./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-67.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/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_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-67.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/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_25845eba-92af-4f84-92db-b98d084de692/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 a52320cf15ef16183046f0f792382098821a237814ee842f46de00a84d4e09b2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:12:32,151 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:12:32,216 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:12:32,221 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:12:32,221 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:12:32,246 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:12:32,247 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:12:32,247 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:12:32,248 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:12:32,248 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:12:32,249 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:12:32,249 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:12:32,250 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:12:32,251 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:12:32,251 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:12:32,252 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:12:32,253 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:12:32,253 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:12:32,254 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:12:32,254 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:12:32,255 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:12:32,255 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:12:32,256 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:12:32,256 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:12:32,257 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:12:32,257 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:12:32,258 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:12:32,258 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:12:32,259 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:12:32,259 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:12:32,260 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:12:32,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:12:32,261 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:12:32,261 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:12:32,262 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:12:32,262 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:12:32,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:12:32,263 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:12:32,263 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:12:32,264 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:12:32,264 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:12:32,265 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:12:32,265 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_25845eba-92af-4f84-92db-b98d084de692/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a52320cf15ef16183046f0f792382098821a237814ee842f46de00a84d4e09b2 [2023-11-29 02:12:32,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:12:32,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:12:32,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:12:32,543 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:12:32,543 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:12:32,545 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-67.i [2023-11-29 02:12:35,331 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:12:35,524 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:12:35,525 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-67.i [2023-11-29 02:12:35,534 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/data/7445ac787/66ac77fabdc6495cbf9df1f951df81a9/FLAG4c9abc8a1 [2023-11-29 02:12:35,547 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/data/7445ac787/66ac77fabdc6495cbf9df1f951df81a9 [2023-11-29 02:12:35,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:12:35,550 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:12:35,551 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:12:35,551 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:12:35,557 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:12:35,557 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:12:35" (1/1) ... [2023-11-29 02:12:35,558 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ace0b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:35, skipping insertion in model container [2023-11-29 02:12:35,559 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:12:35" (1/1) ... [2023-11-29 02:12:35,598 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:12:35,737 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_25845eba-92af-4f84-92db-b98d084de692/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-67.i[917,930] [2023-11-29 02:12:35,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:12:35,807 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:12:35,820 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_25845eba-92af-4f84-92db-b98d084de692/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-67.i[917,930] [2023-11-29 02:12:35,852 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:12:35,872 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:12:35,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:35 WrapperNode [2023-11-29 02:12:35,873 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:12:35,874 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:12:35,874 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:12:35,874 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:12:35,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:35" (1/1) ... [2023-11-29 02:12:35,896 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:35" (1/1) ... [2023-11-29 02:12:35,935 INFO L138 Inliner]: procedures = 29, calls = 135, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 369 [2023-11-29 02:12:35,935 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:12:35,936 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:12:35,936 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:12:35,936 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:12:35,951 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:35" (1/1) ... [2023-11-29 02:12:35,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:35" (1/1) ... [2023-11-29 02:12:35,957 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:35" (1/1) ... [2023-11-29 02:12:35,981 INFO L175 MemorySlicer]: Split 106 memory accesses to 7 slices as follows [2, 6, 3, 13, 17, 30, 35]. 33 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 1, 1, 2, 2, 3, 3]. The 16 writes are split as follows [0, 1, 1, 2, 5, 3, 4]. [2023-11-29 02:12:35,981 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:35" (1/1) ... [2023-11-29 02:12:35,982 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:35" (1/1) ... [2023-11-29 02:12:36,001 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:35" (1/1) ... [2023-11-29 02:12:36,005 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:35" (1/1) ... [2023-11-29 02:12:36,009 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:35" (1/1) ... [2023-11-29 02:12:36,012 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:35" (1/1) ... [2023-11-29 02:12:36,019 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:12:36,020 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:12:36,020 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:12:36,021 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:12:36,022 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:35" (1/1) ... [2023-11-29 02:12:36,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:12:36,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:36,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:12:36,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:12:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:12:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-29 02:12:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-29 02:12:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-29 02:12:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-29 02:12:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-11-29 02:12:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2023-11-29 02:12:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2023-11-29 02:12:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 02:12:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 02:12:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 02:12:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 02:12:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 02:12:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 02:12:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-29 02:12:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-11-29 02:12:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-11-29 02:12:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2023-11-29 02:12:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2023-11-29 02:12:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2023-11-29 02:12:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2023-11-29 02:12:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2023-11-29 02:12:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 02:12:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 02:12:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 02:12:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 02:12:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 02:12:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 02:12:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-29 02:12:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2023-11-29 02:12:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2023-11-29 02:12:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2023-11-29 02:12:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2023-11-29 02:12:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2023-11-29 02:12:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2023-11-29 02:12:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2023-11-29 02:12:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 02:12:36,100 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 02:12:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:12:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 02:12:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 02:12:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 02:12:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 02:12:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 02:12:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 02:12:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:12:36,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:12:36,252 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:12:36,254 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:12:36,652 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:12:36,689 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:12:36,689 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 02:12:36,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:12:36 BoogieIcfgContainer [2023-11-29 02:12:36,689 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:12:36,692 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:12:36,693 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:12:36,696 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:12:36,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:12:35" (1/3) ... [2023-11-29 02:12:36,697 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d727851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:12:36, skipping insertion in model container [2023-11-29 02:12:36,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:12:35" (2/3) ... [2023-11-29 02:12:36,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d727851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:12:36, skipping insertion in model container [2023-11-29 02:12:36,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:12:36" (3/3) ... [2023-11-29 02:12:36,699 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-67.i [2023-11-29 02:12:36,720 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:12:36,721 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:12:36,769 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:12:36,774 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;@38061299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:12:36,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:12:36,778 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 69 states have (on average 1.4492753623188406) internal successors, (100), 70 states have internal predecessors, (100), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-29 02:12:36,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 02:12:36,790 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:36,791 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:12:36,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:36,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:36,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1085669197, now seen corresponding path program 1 times [2023-11-29 02:12:36,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:36,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699697347] [2023-11-29 02:12:36,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:36,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:37,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:37,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699697347] [2023-11-29 02:12:37,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 02:12:37,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021368624] [2023-11-29 02:12:37,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:37,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:37,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:37,047 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:37,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:12:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:37,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 02:12:37,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:37,363 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-11-29 02:12:37,363 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:12:37,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021368624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:12:37,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:12:37,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:12:37,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188777678] [2023-11-29 02:12:37,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:37,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:12:37,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:37,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:12:37,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:12:37,400 INFO L87 Difference]: Start difference. First operand has 84 states, 69 states have (on average 1.4492753623188406) internal successors, (100), 70 states have internal predecessors, (100), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:12:37,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:37,441 INFO L93 Difference]: Finished difference Result 165 states and 258 transitions. [2023-11-29 02:12:37,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:12:37,443 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2023-11-29 02:12:37,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:37,453 INFO L225 Difference]: With dead ends: 165 [2023-11-29 02:12:37,453 INFO L226 Difference]: Without dead ends: 82 [2023-11-29 02:12:37,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:12:37,460 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:37,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:12:37,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-29 02:12:37,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-11-29 02:12:37,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 68 states have internal predecessors, (95), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-29 02:12:37,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 119 transitions. [2023-11-29 02:12:37,506 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 119 transitions. Word has length 99 [2023-11-29 02:12:37,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:37,507 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 119 transitions. [2023-11-29 02:12:37,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:12:37,507 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 119 transitions. [2023-11-29 02:12:37,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 02:12:37,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:37,519 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:12:37,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:12:37,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 02:12:37,720 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:37,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:37,721 INFO L85 PathProgramCache]: Analyzing trace with hash -138099779, now seen corresponding path program 1 times [2023-11-29 02:12:37,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:37,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278583877] [2023-11-29 02:12:37,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:37,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:37,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:37,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278583877] [2023-11-29 02:12:37,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 02:12:37,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246655054] [2023-11-29 02:12:37,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:37,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:37,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:37,821 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:37,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:12:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:38,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:12:38,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:38,090 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-11-29 02:12:38,090 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:12:38,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246655054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:12:38,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:12:38,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:12:38,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058813414] [2023-11-29 02:12:38,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:38,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:12:38,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:38,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:12:38,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:12:38,095 INFO L87 Difference]: Start difference. First operand 82 states and 119 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:12:38,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:38,150 INFO L93 Difference]: Finished difference Result 169 states and 246 transitions. [2023-11-29 02:12:38,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:12:38,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2023-11-29 02:12:38,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:38,153 INFO L225 Difference]: With dead ends: 169 [2023-11-29 02:12:38,153 INFO L226 Difference]: Without dead ends: 88 [2023-11-29 02:12:38,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:12:38,156 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 10 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:38,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 334 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:12:38,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-29 02:12:38,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2023-11-29 02:12:38,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 70 states have (on average 1.3857142857142857) internal successors, (97), 70 states have internal predecessors, (97), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-29 02:12:38,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 121 transitions. [2023-11-29 02:12:38,172 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 121 transitions. Word has length 99 [2023-11-29 02:12:38,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:38,173 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 121 transitions. [2023-11-29 02:12:38,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:12:38,173 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 121 transitions. [2023-11-29 02:12:38,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 02:12:38,176 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:38,176 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:12:38,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:12:38,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 02:12:38,381 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:38,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:38,381 INFO L85 PathProgramCache]: Analyzing trace with hash -2014582597, now seen corresponding path program 1 times [2023-11-29 02:12:38,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:38,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673819860] [2023-11-29 02:12:38,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:38,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:38,438 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:12:38,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1808479553] [2023-11-29 02:12:38,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:38,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:38,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:38,440 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:38,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:12:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:38,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:12:38,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:38,685 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-29 02:12:38,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:12:38,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:38,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673819860] [2023-11-29 02:12:38,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:12:38,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808479553] [2023-11-29 02:12:38,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808479553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:12:38,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:12:38,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:12:38,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636391962] [2023-11-29 02:12:38,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:38,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:12:38,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:38,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:12:38,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:12:38,689 INFO L87 Difference]: Start difference. First operand 84 states and 121 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 02:12:38,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:38,736 INFO L93 Difference]: Finished difference Result 179 states and 258 transitions. [2023-11-29 02:12:38,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:12:38,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 99 [2023-11-29 02:12:38,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:38,739 INFO L225 Difference]: With dead ends: 179 [2023-11-29 02:12:38,739 INFO L226 Difference]: Without dead ends: 96 [2023-11-29 02:12:38,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:12:38,741 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 21 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:38,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 336 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:12:38,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-29 02:12:38,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 86. [2023-11-29 02:12:38,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 72 states have (on average 1.375) internal successors, (99), 72 states have internal predecessors, (99), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-29 02:12:38,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 123 transitions. [2023-11-29 02:12:38,753 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 123 transitions. Word has length 99 [2023-11-29 02:12:38,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:38,754 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 123 transitions. [2023-11-29 02:12:38,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 02:12:38,755 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 123 transitions. [2023-11-29 02:12:38,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 02:12:38,757 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:38,757 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:12:38,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 02:12:38,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:38,965 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:38,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:38,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1471038073, now seen corresponding path program 1 times [2023-11-29 02:12:38,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:38,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126946048] [2023-11-29 02:12:38,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:38,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:39,028 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:12:39,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567574673] [2023-11-29 02:12:39,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:39,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:39,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:39,030 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:39,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:12:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:39,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:12:39,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:39,251 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-29 02:12:39,251 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:12:39,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:39,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126946048] [2023-11-29 02:12:39,252 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:12:39,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567574673] [2023-11-29 02:12:39,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567574673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:12:39,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:12:39,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:12:39,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500447924] [2023-11-29 02:12:39,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:39,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:12:39,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:39,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:12:39,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:12:39,255 INFO L87 Difference]: Start difference. First operand 86 states and 123 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 02:12:39,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:39,292 INFO L93 Difference]: Finished difference Result 179 states and 256 transitions. [2023-11-29 02:12:39,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:12:39,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 99 [2023-11-29 02:12:39,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:39,295 INFO L225 Difference]: With dead ends: 179 [2023-11-29 02:12:39,295 INFO L226 Difference]: Without dead ends: 94 [2023-11-29 02:12:39,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:12:39,297 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 12 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:39,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 334 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:12:39,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-11-29 02:12:39,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2023-11-29 02:12:39,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 74 states have (on average 1.364864864864865) internal successors, (101), 74 states have internal predecessors, (101), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-29 02:12:39,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 125 transitions. [2023-11-29 02:12:39,307 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 125 transitions. Word has length 99 [2023-11-29 02:12:39,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:39,308 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 125 transitions. [2023-11-29 02:12:39,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 02:12:39,309 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 125 transitions. [2023-11-29 02:12:39,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 02:12:39,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:39,310 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:12:39,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 02:12:39,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:39,516 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:39,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:39,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1528296375, now seen corresponding path program 1 times [2023-11-29 02:12:39,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:39,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111380664] [2023-11-29 02:12:39,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:39,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:39,560 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:12:39,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [415682762] [2023-11-29 02:12:39,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:39,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:39,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:39,561 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:39,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25845eba-92af-4f84-92db-b98d084de692/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:12:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:39,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 02:12:39,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:41,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 02:12:41,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 59 [2023-11-29 02:12:41,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:12:41,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:12:41,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:12:41,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 35 [2023-11-29 02:12:41,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:12:41,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:12:41,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:12:41,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 33 [2023-11-29 02:12:41,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:12:41,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:12:41,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:12:41,775 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 02:12:41,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 207 treesize of output 103 [2023-11-29 02:12:41,814 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 149 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-11-29 02:12:41,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:12:42,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 02:12:42,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4429 treesize of output 3544 [2023-11-29 02:13:06,324 WARN L293 SmtUtils]: Spent 6.82s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:15:53,064 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:16:29,729 WARN L293 SmtUtils]: Spent 6.18s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:16:46,302 WARN L293 SmtUtils]: Spent 6.81s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:21:18,909 WARN L293 SmtUtils]: Spent 5.20s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:23:02,259 WARN L293 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 17 DAG size of output: 1 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:23:26,080 WARN L293 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 17 DAG size of output: 1 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:26:50,040 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:27:08,074 WARN L293 SmtUtils]: Spent 5.91s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:27:34,874 WARN L293 SmtUtils]: Spent 7.00s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)