39,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 01:57:39,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:39,174 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] [2023-11-29 01:57:39,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:57:39,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:39,375 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:39,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:39,375 INFO L85 PathProgramCache]: Analyzing trace with hash 948688438, now seen corresponding path program 1 times [2023-11-29 01:57:39,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:39,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612977112] [2023-11-29 01:57:39,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:39,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:40,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:57:40,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:40,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612977112] [2023-11-29 01:57:40,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612977112] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:57:40,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600457303] [2023-11-29 01:57:40,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:40,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:40,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:57:40,157 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:57:40,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:57:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:41,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 6156 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:57:41,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:57:41,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:57:41,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:57:41,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:57:41,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600457303] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:57:41,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:57:41,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-11-29 01:57:41,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164642942] [2023-11-29 01:57:41,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:57:41,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:57:41,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:41,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:57:41,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:57:41,534 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) [2023-11-29 01:57:42,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:42,197 INFO L93 Difference]: Finished difference Result 107 states and 146 transitions. [2023-11-29 01:57:42,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:57:42,198 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 [2023-11-29 01:57:42,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:42,198 INFO L225 Difference]: With dead ends: 107 [2023-11-29 01:57:42,198 INFO L226 Difference]: Without dead ends: 72 [2023-11-29 01:57:42,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:57:42,200 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 13 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:42,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 273 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:57:42,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-29 01:57:42,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-11-29 01:57:42,206 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) [2023-11-29 01:57:42,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2023-11-29 01:57:42,207 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 55 [2023-11-29 01:57:42,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:42,207 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2023-11-29 01:57:42,207 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) [2023-11-29 01:57:42,207 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2023-11-29 01:57:42,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-29 01:57:42,208 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:42,209 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] [2023-11-29 01:57:42,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:57:42,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:42,410 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:42,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:42,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1849547982, now seen corresponding path program 2 times [2023-11-29 01:57:42,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:42,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388840125] [2023-11-29 01:57:42,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:42,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 01:57:43,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:43,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388840125] [2023-11-29 01:57:43,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388840125] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:57:43,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494068309] [2023-11-29 01:57:43,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:57:43,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:43,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:57:43,411 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:57:43,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:57:44,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:57:44,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:57:44,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 6221 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:57:44,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:57:44,961 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:57:44,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:57:44,993 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 01:57:44,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494068309] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:57:44,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:57:44,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 8] total 12 [2023-11-29 01:57:44,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474676724] [2023-11-29 01:57:44,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:44,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:57:44,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:44,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:57:44,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:57:44,996 INFO L87 Difference]: Start difference. First operand 72 states and 95 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2023-11-29 01:57:45,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:45,461 INFO L93 Difference]: Finished difference Result 82 states and 108 transitions. [2023-11-29 01:57:45,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:57:45,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 65 [2023-11-29 01:57:45,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:45,463 INFO L225 Difference]: With dead ends: 82 [2023-11-29 01:57:45,463 INFO L226 Difference]: Without dead ends: 73 [2023-11-29 01:57:45,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:57:45,464 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:45,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:57:45,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-29 01:57:45,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-29 01:57:45,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 72 states have internal predecessors, (96), 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) [2023-11-29 01:57:45,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 96 transitions. [2023-11-29 01:57:45,470 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 96 transitions. Word has length 65 [2023-11-29 01:57:45,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:45,470 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 96 transitions. [2023-11-29 01:57:45,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2023-11-29 01:57:45,470 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 96 transitions. [2023-11-29 01:57:45,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-29 01:57:45,471 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:45,472 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, 1, 1, 1] [2023-11-29 01:57:45,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:57:45,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:57:45,672 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:45,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:45,673 INFO L85 PathProgramCache]: Analyzing trace with hash 938461958, now seen corresponding path program 1 times [2023-11-29 01:57:45,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:45,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934331930] [2023-11-29 01:57:45,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:45,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 01:57:46,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:46,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934331930] [2023-11-29 01:57:46,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934331930] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:57:46,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564305951] [2023-11-29 01:57:46,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:46,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:46,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:57:46,696 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:57:46,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:57:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:48,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 6235 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:57:48,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:57:48,170 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 01:57:48,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:57:48,196 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 01:57:48,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564305951] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:57:48,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:57:48,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2023-11-29 01:57:48,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549306280] [2023-11-29 01:57:48,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:57:48,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:57:48,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:48,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:57:48,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:57:48,198 INFO L87 Difference]: Start difference. First operand 73 states and 96 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 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) [2023-11-29 01:57:48,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:48,738 INFO L93 Difference]: Finished difference Result 128 states and 173 transitions. [2023-11-29 01:57:48,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:57:48,738 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 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 68 [2023-11-29 01:57:48,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:48,739 INFO L225 Difference]: With dead ends: 128 [2023-11-29 01:57:48,739 INFO L226 Difference]: Without dead ends: 83 [2023-11-29 01:57:48,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:57:48,740 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 17 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:48,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 273 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:57:48,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-29 01:57:48,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-11-29 01:57:48,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.329268292682927) internal successors, (109), 82 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:48,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 109 transitions. [2023-11-29 01:57:48,746 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 109 transitions. Word has length 68 [2023-11-29 01:57:48,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:48,746 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 109 transitions. [2023-11-29 01:57:48,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 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) [2023-11-29 01:57:48,746 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 109 transitions. [2023-11-29 01:57:48,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 01:57:48,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:48,748 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:57:48,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:57:48,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 01:57:48,952 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:48,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:48,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1365987656, now seen corresponding path program 2 times [2023-11-29 01:57:48,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:48,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126213382] [2023-11-29 01:57:48,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:48,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:49,977 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-29 01:57:49,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:49,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126213382] [2023-11-29 01:57:49,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126213382] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:57:49,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340743629] [2023-11-29 01:57:49,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:57:49,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:49,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:57:49,978 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:57:49,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:57:51,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:57:51,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:57:51,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 6300 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 01:57:51,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:57:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 01:57:51,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:57:51,644 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-29 01:57:51,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340743629] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:57:51,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:57:51,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 5] total 14 [2023-11-29 01:57:51,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834295712] [2023-11-29 01:57:51,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:57:51,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:57:51,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:51,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:57:51,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:57:51,646 INFO L87 Difference]: Start difference. First operand 83 states and 109 transitions. Second operand has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 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) [2023-11-29 01:57:53,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:53,189 INFO L93 Difference]: Finished difference Result 146 states and 196 transitions. [2023-11-29 01:57:53,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:57:53,190 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 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 78 [2023-11-29 01:57:53,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:53,191 INFO L225 Difference]: With dead ends: 146 [2023-11-29 01:57:53,191 INFO L226 Difference]: Without dead ends: 92 [2023-11-29 01:57:53,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:57:53,192 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 27 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:53,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 717 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 01:57:53,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-29 01:57:53,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2023-11-29 01:57:53,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.3258426966292134) internal successors, (118), 89 states have internal predecessors, (118), 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) [2023-11-29 01:57:53,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 118 transitions. [2023-11-29 01:57:53,198 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 118 transitions. Word has length 78 [2023-11-29 01:57:53,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:53,199 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 118 transitions. [2023-11-29 01:57:53,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 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) [2023-11-29 01:57:53,199 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 118 transitions. [2023-11-29 01:57:53,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 01:57:53,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:53,200 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:57:53,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:57:53,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 01:57:53,400 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:53,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:53,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1427743436, now seen corresponding path program 3 times [2023-11-29 01:57:53,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:53,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485495377] [2023-11-29 01:57:53,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:53,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:54,381 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-11-29 01:57:54,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:54,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485495377] [2023-11-29 01:57:54,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485495377] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:57:54,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652064956] [2023-11-29 01:57:54,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:57:54,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:54,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:57:54,383 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:57:54,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:57:56,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 01:57:56,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:57:56,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 6167 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:57:56,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:57:56,199 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 01:57:56,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:57:56,228 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-29 01:57:56,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652064956] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:57:56,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:57:56,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 11 [2023-11-29 01:57:56,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914388089] [2023-11-29 01:57:56,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:56,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:57:56,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:56,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:57:56,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:57:56,230 INFO L87 Difference]: Start difference. First operand 90 states and 118 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2023-11-29 01:57:56,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:56,759 INFO L93 Difference]: Finished difference Result 125 states and 165 transitions. [2023-11-29 01:57:56,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:57:56,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 85 [2023-11-29 01:57:56,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:56,760 INFO L225 Difference]: With dead ends: 125 [2023-11-29 01:57:56,760 INFO L226 Difference]: Without dead ends: 91 [2023-11-29 01:57:56,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:57:56,762 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:56,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:57:56,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-29 01:57:56,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-11-29 01:57:56,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.3222222222222222) internal successors, (119), 90 states have internal predecessors, (119), 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) [2023-11-29 01:57:56,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 119 transitions. [2023-11-29 01:57:56,767 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 119 transitions. Word has length 85 [2023-11-29 01:57:56,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:56,767 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 119 transitions. [2023-11-29 01:57:56,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2023-11-29 01:57:56,767 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 119 transitions. [2023-11-29 01:57:56,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 01:57:56,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:56,768 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:57:56,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:57:56,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:56,968 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:56,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:56,969 INFO L85 PathProgramCache]: Analyzing trace with hash 642434296, now seen corresponding path program 1 times [2023-11-29 01:57:56,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:56,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082478277] [2023-11-29 01:57:56,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:56,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-29 01:57:58,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:58,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082478277] [2023-11-29 01:57:58,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082478277] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:57:58,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194303818] [2023-11-29 01:57:58,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:58,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:58,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:57:58,003 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:57:58,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:57:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:59,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 6357 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:57:59,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:57:59,637 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 01:57:59,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:57:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-29 01:57:59,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194303818] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:57:59,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:57:59,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 22 [2023-11-29 01:57:59,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248258416] [2023-11-29 01:57:59,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:57:59,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 01:57:59,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:59,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 01:57:59,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:57:59,773 INFO L87 Difference]: Start difference. First operand 91 states and 119 transitions. Second operand has 22 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 22 states have internal predecessors, (127), 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) [2023-11-29 01:58:02,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:02,683 INFO L93 Difference]: Finished difference Result 173 states and 235 transitions. [2023-11-29 01:58:02,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 01:58:02,683 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 22 states have internal predecessors, (127), 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 88 [2023-11-29 01:58:02,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:02,684 INFO L225 Difference]: With dead ends: 173 [2023-11-29 01:58:02,684 INFO L226 Difference]: Without dead ends: 112 [2023-11-29 01:58:02,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2023-11-29 01:58:02,686 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 50 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:02,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 773 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 01:58:02,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-29 01:58:02,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2023-11-29 01:58:02,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.3211009174311927) internal successors, (144), 109 states have internal predecessors, (144), 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) [2023-11-29 01:58:02,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 144 transitions. [2023-11-29 01:58:02,693 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 144 transitions. Word has length 88 [2023-11-29 01:58:02,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:02,694 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 144 transitions. [2023-11-29 01:58:02,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 22 states have internal predecessors, (127), 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) [2023-11-29 01:58:02,694 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 144 transitions. [2023-11-29 01:58:02,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 01:58:02,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:02,695 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:58:02,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:58:02,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:02,896 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:02,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:02,896 INFO L85 PathProgramCache]: Analyzing trace with hash -645110381, now seen corresponding path program 2 times [2023-11-29 01:58:02,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:02,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318283581] [2023-11-29 01:58:02,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:02,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:04,010 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-11-29 01:58:04,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:04,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318283581] [2023-11-29 01:58:04,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318283581] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:58:04,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024543597] [2023-11-29 01:58:04,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:58:04,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:04,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:58:04,012 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:58:04,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:58:05,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:58:05,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:58:05,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 6476 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 01:58:05,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:58:05,687 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-29 01:58:05,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:58:06,029 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 80 proven. 70 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-29 01:58:06,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024543597] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:58:06,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:58:06,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 14] total 26 [2023-11-29 01:58:06,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25480181] [2023-11-29 01:58:06,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:58:06,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 01:58:06,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:06,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 01:58:06,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2023-11-29 01:58:06,031 INFO L87 Difference]: Start difference. First operand 110 states and 144 transitions. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 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) [2023-11-29 01:58:08,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:08,657 INFO L93 Difference]: Finished difference Result 211 states and 286 transitions. [2023-11-29 01:58:08,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 01:58:08,657 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 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 107 [2023-11-29 01:58:08,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:08,658 INFO L225 Difference]: With dead ends: 211 [2023-11-29 01:58:08,658 INFO L226 Difference]: Without dead ends: 132 [2023-11-29 01:58:08,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2023-11-29 01:58:08,660 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 58 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:08,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 924 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-29 01:58:08,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-29 01:58:08,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-11-29 01:58:08,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.3206106870229009) internal successors, (173), 131 states have internal predecessors, (173), 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) [2023-11-29 01:58:08,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 173 transitions. [2023-11-29 01:58:08,669 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 173 transitions. Word has length 107 [2023-11-29 01:58:08,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:08,669 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 173 transitions. [2023-11-29 01:58:08,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 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) [2023-11-29 01:58:08,670 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 173 transitions. [2023-11-29 01:58:08,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-29 01:58:08,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:08,671 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:58:08,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:58:08,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 01:58:08,872 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:08,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:08,872 INFO L85 PathProgramCache]: Analyzing trace with hash -461797041, now seen corresponding path program 3 times [2023-11-29 01:58:08,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:08,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040432855] [2023-11-29 01:58:08,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:08,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:10,292 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-29 01:58:10,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:10,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040432855] [2023-11-29 01:58:10,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040432855] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:58:10,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109567375] [2023-11-29 01:58:10,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:58:10,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:10,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:58:10,293 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:58:10,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:58:12,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 01:58:12,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:58:12,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 6167 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 01:58:12,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:58:12,261 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-11-29 01:58:12,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:58:12,296 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2023-11-29 01:58:12,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109567375] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:58:12,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:58:12,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9, 5] total 13 [2023-11-29 01:58:12,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377213115] [2023-11-29 01:58:12,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:58:12,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:58:12,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:12,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:58:12,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:58:12,298 INFO L87 Difference]: Start difference. First operand 132 states and 173 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2023-11-29 01:58:12,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:12,690 INFO L93 Difference]: Finished difference Result 231 states and 306 transitions. [2023-11-29 01:58:12,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:58:12,691 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 129 [2023-11-29 01:58:12,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:12,692 INFO L225 Difference]: With dead ends: 231 [2023-11-29 01:58:12,692 INFO L226 Difference]: Without dead ends: 133 [2023-11-29 01:58:12,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:58:12,693 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 11 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 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 [2023-11-29 01:58:12,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 108 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:58:12,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-29 01:58:12,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-11-29 01:58:12,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.3181818181818181) internal successors, (174), 132 states have internal predecessors, (174), 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) [2023-11-29 01:58:12,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 174 transitions. [2023-11-29 01:58:12,699 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 174 transitions. Word has length 129 [2023-11-29 01:58:12,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:12,699 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 174 transitions. [2023-11-29 01:58:12,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2023-11-29 01:58:12,699 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 174 transitions. [2023-11-29 01:58:12,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-29 01:58:12,700 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:12,700 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:58:12,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:58:12,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:58:12,901 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:12,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:12,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1904446591, now seen corresponding path program 1 times [2023-11-29 01:58:12,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:12,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234393471] [2023-11-29 01:58:12,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:12,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:14,173 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-11-29 01:58:14,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:14,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234393471] [2023-11-29 01:58:14,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234393471] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:58:14,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366849292] [2023-11-29 01:58:14,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:14,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:14,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:58:14,175 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:58:14,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:58:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:15,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 6627 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 01:58:15,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:58:16,017 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 01:58:16,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:58:16,468 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2023-11-29 01:58:16,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366849292] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:58:16,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:58:16,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 24, 13] total 42 [2023-11-29 01:58:16,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473089698] [2023-11-29 01:58:16,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:58:16,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 01:58:16,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:16,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 01:58:16,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1514, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 01:58:16,470 INFO L87 Difference]: Start difference. First operand 133 states and 174 transitions. Second operand has 42 states, 42 states have (on average 4.5) internal successors, (189), 42 states have internal predecessors, (189), 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) [2023-11-29 01:58:26,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:26,413 INFO L93 Difference]: Finished difference Result 271 states and 370 transitions. [2023-11-29 01:58:26,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-29 01:58:26,414 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.5) internal successors, (189), 42 states have internal predecessors, (189), 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 132 [2023-11-29 01:58:26,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:26,415 INFO L225 Difference]: With dead ends: 271 [2023-11-29 01:58:26,415 INFO L226 Difference]: Without dead ends: 170 [2023-11-29 01:58:26,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=448, Invalid=2204, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 01:58:26,417 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 194 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 2299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:26,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1858 Invalid, 2299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 01:58:26,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-29 01:58:26,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-11-29 01:58:26,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.319526627218935) internal successors, (223), 169 states have internal predecessors, (223), 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) [2023-11-29 01:58:26,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 223 transitions. [2023-11-29 01:58:26,426 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 223 transitions. Word has length 132 [2023-11-29 01:58:26,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:26,426 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 223 transitions. [2023-11-29 01:58:26,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.5) internal successors, (189), 42 states have internal predecessors, (189), 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) [2023-11-29 01:58:26,426 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 223 transitions. [2023-11-29 01:58:26,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-29 01:58:26,427 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:26,427 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 12, 12, 12, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:58:26,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:58:26,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:58:26,628 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:26,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:26,628 INFO L85 PathProgramCache]: Analyzing trace with hash 81179708, now seen corresponding path program 2 times [2023-11-29 01:58:26,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:26,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120511594] [2023-11-29 01:58:26,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:26,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:28,240 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 935 trivial. 0 not checked. [2023-11-29 01:58:28,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:28,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120511594] [2023-11-29 01:58:28,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120511594] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:58:28,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264069055] [2023-11-29 01:58:28,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:58:28,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:28,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:58:28,241 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:58:28,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:58:29,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:58:29,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:58:29,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 6854 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-29 01:58:29,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:58:30,179 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2023-11-29 01:58:30,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:58:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 370 proven. 420 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2023-11-29 01:58:31,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264069055] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:58:31,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:58:31,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 28] total 49 [2023-11-29 01:58:31,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978152725] [2023-11-29 01:58:31,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:58:31,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-29 01:58:31,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:31,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-29 01:58:31,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=2081, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 01:58:31,341 INFO L87 Difference]: Start difference. First operand 170 states and 223 transitions. Second operand has 49 states, 49 states have (on average 3.979591836734694) internal successors, (195), 49 states have internal predecessors, (195), 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) [2023-11-29 01:58:47,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:47,453 INFO L93 Difference]: Finished difference Result 350 states and 477 transitions. [2023-11-29 01:58:47,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-29 01:58:47,453 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.979591836734694) internal successors, (195), 49 states have internal predecessors, (195), 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 169 [2023-11-29 01:58:47,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:47,455 INFO L225 Difference]: With dead ends: 350 [2023-11-29 01:58:47,455 INFO L226 Difference]: Without dead ends: 213 [2023-11-29 01:58:47,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=607, Invalid=3053, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 01:58:47,457 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 208 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 2145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:47,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 2146 Invalid, 2145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2142 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-29 01:58:47,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-29 01:58:47,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2023-11-29 01:58:47,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.320754716981132) internal successors, (280), 212 states have internal predecessors, (280), 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) [2023-11-29 01:58:47,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 280 transitions. [2023-11-29 01:58:47,465 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 280 transitions. Word has length 169 [2023-11-29 01:58:47,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:47,465 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 280 transitions. [2023-11-29 01:58:47,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.979591836734694) internal successors, (195), 49 states have internal predecessors, (195), 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) [2023-11-29 01:58:47,466 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 280 transitions. [2023-11-29 01:58:47,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-29 01:58:47,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:47,467 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 22, 22, 22, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:58:47,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 01:58:47,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:58:47,667 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:47,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:47,668 INFO L85 PathProgramCache]: Analyzing trace with hash -2072713407, now seen corresponding path program 3 times [2023-11-29 01:58:47,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:47,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243300980] [2023-11-29 01:58:47,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:47,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:51,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1762 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 761 trivial. 0 not checked. [2023-11-29 01:58:51,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:51,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243300980] [2023-11-29 01:58:51,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243300980] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:58:51,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726999235] [2023-11-29 01:58:51,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:58:51,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:51,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:58:51,014 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:58:51,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:58:53,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 01:58:53,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:58:53,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 6267 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 01:58:53,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:58:54,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1762 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1750 trivial. 0 not checked. [2023-11-29 01:58:54,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:58:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1762 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1760 trivial. 0 not checked. [2023-11-29 01:58:54,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726999235] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:58:54,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:58:54,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [29, 6] total 35 [2023-11-29 01:58:54,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743390809] [2023-11-29 01:58:54,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:58:54,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:58:54,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:54,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:58:54,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1092, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 01:58:54,163 INFO L87 Difference]: Start difference. First operand 213 states and 280 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2023-11-29 01:58:54,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:54,542 INFO L93 Difference]: Finished difference Result 303 states and 400 transitions. [2023-11-29 01:58:54,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:58:54,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 212 [2023-11-29 01:58:54,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:54,543 INFO L225 Difference]: With dead ends: 303 [2023-11-29 01:58:54,543 INFO L226 Difference]: Without dead ends: 214 [2023-11-29 01:58:54,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=1092, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 01:58:54,544 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:54,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 111 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:58:54,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-29 01:58:54,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2023-11-29 01:58:54,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.3192488262910798) internal successors, (281), 213 states have internal predecessors, (281), 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) [2023-11-29 01:58:54,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 281 transitions. [2023-11-29 01:58:54,553 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 281 transitions. Word has length 212 [2023-11-29 01:58:54,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:54,554 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 281 transitions. [2023-11-29 01:58:54,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2023-11-29 01:58:54,554 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 281 transitions. [2023-11-29 01:58:54,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-29 01:58:54,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:54,555 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 22, 22, 22, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:58:54,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 01:58:54,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:54,755 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:54,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:54,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1680534967, now seen corresponding path program 1 times [2023-11-29 01:58:54,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:54,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094884892] [2023-11-29 01:58:54,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:54,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:58,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1763 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2023-11-29 01:58:58,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:58,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094884892] [2023-11-29 01:58:58,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094884892] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:58:58,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416269735] [2023-11-29 01:58:58,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:58,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:58,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:58:58,109 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:58:58,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 01:58:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:59,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 7122 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 01:58:59,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:58:59,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1763 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 1725 trivial. 0 not checked. [2023-11-29 01:58:59,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:59:00,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1763 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1761 trivial. 0 not checked. [2023-11-29 01:59:00,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416269735] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:59:00,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:59:00,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [29, 13] total 42 [2023-11-29 01:59:00,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347049054] [2023-11-29 01:59:00,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:59:00,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:59:00,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:59:00,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:59:00,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1610, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 01:59:00,042 INFO L87 Difference]: Start difference. First operand 214 states and 281 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2023-11-29 01:59:00,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:59:00,484 INFO L93 Difference]: Finished difference Result 393 states and 520 transitions. [2023-11-29 01:59:00,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:59:00,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 213 [2023-11-29 01:59:00,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:59:00,486 INFO L225 Difference]: With dead ends: 393 [2023-11-29 01:59:00,486 INFO L226 Difference]: Without dead ends: 215 [2023-11-29 01:59:00,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=1610, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 01:59:00,488 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:59:00,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 163 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:59:00,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-11-29 01:59:00,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2023-11-29 01:59:00,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.3177570093457944) internal successors, (282), 214 states have internal predecessors, (282), 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) [2023-11-29 01:59:00,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 282 transitions. [2023-11-29 01:59:00,499 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 282 transitions. Word has length 213 [2023-11-29 01:59:00,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:59:00,499 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 282 transitions. [2023-11-29 01:59:00,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2023-11-29 01:59:00,499 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 282 transitions. [2023-11-29 01:59:00,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-11-29 01:59:00,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:59:00,500 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 22, 22, 22, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:59:00,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 01:59:00,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:00,701 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:59:00,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:59:00,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1869442415, now seen corresponding path program 1 times [2023-11-29 01:59:00,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:59:00,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303849110] [2023-11-29 01:59:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:00,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:59:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:04,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2023-11-29 01:59:04,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:59:04,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303849110] [2023-11-29 01:59:04,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303849110] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:59:04,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535248772] [2023-11-29 01:59:04,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:04,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:04,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:59:04,322 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:59:04,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 01:59:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:06,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 7127 conjuncts, 94 conjunts are in the unsatisfiable core [2023-11-29 01:59:06,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:59:06,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1698 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-29 01:59:06,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:59:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 1049 trivial. 0 not checked. [2023-11-29 01:59:08,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535248772] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:59:08,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:59:08,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 48, 25] total 75 [2023-11-29 01:59:08,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300096165] [2023-11-29 01:59:08,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:59:08,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2023-11-29 01:59:08,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:59:08,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2023-11-29 01:59:08,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=702, Invalid=4848, Unknown=0, NotChecked=0, Total=5550 [2023-11-29 01:59:08,384 INFO L87 Difference]: Start difference. First operand 215 states and 282 transitions. Second operand has 75 states, 75 states have (on average 3.8933333333333335) internal successors, (292), 75 states have internal predecessors, (292), 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) [2023-11-29 02:01:58,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:01:58,847 INFO L93 Difference]: Finished difference Result 384 states and 531 transitions. [2023-11-29 02:01:58,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-11-29 02:01:58,847 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.8933333333333335) internal successors, (292), 75 states have internal predecessors, (292), 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 214 [2023-11-29 02:01:58,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:01:58,849 INFO L225 Difference]: With dead ends: 384 [2023-11-29 02:01:58,849 INFO L226 Difference]: Without dead ends: 292 [2023-11-29 02:01:58,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 166.6s TimeCoverageRelationStatistics Valid=1758, Invalid=7554, Unknown=0, NotChecked=0, Total=9312 [2023-11-29 02:01:58,852 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 600 mSDsluCounter, 3514 mSDsCounter, 0 mSdLazyCounter, 6633 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 3614 SdHoareTripleChecker+Invalid, 6635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:01:58,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 3614 Invalid, 6635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6633 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-29 02:01:58,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-11-29 02:01:58,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 290. [2023-11-29 02:01:58,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.3217993079584776) internal successors, (382), 289 states have internal predecessors, (382), 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) [2023-11-29 02:01:58,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 382 transitions. [2023-11-29 02:01:58,863 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 382 transitions. Word has length 214 [2023-11-29 02:01:58,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:01:58,863 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 382 transitions. [2023-11-29 02:01:58,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.8933333333333335) internal successors, (292), 75 states have internal predecessors, (292), 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) [2023-11-29 02:01:58,863 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 382 transitions. [2023-11-29 02:01:58,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2023-11-29 02:01:58,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:01:58,865 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 27, 27, 27, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:01:58,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 02:01:59,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:01:59,065 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:01:59,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:01:59,066 INFO L85 PathProgramCache]: Analyzing trace with hash 293783672, now seen corresponding path program 2 times [2023-11-29 02:01:59,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:01:59,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846264418] [2023-11-29 02:01:59,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:59,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:01:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:02:02,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4279 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 3199 trivial. 0 not checked. [2023-11-29 02:02:02,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:02:02,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846264418] [2023-11-29 02:02:02,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846264418] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:02:02,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907068209] [2023-11-29 02:02:02,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:02:02,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:02:02,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:02:02,872 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:02:02,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 02:02:04,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 02:02:04,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:02:04,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 7577 conjuncts, 114 conjunts are in the unsatisfiable core [2023-11-29 02:02:04,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:02:05,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4279 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 3199 trivial. 0 not checked. [2023-11-29 02:02:05,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:02:09,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4279 backedges. 1558 proven. 2160 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-11-29 02:02:09,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907068209] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:02:09,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:02:09,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 58] total 87 [2023-11-29 02:02:09,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376374313] [2023-11-29 02:02:09,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:02:09,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2023-11-29 02:02:09,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:02:09,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2023-11-29 02:02:09,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1011, Invalid=6471, Unknown=0, NotChecked=0, Total=7482 [2023-11-29 02:02:09,152 INFO L87 Difference]: Start difference. First operand 290 states and 382 transitions. Second operand has 87 states, 87 states have (on average 3.586206896551724) internal successors, (312), 87 states have internal predecessors, (312), 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) [2023-11-29 02:02:21,293 WARN L854 $PredicateComparison]: unable to prove that (and (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 10) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 20) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 22) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 7) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 25) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 24) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 16) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 1) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 18) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 19) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 11) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 15) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 21) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 12) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 9) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 13) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 26) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 2) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 4) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 27) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 5) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 14) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 23) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 17) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 6) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 3) 4294967296) 64) (< (mod (+ |c_ULTIMATE.start_node_Relu_2_~i~2#1| 8) 4294967296) 64) (< (mod |c_ULTIMATE.start_node_Relu_2_~i~2#1| 4294967296) 64)) is different from false [2023-11-29 02:07:58,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:07:58,557 INFO L93 Difference]: Finished difference Result 541 states and 744 transitions. [2023-11-29 02:07:58,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-29 02:07:58,560 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 3.586206896551724) internal successors, (312), 87 states have internal predecessors, (312), 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 289 [2023-11-29 02:07:58,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:07:58,562 INFO L225 Difference]: With dead ends: 541 [2023-11-29 02:07:58,562 INFO L226 Difference]: Without dead ends: 377 [2023-11-29 02:07:58,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 344.7s TimeCoverageRelationStatistics Valid=2579, Invalid=10306, Unknown=1, NotChecked=224, Total=13110 [2023-11-29 02:07:58,566 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 573 mSDsluCounter, 4482 mSDsCounter, 0 mSdLazyCounter, 5902 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 4564 SdHoareTripleChecker+Invalid, 5964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:07:58,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 4564 Invalid, 5964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5902 Invalid, 0 Unknown, 59 Unchecked, 8.6s Time] [2023-11-29 02:07:58,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-29 02:07:58,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2023-11-29 02:07:58,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 1.324468085106383) internal successors, (498), 376 states have internal predecessors, (498), 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) [2023-11-29 02:07:58,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 498 transitions. [2023-11-29 02:07:58,580 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 498 transitions. Word has length 289 [2023-11-29 02:07:58,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:07:58,581 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 498 transitions. [2023-11-29 02:07:58,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 3.586206896551724) internal successors, (312), 87 states have internal predecessors, (312), 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) [2023-11-29 02:07:58,581 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 498 transitions. [2023-11-29 02:07:58,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2023-11-29 02:07:58,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:07:58,583 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 46, 46, 46, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:07:58,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 02:07:58,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:58,783 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:07:58,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:58,784 INFO L85 PathProgramCache]: Analyzing trace with hash 265422961, now seen corresponding path program 3 times [2023-11-29 02:07:58,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:58,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390012980] [2023-11-29 02:07:58,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:58,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:07,205 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 4676 refuted. 0 times theorem prover too weak. 3199 trivial. 0 not checked. [2023-11-29 02:08:07,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:07,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390012980] [2023-11-29 02:08:07,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390012980] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:07,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771484340] [2023-11-29 02:08:07,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 02:08:07,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:07,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:07,207 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:07,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 02:08:10,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 02:08:10,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:08:10,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 6267 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 02:08:10,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:11,260 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 7858 trivial. 0 not checked. [2023-11-29 02:08:11,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:08:11,642 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7873 trivial. 0 not checked. [2023-11-29 02:08:11,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771484340] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:08:11,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:08:11,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 7, 6] total 68 [2023-11-29 02:08:11,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977972136] [2023-11-29 02:08:11,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:08:11,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-11-29 02:08:11,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:11,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-11-29 02:08:11,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=4357, Unknown=0, NotChecked=0, Total=4556 [2023-11-29 02:08:11,648 INFO L87 Difference]: Start difference. First operand 377 states and 498 transitions. Second operand has 68 states, 68 states have (on average 3.75) internal successors, (255), 68 states have internal predecessors, (255), 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) [2023-11-29 02:08:21,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:21,763 INFO L93 Difference]: Finished difference Result 752 states and 1002 transitions. [2023-11-29 02:08:21,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-11-29 02:08:21,764 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.75) internal successors, (255), 68 states have internal predecessors, (255), 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 376 [2023-11-29 02:08:21,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:21,766 INFO L225 Difference]: With dead ends: 752 [2023-11-29 02:08:21,766 INFO L226 Difference]: Without dead ends: 411 [2023-11-29 02:08:21,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 817 GetRequests, 743 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=273, Invalid=5427, Unknown=0, NotChecked=0, Total=5700 [2023-11-29 02:08:21,768 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 142 mSDsluCounter, 5422 mSDsCounter, 0 mSdLazyCounter, 11677 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 5529 SdHoareTripleChecker+Invalid, 11687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:21,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 5529 Invalid, 11687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11677 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-11-29 02:08:21,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-11-29 02:08:21,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 403. [2023-11-29 02:08:21,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 1.3233830845771144) internal successors, (532), 402 states have internal predecessors, (532), 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) [2023-11-29 02:08:21,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 532 transitions. [2023-11-29 02:08:21,788 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 532 transitions. Word has length 376 [2023-11-29 02:08:21,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:21,789 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 532 transitions. [2023-11-29 02:08:21,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.75) internal successors, (255), 68 states have internal predecessors, (255), 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) [2023-11-29 02:08:21,789 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 532 transitions. [2023-11-29 02:08:21,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2023-11-29 02:08:21,790 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:21,791 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 46, 46, 46, 8, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:08:21,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 02:08:21,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 02:08:21,991 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:21,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:21,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1467338976, now seen corresponding path program 4 times [2023-11-29 02:08:21,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:21,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933388127] [2023-11-29 02:08:21,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:21,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:31,579 INFO L134 CoverageAnalysis]: Checked inductivity of 8086 backedges. 0 proven. 4845 refuted. 0 times theorem prover too weak. 3241 trivial. 0 not checked. [2023-11-29 02:08:31,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:31,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933388127] [2023-11-29 02:08:31,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933388127] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:31,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126645137] [2023-11-29 02:08:31,580 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 02:08:31,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:31,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:31,581 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:31,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 02:08:33,488 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 02:08:33,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:08:33,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 8174 conjuncts, 190 conjunts are in the unsatisfiable core [2023-11-29 02:08:33,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:36,371 INFO L134 CoverageAnalysis]: Checked inductivity of 8086 backedges. 0 proven. 7831 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-11-29 02:08:36,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:08:42,200 INFO L134 CoverageAnalysis]: Checked inductivity of 8086 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 4935 trivial. 0 not checked. [2023-11-29 02:08:42,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126645137] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:08:42,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:08:42,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 96, 49] total 154 [2023-11-29 02:08:42,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260466163] [2023-11-29 02:08:42,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:08:42,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 154 states [2023-11-29 02:08:42,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:42,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2023-11-29 02:08:42,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2136, Invalid=21426, Unknown=0, NotChecked=0, Total=23562 [2023-11-29 02:08:42,206 INFO L87 Difference]: Start difference. First operand 403 states and 532 transitions. Second operand has 154 states, 154 states have (on average 3.435064935064935) internal successors, (529), 154 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:10:32,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:10:32,634 INFO L93 Difference]: Finished difference Result 626 states and 847 transitions. [2023-11-29 02:10:32,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2023-11-29 02:10:32,635 INFO L78 Accepts]: Start accepts. Automaton has has 154 states, 154 states have (on average 3.435064935064935) internal successors, (529), 154 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 391 [2023-11-29 02:10:32,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:10:32,638 INFO L225 Difference]: With dead ends: 626 [2023-11-29 02:10:32,638 INFO L226 Difference]: Without dead ends: 462 [2023-11-29 02:10:32,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 856 GetRequests, 688 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1142 ImplicationChecksByTransitivity, 99.5s TimeCoverageRelationStatistics Valid=3192, Invalid=25538, Unknown=0, NotChecked=0, Total=28730 [2023-11-29 02:10:32,641 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 1374 mSDsluCounter, 13058 mSDsCounter, 0 mSdLazyCounter, 29086 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 13213 SdHoareTripleChecker+Invalid, 29087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:10:32,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1374 Valid, 13213 Invalid, 29087 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 29086 Invalid, 0 Unknown, 0 Unchecked, 19.8s Time] [2023-11-29 02:10:32,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-11-29 02:10:32,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 460. [2023-11-29 02:10:32,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.3246187363834423) internal successors, (608), 459 states have internal predecessors, (608), 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) [2023-11-29 02:10:32,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 608 transitions. [2023-11-29 02:10:32,673 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 608 transitions. Word has length 391 [2023-11-29 02:10:32,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:10:32,674 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 608 transitions. [2023-11-29 02:10:32,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 154 states, 154 states have (on average 3.435064935064935) internal successors, (529), 154 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:10:32,675 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 608 transitions. [2023-11-29 02:10:32,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2023-11-29 02:10:32,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:10:32,678 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 64, 58, 58, 58, 8, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:10:32,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 02:10:32,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:10:32,878 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:10:32,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:10:32,879 INFO L85 PathProgramCache]: Analyzing trace with hash -607871255, now seen corresponding path program 5 times [2023-11-29 02:10:32,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:10:32,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591143598] [2023-11-29 02:10:32,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:32,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:10:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:42,983 INFO L134 CoverageAnalysis]: Checked inductivity of 11219 backedges. 0 proven. 5017 refuted. 0 times theorem prover too weak. 6202 trivial. 0 not checked. [2023-11-29 02:10:42,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:10:42,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591143598] [2023-11-29 02:10:42,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591143598] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:10:42,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425801773] [2023-11-29 02:10:42,983 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 02:10:42,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:10:42,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:10:42,984 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:10:42,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f9704f-a1af-42e4-87a2-c877dd1a9e1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process