./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 8d3b4a56bf20a7e5cb147a14169234a27b247cfdef3db9f4b8a4f4a17cd6fe47 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:13:13,160 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:13:13,232 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:13:13,239 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:13:13,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:13:13,269 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:13:13,270 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:13:13,270 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:13:13,271 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:13:13,271 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:13:13,272 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:13:13,272 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:13:13,273 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:13:13,273 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:13:13,273 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:13:13,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:13:13,274 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:13:13,275 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:13:13,275 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:13:13,275 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:13:13,276 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:13:13,276 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:13:13,276 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:13:13,277 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:13:13,277 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:13:13,277 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:13:13,278 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:13:13,278 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:13:13,278 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:13:13,278 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:13:13,279 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:13:13,279 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:13:13,279 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:13:13,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:13:13,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:13:13,280 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:13:13,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:13:13,281 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:13:13,281 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:13:13,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:13:13,282 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:13:13,283 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:13:13,283 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:13:13,283 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:13:13,283 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d3b4a56bf20a7e5cb147a14169234a27b247cfdef3db9f4b8a4f4a17cd6fe47 [2024-11-09 15:13:13,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:13:13,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:13:13,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:13:13,602 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:13:13,602 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:13:13,603 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2024-11-09 15:13:15,082 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:13:15,322 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:13:15,322 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2024-11-09 15:13:15,330 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05ca5d270/663a3a0d5d724c12b12414d0a0af2773/FLAG3e8a1747d [2024-11-09 15:13:15,699 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05ca5d270/663a3a0d5d724c12b12414d0a0af2773 [2024-11-09 15:13:15,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:13:15,702 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:13:15,704 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:13:15,704 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:13:15,710 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:13:15,711 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:13:15" (1/1) ... [2024-11-09 15:13:15,712 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@211212de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:15, skipping insertion in model container [2024-11-09 15:13:15,712 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:13:15" (1/1) ... [2024-11-09 15:13:15,747 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:13:15,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:13:15,978 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:13:16,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:13:16,024 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:13:16,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:16 WrapperNode [2024-11-09 15:13:16,025 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:13:16,026 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:13:16,026 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:13:16,026 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:13:16,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:16" (1/1) ... [2024-11-09 15:13:16,039 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:16" (1/1) ... [2024-11-09 15:13:16,072 INFO L138 Inliner]: procedures = 26, calls = 64, calls flagged for inlining = 23, calls inlined = 29, statements flattened = 386 [2024-11-09 15:13:16,075 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:13:16,076 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:13:16,076 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:13:16,076 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:13:16,094 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:16" (1/1) ... [2024-11-09 15:13:16,094 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:16" (1/1) ... [2024-11-09 15:13:16,103 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:16" (1/1) ... [2024-11-09 15:13:16,140 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-09 15:13:16,141 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:16" (1/1) ... [2024-11-09 15:13:16,141 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:16" (1/1) ... [2024-11-09 15:13:16,154 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:16" (1/1) ... [2024-11-09 15:13:16,159 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:16" (1/1) ... [2024-11-09 15:13:16,165 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:16" (1/1) ... [2024-11-09 15:13:16,167 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:16" (1/1) ... [2024-11-09 15:13:16,171 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:13:16,172 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:13:16,172 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:13:16,172 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:13:16,173 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:16" (1/1) ... [2024-11-09 15:13:16,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:13:16,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:16,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 15:13:16,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 15:13:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:13:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:13:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:13:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:13:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:13:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:13:16,266 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:13:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:13:16,266 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:13:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 15:13:16,268 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 15:13:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-09 15:13:16,268 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-09 15:13:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:13:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:13:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 15:13:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 15:13:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:13:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:13:16,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:13:16,273 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:13:16,404 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:13:16,405 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:13:16,911 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:13:16,911 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:13:17,516 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:13:17,517 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-09 15:13:17,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:13:17 BoogieIcfgContainer [2024-11-09 15:13:17,517 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:13:17,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:13:17,521 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:13:17,526 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:13:17,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:13:15" (1/3) ... [2024-11-09 15:13:17,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39111f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:13:17, skipping insertion in model container [2024-11-09 15:13:17,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:16" (2/3) ... [2024-11-09 15:13:17,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39111f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:13:17, skipping insertion in model container [2024-11-09 15:13:17,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:13:17" (3/3) ... [2024-11-09 15:13:17,530 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2024-11-09 15:13:17,549 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:13:17,549 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-11-09 15:13:17,549 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:13:17,699 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-09 15:13:17,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 86 transitions, 200 flow [2024-11-09 15:13:17,796 INFO L124 PetriNetUnfolderBase]: 7/82 cut-off events. [2024-11-09 15:13:17,797 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 15:13:17,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 82 events. 7/82 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 251 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-11-09 15:13:17,803 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 86 transitions, 200 flow [2024-11-09 15:13:17,807 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 80 transitions, 181 flow [2024-11-09 15:13:17,819 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:13:17,827 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;@17b75b9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:13:17,827 INFO L334 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2024-11-09 15:13:17,832 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:13:17,832 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:13:17,832 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:13:17,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:17,833 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:13:17,834 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-09 15:13:17,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:17,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1245631, now seen corresponding path program 1 times [2024-11-09 15:13:17,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:17,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958473793] [2024-11-09 15:13:17,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:17,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:18,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:18,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:18,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958473793] [2024-11-09 15:13:18,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958473793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:18,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:18,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:13:18,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037318479] [2024-11-09 15:13:18,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:18,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:13:18,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:18,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:13:18,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:13:18,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 86 [2024-11-09 15:13:18,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-11-09 15:13:18,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:18,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 86 [2024-11-09 15:13:18,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:22,153 INFO L124 PetriNetUnfolderBase]: 13776/19475 cut-off events. [2024-11-09 15:13:22,154 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2024-11-09 15:13:22,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38854 conditions, 19475 events. 13776/19475 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 2661. Compared 152995 event pairs, 13494 based on Foata normal form. 3/9028 useless extension candidates. Maximal degree in co-relation 35198. Up to 18358 conditions per place. [2024-11-09 15:13:22,441 INFO L140 encePairwiseOnDemand]: 59/86 looper letters, 49 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2024-11-09 15:13:22,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 78 transitions, 295 flow [2024-11-09 15:13:22,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:13:22,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:13:22,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-11-09 15:13:22,454 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-11-09 15:13:22,456 INFO L175 Difference]: Start difference. First operand has 86 places, 80 transitions, 181 flow. Second operand 4 states and 168 transitions. [2024-11-09 15:13:22,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 78 transitions, 295 flow [2024-11-09 15:13:22,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 78 transitions, 282 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-09 15:13:22,691 INFO L231 Difference]: Finished difference. Result has 74 places, 78 transitions, 234 flow [2024-11-09 15:13:22,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=74, PETRI_TRANSITIONS=78} [2024-11-09 15:13:22,700 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -12 predicate places. [2024-11-09 15:13:22,701 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 78 transitions, 234 flow [2024-11-09 15:13:22,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-11-09 15:13:22,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:22,708 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:13:22,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:13:22,708 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-09 15:13:22,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:22,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1544849614, now seen corresponding path program 1 times [2024-11-09 15:13:22,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:22,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64599188] [2024-11-09 15:13:22,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:22,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:22,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:22,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:22,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64599188] [2024-11-09 15:13:22,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64599188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:22,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763123128] [2024-11-09 15:13:22,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:22,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:22,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:22,895 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:13:22,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:13:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:23,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:13:23,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:23,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:23,076 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:13:23,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763123128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:23,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:13:23,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:13:23,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304517032] [2024-11-09 15:13:23,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:23,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:13:23,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:23,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:13:23,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:13:23,111 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 86 [2024-11-09 15:13:23,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 78 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:23,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:23,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 86 [2024-11-09 15:13:23,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:26,058 INFO L124 PetriNetUnfolderBase]: 13776/19472 cut-off events. [2024-11-09 15:13:26,059 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-09 15:13:26,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38387 conditions, 19472 events. 13776/19472 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 2661. Compared 152753 event pairs, 13494 based on Foata normal form. 3/9030 useless extension candidates. Maximal degree in co-relation 38314. Up to 18343 conditions per place. [2024-11-09 15:13:26,185 INFO L140 encePairwiseOnDemand]: 73/86 looper letters, 39 selfloop transitions, 17 changer transitions 0/75 dead transitions. [2024-11-09 15:13:26,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 75 transitions, 334 flow [2024-11-09 15:13:26,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:13:26,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:13:26,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-11-09 15:13:26,188 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3817829457364341 [2024-11-09 15:13:26,188 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 234 flow. Second operand 6 states and 197 transitions. [2024-11-09 15:13:26,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 75 transitions, 334 flow [2024-11-09 15:13:26,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 75 transitions, 334 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:13:26,194 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 256 flow [2024-11-09 15:13:26,194 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=76, PETRI_TRANSITIONS=75} [2024-11-09 15:13:26,195 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -10 predicate places. [2024-11-09 15:13:26,195 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 256 flow [2024-11-09 15:13:26,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:26,196 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:26,196 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:13:26,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 15:13:26,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:26,403 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-09 15:13:26,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:26,404 INFO L85 PathProgramCache]: Analyzing trace with hash -645696505, now seen corresponding path program 1 times [2024-11-09 15:13:26,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:26,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716363971] [2024-11-09 15:13:26,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:26,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:26,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:26,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:26,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716363971] [2024-11-09 15:13:26,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716363971] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:26,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684084494] [2024-11-09 15:13:26,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:26,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:26,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:26,525 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:13:26,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:13:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:26,627 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:13:26,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:26,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:26,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:26,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684084494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:26,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:26,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:13:26,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004547093] [2024-11-09 15:13:26,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:26,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:13:26,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:26,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:13:26,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:13:26,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 86 [2024-11-09 15:13:26,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 256 flow. Second operand has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 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) [2024-11-09 15:13:26,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:26,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 86 [2024-11-09 15:13:26,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:29,461 INFO L124 PetriNetUnfolderBase]: 13785/19508 cut-off events. [2024-11-09 15:13:29,461 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-09 15:13:29,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38528 conditions, 19508 events. 13785/19508 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 2661. Compared 153018 event pairs, 13494 based on Foata normal form. 9/9072 useless extension candidates. Maximal degree in co-relation 38316. Up to 18358 conditions per place. [2024-11-09 15:13:29,653 INFO L140 encePairwiseOnDemand]: 73/86 looper letters, 46 selfloop transitions, 37 changer transitions 0/102 dead transitions. [2024-11-09 15:13:29,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 102 transitions, 596 flow [2024-11-09 15:13:29,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:13:29,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:13:29,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 322 transitions. [2024-11-09 15:13:29,660 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3744186046511628 [2024-11-09 15:13:29,661 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 256 flow. Second operand 10 states and 322 transitions. [2024-11-09 15:13:29,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 102 transitions, 596 flow [2024-11-09 15:13:29,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 102 transitions, 513 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-09 15:13:29,667 INFO L231 Difference]: Finished difference. Result has 83 places, 102 transitions, 471 flow [2024-11-09 15:13:29,667 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=471, PETRI_PLACES=83, PETRI_TRANSITIONS=102} [2024-11-09 15:13:29,669 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -3 predicate places. [2024-11-09 15:13:29,669 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 102 transitions, 471 flow [2024-11-09 15:13:29,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 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) [2024-11-09 15:13:29,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:29,670 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:29,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 15:13:29,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 15:13:29,875 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-09 15:13:29,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:29,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1727424304, now seen corresponding path program 1 times [2024-11-09 15:13:29,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:29,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810400919] [2024-11-09 15:13:29,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:29,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:29,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:29,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:29,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810400919] [2024-11-09 15:13:29,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810400919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:29,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:29,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 15:13:29,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757959231] [2024-11-09 15:13:29,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:29,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:13:29,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:29,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:13:29,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:13:29,984 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 86 [2024-11-09 15:13:29,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 102 transitions, 471 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2024-11-09 15:13:29,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:29,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 86 [2024-11-09 15:13:29,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:32,873 INFO L124 PetriNetUnfolderBase]: 18260/26578 cut-off events. [2024-11-09 15:13:32,873 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-11-09 15:13:32,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51695 conditions, 26578 events. 18260/26578 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 2902. Compared 212753 event pairs, 5538 based on Foata normal form. 0/14270 useless extension candidates. Maximal degree in co-relation 51597. Up to 16566 conditions per place. [2024-11-09 15:13:33,062 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 109 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2024-11-09 15:13:33,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 133 transitions, 762 flow [2024-11-09 15:13:33,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:13:33,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:13:33,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2024-11-09 15:13:33,064 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6356589147286822 [2024-11-09 15:13:33,064 INFO L175 Difference]: Start difference. First operand has 83 places, 102 transitions, 471 flow. Second operand 3 states and 164 transitions. [2024-11-09 15:13:33,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 133 transitions, 762 flow [2024-11-09 15:13:33,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 133 transitions, 725 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-09 15:13:33,068 INFO L231 Difference]: Finished difference. Result has 84 places, 103 transitions, 448 flow [2024-11-09 15:13:33,069 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=448, PETRI_PLACES=84, PETRI_TRANSITIONS=103} [2024-11-09 15:13:33,069 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -2 predicate places. [2024-11-09 15:13:33,070 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 103 transitions, 448 flow [2024-11-09 15:13:33,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2024-11-09 15:13:33,070 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:33,070 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:33,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 15:13:33,071 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-09 15:13:33,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:33,072 INFO L85 PathProgramCache]: Analyzing trace with hash -29920813, now seen corresponding path program 1 times [2024-11-09 15:13:33,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:33,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038745761] [2024-11-09 15:13:33,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:33,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:33,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:33,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038745761] [2024-11-09 15:13:33,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038745761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:33,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:33,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 15:13:33,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873373211] [2024-11-09 15:13:33,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:33,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:13:33,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:33,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:13:33,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:13:33,169 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 86 [2024-11-09 15:13:33,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 103 transitions, 448 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2024-11-09 15:13:33,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:33,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 86 [2024-11-09 15:13:33,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:37,588 INFO L124 PetriNetUnfolderBase]: 25850/36748 cut-off events. [2024-11-09 15:13:37,588 INFO L125 PetriNetUnfolderBase]: For 3054/3054 co-relation queries the response was YES. [2024-11-09 15:13:37,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77591 conditions, 36748 events. 25850/36748 cut-off events. For 3054/3054 co-relation queries the response was YES. Maximal size of possible extension queue 3605. Compared 289790 event pairs, 8251 based on Foata normal form. 0/20193 useless extension candidates. Maximal degree in co-relation 77496. Up to 22147 conditions per place. [2024-11-09 15:13:37,848 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 109 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2024-11-09 15:13:37,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 133 transitions, 745 flow [2024-11-09 15:13:37,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:13:37,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:13:37,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2024-11-09 15:13:37,849 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-11-09 15:13:37,850 INFO L175 Difference]: Start difference. First operand has 84 places, 103 transitions, 448 flow. Second operand 3 states and 162 transitions. [2024-11-09 15:13:37,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 133 transitions, 745 flow [2024-11-09 15:13:37,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 133 transitions, 742 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:13:37,854 INFO L231 Difference]: Finished difference. Result has 86 places, 104 transitions, 460 flow [2024-11-09 15:13:37,854 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=460, PETRI_PLACES=86, PETRI_TRANSITIONS=104} [2024-11-09 15:13:37,855 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 0 predicate places. [2024-11-09 15:13:37,855 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 104 transitions, 460 flow [2024-11-09 15:13:37,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2024-11-09 15:13:37,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:37,855 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:37,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:13:37,855 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-09 15:13:37,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:37,856 INFO L85 PathProgramCache]: Analyzing trace with hash -29920817, now seen corresponding path program 1 times [2024-11-09 15:13:37,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:37,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904536020] [2024-11-09 15:13:37,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:37,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:37,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:37,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:37,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904536020] [2024-11-09 15:13:37,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904536020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:37,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:37,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:13:37,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769506843] [2024-11-09 15:13:37,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:37,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:13:37,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:37,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:13:37,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:13:37,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 86 [2024-11-09 15:13:37,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 104 transitions, 460 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 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) [2024-11-09 15:13:37,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:37,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 86 [2024-11-09 15:13:37,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:42,428 INFO L124 PetriNetUnfolderBase]: 27719/38507 cut-off events. [2024-11-09 15:13:42,428 INFO L125 PetriNetUnfolderBase]: For 4982/4982 co-relation queries the response was YES. [2024-11-09 15:13:42,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86164 conditions, 38507 events. 27719/38507 cut-off events. For 4982/4982 co-relation queries the response was YES. Maximal size of possible extension queue 3429. Compared 297532 event pairs, 24980 based on Foata normal form. 754/23266 useless extension candidates. Maximal degree in co-relation 86040. Up to 34045 conditions per place. [2024-11-09 15:13:42,704 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 114 selfloop transitions, 7 changer transitions 1/144 dead transitions. [2024-11-09 15:13:42,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 144 transitions, 863 flow [2024-11-09 15:13:42,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:13:42,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:13:42,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2024-11-09 15:13:42,705 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5755813953488372 [2024-11-09 15:13:42,705 INFO L175 Difference]: Start difference. First operand has 86 places, 104 transitions, 460 flow. Second operand 4 states and 198 transitions. [2024-11-09 15:13:42,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 144 transitions, 863 flow [2024-11-09 15:13:42,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 144 transitions, 861 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:13:42,712 INFO L231 Difference]: Finished difference. Result has 89 places, 104 transitions, 489 flow [2024-11-09 15:13:42,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=489, PETRI_PLACES=89, PETRI_TRANSITIONS=104} [2024-11-09 15:13:42,713 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2024-11-09 15:13:42,714 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 104 transitions, 489 flow [2024-11-09 15:13:42,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 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) [2024-11-09 15:13:42,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:42,714 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:42,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 15:13:42,715 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-09 15:13:42,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:42,715 INFO L85 PathProgramCache]: Analyzing trace with hash 602029617, now seen corresponding path program 1 times [2024-11-09 15:13:42,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:42,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100133181] [2024-11-09 15:13:42,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:42,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:42,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:42,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:42,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100133181] [2024-11-09 15:13:42,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100133181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:42,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:42,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:13:42,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548688004] [2024-11-09 15:13:42,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:42,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:13:42,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:42,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:13:42,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:13:42,804 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 86 [2024-11-09 15:13:42,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 104 transitions, 489 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2024-11-09 15:13:42,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:42,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 86 [2024-11-09 15:13:42,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:47,034 INFO L124 PetriNetUnfolderBase]: 23679/32917 cut-off events. [2024-11-09 15:13:47,035 INFO L125 PetriNetUnfolderBase]: For 7637/7637 co-relation queries the response was YES. [2024-11-09 15:13:47,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79710 conditions, 32917 events. 23679/32917 cut-off events. For 7637/7637 co-relation queries the response was YES. Maximal size of possible extension queue 2981. Compared 251251 event pairs, 21160 based on Foata normal form. 0/20077 useless extension candidates. Maximal degree in co-relation 79584. Up to 31123 conditions per place. [2024-11-09 15:13:47,259 INFO L140 encePairwiseOnDemand]: 84/86 looper letters, 80 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2024-11-09 15:13:47,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 103 transitions, 647 flow [2024-11-09 15:13:47,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:13:47,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:13:47,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2024-11-09 15:13:47,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5077519379844961 [2024-11-09 15:13:47,261 INFO L175 Difference]: Start difference. First operand has 89 places, 104 transitions, 489 flow. Second operand 3 states and 131 transitions. [2024-11-09 15:13:47,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 103 transitions, 647 flow [2024-11-09 15:13:47,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 103 transitions, 639 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 15:13:47,269 INFO L231 Difference]: Finished difference. Result has 89 places, 103 transitions, 479 flow [2024-11-09 15:13:47,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=479, PETRI_PLACES=89, PETRI_TRANSITIONS=103} [2024-11-09 15:13:47,270 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2024-11-09 15:13:47,270 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 103 transitions, 479 flow [2024-11-09 15:13:47,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2024-11-09 15:13:47,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:47,271 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:47,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 15:13:47,271 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-09 15:13:47,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:47,271 INFO L85 PathProgramCache]: Analyzing trace with hash 602029618, now seen corresponding path program 1 times [2024-11-09 15:13:47,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:47,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599477736] [2024-11-09 15:13:47,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:47,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:47,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:47,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:47,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599477736] [2024-11-09 15:13:47,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599477736] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:47,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491964629] [2024-11-09 15:13:47,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:47,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:47,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:47,354 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:13:47,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:13:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:47,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:13:47,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:47,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:47,502 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:13:47,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491964629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:47,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:13:47,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2024-11-09 15:13:47,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326046782] [2024-11-09 15:13:47,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:47,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:13:47,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:47,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:13:47,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 15:13:47,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 86 [2024-11-09 15:13:47,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 103 transitions, 479 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2024-11-09 15:13:47,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:47,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 86 [2024-11-09 15:13:47,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand