./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/lunarlander_36_unsafe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/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_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/neural-networks/lunarlander_36_unsafe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/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_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/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 c09187be09ed31f49b6eb3a76ac5f31a03ec1cf2b77305d62cafcb26313dcdb1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:39:58,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:39:59,064 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-28 23:39:59,068 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:39:59,069 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:39:59,094 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:39:59,094 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:39:59,095 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:39:59,096 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:39:59,096 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:39:59,097 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:39:59,097 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:39:59,098 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:39:59,098 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:39:59,099 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:39:59,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:39:59,100 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:39:59,100 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:39:59,101 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:39:59,101 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:39:59,102 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:39:59,104 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:39:59,105 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:39:59,105 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:39:59,106 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:39:59,106 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:39:59,107 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:39:59,107 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:39:59,107 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:39:59,108 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:39:59,108 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:39:59,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:39:59,109 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:39:59,109 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:39:59,109 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:39:59,109 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:39:59,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:39:59,110 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:39:59,110 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:39:59,110 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:39:59,110 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:39:59,111 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:39:59,111 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_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c09187be09ed31f49b6eb3a76ac5f31a03ec1cf2b77305d62cafcb26313dcdb1 [2023-11-28 23:39:59,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:39:59,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:39:59,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:39:59,374 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:39:59,374 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:39:59,376 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/neural-networks/lunarlander_36_unsafe.c-amalgamation.i [2023-11-28 23:40:02,188 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:40:02,547 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:40:02,547 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/sv-benchmarks/c/neural-networks/lunarlander_36_unsafe.c-amalgamation.i [2023-11-28 23:40:02,575 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/data/6ab56ee61/033b1433a575420db8c15e07a9b65144/FLAGa8c60c388 [2023-11-28 23:40:02,588 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/data/6ab56ee61/033b1433a575420db8c15e07a9b65144 [2023-11-28 23:40:02,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:40:02,592 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:40:02,593 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:40:02,593 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:40:02,598 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:40:02,598 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:40:02" (1/1) ... [2023-11-28 23:40:02,600 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4edebc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:02, skipping insertion in model container [2023-11-28 23:40:02,600 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:40:02" (1/1) ... [2023-11-28 23:40:02,671 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:40:03,494 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_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/sv-benchmarks/c/neural-networks/lunarlander_36_unsafe.c-amalgamation.i[64319,64332] [2023-11-28 23:40:03,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:40:03,792 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:40:03,837 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_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/sv-benchmarks/c/neural-networks/lunarlander_36_unsafe.c-amalgamation.i[64319,64332] [2023-11-28 23:40:03,920 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:40:04,126 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:40:04,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:04 WrapperNode [2023-11-28 23:40:04,126 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:40:04,127 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:40:04,127 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:40:04,127 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:40:04,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:04" (1/1) ... [2023-11-28 23:40:04,235 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:04" (1/1) ... [2023-11-28 23:40:04,476 INFO L138 Inliner]: procedures = 620, calls = 5148, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5469 [2023-11-28 23:40:04,476 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:40:04,477 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:40:04,477 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:40:04,477 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:40:04,489 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:04" (1/1) ... [2023-11-28 23:40:04,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:04" (1/1) ... [2023-11-28 23:40:04,535 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:04" (1/1) ... [2023-11-28 23:40:04,625 INFO L175 MemorySlicer]: Split 5123 memory accesses to 12 slices as follows [2, 7, 513, 65, 25, 4097, 65, 257, 5, 14, 70, 3]. 80 percent of accesses are in the largest equivalence class. The 5077 initializations are split as follows [2, 7, 512, 64, 0, 4096, 64, 256, 4, 8, 64, 0]. The 14 writes are split as follows [0, 0, 0, 0, 8, 0, 0, 0, 0, 3, 2, 1]. [2023-11-28 23:40:04,625 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:04" (1/1) ... [2023-11-28 23:40:04,625 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:04" (1/1) ... [2023-11-28 23:40:04,707 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:04" (1/1) ... [2023-11-28 23:40:04,719 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:04" (1/1) ... [2023-11-28 23:40:04,730 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:04" (1/1) ... [2023-11-28 23:40:04,740 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:04" (1/1) ... [2023-11-28 23:40:04,759 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:40:04,760 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:40:04,760 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:40:04,760 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:40:04,761 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:04" (1/1) ... [2023-11-28 23:40:04,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:40:04,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:40:04,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:40:04,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:40:04,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-28 23:40:04,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-28 23:40:04,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-28 23:40:04,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-28 23:40:04,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-11-28 23:40:04,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2023-11-28 23:40:04,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2023-11-28 23:40:04,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2023-11-28 23:40:04,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2023-11-28 23:40:04,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2023-11-28 23:40:04,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2023-11-28 23:40:04,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2023-11-28 23:40:04,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 23:40:04,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2023-11-28 23:40:04,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2023-11-28 23:40:04,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2023-11-28 23:40:04,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2023-11-28 23:40:04,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2023-11-28 23:40:04,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2023-11-28 23:40:04,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2023-11-28 23:40:04,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2023-11-28 23:40:04,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2023-11-28 23:40:04,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2023-11-28 23:40:04,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2023-11-28 23:40:04,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2023-11-28 23:40:04,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-11-28 23:40:04,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-11-28 23:40:04,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2023-11-28 23:40:04,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2023-11-28 23:40:04,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2023-11-28 23:40:04,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2023-11-28 23:40:04,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2023-11-28 23:40:04,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2023-11-28 23:40:04,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2023-11-28 23:40:04,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2023-11-28 23:40:04,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2023-11-28 23:40:04,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2023-11-28 23:40:04,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:40:04,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:40:04,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:40:04,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 23:40:04,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:40:04,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 23:40:04,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 23:40:04,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-28 23:40:04,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-28 23:40:04,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-28 23:40:04,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-28 23:40:04,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-28 23:40:04,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-28 23:40:04,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-28 23:40:04,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-28 23:40:04,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-28 23:40:05,050 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:40:05,052 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:40:11,913 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:40:12,284 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:40:12,285 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-11-28 23:40:12,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:40:12 BoogieIcfgContainer [2023-11-28 23:40:12,285 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:40:12,288 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:40:12,288 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:40:12,291 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:40:12,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:40:02" (1/3) ... [2023-11-28 23:40:12,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47859c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:40:12, skipping insertion in model container [2023-11-28 23:40:12,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:40:04" (2/3) ... [2023-11-28 23:40:12,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47859c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:40:12, skipping insertion in model container [2023-11-28 23:40:12,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:40:12" (3/3) ... [2023-11-28 23:40:12,294 INFO L112 eAbstractionObserver]: Analyzing ICFG lunarlander_36_unsafe.c-amalgamation.i [2023-11-28 23:40:12,314 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:40:12,314 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-28 23:40:12,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:40:12,368 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;@570a33ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:40:12,369 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-28 23:40:12,373 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) [2023-11-28 23:40:12,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-28 23:40:12,381 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:40:12,382 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] [2023-11-28 23:40:12,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:40:12,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:40:12,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1219428462, now seen corresponding path program 1 times [2023-11-28 23:40:12,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:40:12,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165691238] [2023-11-28 23:40:12,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:12,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:40:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:13,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:40:13,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:40:13,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165691238] [2023-11-28 23:40:13,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165691238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:40:13,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:40:13,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:40:13,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146248555] [2023-11-28 23:40:13,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:40:13,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-28 23:40:13,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:40:13,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-28 23:40:13,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 23:40:13,604 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) [2023-11-28 23:40:13,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:40:13,971 INFO L93 Difference]: Finished difference Result 113 states and 195 transitions. [2023-11-28 23:40:13,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-28 23:40:13,974 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 [2023-11-28 23:40:13,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:40:13,982 INFO L225 Difference]: With dead ends: 113 [2023-11-28 23:40:13,982 INFO L226 Difference]: Without dead ends: 56 [2023-11-28 23:40:13,986 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 [2023-11-28 23:40:13,989 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:40:13,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 23:40:14,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-28 23:40:14,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-28 23:40:14,023 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) [2023-11-28 23:40:14,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2023-11-28 23:40:14,026 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 39 [2023-11-28 23:40:14,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:40:14,027 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2023-11-28 23:40:14,027 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) [2023-11-28 23:40:14,027 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2023-11-28 23:40:14,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-28 23:40:14,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:40:14,029 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] [2023-11-28 23:40:14,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:40:14,030 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:40:14,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:40:14,030 INFO L85 PathProgramCache]: Analyzing trace with hash -481557306, now seen corresponding path program 1 times [2023-11-28 23:40:14,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:40:14,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223210739] [2023-11-28 23:40:14,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:14,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:40:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:14,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:40:14,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:40:14,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223210739] [2023-11-28 23:40:14,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223210739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:40:14,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:40:14,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:40:14,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675391748] [2023-11-28 23:40:14,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:40:14,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:40:14,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:40:14,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:40:14,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:40:14,972 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) [2023-11-28 23:40:15,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:40:15,585 INFO L93 Difference]: Finished difference Result 104 states and 143 transitions. [2023-11-28 23:40:15,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:40:15,586 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 [2023-11-28 23:40:15,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:40:15,587 INFO L225 Difference]: With dead ends: 104 [2023-11-28 23:40:15,587 INFO L226 Difference]: Without dead ends: 56 [2023-11-28 23:40:15,588 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 [2023-11-28 23:40:15,589 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, 0.6s IncrementalHoareTripleChecker+Time [2023-11-28 23:40:15,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-28 23:40:15,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-28 23:40:15,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-28 23:40:15,596 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) [2023-11-28 23:40:15,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2023-11-28 23:40:15,598 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 39 [2023-11-28 23:40:15,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:40:15,598 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2023-11-28 23:40:15,598 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) [2023-11-28 23:40:15,598 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2023-11-28 23:40:15,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-28 23:40:15,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:40:15,600 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] [2023-11-28 23:40:15,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 23:40:15,600 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:40:15,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:40:15,601 INFO L85 PathProgramCache]: Analyzing trace with hash -756316920, now seen corresponding path program 1 times [2023-11-28 23:40:15,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:40:15,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316067243] [2023-11-28 23:40:15,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:15,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:40:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:16,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:40:16,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:40:16,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316067243] [2023-11-28 23:40:16,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316067243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:40:16,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:40:16,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:40:16,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357264954] [2023-11-28 23:40:16,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:40:16,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:40:16,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:40:16,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:40:16,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:40:16,813 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) [2023-11-28 23:40:17,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:40:17,346 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2023-11-28 23:40:17,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:40:17,346 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 [2023-11-28 23:40:17,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:40:17,348 INFO L225 Difference]: With dead ends: 87 [2023-11-28 23:40:17,348 INFO L226 Difference]: Without dead ends: 57 [2023-11-28 23:40:17,348 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 [2023-11-28 23:40:17,350 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, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:40:17,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 23:40:17,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-28 23:40:17,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-11-28 23:40:17,356 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) [2023-11-28 23:40:17,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 77 transitions. [2023-11-28 23:40:17,357 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 77 transitions. Word has length 39 [2023-11-28 23:40:17,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:40:17,367 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 77 transitions. [2023-11-28 23:40:17,367 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) [2023-11-28 23:40:17,368 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 77 transitions. [2023-11-28 23:40:17,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-28 23:40:17,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:40:17,369 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] [2023-11-28 23:40:17,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 23:40:17,369 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:40:17,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:40:17,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1790905389, now seen corresponding path program 1 times [2023-11-28 23:40:17,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:40:17,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530985254] [2023-11-28 23:40:17,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:17,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:40:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:18,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:40:18,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:40:18,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530985254] [2023-11-28 23:40:18,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530985254] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:40:18,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781513051] [2023-11-28 23:40:18,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:18,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:18,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:40:18,436 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:40:18,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:40:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:20,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 6102 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:40:20,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:40:20,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:40:20,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:40:20,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:40:20,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781513051] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 23:40:20,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:40:20,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-28 23:40:20,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75508293] [2023-11-28 23:40:20,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:40:20,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:40:20,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:40:20,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:40:20,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:40:20,142 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) [2023-11-28 23:40:20,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:40:20,538 INFO L93 Difference]: Finished difference Result 78 states and 106 transitions. [2023-11-28 23:40:20,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:40:20,538 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 [2023-11-28 23:40:20,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:40:20,539 INFO L225 Difference]: With dead ends: 78 [2023-11-28 23:40:20,540 INFO L226 Difference]: Without dead ends: 58 [2023-11-28 23:40:20,540 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 [2023-11-28 23:40:20,541 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 [2023-11-28 23:40:20,541 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] [2023-11-28 23:40:20,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-28 23:40:20,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-11-28 23:40:20,545 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) [2023-11-28 23:40:20,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2023-11-28 23:40:20,546 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 40 [2023-11-28 23:40:20,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:40:20,546 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2023-11-28 23:40:20,546 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) [2023-11-28 23:40:20,546 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2023-11-28 23:40:20,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-28 23:40:20,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:40:20,548 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] [2023-11-28 23:40:20,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 23:40:20,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:20,749 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:40:20,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:40:20,749 INFO L85 PathProgramCache]: Analyzing trace with hash -793809956, now seen corresponding path program 1 times [2023-11-28 23:40:20,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:40:20,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188753416] [2023-11-28 23:40:20,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:20,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:40:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:22,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:40:22,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:40:22,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188753416] [2023-11-28 23:40:22,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188753416] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:40:22,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888238034] [2023-11-28 23:40:22,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:22,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:22,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:40:22,137 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:40:22,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:40:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:23,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 6120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:40:23,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:40:23,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:40:23,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:40:23,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:40:23,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888238034] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 23:40:23,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:40:23,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-28 23:40:23,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997833061] [2023-11-28 23:40:23,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:40:23,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:40:23,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:40:23,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:40:23,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:40:23,702 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) [2023-11-28 23:40:24,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:40:24,185 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2023-11-28 23:40:24,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:40:24,185 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 [2023-11-28 23:40:24,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:40:24,186 INFO L225 Difference]: With dead ends: 69 [2023-11-28 23:40:24,186 INFO L226 Difference]: Without dead ends: 59 [2023-11-28 23:40:24,187 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 [2023-11-28 23:40:24,188 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:40:24,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 108 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 23:40:24,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-28 23:40:24,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-28 23:40:24,192 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) [2023-11-28 23:40:24,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2023-11-28 23:40:24,193 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 79 transitions. Word has length 43 [2023-11-28 23:40:24,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:40:24,193 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 79 transitions. [2023-11-28 23:40:24,193 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) [2023-11-28 23:40:24,193 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 79 transitions. [2023-11-28 23:40:24,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-28 23:40:24,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:40:24,194 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] [2023-11-28 23:40:24,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 23:40:24,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:24,395 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:40:24,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:40:24,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1367907231, now seen corresponding path program 1 times [2023-11-28 23:40:24,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:40:24,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497918526] [2023-11-28 23:40:24,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:24,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:40:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:25,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:40:25,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:40:25,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497918526] [2023-11-28 23:40:25,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497918526] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:40:25,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808330316] [2023-11-28 23:40:25,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:25,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:25,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:40:25,532 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:40:25,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:40:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:27,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 6138 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-28 23:40:27,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:40:27,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:40:27,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:40:27,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:40:27,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808330316] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 23:40:27,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:40:27,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-28 23:40:27,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373563905] [2023-11-28 23:40:27,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:40:27,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:40:27,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:40:27,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:40:27,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:40:27,048 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) [2023-11-28 23:40:27,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:40:27,390 INFO L93 Difference]: Finished difference Result 86 states and 116 transitions. [2023-11-28 23:40:27,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:40:27,390 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 [2023-11-28 23:40:27,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:40:27,391 INFO L225 Difference]: With dead ends: 86 [2023-11-28 23:40:27,391 INFO L226 Difference]: Without dead ends: 60 [2023-11-28 23:40:27,392 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 [2023-11-28 23:40:27,392 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:40:27,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 23:40:27,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-28 23:40:27,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-11-28 23:40:27,397 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) [2023-11-28 23:40:27,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2023-11-28 23:40:27,397 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 46 [2023-11-28 23:40:27,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:40:27,398 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2023-11-28 23:40:27,398 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) [2023-11-28 23:40:27,398 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2023-11-28 23:40:27,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-28 23:40:27,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:40:27,399 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] [2023-11-28 23:40:27,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 23:40:27,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:27,600 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:40:27,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:40:27,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1170803542, now seen corresponding path program 1 times [2023-11-28 23:40:27,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:40:27,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402688018] [2023-11-28 23:40:27,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:27,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:40:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:28,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:40:28,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:40:28,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402688018] [2023-11-28 23:40:28,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402688018] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:40:28,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165329567] [2023-11-28 23:40:28,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:28,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:28,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:40:28,424 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:40:28,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:40:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:29,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 6144 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 23:40:29,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:40:29,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:40:29,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:40:29,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-28 23:40:29,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165329567] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 23:40:29,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:40:29,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-28 23:40:29,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660747071] [2023-11-28 23:40:29,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:40:29,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:40:29,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:40:29,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:40:29,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:40:29,772 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) [2023-11-28 23:40:30,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:40:30,205 INFO L93 Difference]: Finished difference Result 76 states and 101 transitions. [2023-11-28 23:40:30,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:40:30,206 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 [2023-11-28 23:40:30,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:40:30,206 INFO L225 Difference]: With dead ends: 76 [2023-11-28 23:40:30,206 INFO L226 Difference]: Without dead ends: 61 [2023-11-28 23:40:30,207 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 [2023-11-28 23:40:30,207 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 [2023-11-28 23:40:30,208 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] [2023-11-28 23:40:30,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-28 23:40:30,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-11-28 23:40:30,212 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) [2023-11-28 23:40:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2023-11-28 23:40:30,213 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 49 [2023-11-28 23:40:30,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:40:30,213 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2023-11-28 23:40:30,214 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) [2023-11-28 23:40:30,214 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2023-11-28 23:40:30,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-28 23:40:30,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:40:30,215 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] [2023-11-28 23:40:30,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 23:40:30,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:30,416 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:40:30,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:40:30,417 INFO L85 PathProgramCache]: Analyzing trace with hash 559835403, now seen corresponding path program 1 times [2023-11-28 23:40:30,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:40:30,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022446673] [2023-11-28 23:40:30,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:30,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:40:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:31,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-28 23:40:31,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:40:31,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022446673] [2023-11-28 23:40:31,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022446673] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:40:31,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86618120] [2023-11-28 23:40:31,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:31,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:31,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:40:31,195 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:40:31,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:40:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:32,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 6150 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 23:40:32,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:40:32,615 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-28 23:40:32,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:40:32,632 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:40:32,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86618120] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 23:40:32,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:40:32,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-28 23:40:32,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962826966] [2023-11-28 23:40:32,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:40:32,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:40:32,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:40:32,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:40:32,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:40:32,634 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) [2023-11-28 23:40:33,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:40:33,026 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2023-11-28 23:40:33,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:40:33,027 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 [2023-11-28 23:40:33,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:40:33,028 INFO L225 Difference]: With dead ends: 66 [2023-11-28 23:40:33,028 INFO L226 Difference]: Without dead ends: 62 [2023-11-28 23:40:33,028 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 [2023-11-28 23:40:33,029 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 [2023-11-28 23:40:33,030 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] [2023-11-28 23:40:33,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-28 23:40:33,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-28 23:40:33,034 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) [2023-11-28 23:40:33,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2023-11-28 23:40:33,035 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 52 [2023-11-28 23:40:33,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:40:33,035 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2023-11-28 23:40:33,035 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) [2023-11-28 23:40:33,035 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2023-11-28 23:40:33,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-28 23:40:33,036 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:40:33,037 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] [2023-11-28 23:40:33,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 23:40:33,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:33,237 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:40:33,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:40:33,238 INFO L85 PathProgramCache]: Analyzing trace with hash 948688438, now seen corresponding path program 1 times [2023-11-28 23:40:33,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:40:33,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733337601] [2023-11-28 23:40:33,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:33,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:40:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:34,097 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:40:34,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:40:34,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733337601] [2023-11-28 23:40:34,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733337601] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:40:34,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464869232] [2023-11-28 23:40:34,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:34,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:34,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:40:34,099 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:40:34,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 23:40:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:35,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 6156 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-28 23:40:35,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:40:35,552 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:40:35,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:40:35,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:40:35,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464869232] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:40:35,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:40:35,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-11-28 23:40:35,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655711046] [2023-11-28 23:40:35,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:40:35,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:40:35,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:40:35,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:40:35,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:40:35,581 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) [2023-11-28 23:40:36,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:40:36,803 INFO L93 Difference]: Finished difference Result 107 states and 146 transitions. [2023-11-28 23:40:36,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 23:40:36,804 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 [2023-11-28 23:40:36,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:40:36,804 INFO L225 Difference]: With dead ends: 107 [2023-11-28 23:40:36,804 INFO L226 Difference]: Without dead ends: 72 [2023-11-28 23:40:36,805 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 [2023-11-28 23:40:36,806 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 13 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:40:36,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 273 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-28 23:40:36,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-28 23:40:36,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-11-28 23:40:36,812 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) [2023-11-28 23:40:36,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2023-11-28 23:40:36,813 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 55 [2023-11-28 23:40:36,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:40:36,814 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2023-11-28 23:40:36,814 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) [2023-11-28 23:40:36,814 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2023-11-28 23:40:36,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-28 23:40:36,815 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:40:36,816 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] [2023-11-28 23:40:36,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-28 23:40:37,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:37,020 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:40:37,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:40:37,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1849547982, now seen corresponding path program 2 times [2023-11-28 23:40:37,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:40:37,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362083749] [2023-11-28 23:40:37,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:37,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:40:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:38,011 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-28 23:40:38,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:40:38,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362083749] [2023-11-28 23:40:38,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362083749] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:40:38,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882726631] [2023-11-28 23:40:38,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:40:38,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:38,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:40:38,013 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:40:38,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 23:40:39,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:40:39,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:40:39,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 6221 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-28 23:40:39,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:40:39,532 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:40:39,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:40:39,567 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-28 23:40:39,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882726631] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 23:40:39,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:40:39,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 8] total 12 [2023-11-28 23:40:39,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224622139] [2023-11-28 23:40:39,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:40:39,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:40:39,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:40:39,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:40:39,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:40:39,570 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) [2023-11-28 23:40:40,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:40:40,209 INFO L93 Difference]: Finished difference Result 82 states and 108 transitions. [2023-11-28 23:40:40,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:40:40,210 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 [2023-11-28 23:40:40,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:40:40,210 INFO L225 Difference]: With dead ends: 82 [2023-11-28 23:40:40,210 INFO L226 Difference]: Without dead ends: 73 [2023-11-28 23:40:40,211 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 [2023-11-28 23:40:40,212 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.6s IncrementalHoareTripleChecker+Time [2023-11-28 23:40:40,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-28 23:40:40,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-28 23:40:40,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-28 23:40:40,218 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) [2023-11-28 23:40:40,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 96 transitions. [2023-11-28 23:40:40,218 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 96 transitions. Word has length 65 [2023-11-28 23:40:40,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:40:40,219 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 96 transitions. [2023-11-28 23:40:40,219 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) [2023-11-28 23:40:40,219 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 96 transitions. [2023-11-28 23:40:40,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-28 23:40:40,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:40:40,220 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] [2023-11-28 23:40:40,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-28 23:40:40,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-28 23:40:40,421 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:40:40,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:40:40,421 INFO L85 PathProgramCache]: Analyzing trace with hash 938461958, now seen corresponding path program 1 times [2023-11-28 23:40:40,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:40:40,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967955764] [2023-11-28 23:40:40,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:40,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:40:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-28 23:40:41,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:40:41,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967955764] [2023-11-28 23:40:41,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967955764] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:40:41,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597198991] [2023-11-28 23:40:41,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:41,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:41,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:40:41,355 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:40:41,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 23:40:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:42,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 6235 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 23:40:42,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:40:42,785 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 23:40:42,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:40:42,816 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-28 23:40:42,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597198991] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:40:42,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:40:42,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 11 [2023-11-28 23:40:42,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242768717] [2023-11-28 23:40:42,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:40:42,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-28 23:40:42,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:40:42,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-28 23:40:42,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:40:42,818 INFO L87 Difference]: Start difference. First operand 73 states and 96 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 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) [2023-11-28 23:40:43,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:40:43,867 INFO L93 Difference]: Finished difference Result 128 states and 173 transitions. [2023-11-28 23:40:43,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 23:40:43,868 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 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 [2023-11-28 23:40:43,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:40:43,869 INFO L225 Difference]: With dead ends: 128 [2023-11-28 23:40:43,869 INFO L226 Difference]: Without dead ends: 83 [2023-11-28 23:40:43,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:40:43,870 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 19 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:40:43,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 374 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-28 23:40:43,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-28 23:40:43,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-11-28 23:40:43,874 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) [2023-11-28 23:40:43,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 109 transitions. [2023-11-28 23:40:43,875 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 109 transitions. Word has length 68 [2023-11-28 23:40:43,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:40:43,875 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 109 transitions. [2023-11-28 23:40:43,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 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) [2023-11-28 23:40:43,875 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 109 transitions. [2023-11-28 23:40:43,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-28 23:40:43,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:40:43,876 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] [2023-11-28 23:40:43,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-28 23:40:44,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-28 23:40:44,077 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:40:44,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:40:44,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1365987656, now seen corresponding path program 2 times [2023-11-28 23:40:44,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:40:44,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608007532] [2023-11-28 23:40:44,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:44,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:40:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:45,322 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-28 23:40:45,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:40:45,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608007532] [2023-11-28 23:40:45,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608007532] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:40:45,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116931250] [2023-11-28 23:40:45,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:40:45,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:45,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:40:45,324 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:40:45,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 23:40:46,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:40:46,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:40:46,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 6300 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-28 23:40:46,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:40:46,899 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-28 23:40:46,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:40:46,952 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-28 23:40:46,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116931250] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:40:46,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:40:46,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 5] total 14 [2023-11-28 23:40:46,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560164680] [2023-11-28 23:40:46,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:40:46,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-28 23:40:46,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:40:46,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-28 23:40:46,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:40:46,954 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) [2023-11-28 23:40:48,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:40:48,474 INFO L93 Difference]: Finished difference Result 146 states and 196 transitions. [2023-11-28 23:40:48,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:40:48,474 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 [2023-11-28 23:40:48,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:40:48,475 INFO L225 Difference]: With dead ends: 146 [2023-11-28 23:40:48,475 INFO L226 Difference]: Without dead ends: 92 [2023-11-28 23:40:48,475 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 [2023-11-28 23:40:48,476 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 27 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:40:48,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 552 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-28 23:40:48,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-28 23:40:48,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2023-11-28 23:40:48,482 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) [2023-11-28 23:40:48,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 118 transitions. [2023-11-28 23:40:48,483 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 118 transitions. Word has length 78 [2023-11-28 23:40:48,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:40:48,483 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 118 transitions. [2023-11-28 23:40:48,484 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) [2023-11-28 23:40:48,484 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 118 transitions. [2023-11-28 23:40:48,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-28 23:40:48,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:40:48,485 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] [2023-11-28 23:40:48,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-28 23:40:48,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-28 23:40:48,685 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:40:48,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:40:48,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1427743436, now seen corresponding path program 3 times [2023-11-28 23:40:48,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:40:48,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422515308] [2023-11-28 23:40:48,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:48,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:40:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:49,771 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-11-28 23:40:49,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:40:49,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422515308] [2023-11-28 23:40:49,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422515308] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:40:49,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436713214] [2023-11-28 23:40:49,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 23:40:49,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:49,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:40:49,773 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:40:49,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-28 23:40:51,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-28 23:40:51,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:40:51,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 6167 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-28 23:40:51,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:40:51,414 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 23:40:51,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:40:51,441 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-28 23:40:51,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436713214] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 23:40:51,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:40:51,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 11 [2023-11-28 23:40:51,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983766515] [2023-11-28 23:40:51,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:40:51,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:40:51,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:40:51,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:40:51,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:40:51,443 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) [2023-11-28 23:40:51,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:40:51,908 INFO L93 Difference]: Finished difference Result 149 states and 198 transitions. [2023-11-28 23:40:51,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:40:51,909 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 [2023-11-28 23:40:51,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:40:51,909 INFO L225 Difference]: With dead ends: 149 [2023-11-28 23:40:51,909 INFO L226 Difference]: Without dead ends: 91 [2023-11-28 23:40:51,910 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 [2023-11-28 23:40:51,910 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 [2023-11-28 23:40:51,910 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] [2023-11-28 23:40:51,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-28 23:40:51,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-11-28 23:40:51,915 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) [2023-11-28 23:40:51,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 119 transitions. [2023-11-28 23:40:51,915 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 119 transitions. Word has length 85 [2023-11-28 23:40:51,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:40:51,915 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 119 transitions. [2023-11-28 23:40:51,915 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) [2023-11-28 23:40:51,915 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 119 transitions. [2023-11-28 23:40:51,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-28 23:40:51,916 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:40:51,916 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] [2023-11-28 23:40:51,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-28 23:40:52,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-28 23:40:52,117 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:40:52,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:40:52,117 INFO L85 PathProgramCache]: Analyzing trace with hash -254940994, now seen corresponding path program 1 times [2023-11-28 23:40:52,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:40:52,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5632843] [2023-11-28 23:40:52,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:52,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:40:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:53,401 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-28 23:40:53,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:40:53,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5632843] [2023-11-28 23:40:53,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5632843] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:40:53,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584526132] [2023-11-28 23:40:53,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:53,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:53,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:40:53,403 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:40:53,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-28 23:40:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:54,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 6357 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-28 23:40:54,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:40:55,057 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-28 23:40:55,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:40:55,236 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-28 23:40:55,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584526132] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:40:55,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:40:55,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 22 [2023-11-28 23:40:55,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615962823] [2023-11-28 23:40:55,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:40:55,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-28 23:40:55,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:40:55,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-28 23:40:55,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2023-11-28 23:40:55,239 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) [2023-11-28 23:40:57,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:40:57,755 INFO L93 Difference]: Finished difference Result 173 states and 235 transitions. [2023-11-28 23:40:57,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-28 23:40:57,755 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 [2023-11-28 23:40:57,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:40:57,756 INFO L225 Difference]: With dead ends: 173 [2023-11-28 23:40:57,756 INFO L226 Difference]: Without dead ends: 112 [2023-11-28 23:40:57,757 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 [2023-11-28 23:40:57,757 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 56 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:40:57,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 946 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-28 23:40:57,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-28 23:40:57,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2023-11-28 23:40:57,765 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) [2023-11-28 23:40:57,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 144 transitions. [2023-11-28 23:40:57,765 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 144 transitions. Word has length 88 [2023-11-28 23:40:57,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:40:57,766 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 144 transitions. [2023-11-28 23:40:57,766 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) [2023-11-28 23:40:57,766 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 144 transitions. [2023-11-28 23:40:57,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-28 23:40:57,767 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:40:57,767 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] [2023-11-28 23:40:57,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-28 23:40:57,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-28 23:40:57,968 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:40:57,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:40:57,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2039192615, now seen corresponding path program 2 times [2023-11-28 23:40:57,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:40:57,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122186435] [2023-11-28 23:40:57,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:57,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:40:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:59,204 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-11-28 23:40:59,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:40:59,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122186435] [2023-11-28 23:40:59,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122186435] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:40:59,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959507698] [2023-11-28 23:40:59,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:40:59,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:59,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:40:59,206 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:40:59,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-28 23:41:00,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:41:00,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:41:00,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 6476 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-28 23:41:00,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:41:00,998 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-28 23:41:00,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:41:01,330 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 80 proven. 70 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-28 23:41:01,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959507698] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:41:01,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:41:01,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 14] total 26 [2023-11-28 23:41:01,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821802057] [2023-11-28 23:41:01,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:41:01,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-28 23:41:01,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:01,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-28 23:41:01,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2023-11-28 23:41:01,333 INFO L87 Difference]: Start difference. First operand 110 states and 144 transitions. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 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) [2023-11-28 23:41:03,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:03,523 INFO L93 Difference]: Finished difference Result 211 states and 286 transitions. [2023-11-28 23:41:03,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-28 23:41:03,524 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 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 [2023-11-28 23:41:03,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:03,525 INFO L225 Difference]: With dead ends: 211 [2023-11-28 23:41:03,525 INFO L226 Difference]: Without dead ends: 132 [2023-11-28 23:41:03,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2023-11-28 23:41:03,526 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 61 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:03,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 871 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-28 23:41:03,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-28 23:41:03,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-11-28 23:41:03,532 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) [2023-11-28 23:41:03,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 173 transitions. [2023-11-28 23:41:03,533 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 173 transitions. Word has length 107 [2023-11-28 23:41:03,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:03,533 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 173 transitions. [2023-11-28 23:41:03,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 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) [2023-11-28 23:41:03,534 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 173 transitions. [2023-11-28 23:41:03,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-28 23:41:03,535 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:03,535 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] [2023-11-28 23:41:03,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-28 23:41:03,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-28 23:41:03,735 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:03,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:03,736 INFO L85 PathProgramCache]: Analyzing trace with hash 885828515, now seen corresponding path program 3 times [2023-11-28 23:41:03,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:03,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45555845] [2023-11-28 23:41:03,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:03,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:05,231 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-28 23:41:05,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:05,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45555845] [2023-11-28 23:41:05,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45555845] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:41:05,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416954080] [2023-11-28 23:41:05,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 23:41:05,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:05,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:41:05,233 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:41:05,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-28 23:41:07,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-28 23:41:07,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:41:07,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 6167 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-28 23:41:07,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:41:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-11-28 23:41:07,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:41:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2023-11-28 23:41:07,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416954080] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 23:41:07,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:41:07,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9, 5] total 13 [2023-11-28 23:41:07,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406441697] [2023-11-28 23:41:07,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:07,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:41:07,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:07,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:41:07,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:41:07,140 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) [2023-11-28 23:41:07,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:07,897 INFO L93 Difference]: Finished difference Result 185 states and 244 transitions. [2023-11-28 23:41:07,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:41:07,897 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 [2023-11-28 23:41:07,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:07,899 INFO L225 Difference]: With dead ends: 185 [2023-11-28 23:41:07,899 INFO L226 Difference]: Without dead ends: 133 [2023-11-28 23:41:07,899 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 [2023-11-28 23:41:07,900 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:07,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-28 23:41:07,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-28 23:41:07,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-11-28 23:41:07,906 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) [2023-11-28 23:41:07,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 174 transitions. [2023-11-28 23:41:07,907 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 174 transitions. Word has length 129 [2023-11-28 23:41:07,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:07,907 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 174 transitions. [2023-11-28 23:41:07,907 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) [2023-11-28 23:41:07,908 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 174 transitions. [2023-11-28 23:41:07,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-28 23:41:07,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:07,909 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] [2023-11-28 23:41:07,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-28 23:41:08,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-28 23:41:08,109 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:08,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:08,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1904446591, now seen corresponding path program 1 times [2023-11-28 23:41:08,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:08,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238216211] [2023-11-28 23:41:08,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:08,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:09,457 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-11-28 23:41:09,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:09,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238216211] [2023-11-28 23:41:09,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238216211] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:41:09,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637718957] [2023-11-28 23:41:09,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:09,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:09,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:41:09,459 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:41:09,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-28 23:41:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:11,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 6627 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-28 23:41:11,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:41:11,382 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-28 23:41:11,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:41:11,805 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2023-11-28 23:41:11,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637718957] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:41:11,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:41:11,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 24, 13] total 42 [2023-11-28 23:41:11,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408784874] [2023-11-28 23:41:11,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:41:11,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-28 23:41:11,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:11,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-28 23:41:11,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1514, Unknown=0, NotChecked=0, Total=1722 [2023-11-28 23:41:11,808 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) [2023-11-28 23:41:22,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:22,193 INFO L93 Difference]: Finished difference Result 271 states and 370 transitions. [2023-11-28 23:41:22,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-28 23:41:22,193 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 [2023-11-28 23:41:22,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:22,194 INFO L225 Difference]: With dead ends: 271 [2023-11-28 23:41:22,194 INFO L226 Difference]: Without dead ends: 170 [2023-11-28 23:41:22,195 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 [2023-11-28 23:41:22,196 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 157 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 2518 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 2061 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:22,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 2061 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2518 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-28 23:41:22,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-28 23:41:22,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-11-28 23:41:22,205 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) [2023-11-28 23:41:22,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 223 transitions. [2023-11-28 23:41:22,206 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 223 transitions. Word has length 132 [2023-11-28 23:41:22,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:22,206 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 223 transitions. [2023-11-28 23:41:22,206 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) [2023-11-28 23:41:22,206 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 223 transitions. [2023-11-28 23:41:22,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-28 23:41:22,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:22,207 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] [2023-11-28 23:41:22,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-28 23:41:22,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-28 23:41:22,408 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:22,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:22,408 INFO L85 PathProgramCache]: Analyzing trace with hash 81179708, now seen corresponding path program 2 times [2023-11-28 23:41:22,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:22,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270852424] [2023-11-28 23:41:22,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:22,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:23,841 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 935 trivial. 0 not checked. [2023-11-28 23:41:23,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:23,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270852424] [2023-11-28 23:41:23,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270852424] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:41:23,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032467806] [2023-11-28 23:41:23,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:41:23,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:23,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:41:23,843 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:41:23,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-28 23:41:25,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:41:25,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:41:25,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 6854 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-28 23:41:25,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:41:25,808 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2023-11-28 23:41:25,808 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:41:26,978 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 370 proven. 420 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2023-11-28 23:41:26,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032467806] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:41:26,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:41:26,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 28] total 49 [2023-11-28 23:41:26,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916142752] [2023-11-28 23:41:26,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:41:26,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-28 23:41:26,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:26,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-28 23:41:26,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=2081, Unknown=0, NotChecked=0, Total=2352 [2023-11-28 23:41:26,982 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) [2023-11-28 23:41:46,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:46,085 INFO L93 Difference]: Finished difference Result 350 states and 477 transitions. [2023-11-28 23:41:46,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-28 23:41:46,086 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 [2023-11-28 23:41:46,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:46,087 INFO L225 Difference]: With dead ends: 350 [2023-11-28 23:41:46,087 INFO L226 Difference]: Without dead ends: 213 [2023-11-28 23:41:46,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=607, Invalid=3053, Unknown=0, NotChecked=0, Total=3660 [2023-11-28 23:41:46,090 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 210 mSDsluCounter, 2209 mSDsCounter, 0 mSdLazyCounter, 2256 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 2259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:46,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 2276 Invalid, 2259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2256 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-28 23:41:46,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-28 23:41:46,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2023-11-28 23:41:46,101 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) [2023-11-28 23:41:46,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 280 transitions. [2023-11-28 23:41:46,103 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 280 transitions. Word has length 169 [2023-11-28 23:41:46,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:46,103 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 280 transitions. [2023-11-28 23:41:46,103 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) [2023-11-28 23:41:46,103 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 280 transitions. [2023-11-28 23:41:46,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-28 23:41:46,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:46,105 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] [2023-11-28 23:41:46,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-28 23:41:46,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-28 23:41:46,305 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:46,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:46,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2072713407, now seen corresponding path program 3 times [2023-11-28 23:41:46,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:46,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458169495] [2023-11-28 23:41:46,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:46,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:49,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1762 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 761 trivial. 0 not checked. [2023-11-28 23:41:49,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:49,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458169495] [2023-11-28 23:41:49,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458169495] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:41:49,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808771144] [2023-11-28 23:41:49,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 23:41:49,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:49,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:41:49,786 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:41:49,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-28 23:41:52,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-28 23:41:52,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:41:53,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 6267 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-28 23:41:53,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:41:53,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1762 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1750 trivial. 0 not checked. [2023-11-28 23:41:53,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:41:53,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1762 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1760 trivial. 0 not checked. [2023-11-28 23:41:53,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808771144] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 23:41:53,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:41:53,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [29, 6] total 35 [2023-11-28 23:41:53,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781557173] [2023-11-28 23:41:53,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:53,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:41:53,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:53,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:41:53,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1092, Unknown=0, NotChecked=0, Total=1190 [2023-11-28 23:41:53,230 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) [2023-11-28 23:41:53,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:53,644 INFO L93 Difference]: Finished difference Result 303 states and 400 transitions. [2023-11-28 23:41:53,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:41:53,644 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 [2023-11-28 23:41:53,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:53,646 INFO L225 Difference]: With dead ends: 303 [2023-11-28 23:41:53,646 INFO L226 Difference]: Without dead ends: 214 [2023-11-28 23:41:53,647 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 [2023-11-28 23:41:53,647 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2023-11-28 23:41:53,647 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] [2023-11-28 23:41:53,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-28 23:41:53,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2023-11-28 23:41:53,655 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) [2023-11-28 23:41:53,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 281 transitions. [2023-11-28 23:41:53,656 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 281 transitions. Word has length 212 [2023-11-28 23:41:53,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:53,656 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 281 transitions. [2023-11-28 23:41:53,656 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) [2023-11-28 23:41:53,656 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 281 transitions. [2023-11-28 23:41:53,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-28 23:41:53,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:53,657 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] [2023-11-28 23:41:53,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-28 23:41:53,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:53,858 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:53,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:53,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1680534967, now seen corresponding path program 1 times [2023-11-28 23:41:53,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:53,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117626773] [2023-11-28 23:41:53,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:53,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:57,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1763 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2023-11-28 23:41:57,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:57,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117626773] [2023-11-28 23:41:57,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117626773] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:41:57,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103506496] [2023-11-28 23:41:57,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:57,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:57,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:41:57,445 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:41:57,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-28 23:41:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:59,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 7122 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-28 23:41:59,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:41:59,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1763 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 1725 trivial. 0 not checked. [2023-11-28 23:41:59,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:41:59,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1763 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1761 trivial. 0 not checked. [2023-11-28 23:41:59,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103506496] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 23:41:59,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:41:59,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [29, 13] total 42 [2023-11-28 23:41:59,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067317013] [2023-11-28 23:41:59,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:59,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:41:59,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:59,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:41:59,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1610, Unknown=0, NotChecked=0, Total=1722 [2023-11-28 23:41:59,535 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) [2023-11-28 23:41:59,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:59,997 INFO L93 Difference]: Finished difference Result 393 states and 520 transitions. [2023-11-28 23:41:59,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:41:59,997 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 [2023-11-28 23:41:59,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:59,999 INFO L225 Difference]: With dead ends: 393 [2023-11-28 23:41:59,999 INFO L226 Difference]: Without dead ends: 215 [2023-11-28 23:42:00,000 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 [2023-11-28 23:42:00,001 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:42:00,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 111 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 23:42:00,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-11-28 23:42:00,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2023-11-28 23:42:00,013 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) [2023-11-28 23:42:00,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 282 transitions. [2023-11-28 23:42:00,014 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 282 transitions. Word has length 213 [2023-11-28 23:42:00,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:42:00,015 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 282 transitions. [2023-11-28 23:42:00,015 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) [2023-11-28 23:42:00,015 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 282 transitions. [2023-11-28 23:42:00,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-11-28 23:42:00,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:42:00,016 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] [2023-11-28 23:42:00,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-28 23:42:00,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:42:00,218 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:42:00,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:42:00,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1869442415, now seen corresponding path program 1 times [2023-11-28 23:42:00,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:42:00,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896413543] [2023-11-28 23:42:00,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:42:00,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:42:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2023-11-28 23:42:03,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:42:03,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896413543] [2023-11-28 23:42:03,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896413543] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:42:03,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220521480] [2023-11-28 23:42:03,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:42:03,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:42:03,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:42:03,774 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:42:03,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-28 23:42:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:05,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 7127 conjuncts, 94 conjunts are in the unsatisfiable core [2023-11-28 23:42:05,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:42:06,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1698 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-28 23:42:06,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:42:07,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 1049 trivial. 0 not checked. [2023-11-28 23:42:07,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220521480] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:42:07,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:42:07,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 48, 25] total 75 [2023-11-28 23:42:07,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495994244] [2023-11-28 23:42:07,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:42:07,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2023-11-28 23:42:07,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:42:07,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2023-11-28 23:42:07,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=702, Invalid=4848, Unknown=0, NotChecked=0, Total=5550 [2023-11-28 23:42:07,859 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) [2023-11-28 23:45:03,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:45:03,342 INFO L93 Difference]: Finished difference Result 384 states and 531 transitions. [2023-11-28 23:45:03,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-11-28 23:45:03,343 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 [2023-11-28 23:45:03,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:45:03,345 INFO L225 Difference]: With dead ends: 384 [2023-11-28 23:45:03,345 INFO L226 Difference]: Without dead ends: 292 [2023-11-28 23:45:03,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 169.9s TimeCoverageRelationStatistics Valid=1758, Invalid=7554, Unknown=0, NotChecked=0, Total=9312 [2023-11-28 23:45:03,349 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 601 mSDsluCounter, 4250 mSDsCounter, 0 mSdLazyCounter, 7511 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 4350 SdHoareTripleChecker+Invalid, 7513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-11-28 23:45:03,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 4350 Invalid, 7513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7511 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-11-28 23:45:03,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-11-28 23:45:03,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 290. [2023-11-28 23:45:03,359 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) [2023-11-28 23:45:03,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 382 transitions. [2023-11-28 23:45:03,360 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 382 transitions. Word has length 214 [2023-11-28 23:45:03,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:45:03,361 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 382 transitions. [2023-11-28 23:45:03,361 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) [2023-11-28 23:45:03,361 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 382 transitions. [2023-11-28 23:45:03,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2023-11-28 23:45:03,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:45:03,362 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] [2023-11-28 23:45:03,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-28 23:45:03,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-28 23:45:03,563 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:45:03,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:03,563 INFO L85 PathProgramCache]: Analyzing trace with hash 293783672, now seen corresponding path program 2 times [2023-11-28 23:45:03,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:03,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066111665] [2023-11-28 23:45:03,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:03,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4279 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 3199 trivial. 0 not checked. [2023-11-28 23:45:07,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:07,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066111665] [2023-11-28 23:45:07,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066111665] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:45:07,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715096013] [2023-11-28 23:45:07,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:45:07,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:45:07,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:45:07,594 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:45:07,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-28 23:45:09,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:45:09,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:45:09,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 7577 conjuncts, 114 conjunts are in the unsatisfiable core [2023-11-28 23:45:09,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:45:09,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4279 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 3199 trivial. 0 not checked. [2023-11-28 23:45:09,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:45:13,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4279 backedges. 1558 proven. 2160 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-11-28 23:45:13,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715096013] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:45:13,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:45:13,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 58] total 87 [2023-11-28 23:45:13,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484261642] [2023-11-28 23:45:13,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:45:13,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2023-11-28 23:45:13,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:13,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2023-11-28 23:45:13,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1011, Invalid=6471, Unknown=0, NotChecked=0, Total=7482 [2023-11-28 23:45:13,856 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) [2023-11-28 23:51:24,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:51:24,419 INFO L93 Difference]: Finished difference Result 541 states and 744 transitions. [2023-11-28 23:51:24,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-11-28 23:51:24,420 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 [2023-11-28 23:51:24,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:51:24,423 INFO L225 Difference]: With dead ends: 541 [2023-11-28 23:51:24,423 INFO L226 Difference]: Without dead ends: 377 [2023-11-28 23:51:24,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 364.4s TimeCoverageRelationStatistics Valid=2600, Invalid=10278, Unknown=4, NotChecked=0, Total=12882 [2023-11-28 23:51:24,427 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 769 mSDsluCounter, 4483 mSDsCounter, 0 mSdLazyCounter, 5913 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 4565 SdHoareTripleChecker+Invalid, 5916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:51:24,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 4565 Invalid, 5916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5913 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2023-11-28 23:51:24,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-28 23:51:24,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2023-11-28 23:51:24,439 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) [2023-11-28 23:51:24,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 498 transitions. [2023-11-28 23:51:24,440 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 498 transitions. Word has length 289 [2023-11-28 23:51:24,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:51:24,441 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 498 transitions. [2023-11-28 23:51:24,441 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) [2023-11-28 23:51:24,441 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 498 transitions. [2023-11-28 23:51:24,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2023-11-28 23:51:24,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:51:24,443 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] [2023-11-28 23:51:24,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-28 23:51:24,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:24,643 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:51:24,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:24,644 INFO L85 PathProgramCache]: Analyzing trace with hash 265422961, now seen corresponding path program 3 times [2023-11-28 23:51:24,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:24,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486540767] [2023-11-28 23:51:24,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:24,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:32,958 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 4676 refuted. 0 times theorem prover too weak. 3199 trivial. 0 not checked. [2023-11-28 23:51:32,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:32,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486540767] [2023-11-28 23:51:32,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486540767] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:51:32,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304813030] [2023-11-28 23:51:32,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 23:51:32,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:32,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:51:32,960 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:51:32,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-28 23:51:35,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-28 23:51:35,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:51:35,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 6267 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-28 23:51:35,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:51:35,963 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 7858 trivial. 0 not checked. [2023-11-28 23:51:35,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:51:36,188 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7873 trivial. 0 not checked. [2023-11-28 23:51:36,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304813030] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:51:36,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:51:36,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 7, 5] total 67 [2023-11-28 23:51:36,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489827117] [2023-11-28 23:51:36,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:51:36,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-11-28 23:51:36,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:36,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-11-28 23:51:36,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=4226, Unknown=0, NotChecked=0, Total=4422 [2023-11-28 23:51:36,193 INFO L87 Difference]: Start difference. First operand 377 states and 498 transitions. Second operand has 67 states, 67 states have (on average 3.8059701492537314) internal successors, (255), 67 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) [2023-11-28 23:51:43,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:51:43,259 INFO L93 Difference]: Finished difference Result 735 states and 978 transitions. [2023-11-28 23:51:43,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-11-28 23:51:43,259 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 3.8059701492537314) internal successors, (255), 67 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 [2023-11-28 23:51:43,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:51:43,261 INFO L225 Difference]: With dead ends: 735 [2023-11-28 23:51:43,261 INFO L226 Difference]: Without dead ends: 394 [2023-11-28 23:51:43,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 811 GetRequests, 744 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=212, Invalid=4480, Unknown=0, NotChecked=0, Total=4692 [2023-11-28 23:51:43,263 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 127 mSDsluCounter, 5019 mSDsCounter, 0 mSdLazyCounter, 11092 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5128 SdHoareTripleChecker+Invalid, 11094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-11-28 23:51:43,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5128 Invalid, 11094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11092 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-11-28 23:51:43,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-11-28 23:51:43,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 392. [2023-11-28 23:51:43,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 1.3222506393861893) internal successors, (517), 391 states have internal predecessors, (517), 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) [2023-11-28 23:51:43,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 517 transitions. [2023-11-28 23:51:43,280 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 517 transitions. Word has length 376 [2023-11-28 23:51:43,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:51:43,280 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 517 transitions. [2023-11-28 23:51:43,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 3.8059701492537314) internal successors, (255), 67 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) [2023-11-28 23:51:43,281 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 517 transitions. [2023-11-28 23:51:43,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2023-11-28 23:51:43,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:51:43,282 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] [2023-11-28 23:51:43,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-28 23:51:43,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:43,483 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:51:43,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:43,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1467338976, now seen corresponding path program 4 times [2023-11-28 23:51:43,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:43,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523886398] [2023-11-28 23:51:43,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:43,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 8086 backedges. 0 proven. 4845 refuted. 0 times theorem prover too weak. 3241 trivial. 0 not checked. [2023-11-28 23:51:52,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:52,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523886398] [2023-11-28 23:51:52,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523886398] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:51:52,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467568868] [2023-11-28 23:51:52,812 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-28 23:51:52,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:52,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:51:52,813 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:51:52,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-28 23:51:55,045 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-28 23:51:55,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:51:55,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 8174 conjuncts, 190 conjunts are in the unsatisfiable core [2023-11-28 23:51:55,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:51:57,895 INFO L134 CoverageAnalysis]: Checked inductivity of 8086 backedges. 0 proven. 7831 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-11-28 23:51:57,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 8086 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 4935 trivial. 0 not checked. [2023-11-28 23:52:03,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467568868] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:52:03,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:52:03,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 96, 49] total 154 [2023-11-28 23:52:03,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173192855] [2023-11-28 23:52:03,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:03,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 154 states [2023-11-28 23:52:03,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:03,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2023-11-28 23:52:03,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2136, Invalid=21426, Unknown=0, NotChecked=0, Total=23562 [2023-11-28 23:52:03,566 INFO L87 Difference]: Start difference. First operand 392 states and 517 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) [2023-11-28 23:53:59,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:53:59,719 INFO L93 Difference]: Finished difference Result 615 states and 832 transitions. [2023-11-28 23:53:59,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2023-11-28 23:53:59,720 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 [2023-11-28 23:53:59,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:53:59,722 INFO L225 Difference]: With dead ends: 615 [2023-11-28 23:53:59,722 INFO L226 Difference]: Without dead ends: 451 [2023-11-28 23:53:59,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 856 GetRequests, 688 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1142 ImplicationChecksByTransitivity, 102.9s TimeCoverageRelationStatistics Valid=3192, Invalid=25538, Unknown=0, NotChecked=0, Total=28730 [2023-11-28 23:53:59,725 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 1315 mSDsluCounter, 14374 mSDsCounter, 0 mSdLazyCounter, 31302 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 14529 SdHoareTripleChecker+Invalid, 31303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2023-11-28 23:53:59,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 14529 Invalid, 31303 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 31302 Invalid, 0 Unknown, 0 Unchecked, 21.8s Time] [2023-11-28 23:53:59,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2023-11-28 23:53:59,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 449. [2023-11-28 23:53:59,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.3236607142857142) internal successors, (593), 448 states have internal predecessors, (593), 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) [2023-11-28 23:53:59,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 593 transitions. [2023-11-28 23:53:59,742 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 593 transitions. Word has length 391 [2023-11-28 23:53:59,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:53:59,742 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 593 transitions. [2023-11-28 23:53:59,742 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) [2023-11-28 23:53:59,742 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 593 transitions. [2023-11-28 23:53:59,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2023-11-28 23:53:59,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:53:59,744 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] [2023-11-28 23:53:59,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-28 23:53:59,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:53:59,945 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:53:59,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:53:59,945 INFO L85 PathProgramCache]: Analyzing trace with hash -607871255, now seen corresponding path program 5 times [2023-11-28 23:53:59,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:53:59,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543929252] [2023-11-28 23:53:59,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:53:59,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:54:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:09,900 INFO L134 CoverageAnalysis]: Checked inductivity of 11219 backedges. 0 proven. 5017 refuted. 0 times theorem prover too weak. 6202 trivial. 0 not checked. [2023-11-28 23:54:09,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:54:09,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543929252] [2023-11-28 23:54:09,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543929252] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:54:09,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316871243] [2023-11-28 23:54:09,901 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-28 23:54:09,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:54:09,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:54:09,902 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:54:09,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f29aef-3d54-4738-bcc2-6d1ce6c03045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process