./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.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_1d616a57-4bd7-4982-8370-00df032aa792/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d616a57-4bd7-4982-8370-00df032aa792/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_1d616a57-4bd7-4982-8370-00df032aa792/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d616a57-4bd7-4982-8370-00df032aa792/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d616a57-4bd7-4982-8370-00df032aa792/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_1d616a57-4bd7-4982-8370-00df032aa792/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 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:13:34,635 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:13:34,754 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d616a57-4bd7-4982-8370-00df032aa792/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 02:13:34,763 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:13:34,763 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:13:34,804 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:13:34,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:13:34,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:13:34,807 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:13:34,807 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:13:34,809 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:13:34,809 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:13:34,810 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:13:34,810 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:13:34,810 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:13:34,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:13:34,810 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:13:34,810 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:13:34,811 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:13:34,812 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:13:34,812 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:13:34,812 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:13:34,813 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:13:34,813 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:13:34,813 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 02:13:34,813 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:13:34,813 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:13:34,813 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:13:34,814 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:13:34,814 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:13:34,814 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:13:34,814 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:13:34,814 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:13:34,814 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:13:34,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:13:34,815 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:13:34,815 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:13:34,815 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:13:34,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:13:34,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:13:34,815 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:13:34,815 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:13:34,815 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:13:34,815 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:13:34,816 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:13:34,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:13:34,817 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:13:34,817 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:13:34,818 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:13:34,818 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:13:34,818 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_1d616a57-4bd7-4982-8370-00df032aa792/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 -> 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 [2024-11-28 02:13:35,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:13:35,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:13:35,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:13:35,230 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:13:35,230 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:13:35,232 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d616a57-4bd7-4982-8370-00df032aa792/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2024-11-28 02:13:39,050 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d616a57-4bd7-4982-8370-00df032aa792/bin/uautomizer-verify-aQ6SnzHsRB/data/5194ee9af/e3bc825fc7194cffb32aff86f1d28fea/FLAG6b5544821 [2024-11-28 02:13:39,534 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:13:39,535 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d616a57-4bd7-4982-8370-00df032aa792/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2024-11-28 02:13:39,553 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d616a57-4bd7-4982-8370-00df032aa792/bin/uautomizer-verify-aQ6SnzHsRB/data/5194ee9af/e3bc825fc7194cffb32aff86f1d28fea/FLAG6b5544821 [2024-11-28 02:13:39,640 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d616a57-4bd7-4982-8370-00df032aa792/bin/uautomizer-verify-aQ6SnzHsRB/data/5194ee9af/e3bc825fc7194cffb32aff86f1d28fea [2024-11-28 02:13:39,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:13:39,644 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:13:39,648 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:13:39,649 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:13:39,655 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:13:39,658 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:13:39" (1/1) ... [2024-11-28 02:13:39,659 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e4ea52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:13:39, skipping insertion in model container [2024-11-28 02:13:39,659 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:13:39" (1/1) ... [2024-11-28 02:13:39,723 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:13:40,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:13:40,209 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:13:40,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:13:40,329 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:13:40,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:13:40 WrapperNode [2024-11-28 02:13:40,332 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:13:40,333 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:13:40,335 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:13:40,335 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:13:40,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:13:40" (1/1) ... [2024-11-28 02:13:40,367 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:13:40" (1/1) ... [2024-11-28 02:13:40,388 INFO L138 Inliner]: procedures = 170, calls = 38, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2024-11-28 02:13:40,388 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:13:40,389 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:13:40,389 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:13:40,389 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:13:40,400 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:13:40" (1/1) ... [2024-11-28 02:13:40,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:13:40" (1/1) ... [2024-11-28 02:13:40,404 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:13:40" (1/1) ... [2024-11-28 02:13:40,419 INFO L175 MemorySlicer]: Split 18 memory accesses to 4 slices as follows [2, 5, 6, 5]. 33 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 1, 5]. The 2 writes are split as follows [0, 0, 2, 0]. [2024-11-28 02:13:40,420 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:13:40" (1/1) ... [2024-11-28 02:13:40,420 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:13:40" (1/1) ... [2024-11-28 02:13:40,428 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:13:40" (1/1) ... [2024-11-28 02:13:40,429 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:13:40" (1/1) ... [2024-11-28 02:13:40,434 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:13:40" (1/1) ... [2024-11-28 02:13:40,436 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:13:40" (1/1) ... [2024-11-28 02:13:40,437 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:13:40" (1/1) ... [2024-11-28 02:13:40,441 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:13:40,442 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:13:40,442 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:13:40,442 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:13:40,444 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:13:40" (1/1) ... [2024-11-28 02:13:40,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:13:40,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d616a57-4bd7-4982-8370-00df032aa792/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:13:40,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d616a57-4bd7-4982-8370-00df032aa792/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:13:40,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d616a57-4bd7-4982-8370-00df032aa792/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:13:40,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:13:40,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:13:40,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:13:40,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 02:13:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:13:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:13:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:13:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 02:13:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 02:13:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:13:40,531 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-28 02:13:40,532 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-28 02:13:40,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:13:40,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:13:40,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:13:40,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:13:40,532 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 02:13:40,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:13:40,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:13:40,535 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 02:13:40,719 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:13:40,721 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:13:41,054 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:13:41,054 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:13:41,323 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:13:41,323 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-28 02:13:41,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:13:41 BoogieIcfgContainer [2024-11-28 02:13:41,324 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:13:41,326 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:13:41,326 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:13:41,332 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:13:41,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:13:39" (1/3) ... [2024-11-28 02:13:41,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b4d838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:13:41, skipping insertion in model container [2024-11-28 02:13:41,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:13:40" (2/3) ... [2024-11-28 02:13:41,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b4d838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:13:41, skipping insertion in model container [2024-11-28 02:13:41,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:13:41" (3/3) ... [2024-11-28 02:13:41,338 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2024-11-28 02:13:41,360 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:13:41,362 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_22-deref_read_racefree.i that has 2 procedures, 44 locations, 1 initial locations, 5 loop locations, and 6 error locations. [2024-11-28 02:13:41,362 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:13:41,428 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:13:41,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 52 transitions, 108 flow [2024-11-28 02:13:41,543 INFO L124 PetriNetUnfolderBase]: 10/65 cut-off events. [2024-11-28 02:13:41,546 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:13:41,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 65 events. 10/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 196 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2024-11-28 02:13:41,551 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 52 transitions, 108 flow [2024-11-28 02:13:41,556 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 52 transitions, 108 flow [2024-11-28 02:13:41,566 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:13:41,581 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;@465c711b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:13:41,582 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-28 02:13:41,589 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:13:41,589 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-11-28 02:13:41,589 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:13:41,590 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:13:41,591 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:13:41,591 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-28 02:13:41,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:41,598 INFO L85 PathProgramCache]: Analyzing trace with hash 337413108, now seen corresponding path program 1 times [2024-11-28 02:13:41,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:41,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328963400] [2024-11-28 02:13:41,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:41,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:41,988 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 02:13:41,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:41,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328963400] [2024-11-28 02:13:41,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328963400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:41,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:41,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:13:41,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495713611] [2024-11-28 02:13:41,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:42,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:13:42,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:42,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:13:42,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:13:42,061 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-11-28 02:13:42,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 52 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:13:42,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:13:42,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-11-28 02:13:42,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:13:42,409 INFO L124 PetriNetUnfolderBase]: 121/364 cut-off events. [2024-11-28 02:13:42,410 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:13:42,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 643 conditions, 364 events. 121/364 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1773 event pairs, 22 based on Foata normal form. 72/402 useless extension candidates. Maximal degree in co-relation 612. Up to 169 conditions per place. [2024-11-28 02:13:42,415 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 38 selfloop transitions, 4 changer transitions 4/65 dead transitions. [2024-11-28 02:13:42,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 65 transitions, 226 flow [2024-11-28 02:13:42,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:13:42,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:13:42,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2024-11-28 02:13:42,432 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-28 02:13:42,434 INFO L175 Difference]: Start difference. First operand has 47 places, 52 transitions, 108 flow. Second operand 4 states and 143 transitions. [2024-11-28 02:13:42,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 65 transitions, 226 flow [2024-11-28 02:13:42,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 65 transitions, 226 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:13:42,448 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 98 flow [2024-11-28 02:13:42,451 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2024-11-28 02:13:42,460 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2024-11-28 02:13:42,460 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 98 flow [2024-11-28 02:13:42,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:13:42,461 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:13:42,461 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:13:42,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:13:42,462 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-28 02:13:42,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:42,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1869872098, now seen corresponding path program 1 times [2024-11-28 02:13:42,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:42,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823640264] [2024-11-28 02:13:42,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:42,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:42,590 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 02:13:42,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:42,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823640264] [2024-11-28 02:13:42,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823640264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:42,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:42,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:13:42,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993470486] [2024-11-28 02:13:42,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:42,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:13:42,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:42,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:13:42,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:13:42,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-11-28 02:13:42,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:13:42,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:13:42,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-11-28 02:13:42,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:13:42,878 INFO L124 PetriNetUnfolderBase]: 110/319 cut-off events. [2024-11-28 02:13:42,878 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-28 02:13:42,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 319 events. 110/319 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1515 event pairs, 0 based on Foata normal form. 13/326 useless extension candidates. Maximal degree in co-relation 581. Up to 208 conditions per place. [2024-11-28 02:13:42,882 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 43 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2024-11-28 02:13:42,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 65 transitions, 234 flow [2024-11-28 02:13:42,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:13:42,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:13:42,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-11-28 02:13:42,885 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2024-11-28 02:13:42,885 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 98 flow. Second operand 4 states and 124 transitions. [2024-11-28 02:13:42,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 65 transitions, 234 flow [2024-11-28 02:13:42,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 65 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:13:42,888 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 98 flow [2024-11-28 02:13:42,889 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-11-28 02:13:42,890 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2024-11-28 02:13:42,890 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 98 flow [2024-11-28 02:13:42,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:13:42,890 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:13:42,891 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:42,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:13:42,891 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-28 02:13:42,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:42,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1650767351, now seen corresponding path program 1 times [2024-11-28 02:13:42,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:42,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030168345] [2024-11-28 02:13:42,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:42,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:13:42,922 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:13:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:13:42,959 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:13:42,960 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:13:42,961 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-11-28 02:13:42,963 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-11-28 02:13:42,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-11-28 02:13:42,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-11-28 02:13:42,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2024-11-28 02:13:42,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2024-11-28 02:13:42,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2024-11-28 02:13:42,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-11-28 02:13:42,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-11-28 02:13:42,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-11-28 02:13:42,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-11-28 02:13:42,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:13:42,966 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-28 02:13:42,970 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:13:42,970 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 02:13:43,079 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:13:43,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 84 transitions, 178 flow [2024-11-28 02:13:43,110 INFO L124 PetriNetUnfolderBase]: 18/115 cut-off events. [2024-11-28 02:13:43,110 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:13:43,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 115 events. 18/115 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 409 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 80. Up to 6 conditions per place. [2024-11-28 02:13:43,113 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 84 transitions, 178 flow [2024-11-28 02:13:43,116 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 84 transitions, 178 flow [2024-11-28 02:13:43,118 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:13:43,120 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;@465c711b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:13:43,120 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-28 02:13:43,126 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:13:43,127 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-28 02:13:43,127 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:13:43,127 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:13:43,127 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:13:43,127 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:13:43,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:43,128 INFO L85 PathProgramCache]: Analyzing trace with hash 417604519, now seen corresponding path program 1 times [2024-11-28 02:13:43,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:43,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629372189] [2024-11-28 02:13:43,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:43,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:43,286 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 02:13:43,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:43,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629372189] [2024-11-28 02:13:43,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629372189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:43,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:43,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:13:43,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548313759] [2024-11-28 02:13:43,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:43,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:13:43,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:43,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:13:43,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:13:43,309 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 84 [2024-11-28 02:13:43,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 84 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 02:13:43,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:13:43,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 84 [2024-11-28 02:13:43,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:13:44,732 INFO L124 PetriNetUnfolderBase]: 3157/6383 cut-off events. [2024-11-28 02:13:44,732 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-11-28 02:13:44,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11463 conditions, 6383 events. 3157/6383 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 50235 event pairs, 657 based on Foata normal form. 1482/7360 useless extension candidates. Maximal degree in co-relation 8222. Up to 3025 conditions per place. [2024-11-28 02:13:44,798 INFO L140 encePairwiseOnDemand]: 65/84 looper letters, 76 selfloop transitions, 4 changer transitions 0/113 dead transitions. [2024-11-28 02:13:44,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 113 transitions, 396 flow [2024-11-28 02:13:44,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:13:44,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:13:44,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-11-28 02:13:44,802 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7470238095238095 [2024-11-28 02:13:44,803 INFO L175 Difference]: Start difference. First operand has 75 places, 84 transitions, 178 flow. Second operand 4 states and 251 transitions. [2024-11-28 02:13:44,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 113 transitions, 396 flow [2024-11-28 02:13:44,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 113 transitions, 396 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:13:44,810 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 156 flow [2024-11-28 02:13:44,811 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-11-28 02:13:44,812 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 2 predicate places. [2024-11-28 02:13:44,814 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 156 flow [2024-11-28 02:13:44,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 02:13:44,815 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:13:44,815 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:13:44,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:13:44,815 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:13:44,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:44,816 INFO L85 PathProgramCache]: Analyzing trace with hash 60838627, now seen corresponding path program 1 times [2024-11-28 02:13:44,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:44,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439056938] [2024-11-28 02:13:44,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:44,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:44,941 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 02:13:44,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:44,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439056938] [2024-11-28 02:13:44,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439056938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:44,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:44,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:13:44,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124210361] [2024-11-28 02:13:44,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:44,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:13:44,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:44,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:13:44,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:13:44,957 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 84 [2024-11-28 02:13:44,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 02:13:44,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:13:44,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 84 [2024-11-28 02:13:44,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:13:46,080 INFO L124 PetriNetUnfolderBase]: 3146/6834 cut-off events. [2024-11-28 02:13:46,081 INFO L125 PetriNetUnfolderBase]: For 455/455 co-relation queries the response was YES. [2024-11-28 02:13:46,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12354 conditions, 6834 events. 3146/6834 cut-off events. For 455/455 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 56463 event pairs, 1452 based on Foata normal form. 13/6545 useless extension candidates. Maximal degree in co-relation 999. Up to 4972 conditions per place. [2024-11-28 02:13:46,138 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 58 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2024-11-28 02:13:46,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 94 transitions, 332 flow [2024-11-28 02:13:46,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:13:46,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:13:46,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-11-28 02:13:46,142 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5803571428571429 [2024-11-28 02:13:46,146 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 156 flow. Second operand 4 states and 195 transitions. [2024-11-28 02:13:46,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 94 transitions, 332 flow [2024-11-28 02:13:46,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 94 transitions, 320 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:13:46,153 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 170 flow [2024-11-28 02:13:46,154 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2024-11-28 02:13:46,155 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2024-11-28 02:13:46,157 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 170 flow [2024-11-28 02:13:46,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 02:13:46,157 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:13:46,158 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:46,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:13:46,158 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:13:46,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:46,163 INFO L85 PathProgramCache]: Analyzing trace with hash 2109313883, now seen corresponding path program 1 times [2024-11-28 02:13:46,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:46,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411970825] [2024-11-28 02:13:46,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:46,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:46,399 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 02:13:46,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:46,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411970825] [2024-11-28 02:13:46,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411970825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:46,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:46,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:13:46,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049822147] [2024-11-28 02:13:46,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:46,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:13:46,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:46,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:13:46,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:13:46,414 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2024-11-28 02:13:46,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 02:13:46,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:13:46,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2024-11-28 02:13:46,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:13:47,526 INFO L124 PetriNetUnfolderBase]: 3033/6476 cut-off events. [2024-11-28 02:13:47,526 INFO L125 PetriNetUnfolderBase]: For 394/566 co-relation queries the response was YES. [2024-11-28 02:13:47,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11737 conditions, 6476 events. 3033/6476 cut-off events. For 394/566 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 51624 event pairs, 949 based on Foata normal form. 141/6280 useless extension candidates. Maximal degree in co-relation 11636. Up to 4227 conditions per place. [2024-11-28 02:13:47,579 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 82 selfloop transitions, 6 changer transitions 0/122 dead transitions. [2024-11-28 02:13:47,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 122 transitions, 476 flow [2024-11-28 02:13:47,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:13:47,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:13:47,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 259 transitions. [2024-11-28 02:13:47,582 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-11-28 02:13:47,583 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 170 flow. Second operand 5 states and 259 transitions. [2024-11-28 02:13:47,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 122 transitions, 476 flow [2024-11-28 02:13:47,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 122 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:13:47,589 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 212 flow [2024-11-28 02:13:47,590 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2024-11-28 02:13:47,591 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 10 predicate places. [2024-11-28 02:13:47,592 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 212 flow [2024-11-28 02:13:47,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 02:13:47,593 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:13:47,593 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-28 02:13:47,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:13:47,593 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:13:47,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:47,594 INFO L85 PathProgramCache]: Analyzing trace with hash -917165515, now seen corresponding path program 1 times [2024-11-28 02:13:47,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:47,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300360949] [2024-11-28 02:13:47,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:47,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:47,679 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 02:13:47,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:47,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300360949] [2024-11-28 02:13:47,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300360949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:47,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:47,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:13:47,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806263772] [2024-11-28 02:13:47,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:47,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:13:47,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:47,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:13:47,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:13:47,694 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 84 [2024-11-28 02:13:47,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 02:13:47,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:13:47,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 84 [2024-11-28 02:13:47,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:13:48,771 INFO L124 PetriNetUnfolderBase]: 3039/5896 cut-off events. [2024-11-28 02:13:48,772 INFO L125 PetriNetUnfolderBase]: For 1030/1030 co-relation queries the response was YES. [2024-11-28 02:13:48,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12103 conditions, 5896 events. 3039/5896 cut-off events. For 1030/1030 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 44413 event pairs, 253 based on Foata normal form. 0/5793 useless extension candidates. Maximal degree in co-relation 11221. Up to 3633 conditions per place. [2024-11-28 02:13:48,814 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 91 selfloop transitions, 6 changer transitions 0/130 dead transitions. [2024-11-28 02:13:48,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 130 transitions, 558 flow [2024-11-28 02:13:48,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:13:48,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:13:48,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 213 transitions. [2024-11-28 02:13:48,816 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6339285714285714 [2024-11-28 02:13:48,816 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 212 flow. Second operand 4 states and 213 transitions. [2024-11-28 02:13:48,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 130 transitions, 558 flow [2024-11-28 02:13:48,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 130 transitions, 558 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:13:48,831 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 228 flow [2024-11-28 02:13:48,833 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2024-11-28 02:13:48,834 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 13 predicate places. [2024-11-28 02:13:48,836 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 228 flow [2024-11-28 02:13:48,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 02:13:48,836 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:13:48,836 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-11-28 02:13:48,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:13:48,837 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:13:48,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:48,838 INFO L85 PathProgramCache]: Analyzing trace with hash -927750615, now seen corresponding path program 1 times [2024-11-28 02:13:48,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:48,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832933225] [2024-11-28 02:13:48,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:48,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:13:48,871 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:13:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:13:48,904 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:13:48,908 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:13:48,908 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-11-28 02:13:48,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2024-11-28 02:13:48,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2024-11-28 02:13:48,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2024-11-28 02:13:48,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2024-11-28 02:13:48,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2024-11-28 02:13:48,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2024-11-28 02:13:48,912 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2024-11-28 02:13:48,912 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2024-11-28 02:13:48,912 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2024-11-28 02:13:48,912 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2024-11-28 02:13:48,912 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2024-11-28 02:13:48,912 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2024-11-28 02:13:48,913 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2024-11-28 02:13:48,913 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2024-11-28 02:13:48,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:13:48,913 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-28 02:13:48,914 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:13:48,914 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 02:13:48,969 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:13:48,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 116 transitions, 250 flow [2024-11-28 02:13:49,008 INFO L124 PetriNetUnfolderBase]: 26/165 cut-off events. [2024-11-28 02:13:49,008 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-28 02:13:49,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 165 events. 26/165 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 627 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 126. Up to 8 conditions per place. [2024-11-28 02:13:49,010 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 116 transitions, 250 flow [2024-11-28 02:13:49,013 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 116 transitions, 250 flow [2024-11-28 02:13:49,015 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:13:49,016 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;@465c711b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:13:49,018 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-28 02:13:49,022 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:13:49,022 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-28 02:13:49,022 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:13:49,023 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:13:49,023 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:13:49,023 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:13:49,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:49,024 INFO L85 PathProgramCache]: Analyzing trace with hash 528333690, now seen corresponding path program 1 times [2024-11-28 02:13:49,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:49,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574970757] [2024-11-28 02:13:49,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:49,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:49,123 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 02:13:49,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:49,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574970757] [2024-11-28 02:13:49,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574970757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:49,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:49,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:13:49,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672261065] [2024-11-28 02:13:49,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:49,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:13:49,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:49,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:13:49,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:13:49,140 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 116 [2024-11-28 02:13:49,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 116 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 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 02:13:49,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:13:49,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 116 [2024-11-28 02:13:49,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:13:59,401 INFO L124 PetriNetUnfolderBase]: 58597/97337 cut-off events. [2024-11-28 02:13:59,401 INFO L125 PetriNetUnfolderBase]: For 918/918 co-relation queries the response was YES. [2024-11-28 02:13:59,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179170 conditions, 97337 events. 58597/97337 cut-off events. For 918/918 co-relation queries the response was YES. Maximal size of possible extension queue 2293. Compared 915590 event pairs, 12897 based on Foata normal form. 25190/116270 useless extension candidates. Maximal degree in co-relation 123101. Up to 48385 conditions per place. [2024-11-28 02:14:00,002 INFO L140 encePairwiseOnDemand]: 91/116 looper letters, 110 selfloop transitions, 4 changer transitions 0/161 dead transitions. [2024-11-28 02:14:00,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 161 transitions, 568 flow [2024-11-28 02:14:00,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:14:00,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:14:00,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 359 transitions. [2024-11-28 02:14:00,004 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7737068965517241 [2024-11-28 02:14:00,004 INFO L175 Difference]: Start difference. First operand has 103 places, 116 transitions, 250 flow. Second operand 4 states and 359 transitions. [2024-11-28 02:14:00,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 161 transitions, 568 flow [2024-11-28 02:14:00,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 161 transitions, 566 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-28 02:14:00,012 INFO L231 Difference]: Finished difference. Result has 105 places, 95 transitions, 214 flow [2024-11-28 02:14:00,015 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=105, PETRI_TRANSITIONS=95} [2024-11-28 02:14:00,016 INFO L279 CegarLoopForPetriNet]: 103 programPoint places, 2 predicate places. [2024-11-28 02:14:00,017 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 95 transitions, 214 flow [2024-11-28 02:14:00,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 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 02:14:00,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:14:00,017 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:14:00,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:14:00,017 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:14:00,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:00,018 INFO L85 PathProgramCache]: Analyzing trace with hash -801524252, now seen corresponding path program 1 times [2024-11-28 02:14:00,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:00,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449582549] [2024-11-28 02:14:00,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:00,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:00,109 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 02:14:00,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:00,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449582549] [2024-11-28 02:14:00,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449582549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:00,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:14:00,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:14:00,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717218562] [2024-11-28 02:14:00,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:00,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:14:00,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:00,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:14:00,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:14:00,121 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 116 [2024-11-28 02:14:00,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 95 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 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 02:14:00,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:14:00,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 116 [2024-11-28 02:14:00,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:14:10,211 INFO L124 PetriNetUnfolderBase]: 58586/103326 cut-off events. [2024-11-28 02:14:10,212 INFO L125 PetriNetUnfolderBase]: For 6139/6139 co-relation queries the response was YES. [2024-11-28 02:14:10,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190639 conditions, 103326 events. 58586/103326 cut-off events. For 6139/6139 co-relation queries the response was YES. Maximal size of possible extension queue 2521. Compared 1025478 event pairs, 41644 based on Foata normal form. 13/98849 useless extension candidates. Maximal degree in co-relation 42699. Up to 81148 conditions per place. [2024-11-28 02:14:10,832 INFO L140 encePairwiseOnDemand]: 111/116 looper letters, 70 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2024-11-28 02:14:10,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 120 transitions, 414 flow [2024-11-28 02:14:10,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:14:10,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:14:10,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 263 transitions. [2024-11-28 02:14:10,835 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5668103448275862 [2024-11-28 02:14:10,835 INFO L175 Difference]: Start difference. First operand has 105 places, 95 transitions, 214 flow. Second operand 4 states and 263 transitions. [2024-11-28 02:14:10,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 120 transitions, 414 flow [2024-11-28 02:14:10,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 120 transitions, 402 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:14:10,845 INFO L231 Difference]: Finished difference. Result has 107 places, 97 transitions, 228 flow [2024-11-28 02:14:10,846 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=107, PETRI_TRANSITIONS=97} [2024-11-28 02:14:10,847 INFO L279 CegarLoopForPetriNet]: 103 programPoint places, 4 predicate places. [2024-11-28 02:14:10,847 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 97 transitions, 228 flow [2024-11-28 02:14:10,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 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 02:14:10,848 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:14:10,848 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:14:10,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:14:10,848 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:14:10,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:10,849 INFO L85 PathProgramCache]: Analyzing trace with hash 105098202, now seen corresponding path program 1 times [2024-11-28 02:14:10,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:10,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597045436] [2024-11-28 02:14:10,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:10,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:10,967 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 02:14:10,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:10,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597045436] [2024-11-28 02:14:10,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597045436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:10,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:14:10,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:14:10,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401604513] [2024-11-28 02:14:10,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:10,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:14:10,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:10,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:14:10,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:14:10,984 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 116 [2024-11-28 02:14:10,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 97 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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 02:14:10,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:14:10,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 116 [2024-11-28 02:14:10,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:14:21,308 INFO L124 PetriNetUnfolderBase]: 59409/103310 cut-off events. [2024-11-28 02:14:21,308 INFO L125 PetriNetUnfolderBase]: For 5131/7390 co-relation queries the response was YES. [2024-11-28 02:14:21,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190814 conditions, 103310 events. 59409/103310 cut-off events. For 5131/7390 co-relation queries the response was YES. Maximal size of possible extension queue 2595. Compared 1009140 event pairs, 23553 based on Foata normal form. 1581/99850 useless extension candidates. Maximal degree in co-relation 190712. Up to 76131 conditions per place. [2024-11-28 02:14:21,826 INFO L140 encePairwiseOnDemand]: 109/116 looper letters, 118 selfloop transitions, 8 changer transitions 0/174 dead transitions. [2024-11-28 02:14:21,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 174 transitions, 677 flow [2024-11-28 02:14:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:14:21,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:14:21,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 367 transitions. [2024-11-28 02:14:21,828 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6327586206896552 [2024-11-28 02:14:21,828 INFO L175 Difference]: Start difference. First operand has 107 places, 97 transitions, 228 flow. Second operand 5 states and 367 transitions. [2024-11-28 02:14:21,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 174 transitions, 677 flow [2024-11-28 02:14:21,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 174 transitions, 673 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:14:21,835 INFO L231 Difference]: Finished difference. Result has 113 places, 104 transitions, 287 flow [2024-11-28 02:14:21,835 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=287, PETRI_PLACES=113, PETRI_TRANSITIONS=104} [2024-11-28 02:14:21,836 INFO L279 CegarLoopForPetriNet]: 103 programPoint places, 10 predicate places. [2024-11-28 02:14:21,836 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 104 transitions, 287 flow [2024-11-28 02:14:21,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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 02:14:21,837 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:14:21,837 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-28 02:14:21,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:14:21,837 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:14:21,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:21,838 INFO L85 PathProgramCache]: Analyzing trace with hash -327304503, now seen corresponding path program 1 times [2024-11-28 02:14:21,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:21,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93396372] [2024-11-28 02:14:21,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:21,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:21,903 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 02:14:21,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:21,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93396372] [2024-11-28 02:14:21,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93396372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:21,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:14:21,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:14:21,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717559956] [2024-11-28 02:14:21,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:21,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:14:21,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:21,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:14:21,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:14:21,914 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 116 [2024-11-28 02:14:21,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 104 transitions, 287 flow. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 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 02:14:21,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:14:21,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 116 [2024-11-28 02:14:21,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:14:31,916 INFO L124 PetriNetUnfolderBase]: 60225/97201 cut-off events. [2024-11-28 02:14:31,917 INFO L125 PetriNetUnfolderBase]: For 21134/21134 co-relation queries the response was YES. [2024-11-28 02:14:32,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202825 conditions, 97201 events. 60225/97201 cut-off events. For 21134/21134 co-relation queries the response was YES. Maximal size of possible extension queue 2388. Compared 893929 event pairs, 8573 based on Foata normal form. 0/95831 useless extension candidates. Maximal degree in co-relation 176522. Up to 62449 conditions per place. [2024-11-28 02:14:32,485 INFO L140 encePairwiseOnDemand]: 111/116 looper letters, 131 selfloop transitions, 6 changer transitions 0/184 dead transitions. [2024-11-28 02:14:32,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 184 transitions, 791 flow [2024-11-28 02:14:32,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:14:32,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:14:32,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 303 transitions. [2024-11-28 02:14:32,488 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6530172413793104 [2024-11-28 02:14:32,488 INFO L175 Difference]: Start difference. First operand has 113 places, 104 transitions, 287 flow. Second operand 4 states and 303 transitions. [2024-11-28 02:14:32,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 184 transitions, 791 flow [2024-11-28 02:14:32,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 184 transitions, 791 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:14:32,510 INFO L231 Difference]: Finished difference. Result has 116 places, 104 transitions, 303 flow [2024-11-28 02:14:32,510 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=303, PETRI_PLACES=116, PETRI_TRANSITIONS=104} [2024-11-28 02:14:32,511 INFO L279 CegarLoopForPetriNet]: 103 programPoint places, 13 predicate places. [2024-11-28 02:14:32,511 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 104 transitions, 303 flow [2024-11-28 02:14:32,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 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 02:14:32,511 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:14:32,511 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:14:32,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:14:32,512 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 02:14:32,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:32,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1751848257, now seen corresponding path program 1 times [2024-11-28 02:14:32,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:32,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900690616] [2024-11-28 02:14:32,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:32,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:32,651 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 02:14:32,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:32,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900690616] [2024-11-28 02:14:32,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900690616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:32,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:14:32,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:14:32,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850980289] [2024-11-28 02:14:32,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:32,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:14:32,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:32,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:14:32,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:14:32,662 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 116 [2024-11-28 02:14:32,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 104 transitions, 303 flow. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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 02:14:32,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:14:32,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 116 [2024-11-28 02:14:32,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand