./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.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_a39d27b4-ecea-4e14-a8c0-9ce2f3434e41/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39d27b4-ecea-4e14-a8c0-9ce2f3434e41/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_a39d27b4-ecea-4e14-a8c0-9ce2f3434e41/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39d27b4-ecea-4e14-a8c0-9ce2f3434e41/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39d27b4-ecea-4e14-a8c0-9ce2f3434e41/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_a39d27b4-ecea-4e14-a8c0-9ce2f3434e41/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 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:02:20,944 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:02:21,026 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39d27b4-ecea-4e14-a8c0-9ce2f3434e41/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 04:02:21,035 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:02:21,035 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:02:21,080 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:02:21,082 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:02:21,082 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:02:21,083 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:02:21,083 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:02:21,084 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:02:21,084 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:02:21,084 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:02:21,084 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:02:21,085 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:02:21,085 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:02:21,085 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:02:21,085 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:02:21,085 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:02:21,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:02:21,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:02:21,085 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:02:21,085 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:02:21,085 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:02:21,086 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 04:02:21,086 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:02:21,086 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:02:21,086 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:02:21,086 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:02:21,088 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:02:21,088 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:02:21,088 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:02:21,088 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:02:21,089 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:02:21,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:02:21,089 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:02:21,089 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:02:21,089 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:02:21,089 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:02:21,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:02:21,089 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:02:21,089 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:02:21,089 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:02:21,089 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:02:21,090 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:02:21,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:02:21,090 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:02:21,090 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:02:21,090 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:02:21,090 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:02:21,090 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_a39d27b4-ecea-4e14-a8c0-9ce2f3434e41/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 -> 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 [2024-11-28 04:02:21,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:02:21,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:02:21,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:02:21,415 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:02:21,415 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:02:21,417 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39d27b4-ecea-4e14-a8c0-9ce2f3434e41/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2024-11-28 04:02:24,405 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39d27b4-ecea-4e14-a8c0-9ce2f3434e41/bin/uautomizer-verify-aQ6SnzHsRB/data/c91b6082b/054323193e9b45a29830f357f0cd112a/FLAGd2ad9e1de [2024-11-28 04:02:24,752 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:02:24,755 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39d27b4-ecea-4e14-a8c0-9ce2f3434e41/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2024-11-28 04:02:24,774 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39d27b4-ecea-4e14-a8c0-9ce2f3434e41/bin/uautomizer-verify-aQ6SnzHsRB/data/c91b6082b/054323193e9b45a29830f357f0cd112a/FLAGd2ad9e1de [2024-11-28 04:02:24,796 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39d27b4-ecea-4e14-a8c0-9ce2f3434e41/bin/uautomizer-verify-aQ6SnzHsRB/data/c91b6082b/054323193e9b45a29830f357f0cd112a [2024-11-28 04:02:24,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:02:24,801 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:02:24,803 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:02:24,804 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:02:24,811 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:02:24,812 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:02:24" (1/1) ... [2024-11-28 04:02:24,813 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2900b2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:24, skipping insertion in model container [2024-11-28 04:02:24,813 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:02:24" (1/1) ... [2024-11-28 04:02:24,860 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:02:25,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:02:25,276 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:02:25,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:02:25,360 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:02:25,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:25 WrapperNode [2024-11-28 04:02:25,361 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:02:25,362 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:02:25,362 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:02:25,363 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:02:25,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:25" (1/1) ... [2024-11-28 04:02:25,381 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:25" (1/1) ... [2024-11-28 04:02:25,404 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 176 [2024-11-28 04:02:25,405 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:02:25,406 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:02:25,406 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:02:25,406 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:02:25,416 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:25" (1/1) ... [2024-11-28 04:02:25,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:25" (1/1) ... [2024-11-28 04:02:25,419 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:25" (1/1) ... [2024-11-28 04:02:25,434 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 5, 3, 6]. 38 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0, 0]. The 5 writes are split as follows [0, 1, 2, 2]. [2024-11-28 04:02:25,435 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:25" (1/1) ... [2024-11-28 04:02:25,435 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:25" (1/1) ... [2024-11-28 04:02:25,441 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:25" (1/1) ... [2024-11-28 04:02:25,443 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:25" (1/1) ... [2024-11-28 04:02:25,446 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:25" (1/1) ... [2024-11-28 04:02:25,448 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:25" (1/1) ... [2024-11-28 04:02:25,449 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:25" (1/1) ... [2024-11-28 04:02:25,452 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:02:25,452 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:02:25,453 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:02:25,453 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:02:25,454 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:25" (1/1) ... [2024-11-28 04:02:25,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:02:25,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39d27b4-ecea-4e14-a8c0-9ce2f3434e41/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:25,487 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39d27b4-ecea-4e14-a8c0-9ce2f3434e41/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:02:25,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a39d27b4-ecea-4e14-a8c0-9ce2f3434e41/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:02:25,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:02:25,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:02:25,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:02:25,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:02:25,519 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-28 04:02:25,519 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-28 04:02:25,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:02:25,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:02:25,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:02:25,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 04:02:25,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 04:02:25,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:02:25,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:02:25,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:02:25,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:02:25,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:02:25,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:02:25,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:02:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 04:02:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:02:25,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:02:25,524 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 04:02:25,705 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:02:25,707 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:02:26,109 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:02:26,109 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:02:26,700 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:02:26,702 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 04:02:26,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:02:26 BoogieIcfgContainer [2024-11-28 04:02:26,702 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:02:26,705 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:02:26,705 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:02:26,713 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:02:26,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:02:24" (1/3) ... [2024-11-28 04:02:26,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f98752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:02:26, skipping insertion in model container [2024-11-28 04:02:26,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:25" (2/3) ... [2024-11-28 04:02:26,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f98752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:02:26, skipping insertion in model container [2024-11-28 04:02:26,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:02:26" (3/3) ... [2024-11-28 04:02:26,715 INFO L128 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2024-11-28 04:02:26,731 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:02:26,734 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 36_stack_cas_p0_vs_concur.i that has 2 procedures, 32 locations, 1 initial locations, 3 loop locations, and 10 error locations. [2024-11-28 04:02:26,735 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:02:26,816 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 04:02:26,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 36 transitions, 76 flow [2024-11-28 04:02:26,908 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-11-28 04:02:26,912 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:02:26,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 4/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 63 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-28 04:02:26,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 36 transitions, 76 flow [2024-11-28 04:02:26,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 36 transitions, 76 flow [2024-11-28 04:02:26,933 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:02:26,951 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;@7f3e9b4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:02:26,952 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-28 04:02:26,964 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:02:26,964 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-28 04:02:26,964 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:02:26,967 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:26,967 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:02:26,968 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 04:02:26,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:26,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1965377378, now seen corresponding path program 1 times [2024-11-28 04:02:26,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:26,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472960578] [2024-11-28 04:02:26,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:26,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:27,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:02:27,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:27,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472960578] [2024-11-28 04:02:27,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472960578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:27,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:27,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:02:27,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272273022] [2024-11-28 04:02:27,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:27,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:02:27,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:27,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:02:27,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:02:27,977 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-28 04:02:27,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 36 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:27,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:27,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-28 04:02:27,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:28,125 INFO L124 PetriNetUnfolderBase]: 36/110 cut-off events. [2024-11-28 04:02:28,125 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:02:28,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 110 events. 36/110 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 241 event pairs, 2 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 188. Up to 77 conditions per place. [2024-11-28 04:02:28,128 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 21 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2024-11-28 04:02:28,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 32 transitions, 114 flow [2024-11-28 04:02:28,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:02:28,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:02:28,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-11-28 04:02:28,146 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6018518518518519 [2024-11-28 04:02:28,148 INFO L175 Difference]: Start difference. First operand has 35 places, 36 transitions, 76 flow. Second operand 3 states and 65 transitions. [2024-11-28 04:02:28,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 32 transitions, 114 flow [2024-11-28 04:02:28,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 114 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:02:28,161 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 76 flow [2024-11-28 04:02:28,163 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2024-11-28 04:02:28,166 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2024-11-28 04:02:28,166 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 76 flow [2024-11-28 04:02:28,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:28,167 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:28,167 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 04:02:28,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:02:28,167 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-28 04:02:28,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:28,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1965352016, now seen corresponding path program 1 times [2024-11-28 04:02:28,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:28,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30572643] [2024-11-28 04:02:28,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:28,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:02:28,603 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:02:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:02:28,672 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:02:28,672 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:02:28,673 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-11-28 04:02:28,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2024-11-28 04:02:28,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2024-11-28 04:02:28,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2024-11-28 04:02:28,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2024-11-28 04:02:28,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2024-11-28 04:02:28,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2024-11-28 04:02:28,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2024-11-28 04:02:28,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2024-11-28 04:02:28,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2024-11-28 04:02:28,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2024-11-28 04:02:28,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2024-11-28 04:02:28,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2024-11-28 04:02:28,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2024-11-28 04:02:28,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2024-11-28 04:02:28,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2024-11-28 04:02:28,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2024-11-28 04:02:28,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2024-11-28 04:02:28,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2024-11-28 04:02:28,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2024-11-28 04:02:28,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2024-11-28 04:02:28,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:02:28,685 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 04:02:28,689 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 04:02:28,689 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 04:02:28,775 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 04:02:28,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 67 transitions, 144 flow [2024-11-28 04:02:28,822 INFO L124 PetriNetUnfolderBase]: 8/72 cut-off events. [2024-11-28 04:02:28,822 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 04:02:28,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 72 events. 8/72 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 199 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2024-11-28 04:02:28,824 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 67 transitions, 144 flow [2024-11-28 04:02:28,826 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 67 transitions, 144 flow [2024-11-28 04:02:28,828 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:02:28,828 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;@7f3e9b4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:02:28,828 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-11-28 04:02:28,834 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:02:28,834 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-28 04:02:28,834 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 04:02:28,835 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:28,835 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:02:28,835 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-28 04:02:28,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:28,835 INFO L85 PathProgramCache]: Analyzing trace with hash -346574846, now seen corresponding path program 1 times [2024-11-28 04:02:28,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:28,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771378004] [2024-11-28 04:02:28,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:28,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:29,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:02:29,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:29,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771378004] [2024-11-28 04:02:29,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771378004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:29,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:29,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:02:29,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29427826] [2024-11-28 04:02:29,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:29,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:02:29,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:29,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:02:29,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:02:29,268 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 67 [2024-11-28 04:02:29,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 67 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:29,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:29,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 67 [2024-11-28 04:02:29,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:29,850 INFO L124 PetriNetUnfolderBase]: 1282/2269 cut-off events. [2024-11-28 04:02:29,851 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-28 04:02:29,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4339 conditions, 2269 events. 1282/2269 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 11916 event pairs, 480 based on Foata normal form. 0/1808 useless extension candidates. Maximal degree in co-relation 3771. Up to 1985 conditions per place. [2024-11-28 04:02:29,875 INFO L140 encePairwiseOnDemand]: 45/67 looper letters, 39 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2024-11-28 04:02:29,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 217 flow [2024-11-28 04:02:29,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:02:29,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:02:29,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-11-28 04:02:29,878 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6019900497512438 [2024-11-28 04:02:29,879 INFO L175 Difference]: Start difference. First operand has 64 places, 67 transitions, 144 flow. Second operand 3 states and 121 transitions. [2024-11-28 04:02:29,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 217 flow [2024-11-28 04:02:29,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 59 transitions, 217 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:02:29,882 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 143 flow [2024-11-28 04:02:29,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2024-11-28 04:02:29,883 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, -8 predicate places. [2024-11-28 04:02:29,884 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 143 flow [2024-11-28 04:02:29,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:29,884 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:29,884 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:29,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:02:29,884 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-28 04:02:29,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:29,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1949046697, now seen corresponding path program 1 times [2024-11-28 04:02:29,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:29,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874471797] [2024-11-28 04:02:29,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:29,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:30,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:02:30,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:30,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874471797] [2024-11-28 04:02:30,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874471797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:30,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:30,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:02:30,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722159806] [2024-11-28 04:02:30,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:30,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:02:30,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:30,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:02:30,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:02:30,439 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 67 [2024-11-28 04:02:30,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:30,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:30,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 67 [2024-11-28 04:02:30,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:31,077 INFO L124 PetriNetUnfolderBase]: 1731/3138 cut-off events. [2024-11-28 04:02:31,077 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-11-28 04:02:31,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6473 conditions, 3138 events. 1731/3138 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 18014 event pairs, 300 based on Foata normal form. 60/2545 useless extension candidates. Maximal degree in co-relation 5716. Up to 2312 conditions per place. [2024-11-28 04:02:31,102 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 77 selfloop transitions, 9 changer transitions 0/101 dead transitions. [2024-11-28 04:02:31,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 101 transitions, 448 flow [2024-11-28 04:02:31,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:02:31,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:02:31,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-11-28 04:02:31,104 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44776119402985076 [2024-11-28 04:02:31,104 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 143 flow. Second operand 6 states and 180 transitions. [2024-11-28 04:02:31,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 101 transitions, 448 flow [2024-11-28 04:02:31,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 445 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:02:31,107 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 202 flow [2024-11-28 04:02:31,107 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2024-11-28 04:02:31,109 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, -1 predicate places. [2024-11-28 04:02:31,109 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 202 flow [2024-11-28 04:02:31,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:31,109 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:31,109 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-28 04:02:31,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:02:31,109 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-28 04:02:31,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:31,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1351417663, now seen corresponding path program 1 times [2024-11-28 04:02:31,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:31,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781971250] [2024-11-28 04:02:31,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:31,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:02:31,455 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:02:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:02:31,487 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:02:31,487 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:02:31,487 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2024-11-28 04:02:31,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2024-11-28 04:02:31,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2024-11-28 04:02:31,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2024-11-28 04:02:31,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2024-11-28 04:02:31,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2024-11-28 04:02:31,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2024-11-28 04:02:31,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2024-11-28 04:02:31,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2024-11-28 04:02:31,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2024-11-28 04:02:31,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2024-11-28 04:02:31,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2024-11-28 04:02:31,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2024-11-28 04:02:31,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2024-11-28 04:02:31,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2024-11-28 04:02:31,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2024-11-28 04:02:31,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2024-11-28 04:02:31,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2024-11-28 04:02:31,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2024-11-28 04:02:31,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2024-11-28 04:02:31,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2024-11-28 04:02:31,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2024-11-28 04:02:31,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2024-11-28 04:02:31,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2024-11-28 04:02:31,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2024-11-28 04:02:31,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2024-11-28 04:02:31,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2024-11-28 04:02:31,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2024-11-28 04:02:31,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2024-11-28 04:02:31,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2024-11-28 04:02:31,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2024-11-28 04:02:31,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:02:31,494 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-28 04:02:31,494 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 04:02:31,494 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 04:02:31,571 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 04:02:31,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 98 transitions, 214 flow [2024-11-28 04:02:31,592 INFO L124 PetriNetUnfolderBase]: 12/106 cut-off events. [2024-11-28 04:02:31,592 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-28 04:02:31,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 106 events. 12/106 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 369 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 93. Up to 4 conditions per place. [2024-11-28 04:02:31,594 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 98 transitions, 214 flow [2024-11-28 04:02:31,596 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 98 transitions, 214 flow [2024-11-28 04:02:31,598 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:02:31,599 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;@7f3e9b4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:02:31,599 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-11-28 04:02:31,606 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:02:31,606 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-28 04:02:31,606 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 04:02:31,606 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:31,606 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:02:31,606 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-28 04:02:31,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:31,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1741469724, now seen corresponding path program 1 times [2024-11-28 04:02:31,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:31,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285431576] [2024-11-28 04:02:31,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:31,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:31,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:02:31,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:31,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285431576] [2024-11-28 04:02:31,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285431576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:31,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:31,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:02:31,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487815037] [2024-11-28 04:02:31,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:31,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:02:31,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:31,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:02:31,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:02:31,973 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 98 [2024-11-28 04:02:31,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 98 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:31,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:31,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 98 [2024-11-28 04:02:31,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:37,080 INFO L124 PetriNetUnfolderBase]: 30591/44612 cut-off events. [2024-11-28 04:02:37,081 INFO L125 PetriNetUnfolderBase]: For 1424/1424 co-relation queries the response was YES. [2024-11-28 04:02:37,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87050 conditions, 44612 events. 30591/44612 cut-off events. For 1424/1424 co-relation queries the response was YES. Maximal size of possible extension queue 1099. Compared 290007 event pairs, 15869 based on Foata normal form. 0/34920 useless extension candidates. Maximal degree in co-relation 70785. Up to 41384 conditions per place. [2024-11-28 04:02:37,383 INFO L140 encePairwiseOnDemand]: 66/98 looper letters, 57 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2024-11-28 04:02:37,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 86 transitions, 324 flow [2024-11-28 04:02:37,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:02:37,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:02:37,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2024-11-28 04:02:37,385 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2024-11-28 04:02:37,385 INFO L175 Difference]: Start difference. First operand has 93 places, 98 transitions, 214 flow. Second operand 3 states and 177 transitions. [2024-11-28 04:02:37,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 86 transitions, 324 flow [2024-11-28 04:02:37,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 86 transitions, 320 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-28 04:02:37,393 INFO L231 Difference]: Finished difference. Result has 80 places, 79 transitions, 210 flow [2024-11-28 04:02:37,395 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=80, PETRI_TRANSITIONS=79} [2024-11-28 04:02:37,396 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, -13 predicate places. [2024-11-28 04:02:37,397 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 79 transitions, 210 flow [2024-11-28 04:02:37,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:37,397 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:37,397 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:37,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:02:37,398 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-28 04:02:37,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:37,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1484868427, now seen corresponding path program 1 times [2024-11-28 04:02:37,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:37,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078499688] [2024-11-28 04:02:37,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:37,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:38,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:02:38,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:38,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078499688] [2024-11-28 04:02:38,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078499688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:38,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:38,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:02:38,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184200270] [2024-11-28 04:02:38,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:38,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:02:38,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:38,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:02:38,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:02:38,197 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 98 [2024-11-28 04:02:38,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 79 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:38,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:38,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 98 [2024-11-28 04:02:38,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:43,614 INFO L124 PetriNetUnfolderBase]: 38256/56843 cut-off events. [2024-11-28 04:02:43,614 INFO L125 PetriNetUnfolderBase]: For 3107/3107 co-relation queries the response was YES. [2024-11-28 04:02:43,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120410 conditions, 56843 events. 38256/56843 cut-off events. For 3107/3107 co-relation queries the response was YES. Maximal size of possible extension queue 1463. Compared 400067 event pairs, 11699 based on Foata normal form. 807/44959 useless extension candidates. Maximal degree in co-relation 113761. Up to 47786 conditions per place. [2024-11-28 04:02:44,232 INFO L140 encePairwiseOnDemand]: 89/98 looper letters, 121 selfloop transitions, 12 changer transitions 0/156 dead transitions. [2024-11-28 04:02:44,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 156 transitions, 713 flow [2024-11-28 04:02:44,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:02:44,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:02:44,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 275 transitions. [2024-11-28 04:02:44,238 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.467687074829932 [2024-11-28 04:02:44,239 INFO L175 Difference]: Start difference. First operand has 80 places, 79 transitions, 210 flow. Second operand 6 states and 275 transitions. [2024-11-28 04:02:44,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 156 transitions, 713 flow [2024-11-28 04:02:44,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 156 transitions, 709 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:02:44,251 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 289 flow [2024-11-28 04:02:44,251 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=289, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2024-11-28 04:02:44,252 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, -6 predicate places. [2024-11-28 04:02:44,253 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 289 flow [2024-11-28 04:02:44,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:44,254 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:44,254 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:44,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:02:44,254 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-28 04:02:44,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:44,259 INFO L85 PathProgramCache]: Analyzing trace with hash 768198650, now seen corresponding path program 1 times [2024-11-28 04:02:44,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:44,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222442087] [2024-11-28 04:02:44,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:44,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:45,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:02:45,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:45,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222442087] [2024-11-28 04:02:45,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222442087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:45,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:45,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:02:45,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595006434] [2024-11-28 04:02:45,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:45,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:02:45,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:45,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:02:45,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:02:45,115 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 98 [2024-11-28 04:02:45,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 289 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:45,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:45,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 98 [2024-11-28 04:02:45,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:51,925 INFO L124 PetriNetUnfolderBase]: 44552/66835 cut-off events. [2024-11-28 04:02:51,925 INFO L125 PetriNetUnfolderBase]: For 18189/18387 co-relation queries the response was YES. [2024-11-28 04:02:52,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151492 conditions, 66835 events. 44552/66835 cut-off events. For 18189/18387 co-relation queries the response was YES. Maximal size of possible extension queue 1682. Compared 489679 event pairs, 18002 based on Foata normal form. 864/56064 useless extension candidates. Maximal degree in co-relation 142282. Up to 56613 conditions per place. [2024-11-28 04:02:52,338 INFO L140 encePairwiseOnDemand]: 89/98 looper letters, 127 selfloop transitions, 12 changer transitions 0/162 dead transitions. [2024-11-28 04:02:52,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 162 transitions, 808 flow [2024-11-28 04:02:52,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:02:52,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:02:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 273 transitions. [2024-11-28 04:02:52,341 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-28 04:02:52,341 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 289 flow. Second operand 6 states and 273 transitions. [2024-11-28 04:02:52,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 162 transitions, 808 flow [2024-11-28 04:02:52,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 162 transitions, 804 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:02:52,377 INFO L231 Difference]: Finished difference. Result has 94 places, 95 transitions, 376 flow [2024-11-28 04:02:52,377 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=376, PETRI_PLACES=94, PETRI_TRANSITIONS=95} [2024-11-28 04:02:52,378 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, 1 predicate places. [2024-11-28 04:02:52,380 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 95 transitions, 376 flow [2024-11-28 04:02:52,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:52,380 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:52,381 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-28 04:02:52,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:02:52,381 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-28 04:02:52,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:52,382 INFO L85 PathProgramCache]: Analyzing trace with hash -189581457, now seen corresponding path program 1 times [2024-11-28 04:02:52,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:52,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335724047] [2024-11-28 04:02:52,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:52,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:02:52,702 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:02:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:02:52,725 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:02:52,725 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:02:52,725 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2024-11-28 04:02:52,725 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2024-11-28 04:02:52,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2024-11-28 04:02:52,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2024-11-28 04:02:52,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2024-11-28 04:02:52,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2024-11-28 04:02:52,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2024-11-28 04:02:52,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2024-11-28 04:02:52,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2024-11-28 04:02:52,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2024-11-28 04:02:52,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2024-11-28 04:02:52,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2024-11-28 04:02:52,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2024-11-28 04:02:52,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2024-11-28 04:02:52,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2024-11-28 04:02:52,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2024-11-28 04:02:52,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2024-11-28 04:02:52,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2024-11-28 04:02:52,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2024-11-28 04:02:52,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2024-11-28 04:02:52,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2024-11-28 04:02:52,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2024-11-28 04:02:52,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 41 remaining) [2024-11-28 04:02:52,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 41 remaining) [2024-11-28 04:02:52,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 41 remaining) [2024-11-28 04:02:52,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2024-11-28 04:02:52,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2024-11-28 04:02:52,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2024-11-28 04:02:52,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2024-11-28 04:02:52,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2024-11-28 04:02:52,729 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2024-11-28 04:02:52,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2024-11-28 04:02:52,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2024-11-28 04:02:52,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2024-11-28 04:02:52,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2024-11-28 04:02:52,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2024-11-28 04:02:52,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2024-11-28 04:02:52,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2024-11-28 04:02:52,731 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2024-11-28 04:02:52,731 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2024-11-28 04:02:52,731 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2024-11-28 04:02:52,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:02:52,731 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-28 04:02:52,732 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 04:02:52,732 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-28 04:02:52,808 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 04:02:52,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 129 transitions, 286 flow [2024-11-28 04:02:52,828 INFO L124 PetriNetUnfolderBase]: 16/140 cut-off events. [2024-11-28 04:02:52,829 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-28 04:02:52,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 140 events. 16/140 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 542 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 123. Up to 5 conditions per place. [2024-11-28 04:02:52,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 129 transitions, 286 flow [2024-11-28 04:02:52,834 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 129 transitions, 286 flow [2024-11-28 04:02:52,835 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:02:52,835 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;@7f3e9b4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:02:52,835 INFO L334 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2024-11-28 04:02:52,839 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:02:52,839 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-28 04:02:52,839 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 04:02:52,840 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:52,840 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:02:52,840 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-28 04:02:52,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:52,841 INFO L85 PathProgramCache]: Analyzing trace with hash 2075719620, now seen corresponding path program 1 times [2024-11-28 04:02:52,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:52,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713664250] [2024-11-28 04:02:52,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:52,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:53,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:02:53,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:53,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713664250] [2024-11-28 04:02:53,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713664250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:53,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:53,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:02:53,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420628295] [2024-11-28 04:02:53,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:53,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:02:53,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:53,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:02:53,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:02:53,418 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 129 [2024-11-28 04:02:53,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 129 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:53,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:53,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 129 [2024-11-28 04:02:53,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand