./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_46-escape_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_46-escape_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b71c523f20411078d17c9943b891d34ddfc00131917c4009fb579cdffacef23c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:25:55,974 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:25:56,091 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 04:25:56,102 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:25:56,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:25:56,153 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:25:56,154 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:25:56,154 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:25:56,155 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:25:56,155 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:25:56,156 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:25:56,156 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:25:56,156 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:25:56,157 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:25:56,157 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:25:56,159 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:25:56,159 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:25:56,159 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:25:56,160 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:25:56,160 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:25:56,160 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:25:56,160 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:25:56,160 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:25:56,160 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:25:56,160 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 04:25:56,161 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:25:56,161 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:25:56,161 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:25:56,161 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:25:56,161 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:25:56,161 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:25:56,161 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:25:56,161 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:25:56,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:25:56,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:25:56,162 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:25:56,162 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:25:56,162 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:25:56,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:25:56,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:25:56,162 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:25:56,162 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:25:56,162 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:25:56,162 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:25:56,163 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:25:56,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:25:56,163 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:25:56,163 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:25:56,163 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:25:56,164 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:25:56,165 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_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB 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 ! overflow) ) 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 -> b71c523f20411078d17c9943b891d34ddfc00131917c4009fb579cdffacef23c [2024-11-28 04:25:56,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:25:56,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:25:56,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:25:56,575 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:25:56,575 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:25:56,578 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/04-mutex_46-escape_nr.i [2024-11-28 04:25:59,768 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/data/c99cada15/60ad34019ad945f2acc798fd9568f723/FLAG03eea6a31 [2024-11-28 04:26:00,241 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:26:00,242 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/sv-benchmarks/c/goblint-regression/04-mutex_46-escape_nr.i [2024-11-28 04:26:00,269 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/data/c99cada15/60ad34019ad945f2acc798fd9568f723/FLAG03eea6a31 [2024-11-28 04:26:00,292 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/data/c99cada15/60ad34019ad945f2acc798fd9568f723 [2024-11-28 04:26:00,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:26:00,299 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:26:00,301 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:26:00,302 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:26:00,311 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:26:00,312 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:26:00" (1/1) ... [2024-11-28 04:26:00,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a32f885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:00, skipping insertion in model container [2024-11-28 04:26:00,314 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:26:00" (1/1) ... [2024-11-28 04:26:00,376 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:26:00,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:26:00,906 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:26:00,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:26:01,043 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:26:01,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:01 WrapperNode [2024-11-28 04:26:01,045 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:26:01,046 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:26:01,046 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:26:01,047 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:26:01,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:01" (1/1) ... [2024-11-28 04:26:01,080 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:01" (1/1) ... [2024-11-28 04:26:01,123 INFO L138 Inliner]: procedures = 264, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 106 [2024-11-28 04:26:01,124 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:26:01,125 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:26:01,125 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:26:01,127 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:26:01,137 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:01" (1/1) ... [2024-11-28 04:26:01,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:01" (1/1) ... [2024-11-28 04:26:01,144 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:01" (1/1) ... [2024-11-28 04:26:01,175 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [5, 6]. 55 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [5, 1]. The 2 writes are split as follows [0, 2]. [2024-11-28 04:26:01,179 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:01" (1/1) ... [2024-11-28 04:26:01,179 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:01" (1/1) ... [2024-11-28 04:26:01,193 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:01" (1/1) ... [2024-11-28 04:26:01,195 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:01" (1/1) ... [2024-11-28 04:26:01,197 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:01" (1/1) ... [2024-11-28 04:26:01,205 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:01" (1/1) ... [2024-11-28 04:26:01,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:01" (1/1) ... [2024-11-28 04:26:01,212 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:26:01,213 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:26:01,213 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:26:01,213 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:26:01,218 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:01" (1/1) ... [2024-11-28 04:26:01,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:26:01,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:26:01,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:26:01,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:26:01,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:26:01,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:26:01,301 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 04:26:01,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:26:01,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:26:01,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:26:01,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:26:01,302 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 04:26:01,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:26:01,302 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-28 04:26:01,303 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-28 04:26:01,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:26:01,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:26:01,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:26:01,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:26:01,305 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 04:26:01,480 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:26:01,484 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:26:01,754 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:26:01,754 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:26:02,277 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:26:02,278 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 04:26:02,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:26:02 BoogieIcfgContainer [2024-11-28 04:26:02,279 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:26:02,283 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:26:02,284 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:26:02,291 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:26:02,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:26:00" (1/3) ... [2024-11-28 04:26:02,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64562196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:26:02, skipping insertion in model container [2024-11-28 04:26:02,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:26:01" (2/3) ... [2024-11-28 04:26:02,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64562196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:26:02, skipping insertion in model container [2024-11-28 04:26:02,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:26:02" (3/3) ... [2024-11-28 04:26:02,297 INFO L128 eAbstractionObserver]: Analyzing ICFG 04-mutex_46-escape_nr.i [2024-11-28 04:26:02,317 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:26:02,319 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 04-mutex_46-escape_nr.i that has 2 procedures, 26 locations, 1 initial locations, 0 loop locations, and 4 error locations. [2024-11-28 04:26:02,320 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:26:02,389 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-28 04:26:02,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 26 transitions, 59 flow [2024-11-28 04:26:02,499 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2024-11-28 04:26:02,503 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 04:26:02,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 25 events. 1/25 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 1. Up to 2 conditions per place. [2024-11-28 04:26:02,508 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 26 transitions, 59 flow [2024-11-28 04:26:02,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 21 transitions, 45 flow [2024-11-28 04:26:02,528 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:26:02,555 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;@1f58e44f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:26:02,555 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 04:26:02,570 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:26:02,570 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-28 04:26:02,570 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:26:02,571 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:26:02,571 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:02,572 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 04:26:02,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:02,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1717605375, now seen corresponding path program 1 times [2024-11-28 04:26:02,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:02,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308607846] [2024-11-28 04:26:02,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:02,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:03,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:03,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:03,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308607846] [2024-11-28 04:26:03,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308607846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:03,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:03,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:26:03,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137048607] [2024-11-28 04:26:03,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:03,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:26:03,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:03,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:26:03,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:26:03,486 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-11-28 04:26:03,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 45 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:03,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:26:03,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-11-28 04:26:03,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:26:03,757 INFO L124 PetriNetUnfolderBase]: 44/130 cut-off events. [2024-11-28 04:26:03,757 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:26:03,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 130 events. 44/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 470 event pairs, 16 based on Foata normal form. 7/124 useless extension candidates. Maximal degree in co-relation 231. Up to 43 conditions per place. [2024-11-28 04:26:03,762 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 20 selfloop transitions, 7 changer transitions 5/37 dead transitions. [2024-11-28 04:26:03,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 37 transitions, 141 flow [2024-11-28 04:26:03,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:26:03,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:26:03,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-11-28 04:26:03,781 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-11-28 04:26:03,783 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 45 flow. Second operand 6 states and 70 transitions. [2024-11-28 04:26:03,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 37 transitions, 141 flow [2024-11-28 04:26:03,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 37 transitions, 140 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:26:03,794 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 84 flow [2024-11-28 04:26:03,796 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2024-11-28 04:26:03,802 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2024-11-28 04:26:03,803 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 84 flow [2024-11-28 04:26:03,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:03,804 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:26:03,804 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:03,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:26:03,805 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 04:26:03,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:03,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1716986721, now seen corresponding path program 1 times [2024-11-28 04:26:03,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:03,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242984087] [2024-11-28 04:26:03,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:03,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:04,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:04,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:04,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242984087] [2024-11-28 04:26:04,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242984087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:04,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:04,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:26:04,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729348944] [2024-11-28 04:26:04,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:04,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:26:04,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:04,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:26:04,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:26:04,303 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-11-28 04:26:04,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 84 flow. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:04,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:26:04,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-11-28 04:26:04,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:26:04,579 INFO L124 PetriNetUnfolderBase]: 36/121 cut-off events. [2024-11-28 04:26:04,580 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-11-28 04:26:04,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 121 events. 36/121 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 460 event pairs, 7 based on Foata normal form. 6/127 useless extension candidates. Maximal degree in co-relation 266. Up to 37 conditions per place. [2024-11-28 04:26:04,582 INFO L140 encePairwiseOnDemand]: 17/26 looper letters, 21 selfloop transitions, 11 changer transitions 7/45 dead transitions. [2024-11-28 04:26:04,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 228 flow [2024-11-28 04:26:04,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:26:04,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 04:26:04,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-11-28 04:26:04,585 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3974358974358974 [2024-11-28 04:26:04,585 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 84 flow. Second operand 9 states and 93 transitions. [2024-11-28 04:26:04,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 228 flow [2024-11-28 04:26:04,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:26:04,589 INFO L231 Difference]: Finished difference. Result has 45 places, 29 transitions, 150 flow [2024-11-28 04:26:04,589 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=150, PETRI_PLACES=45, PETRI_TRANSITIONS=29} [2024-11-28 04:26:04,590 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 20 predicate places. [2024-11-28 04:26:04,591 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 29 transitions, 150 flow [2024-11-28 04:26:04,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:04,591 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:26:04,591 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:04,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:26:04,592 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 04:26:04,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:04,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1686980492, now seen corresponding path program 1 times [2024-11-28 04:26:04,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:04,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952726291] [2024-11-28 04:26:04,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:04,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:04,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:04,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:04,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952726291] [2024-11-28 04:26:04,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952726291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:04,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:04,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:26:04,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499825711] [2024-11-28 04:26:04,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:04,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:26:04,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:04,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:26:04,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:26:04,894 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-11-28 04:26:04,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 29 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:04,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:26:04,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-11-28 04:26:04,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:26:05,141 INFO L124 PetriNetUnfolderBase]: 24/92 cut-off events. [2024-11-28 04:26:05,141 INFO L125 PetriNetUnfolderBase]: For 127/129 co-relation queries the response was YES. [2024-11-28 04:26:05,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 92 events. 24/92 cut-off events. For 127/129 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 330 event pairs, 4 based on Foata normal form. 8/100 useless extension candidates. Maximal degree in co-relation 241. Up to 40 conditions per place. [2024-11-28 04:26:05,145 INFO L140 encePairwiseOnDemand]: 17/26 looper letters, 21 selfloop transitions, 10 changer transitions 1/38 dead transitions. [2024-11-28 04:26:05,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 38 transitions, 238 flow [2024-11-28 04:26:05,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:26:05,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 04:26:05,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-11-28 04:26:05,150 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3894230769230769 [2024-11-28 04:26:05,150 INFO L175 Difference]: Start difference. First operand has 45 places, 29 transitions, 150 flow. Second operand 8 states and 81 transitions. [2024-11-28 04:26:05,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 38 transitions, 238 flow [2024-11-28 04:26:05,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 38 transitions, 230 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 04:26:05,157 INFO L231 Difference]: Finished difference. Result has 48 places, 27 transitions, 148 flow [2024-11-28 04:26:05,160 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=148, PETRI_PLACES=48, PETRI_TRANSITIONS=27} [2024-11-28 04:26:05,161 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 23 predicate places. [2024-11-28 04:26:05,161 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 27 transitions, 148 flow [2024-11-28 04:26:05,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:05,161 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:26:05,161 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:05,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:26:05,162 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 04:26:05,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:05,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1706158788, now seen corresponding path program 1 times [2024-11-28 04:26:05,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:05,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442144466] [2024-11-28 04:26:05,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:05,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:05,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:05,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:05,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442144466] [2024-11-28 04:26:05,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442144466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:05,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:05,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:26:05,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624211858] [2024-11-28 04:26:05,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:05,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:26:05,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:05,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:26:05,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:26:05,347 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-11-28 04:26:05,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 27 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:05,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:26:05,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-11-28 04:26:05,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:26:05,519 INFO L124 PetriNetUnfolderBase]: 26/92 cut-off events. [2024-11-28 04:26:05,519 INFO L125 PetriNetUnfolderBase]: For 178/180 co-relation queries the response was YES. [2024-11-28 04:26:05,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 92 events. 26/92 cut-off events. For 178/180 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 294 event pairs, 11 based on Foata normal form. 9/101 useless extension candidates. Maximal degree in co-relation 255. Up to 39 conditions per place. [2024-11-28 04:26:05,522 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 20 selfloop transitions, 7 changer transitions 2/34 dead transitions. [2024-11-28 04:26:05,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 34 transitions, 230 flow [2024-11-28 04:26:05,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:26:05,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:26:05,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2024-11-28 04:26:05,527 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2024-11-28 04:26:05,527 INFO L175 Difference]: Start difference. First operand has 48 places, 27 transitions, 148 flow. Second operand 6 states and 66 transitions. [2024-11-28 04:26:05,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 34 transitions, 230 flow [2024-11-28 04:26:05,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 34 transitions, 199 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-11-28 04:26:05,534 INFO L231 Difference]: Finished difference. Result has 45 places, 25 transitions, 123 flow [2024-11-28 04:26:05,535 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=123, PETRI_PLACES=45, PETRI_TRANSITIONS=25} [2024-11-28 04:26:05,537 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 20 predicate places. [2024-11-28 04:26:05,538 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 25 transitions, 123 flow [2024-11-28 04:26:05,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:05,538 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:26:05,538 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:05,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:26:05,539 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 04:26:05,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:05,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1059734223, now seen corresponding path program 1 times [2024-11-28 04:26:05,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:05,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254516183] [2024-11-28 04:26:05,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:05,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:05,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:05,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:26:05,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:05,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254516183] [2024-11-28 04:26:05,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254516183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:05,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:05,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:26:05,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972419933] [2024-11-28 04:26:05,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:05,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:26:05,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:05,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:26:05,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:26:05,670 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 26 [2024-11-28 04:26:05,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 25 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:05,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:26:05,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 26 [2024-11-28 04:26:05,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:26:05,734 INFO L124 PetriNetUnfolderBase]: 12/57 cut-off events. [2024-11-28 04:26:05,734 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-11-28 04:26:05,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 57 events. 12/57 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 139 event pairs, 3 based on Foata normal form. 6/63 useless extension candidates. Maximal degree in co-relation 146. Up to 26 conditions per place. [2024-11-28 04:26:05,735 INFO L140 encePairwiseOnDemand]: 22/26 looper letters, 18 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2024-11-28 04:26:05,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 29 transitions, 181 flow [2024-11-28 04:26:05,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:26:05,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:26:05,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2024-11-28 04:26:05,737 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2024-11-28 04:26:05,737 INFO L175 Difference]: Start difference. First operand has 45 places, 25 transitions, 123 flow. Second operand 3 states and 43 transitions. [2024-11-28 04:26:05,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 29 transitions, 181 flow [2024-11-28 04:26:05,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 29 transitions, 163 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-28 04:26:05,743 INFO L231 Difference]: Finished difference. Result has 42 places, 25 transitions, 113 flow [2024-11-28 04:26:05,743 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=42, PETRI_TRANSITIONS=25} [2024-11-28 04:26:05,744 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 17 predicate places. [2024-11-28 04:26:05,744 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 25 transitions, 113 flow [2024-11-28 04:26:05,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:05,744 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:26:05,744 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:05,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:26:05,744 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 04:26:05,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:05,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1875612491, now seen corresponding path program 1 times [2024-11-28 04:26:05,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:05,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347643326] [2024-11-28 04:26:05,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:05,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:06,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:26:06,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:06,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347643326] [2024-11-28 04:26:06,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347643326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:06,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:06,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:26:06,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059699384] [2024-11-28 04:26:06,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:06,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:26:06,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:06,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:26:06,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:26:06,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-11-28 04:26:06,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 25 transitions, 113 flow. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:06,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:26:06,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-11-28 04:26:06,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:26:06,441 INFO L124 PetriNetUnfolderBase]: 14/56 cut-off events. [2024-11-28 04:26:06,442 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-28 04:26:06,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 56 events. 14/56 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 1 based on Foata normal form. 3/59 useless extension candidates. Maximal degree in co-relation 151. Up to 25 conditions per place. [2024-11-28 04:26:06,444 INFO L140 encePairwiseOnDemand]: 17/26 looper letters, 15 selfloop transitions, 13 changer transitions 0/30 dead transitions. [2024-11-28 04:26:06,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 30 transitions, 186 flow [2024-11-28 04:26:06,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:26:06,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 04:26:06,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 51 transitions. [2024-11-28 04:26:06,449 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.24519230769230768 [2024-11-28 04:26:06,449 INFO L175 Difference]: Start difference. First operand has 42 places, 25 transitions, 113 flow. Second operand 8 states and 51 transitions. [2024-11-28 04:26:06,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 30 transitions, 186 flow [2024-11-28 04:26:06,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 30 transitions, 172 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 04:26:06,454 INFO L231 Difference]: Finished difference. Result has 42 places, 25 transitions, 130 flow [2024-11-28 04:26:06,454 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=130, PETRI_PLACES=42, PETRI_TRANSITIONS=25} [2024-11-28 04:26:06,455 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 17 predicate places. [2024-11-28 04:26:06,455 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 25 transitions, 130 flow [2024-11-28 04:26:06,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:06,455 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:26:06,456 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:06,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:26:06,456 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 04:26:06,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:06,458 INFO L85 PathProgramCache]: Analyzing trace with hash 599472258, now seen corresponding path program 1 times [2024-11-28 04:26:06,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:06,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235007874] [2024-11-28 04:26:06,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:06,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:06,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:06,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:06,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235007874] [2024-11-28 04:26:06,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235007874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:26:06,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839383193] [2024-11-28 04:26:06,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:06,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:06,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:26:06,882 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:26:06,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:26:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:07,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 04:26:07,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:26:07,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-28 04:26:07,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:26:07,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:07,314 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:26:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:07,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839383193] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:26:07,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:26:07,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 13 [2024-11-28 04:26:07,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166016390] [2024-11-28 04:26:07,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:07,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:26:07,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:07,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:26:07,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:26:07,682 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2024-11-28 04:26:07,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 25 transitions, 130 flow. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:07,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:26:07,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2024-11-28 04:26:07,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:26:08,106 INFO L124 PetriNetUnfolderBase]: 12/61 cut-off events. [2024-11-28 04:26:08,106 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-11-28 04:26:08,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 61 events. 12/61 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 164 event pairs, 3 based on Foata normal form. 1/62 useless extension candidates. Maximal degree in co-relation 164. Up to 28 conditions per place. [2024-11-28 04:26:08,107 INFO L140 encePairwiseOnDemand]: 17/26 looper letters, 17 selfloop transitions, 9 changer transitions 6/35 dead transitions. [2024-11-28 04:26:08,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 35 transitions, 230 flow [2024-11-28 04:26:08,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:26:08,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 04:26:08,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 72 transitions. [2024-11-28 04:26:08,109 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27692307692307694 [2024-11-28 04:26:08,109 INFO L175 Difference]: Start difference. First operand has 42 places, 25 transitions, 130 flow. Second operand 10 states and 72 transitions. [2024-11-28 04:26:08,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 35 transitions, 230 flow [2024-11-28 04:26:08,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 35 transitions, 219 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 04:26:08,112 INFO L231 Difference]: Finished difference. Result has 49 places, 24 transitions, 135 flow [2024-11-28 04:26:08,112 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=135, PETRI_PLACES=49, PETRI_TRANSITIONS=24} [2024-11-28 04:26:08,112 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 24 predicate places. [2024-11-28 04:26:08,112 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 24 transitions, 135 flow [2024-11-28 04:26:08,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:08,113 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:26:08,113 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:08,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:26:08,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:08,318 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 04:26:08,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:08,318 INFO L85 PathProgramCache]: Analyzing trace with hash -365426080, now seen corresponding path program 1 times [2024-11-28 04:26:08,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:08,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192423890] [2024-11-28 04:26:08,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:08,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:08,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:08,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:08,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192423890] [2024-11-28 04:26:08,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192423890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:26:08,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470549293] [2024-11-28 04:26:08,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:08,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:08,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:26:08,687 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:26:08,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:26:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:08,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 04:26:08,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:26:09,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-28 04:26:09,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:26:09,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:09,066 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:26:09,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:09,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470549293] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:26:09,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:26:09,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 13 [2024-11-28 04:26:09,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858876450] [2024-11-28 04:26:09,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:09,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:26:09,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:09,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:26:09,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:26:09,447 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2024-11-28 04:26:09,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 24 transitions, 135 flow. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:09,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:26:09,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2024-11-28 04:26:09,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:26:09,675 INFO L124 PetriNetUnfolderBase]: 11/50 cut-off events. [2024-11-28 04:26:09,675 INFO L125 PetriNetUnfolderBase]: For 85/87 co-relation queries the response was YES. [2024-11-28 04:26:09,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 50 events. 11/50 cut-off events. For 85/87 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 4 based on Foata normal form. 2/52 useless extension candidates. Maximal degree in co-relation 152. Up to 12 conditions per place. [2024-11-28 04:26:09,676 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 9 selfloop transitions, 5 changer transitions 11/28 dead transitions. [2024-11-28 04:26:09,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 28 transitions, 193 flow [2024-11-28 04:26:09,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:26:09,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 04:26:09,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 57 transitions. [2024-11-28 04:26:09,677 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27403846153846156 [2024-11-28 04:26:09,677 INFO L175 Difference]: Start difference. First operand has 49 places, 24 transitions, 135 flow. Second operand 8 states and 57 transitions. [2024-11-28 04:26:09,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 28 transitions, 193 flow [2024-11-28 04:26:09,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 28 transitions, 169 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-11-28 04:26:09,680 INFO L231 Difference]: Finished difference. Result has 42 places, 17 transitions, 86 flow [2024-11-28 04:26:09,680 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=86, PETRI_PLACES=42, PETRI_TRANSITIONS=17} [2024-11-28 04:26:09,681 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 17 predicate places. [2024-11-28 04:26:09,681 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 17 transitions, 86 flow [2024-11-28 04:26:09,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:09,681 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:26:09,681 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:09,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:26:09,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:09,882 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 04:26:09,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:09,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1243769580, now seen corresponding path program 2 times [2024-11-28 04:26:09,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:09,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265002821] [2024-11-28 04:26:09,883 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:26:09,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:09,931 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:26:09,931 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:26:10,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:10,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:10,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265002821] [2024-11-28 04:26:10,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265002821] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:26:10,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726215790] [2024-11-28 04:26:10,320 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:26:10,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:10,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:26:10,324 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:26:10,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:26:10,528 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:26:10,528 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:26:10,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 04:26:10,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:26:10,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-28 04:26:10,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:26:10,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:10,878 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:26:11,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:11,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726215790] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:26:11,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:26:11,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 17 [2024-11-28 04:26:11,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630437017] [2024-11-28 04:26:11,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:11,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:26:11,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:11,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:26:11,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:26:11,155 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2024-11-28 04:26:11,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 17 transitions, 86 flow. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:11,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:26:11,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2024-11-28 04:26:11,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:26:11,422 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2024-11-28 04:26:11,422 INFO L125 PetriNetUnfolderBase]: For 39/41 co-relation queries the response was YES. [2024-11-28 04:26:11,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 24 events. 1/24 cut-off events. For 39/41 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 1 based on Foata normal form. 3/27 useless extension candidates. Maximal degree in co-relation 62. Up to 9 conditions per place. [2024-11-28 04:26:11,423 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 7 selfloop transitions, 5 changer transitions 5/20 dead transitions. [2024-11-28 04:26:11,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 20 transitions, 131 flow [2024-11-28 04:26:11,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:26:11,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 04:26:11,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 54 transitions. [2024-11-28 04:26:11,425 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.23076923076923078 [2024-11-28 04:26:11,426 INFO L175 Difference]: Start difference. First operand has 42 places, 17 transitions, 86 flow. Second operand 9 states and 54 transitions. [2024-11-28 04:26:11,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 20 transitions, 131 flow [2024-11-28 04:26:11,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 20 transitions, 93 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-11-28 04:26:11,428 INFO L231 Difference]: Finished difference. Result has 33 places, 15 transitions, 58 flow [2024-11-28 04:26:11,428 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=58, PETRI_PLACES=33, PETRI_TRANSITIONS=15} [2024-11-28 04:26:11,429 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2024-11-28 04:26:11,429 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 15 transitions, 58 flow [2024-11-28 04:26:11,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:11,429 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:26:11,429 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:11,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:26:11,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:11,636 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 04:26:11,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:11,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1889345194, now seen corresponding path program 3 times [2024-11-28 04:26:11,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:11,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799713824] [2024-11-28 04:26:11,636 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:26:11,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:11,671 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:26:11,671 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:26:11,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:11,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:11,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799713824] [2024-11-28 04:26:11,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799713824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:26:11,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913691677] [2024-11-28 04:26:11,934 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:26:11,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:11,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:26:11,937 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:26:11,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:26:12,107 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:26:12,107 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:26:12,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 04:26:12,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:26:12,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-28 04:26:12,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:26:12,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:12,438 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:26:12,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:12,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913691677] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:26:12,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:26:12,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2024-11-28 04:26:12,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538331004] [2024-11-28 04:26:12,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:12,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:26:12,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:12,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:26:12,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:26:12,708 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2024-11-28 04:26:12,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 15 transitions, 58 flow. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:12,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:26:12,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2024-11-28 04:26:12,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:26:12,916 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-28 04:26:12,916 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-28 04:26:12,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 16 events. 1/16 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 6 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 44. Up to 4 conditions per place. [2024-11-28 04:26:12,917 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 0 selfloop transitions, 0 changer transitions 15/15 dead transitions. [2024-11-28 04:26:12,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 15 transitions, 80 flow [2024-11-28 04:26:12,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:26:12,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 04:26:12,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 49 transitions. [2024-11-28 04:26:12,918 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2094017094017094 [2024-11-28 04:26:12,918 INFO L175 Difference]: Start difference. First operand has 33 places, 15 transitions, 58 flow. Second operand 9 states and 49 transitions. [2024-11-28 04:26:12,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 15 transitions, 80 flow [2024-11-28 04:26:12,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 15 transitions, 66 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-28 04:26:12,919 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2024-11-28 04:26:12,919 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2024-11-28 04:26:12,920 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2024-11-28 04:26:12,920 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2024-11-28 04:26:12,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:26:12,923 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2024-11-28 04:26:12,924 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2024-11-28 04:26:12,924 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-11-28 04:26:12,924 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2024-11-28 04:26:12,924 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2024-11-28 04:26:12,924 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2024-11-28 04:26:12,924 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2024-11-28 04:26:12,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:26:13,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:13,125 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:13,130 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 04:26:13,130 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 04:26:13,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:26:13 BasicIcfg [2024-11-28 04:26:13,138 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 04:26:13,139 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:26:13,139 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:26:13,139 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:26:13,140 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:26:02" (3/4) ... [2024-11-28 04:26:13,141 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 04:26:13,145 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-28 04:26:13,151 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 87 nodes and edges [2024-11-28 04:26:13,153 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-28 04:26:13,153 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 04:26:13,153 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-28 04:26:13,248 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 04:26:13,249 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 04:26:13,249 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:26:13,250 INFO L158 Benchmark]: Toolchain (without parser) took 12952.02ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 91.8MB in the beginning and 77.1MB in the end (delta: 14.7MB). Peak memory consumption was 37.4MB. Max. memory is 16.1GB. [2024-11-28 04:26:13,250 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 117.4MB. Free memory was 73.3MB in the beginning and 73.1MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:26:13,251 INFO L158 Benchmark]: CACSL2BoogieTranslator took 744.79ms. Allocated memory is still 117.4MB. Free memory was 91.5MB in the beginning and 63.7MB in the end (delta: 27.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 04:26:13,251 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.44ms. Allocated memory is still 117.4MB. Free memory was 63.7MB in the beginning and 61.7MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:26:13,252 INFO L158 Benchmark]: Boogie Preprocessor took 86.82ms. Allocated memory is still 117.4MB. Free memory was 61.7MB in the beginning and 59.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:26:13,252 INFO L158 Benchmark]: RCFGBuilder took 1066.91ms. Allocated memory is still 117.4MB. Free memory was 59.7MB in the beginning and 48.5MB in the end (delta: 11.3MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. [2024-11-28 04:26:13,253 INFO L158 Benchmark]: TraceAbstraction took 10855.53ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 47.9MB in the beginning and 82.9MB in the end (delta: -35.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:26:13,253 INFO L158 Benchmark]: Witness Printer took 110.25ms. Allocated memory is still 142.6MB. Free memory was 82.9MB in the beginning and 77.1MB in the end (delta: 5.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:26:13,255 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 117.4MB. Free memory was 73.3MB in the beginning and 73.1MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 744.79ms. Allocated memory is still 117.4MB. Free memory was 91.5MB in the beginning and 63.7MB in the end (delta: 27.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.44ms. Allocated memory is still 117.4MB. Free memory was 63.7MB in the beginning and 61.7MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 86.82ms. Allocated memory is still 117.4MB. Free memory was 61.7MB in the beginning and 59.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1066.91ms. Allocated memory is still 117.4MB. Free memory was 59.7MB in the beginning and 48.5MB in the end (delta: 11.3MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. * TraceAbstraction took 10855.53ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 47.9MB in the beginning and 82.9MB in the end (delta: -35.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 110.25ms. Allocated memory is still 142.6MB. Free memory was 82.9MB in the beginning and 77.1MB in the end (delta: 5.9MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 924]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 924]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 37 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.7s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 373 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 330 mSDsluCounter, 368 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 350 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1003 IncrementalHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 18 mSDtfsCounter, 1003 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 186 GetRequests, 66 SyntacticMatches, 10 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=150occurred in iteration=2, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 205 ConstructedInterpolants, 16 QuantifiedInterpolants, 2100 SizeOfPredicates, 44 NumberOfNonLiveVariables, 640 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 18 InterpolantComputations, 10 PerfectInterpolantSequences, 18/26 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 04:26:13,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2f941c-2b97-4670-b632-0230eecd582b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE