./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1 --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 f77e8c9f93ca54d94eb905f2ce3291ad784a62b1b2b1f919a3731c7174a0c943 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:04:45,165 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:04:45,217 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 07:04:45,222 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:04:45,222 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:04:45,243 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:04:45,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:04:45,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:04:45,244 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:04:45,244 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:04:45,244 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:04:45,245 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:04:45,245 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:04:45,245 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:04:45,245 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:04:45,245 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:04:45,245 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:04:45,245 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:04:45,245 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:04:45,246 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:04:45,246 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:04:45,246 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:04:45,246 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:04:45,246 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:04:45,246 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:04:45,246 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:04:45,246 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:04:45,246 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:04:45,246 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:04:45,246 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:04:45,247 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:04:45,247 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:04:45,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:04:45,247 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:04:45,247 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:04:45,247 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:04:45,247 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:04:45,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:04:45,247 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:04:45,247 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:04:45,248 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:04:45,248 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:04:45,248 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:04:45,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:04:45,248 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:04:45,248 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:04:45,248 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:04:45,248 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:04:45,248 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1 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 -> f77e8c9f93ca54d94eb905f2ce3291ad784a62b1b2b1f919a3731c7174a0c943 [2024-12-02 07:04:45,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:04:45,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:04:45,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:04:45,462 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:04:45,462 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:04:45,463 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i [2024-12-02 07:04:48,042 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/data/9a4ee4ed5/07f2ebdde1924d3bb653ffa5c0928980/FLAG1293e701f [2024-12-02 07:04:48,251 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:04:48,251 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i [2024-12-02 07:04:48,258 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/data/9a4ee4ed5/07f2ebdde1924d3bb653ffa5c0928980/FLAG1293e701f [2024-12-02 07:04:48,615 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/data/9a4ee4ed5/07f2ebdde1924d3bb653ffa5c0928980 [2024-12-02 07:04:48,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:04:48,618 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:04:48,619 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:04:48,619 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:04:48,623 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:04:48,623 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:04:48" (1/1) ... [2024-12-02 07:04:48,624 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34831268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:48, skipping insertion in model container [2024-12-02 07:04:48,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:04:48" (1/1) ... [2024-12-02 07:04:48,640 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:04:48,777 WARN L250 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_ef1e7815-dcec-4527-b3b0-785a72078616/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i[916,929] [2024-12-02 07:04:48,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:04:48,852 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:04:48,863 WARN L250 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_ef1e7815-dcec-4527-b3b0-785a72078616/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i[916,929] [2024-12-02 07:04:48,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:04:48,915 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:04:48,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:48 WrapperNode [2024-12-02 07:04:48,916 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:04:48,917 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:04:48,917 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:04:48,917 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:04:48,924 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:48" (1/1) ... [2024-12-02 07:04:48,938 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:48" (1/1) ... [2024-12-02 07:04:48,974 INFO L138 Inliner]: procedures = 29, calls = 244, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 810 [2024-12-02 07:04:48,974 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:04:48,975 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:04:48,975 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:04:48,975 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:04:48,985 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:48" (1/1) ... [2024-12-02 07:04:48,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:48" (1/1) ... [2024-12-02 07:04:48,991 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:48" (1/1) ... [2024-12-02 07:04:49,017 INFO L175 MemorySlicer]: Split 199 memory accesses to 18 slices as follows [2, 3, 11, 8, 12, 13, 6, 14, 5, 22, 22, 14, 16, 8, 8, 3, 23, 9]. 12 percent of accesses are in the largest equivalence class. The 19 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 19 writes are split as follows [0, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]. [2024-12-02 07:04:49,017 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:48" (1/1) ... [2024-12-02 07:04:49,017 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:48" (1/1) ... [2024-12-02 07:04:49,037 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:48" (1/1) ... [2024-12-02 07:04:49,039 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:48" (1/1) ... [2024-12-02 07:04:49,045 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:48" (1/1) ... [2024-12-02 07:04:49,050 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:48" (1/1) ... [2024-12-02 07:04:49,053 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:48" (1/1) ... [2024-12-02 07:04:49,061 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:04:49,062 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:04:49,062 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:04:49,062 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:04:49,063 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:48" (1/1) ... [2024-12-02 07:04:49,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:04:49,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:04:49,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:04:49,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:04:49,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:04:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 07:04:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 07:04:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 07:04:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 07:04:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 07:04:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 07:04:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-12-02 07:04:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-12-02 07:04:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-12-02 07:04:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-12-02 07:04:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-12-02 07:04:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-12-02 07:04:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-12-02 07:04:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-12-02 07:04:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-12-02 07:04:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-12-02 07:04:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2024-12-02 07:04:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#17 [2024-12-02 07:04:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-12-02 07:04:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-12-02 07:04:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-12-02 07:04:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-12-02 07:04:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-12-02 07:04:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-12-02 07:04:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-12-02 07:04:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-12-02 07:04:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-12-02 07:04:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-12-02 07:04:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-12-02 07:04:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-12-02 07:04:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#12 [2024-12-02 07:04:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#13 [2024-12-02 07:04:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#14 [2024-12-02 07:04:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#15 [2024-12-02 07:04:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#16 [2024-12-02 07:04:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#17 [2024-12-02 07:04:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-12-02 07:04:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-12-02 07:04:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-12-02 07:04:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-12-02 07:04:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-12-02 07:04:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-12-02 07:04:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-12-02 07:04:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-12-02 07:04:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-12-02 07:04:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-12-02 07:04:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-12-02 07:04:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-12-02 07:04:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#12 [2024-12-02 07:04:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#13 [2024-12-02 07:04:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#14 [2024-12-02 07:04:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#15 [2024-12-02 07:04:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#16 [2024-12-02 07:04:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#17 [2024-12-02 07:04:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 07:04:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 07:04:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 07:04:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 07:04:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 07:04:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 07:04:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 07:04:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-12-02 07:04:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-12-02 07:04:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-12-02 07:04:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-12-02 07:04:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-12-02 07:04:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-12-02 07:04:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-12-02 07:04:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-12-02 07:04:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-12-02 07:04:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2024-12-02 07:04:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2024-12-02 07:04:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-12-02 07:04:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-12-02 07:04:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-12-02 07:04:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-12-02 07:04:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-12-02 07:04:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-12-02 07:04:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-12-02 07:04:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-12-02 07:04:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-12-02 07:04:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-12-02 07:04:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-12-02 07:04:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-12-02 07:04:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#12 [2024-12-02 07:04:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#13 [2024-12-02 07:04:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#14 [2024-12-02 07:04:49,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#15 [2024-12-02 07:04:49,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#16 [2024-12-02 07:04:49,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#17 [2024-12-02 07:04:49,133 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 07:04:49,133 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 07:04:49,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:04:49,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 07:04:49,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 07:04:49,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 07:04:49,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 07:04:49,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 07:04:49,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 07:04:49,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 07:04:49,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 07:04:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 07:04:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 07:04:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 07:04:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 07:04:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 07:04:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 07:04:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 07:04:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-02 07:04:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-02 07:04:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:04:49,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:04:49,349 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:04:49,351 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:04:50,017 INFO L? ?]: Removed 236 outVars from TransFormulas that were not future-live. [2024-12-02 07:04:50,017 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:04:50,030 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:04:50,030 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 07:04:50,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:04:50 BoogieIcfgContainer [2024-12-02 07:04:50,030 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:04:50,032 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:04:50,032 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:04:50,037 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:04:50,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:04:48" (1/3) ... [2024-12-02 07:04:50,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea902dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:04:50, skipping insertion in model container [2024-12-02 07:04:50,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:48" (2/3) ... [2024-12-02 07:04:50,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea902dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:04:50, skipping insertion in model container [2024-12-02 07:04:50,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:04:50" (3/3) ... [2024-12-02 07:04:50,039 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-80.i [2024-12-02 07:04:50,053 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:04:50,055 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-p_file-80.i that has 2 procedures, 154 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 07:04:50,108 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:04:50,116 INFO L333 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, 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;@27782c76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:04:50,116 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 07:04:50,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 154 states, 134 states have (on average 1.455223880597015) internal successors, (195), 135 states have internal predecessors, (195), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 07:04:50,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 07:04:50,132 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:04:50,133 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:04:50,133 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:04:50,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:04:50,138 INFO L85 PathProgramCache]: Analyzing trace with hash 329443271, now seen corresponding path program 1 times [2024-12-02 07:04:50,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:04:50,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289670286] [2024-12-02 07:04:50,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:04:50,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:04:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:04:50,470 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-12-02 07:04:50,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:04:50,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289670286] [2024-12-02 07:04:50,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289670286] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:04:50,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077766103] [2024-12-02 07:04:50,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:04:50,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:04:50,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:04:50,475 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:04:50,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:04:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:04:50,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 07:04:50,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:04:50,887 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-12-02 07:04:50,887 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:04:50,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077766103] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:04:50,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:04:50,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 07:04:50,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972255511] [2024-12-02 07:04:50,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:04:50,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:04:50,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:04:50,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:04:50,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:04:50,914 INFO L87 Difference]: Start difference. First operand has 154 states, 134 states have (on average 1.455223880597015) internal successors, (195), 135 states have internal predecessors, (195), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 07:04:50,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:04:50,942 INFO L93 Difference]: Finished difference Result 301 states and 469 transitions. [2024-12-02 07:04:50,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:04:50,944 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2024-12-02 07:04:50,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:04:50,948 INFO L225 Difference]: With dead ends: 301 [2024-12-02 07:04:50,948 INFO L226 Difference]: Without dead ends: 150 [2024-12-02 07:04:50,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:04:50,953 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:04:50,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:04:50,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-12-02 07:04:50,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-12-02 07:04:50,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 131 states have (on average 1.4351145038167938) internal successors, (188), 131 states have internal predecessors, (188), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 07:04:50,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 222 transitions. [2024-12-02 07:04:50,990 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 222 transitions. Word has length 153 [2024-12-02 07:04:50,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:04:50,990 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 222 transitions. [2024-12-02 07:04:50,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 07:04:50,990 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 222 transitions. [2024-12-02 07:04:50,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 07:04:50,993 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:04:50,993 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:04:51,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:04:51,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 07:04:51,194 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:04:51,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:04:51,195 INFO L85 PathProgramCache]: Analyzing trace with hash 545041713, now seen corresponding path program 1 times [2024-12-02 07:04:51,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:04:51,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134082660] [2024-12-02 07:04:51,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:04:51,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:04:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:04:51,502 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-12-02 07:04:51,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:04:51,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134082660] [2024-12-02 07:04:51,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134082660] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:04:51,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:04:51,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:04:51,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611006054] [2024-12-02 07:04:51,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:04:51,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:04:51,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:04:51,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:04:51,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:04:51,505 INFO L87 Difference]: Start difference. First operand 150 states and 222 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 07:04:51,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:04:51,549 INFO L93 Difference]: Finished difference Result 299 states and 444 transitions. [2024-12-02 07:04:51,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:04:51,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2024-12-02 07:04:51,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:04:51,552 INFO L225 Difference]: With dead ends: 299 [2024-12-02 07:04:51,552 INFO L226 Difference]: Without dead ends: 152 [2024-12-02 07:04:51,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:04:51,553 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:04:51,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 649 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:04:51,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-12-02 07:04:51,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2024-12-02 07:04:51,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 133 states have (on average 1.4285714285714286) internal successors, (190), 133 states have internal predecessors, (190), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 07:04:51,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 224 transitions. [2024-12-02 07:04:51,566 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 224 transitions. Word has length 153 [2024-12-02 07:04:51,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:04:51,568 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 224 transitions. [2024-12-02 07:04:51,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 07:04:51,568 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 224 transitions. [2024-12-02 07:04:51,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 07:04:51,570 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:04:51,570 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:04:51,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:04:51,571 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:04:51,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:04:51,571 INFO L85 PathProgramCache]: Analyzing trace with hash -114489809, now seen corresponding path program 1 times [2024-12-02 07:04:51,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:04:51,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963461995] [2024-12-02 07:04:51,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:04:51,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:04:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:04:51,860 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-12-02 07:04:51,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:04:51,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963461995] [2024-12-02 07:04:51,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963461995] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:04:51,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040044132] [2024-12-02 07:04:51,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:04:51,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:04:51,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:04:51,863 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:04:51,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:04:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:04:52,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:04:52,237 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:04:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-12-02 07:04:52,281 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:04:52,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040044132] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:04:52,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:04:52,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-12-02 07:04:52,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115646521] [2024-12-02 07:04:52,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:04:52,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:04:52,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:04:52,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:04:52,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:04:52,284 INFO L87 Difference]: Start difference. First operand 152 states and 224 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-12-02 07:04:52,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:04:52,323 INFO L93 Difference]: Finished difference Result 304 states and 449 transitions. [2024-12-02 07:04:52,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:04:52,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 153 [2024-12-02 07:04:52,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:04:52,327 INFO L225 Difference]: With dead ends: 304 [2024-12-02 07:04:52,327 INFO L226 Difference]: Without dead ends: 155 [2024-12-02 07:04:52,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:04:52,329 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 1 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:04:52,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 646 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:04:52,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-12-02 07:04:52,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2024-12-02 07:04:52,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 135 states have (on average 1.4222222222222223) internal successors, (192), 135 states have internal predecessors, (192), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 07:04:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 226 transitions. [2024-12-02 07:04:52,341 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 226 transitions. Word has length 153 [2024-12-02 07:04:52,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:04:52,342 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 226 transitions. [2024-12-02 07:04:52,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-12-02 07:04:52,342 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 226 transitions. [2024-12-02 07:04:52,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 07:04:52,346 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:04:52,346 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:04:52,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 07:04:52,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:04:52,547 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:04:52,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:04:52,547 INFO L85 PathProgramCache]: Analyzing trace with hash 565568561, now seen corresponding path program 1 times [2024-12-02 07:04:52,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:04:52,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107668722] [2024-12-02 07:04:52,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:04:52,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:04:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:04:52,921 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-12-02 07:04:52,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:04:52,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107668722] [2024-12-02 07:04:52,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107668722] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:04:52,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883659401] [2024-12-02 07:04:52,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:04:52,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:04:52,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:04:52,924 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:04:52,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:04:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:04:53,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:04:53,293 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:04:53,326 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-12-02 07:04:53,326 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:04:53,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883659401] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:04:53,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:04:53,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-12-02 07:04:53,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605929938] [2024-12-02 07:04:53,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:04:53,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:04:53,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:04:53,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:04:53,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:04:53,329 INFO L87 Difference]: Start difference. First operand 154 states and 226 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-12-02 07:04:53,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:04:53,367 INFO L93 Difference]: Finished difference Result 308 states and 453 transitions. [2024-12-02 07:04:53,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:04:53,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 153 [2024-12-02 07:04:53,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:04:53,370 INFO L225 Difference]: With dead ends: 308 [2024-12-02 07:04:53,370 INFO L226 Difference]: Without dead ends: 157 [2024-12-02 07:04:53,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:04:53,371 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 1 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:04:53,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 647 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:04:53,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-12-02 07:04:53,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2024-12-02 07:04:53,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 137 states have (on average 1.416058394160584) internal successors, (194), 137 states have internal predecessors, (194), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 07:04:53,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 228 transitions. [2024-12-02 07:04:53,383 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 228 transitions. Word has length 153 [2024-12-02 07:04:53,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:04:53,383 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 228 transitions. [2024-12-02 07:04:53,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-12-02 07:04:53,384 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 228 transitions. [2024-12-02 07:04:53,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 07:04:53,386 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:04:53,386 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:04:53,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 07:04:53,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:04:53,587 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:04:53,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:04:53,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1954391373, now seen corresponding path program 1 times [2024-12-02 07:04:53,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:04:53,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190379231] [2024-12-02 07:04:53,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:04:53,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:04:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:04:53,877 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-12-02 07:04:53,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:04:53,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190379231] [2024-12-02 07:04:53,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190379231] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:04:53,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940483512] [2024-12-02 07:04:53,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:04:53,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:04:53,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:04:53,879 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:04:53,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 07:04:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:04:54,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:04:54,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:04:54,239 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-12-02 07:04:54,240 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:04:54,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940483512] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:04:54,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:04:54,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-12-02 07:04:54,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452187370] [2024-12-02 07:04:54,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:04:54,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:04:54,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:04:54,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:04:54,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:04:54,241 INFO L87 Difference]: Start difference. First operand 156 states and 228 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-12-02 07:04:54,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:04:54,266 INFO L93 Difference]: Finished difference Result 312 states and 457 transitions. [2024-12-02 07:04:54,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:04:54,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 153 [2024-12-02 07:04:54,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:04:54,268 INFO L225 Difference]: With dead ends: 312 [2024-12-02 07:04:54,268 INFO L226 Difference]: Without dead ends: 159 [2024-12-02 07:04:54,268 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:04:54,269 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 1 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:04:54,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 649 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:04:54,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-12-02 07:04:54,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2024-12-02 07:04:54,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 139 states have (on average 1.410071942446043) internal successors, (196), 139 states have internal predecessors, (196), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 07:04:54,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 230 transitions. [2024-12-02 07:04:54,278 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 230 transitions. Word has length 153 [2024-12-02 07:04:54,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:04:54,278 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 230 transitions. [2024-12-02 07:04:54,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-12-02 07:04:54,279 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 230 transitions. [2024-12-02 07:04:54,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 07:04:54,280 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:04:54,281 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:04:54,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 07:04:54,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:04:54,481 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:04:54,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:04:54,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1952544331, now seen corresponding path program 1 times [2024-12-02 07:04:54,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:04:54,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475962783] [2024-12-02 07:04:54,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:04:54,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:04:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:04:54,725 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-12-02 07:04:54,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:04:54,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475962783] [2024-12-02 07:04:54,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475962783] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:04:54,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576654884] [2024-12-02 07:04:54,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:04:54,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:04:54,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:04:54,728 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:04:54,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 07:04:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:04:55,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:04:55,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:04:55,096 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-12-02 07:04:55,096 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:04:55,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576654884] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:04:55,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:04:55,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2024-12-02 07:04:55,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815156883] [2024-12-02 07:04:55,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:04:55,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:04:55,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:04:55,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:04:55,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:04:55,098 INFO L87 Difference]: Start difference. First operand 158 states and 230 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-12-02 07:04:55,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:04:55,128 INFO L93 Difference]: Finished difference Result 315 states and 460 transitions. [2024-12-02 07:04:55,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:04:55,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 153 [2024-12-02 07:04:55,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:04:55,130 INFO L225 Difference]: With dead ends: 315 [2024-12-02 07:04:55,130 INFO L226 Difference]: Without dead ends: 160 [2024-12-02 07:04:55,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:04:55,132 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:04:55,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 649 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:04:55,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-12-02 07:04:55,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-12-02 07:04:55,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 141 states have (on average 1.4042553191489362) internal successors, (198), 141 states have internal predecessors, (198), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 07:04:55,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 232 transitions. [2024-12-02 07:04:55,140 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 232 transitions. Word has length 153 [2024-12-02 07:04:55,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:04:55,141 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 232 transitions. [2024-12-02 07:04:55,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-12-02 07:04:55,141 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 232 transitions. [2024-12-02 07:04:55,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 07:04:55,143 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:04:55,143 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:04:55,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 07:04:55,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef1e7815-dcec-4527-b3b0-785a72078616/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-02 07:04:55,344 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:04:55,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:04:55,345 INFO L85 PathProgramCache]: Analyzing trace with hash -616592, now seen corresponding path program 1 times [2024-12-02 07:04:55,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:04:55,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109534106] [2024-12-02 07:04:55,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:04:55,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:04:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:04:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-12-02 07:04:55,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:04:55,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109534106] [2024-12-02 07:04:55,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109534106] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:04:55,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:04:55,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:04:55,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414954428] [2024-12-02 07:04:55,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:04:55,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:04:55,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:04:55,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:04:55,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:04:55,910 INFO L87 Difference]: Start difference. First operand 160 states and 232 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-12-02 07:04:55,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:04:55,989 INFO L93 Difference]: Finished difference Result 321 states and 468 transitions. [2024-12-02 07:04:55,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:04:55,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 155 [2024-12-02 07:04:55,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:04:55,991 INFO L225 Difference]: With dead ends: 321 [2024-12-02 07:04:55,991 INFO L226 Difference]: Without dead ends: 164 [2024-12-02 07:04:55,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:04:55,992 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 2 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:04:55,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 636 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:04:55,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-12-02 07:04:55,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2024-12-02 07:04:55,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 144 states have (on average 1.4027777777777777) internal successors, (202), 144 states have internal predecessors, (202), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 07:04:56,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 236 transitions. [2024-12-02 07:04:56,000 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 236 transitions. Word has length 155 [2024-12-02 07:04:56,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:04:56,001 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 236 transitions. [2024-12-02 07:04:56,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-12-02 07:04:56,001 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 236 transitions. [2024-12-02 07:04:56,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 07:04:56,003 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:04:56,003 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:04:56,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 07:04:56,003 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:04:56,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:04:56,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1806054926, now seen corresponding path program 1 times [2024-12-02 07:04:56,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:04:56,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804146922] [2024-12-02 07:04:56,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:04:56,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:04:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat