./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc 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-bad-commit-1.wvr-bad.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 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:05:51,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:05:51,549 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:05:51,555 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:05:51,556 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:05:51,586 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:05:51,586 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:05:51,587 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:05:51,587 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:05:51,588 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:05:51,588 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:05:51,589 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:05:51,590 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:05:51,593 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:05:51,594 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:05:51,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:05:51,594 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:05:51,594 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:05:51,595 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:05:51,595 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:05:51,595 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:05:51,596 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:05:51,596 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:05:51,597 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:05:51,597 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:05:51,597 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:05:51,597 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:05:51,597 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:05:51,598 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:05:51,598 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:05:51,599 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:05:51,599 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:05:51,599 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:05:51,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:05:51,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:05:51,600 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:05:51,600 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:05:51,601 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:05:51,601 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:05:51,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:05:51,601 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:05:51,602 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:05:51,602 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:05:51,602 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:05:51,602 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 [2024-11-19 14:05:51,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:05:51,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:05:51,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:05:51,901 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:05:51,901 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:05:51,903 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2024-11-19 14:05:53,333 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:05:53,538 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:05:53,539 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2024-11-19 14:05:53,549 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5980826b6/849fbf6bb8024ef1b820439b6c787193/FLAGb1cbdb7c9 [2024-11-19 14:05:53,564 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5980826b6/849fbf6bb8024ef1b820439b6c787193 [2024-11-19 14:05:53,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:05:53,567 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:05:53,568 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:05:53,568 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:05:53,580 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:05:53,584 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:05:53" (1/1) ... [2024-11-19 14:05:53,585 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3b7229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:53, skipping insertion in model container [2024-11-19 14:05:53,585 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:05:53" (1/1) ... [2024-11-19 14:05:53,623 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:05:53,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:05:53,876 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:05:53,904 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:05:53,920 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:05:53,921 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:53 WrapperNode [2024-11-19 14:05:53,921 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:05:53,922 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:05:53,922 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:05:53,923 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:05:53,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:53" (1/1) ... [2024-11-19 14:05:53,936 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:53" (1/1) ... [2024-11-19 14:05:53,966 INFO L138 Inliner]: procedures = 24, calls = 54, calls flagged for inlining = 21, calls inlined = 25, statements flattened = 361 [2024-11-19 14:05:53,967 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:05:53,968 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:05:53,968 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:05:53,968 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:05:53,979 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:53" (1/1) ... [2024-11-19 14:05:53,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:53" (1/1) ... [2024-11-19 14:05:53,984 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:53" (1/1) ... [2024-11-19 14:05:54,017 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 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]. [2024-11-19 14:05:54,017 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:53" (1/1) ... [2024-11-19 14:05:54,017 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:53" (1/1) ... [2024-11-19 14:05:54,030 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:53" (1/1) ... [2024-11-19 14:05:54,035 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:53" (1/1) ... [2024-11-19 14:05:54,037 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:53" (1/1) ... [2024-11-19 14:05:54,039 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:53" (1/1) ... [2024-11-19 14:05:54,042 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:05:54,043 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:05:54,043 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:05:54,043 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:05:54,044 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:53" (1/1) ... [2024-11-19 14:05:54,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:05:54,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:05:54,079 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) [2024-11-19 14:05:54,082 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 [2024-11-19 14:05:54,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:05:54,131 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:05:54,131 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:05:54,131 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:05:54,131 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:05:54,131 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 14:05:54,132 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 14:05:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:05:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:05:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:05:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:05:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 14:05:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 14:05:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:05:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:05:54,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:05:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:05:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:05:54,137 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:05:54,265 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:05:54,267 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:05:54,870 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:05:54,871 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:05:55,307 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:05:55,307 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-19 14:05:55,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:05:55 BoogieIcfgContainer [2024-11-19 14:05:55,308 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:05:55,310 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:05:55,310 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:05:55,313 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:05:55,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:05:53" (1/3) ... [2024-11-19 14:05:55,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dce25fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:05:55, skipping insertion in model container [2024-11-19 14:05:55,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:53" (2/3) ... [2024-11-19 14:05:55,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dce25fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:05:55, skipping insertion in model container [2024-11-19 14:05:55,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:05:55" (3/3) ... [2024-11-19 14:05:55,317 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-1.wvr-bad.c [2024-11-19 14:05:55,335 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:05:55,336 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-11-19 14:05:55,336 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:05:55,417 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 14:05:55,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 87 transitions, 195 flow [2024-11-19 14:05:55,509 INFO L124 PetriNetUnfolderBase]: 17/84 cut-off events. [2024-11-19 14:05:55,510 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 14:05:55,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 84 events. 17/84 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 256 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 67. Up to 6 conditions per place. [2024-11-19 14:05:55,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 87 transitions, 195 flow [2024-11-19 14:05:55,519 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 82 transitions, 179 flow [2024-11-19 14:05:55,528 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:05:55,535 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;@73cdbf67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:05:55,536 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-11-19 14:05:55,539 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:05:55,539 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:05:55,540 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:05:55,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:05:55,540 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:05:55,541 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-19 14:05:55,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:05:55,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1088654, now seen corresponding path program 1 times [2024-11-19 14:05:55,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:05:55,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10631709] [2024-11-19 14:05:55,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:55,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:05:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:55,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:05:55,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10631709] [2024-11-19 14:05:55,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10631709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:05:55,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:05:55,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:05:55,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072672199] [2024-11-19 14:05:55,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:05:55,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:05:55,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:05:55,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:05:55,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:05:55,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2024-11-19 14:05:55,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 82 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2024-11-19 14:05:55,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:05:55,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2024-11-19 14:05:55,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:05:56,691 INFO L124 PetriNetUnfolderBase]: 3370/4957 cut-off events. [2024-11-19 14:05:56,692 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2024-11-19 14:05:56,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9479 conditions, 4957 events. 3370/4957 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 27824 event pairs, 2182 based on Foata normal form. 3/3096 useless extension candidates. Maximal degree in co-relation 9006. Up to 4308 conditions per place. [2024-11-19 14:05:56,742 INFO L140 encePairwiseOnDemand]: 60/87 looper letters, 51 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2024-11-19 14:05:56,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 80 transitions, 297 flow [2024-11-19 14:05:56,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:05:56,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:05:56,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2024-11-19 14:05:56,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47701149425287354 [2024-11-19 14:05:56,761 INFO L175 Difference]: Start difference. First operand has 75 places, 82 transitions, 179 flow. Second operand 4 states and 166 transitions. [2024-11-19 14:05:56,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 80 transitions, 297 flow [2024-11-19 14:05:56,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 80 transitions, 288 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 14:05:56,777 INFO L231 Difference]: Finished difference. Result has 68 places, 80 transitions, 236 flow [2024-11-19 14:05:56,780 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=68, PETRI_TRANSITIONS=80} [2024-11-19 14:05:56,786 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -7 predicate places. [2024-11-19 14:05:56,787 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 80 transitions, 236 flow [2024-11-19 14:05:56,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2024-11-19 14:05:56,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:05:56,788 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 14:05:56,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:05:56,788 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-19 14:05:56,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:05:56,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1926551673, now seen corresponding path program 1 times [2024-11-19 14:05:56,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:05:56,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223332975] [2024-11-19 14:05:56,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:56,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:05:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:56,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:56,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:05:56,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223332975] [2024-11-19 14:05:56,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223332975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:05:56,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017905374] [2024-11-19 14:05:56,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:56,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:05:56,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:05:56,985 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) [2024-11-19 14:05:56,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:05:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:57,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:05:57,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:05:57,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:57,118 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:05:57,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017905374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:05:57,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:05:57,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:05:57,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371086396] [2024-11-19 14:05:57,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:05:57,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:05:57,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:05:57,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:05:57,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:05:57,146 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2024-11-19 14:05:57,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 80 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:05:57,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:05:57,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2024-11-19 14:05:57,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:05:57,777 INFO L124 PetriNetUnfolderBase]: 3370/4954 cut-off events. [2024-11-19 14:05:57,777 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-11-19 14:05:57,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9439 conditions, 4954 events. 3370/4954 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 27798 event pairs, 2182 based on Foata normal form. 3/3098 useless extension candidates. Maximal degree in co-relation 9366. Up to 4293 conditions per place. [2024-11-19 14:05:57,812 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 41 selfloop transitions, 17 changer transitions 0/77 dead transitions. [2024-11-19 14:05:57,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 340 flow [2024-11-19 14:05:57,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:05:57,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:05:57,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-11-19 14:05:57,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36973180076628354 [2024-11-19 14:05:57,816 INFO L175 Difference]: Start difference. First operand has 68 places, 80 transitions, 236 flow. Second operand 6 states and 193 transitions. [2024-11-19 14:05:57,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 340 flow [2024-11-19 14:05:57,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 77 transitions, 340 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:05:57,819 INFO L231 Difference]: Finished difference. Result has 70 places, 77 transitions, 258 flow [2024-11-19 14:05:57,820 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=70, PETRI_TRANSITIONS=77} [2024-11-19 14:05:57,821 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -5 predicate places. [2024-11-19 14:05:57,821 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 77 transitions, 258 flow [2024-11-19 14:05:57,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:05:57,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:05:57,822 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:05:57,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 14:05:58,022 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 [2024-11-19 14:05:58,023 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-19 14:05:58,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:05:58,023 INFO L85 PathProgramCache]: Analyzing trace with hash 406441385, now seen corresponding path program 1 times [2024-11-19 14:05:58,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:05:58,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272680948] [2024-11-19 14:05:58,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:58,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:05:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:58,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:58,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:05:58,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272680948] [2024-11-19 14:05:58,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272680948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:05:58,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114535543] [2024-11-19 14:05:58,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:58,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:05:58,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:05:58,146 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) [2024-11-19 14:05:58,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:05:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:58,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:05:58,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:05:58,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:58,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:05:58,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:58,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114535543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:05:58,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:05:58,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:05:58,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130989996] [2024-11-19 14:05:58,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:05:58,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:05:58,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:05:58,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:05:58,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:05:58,360 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2024-11-19 14:05:58,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 77 transitions, 258 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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) [2024-11-19 14:05:58,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:05:58,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2024-11-19 14:05:58,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:05:59,052 INFO L124 PetriNetUnfolderBase]: 3379/4990 cut-off events. [2024-11-19 14:05:59,052 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2024-11-19 14:05:59,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9580 conditions, 4990 events. 3379/4990 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 28236 event pairs, 2182 based on Foata normal form. 9/3140 useless extension candidates. Maximal degree in co-relation 9368. Up to 4308 conditions per place. [2024-11-19 14:05:59,093 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 48 selfloop transitions, 37 changer transitions 0/104 dead transitions. [2024-11-19 14:05:59,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 104 transitions, 602 flow [2024-11-19 14:05:59,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:05:59,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:05:59,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 314 transitions. [2024-11-19 14:05:59,097 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36091954022988504 [2024-11-19 14:05:59,097 INFO L175 Difference]: Start difference. First operand has 70 places, 77 transitions, 258 flow. Second operand 10 states and 314 transitions. [2024-11-19 14:05:59,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 104 transitions, 602 flow [2024-11-19 14:05:59,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 104 transitions, 519 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-19 14:05:59,102 INFO L231 Difference]: Finished difference. Result has 77 places, 104 transitions, 473 flow [2024-11-19 14:05:59,103 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=473, PETRI_PLACES=77, PETRI_TRANSITIONS=104} [2024-11-19 14:05:59,103 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 2 predicate places. [2024-11-19 14:05:59,104 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 104 transitions, 473 flow [2024-11-19 14:05:59,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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) [2024-11-19 14:05:59,104 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:05:59,104 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:05:59,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 14:05:59,308 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 [2024-11-19 14:05:59,309 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-19 14:05:59,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:05:59,310 INFO L85 PathProgramCache]: Analyzing trace with hash -949420071, now seen corresponding path program 1 times [2024-11-19 14:05:59,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:05:59,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287472939] [2024-11-19 14:05:59,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:59,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:05:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:59,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:59,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:05:59,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287472939] [2024-11-19 14:05:59,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287472939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:05:59,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:05:59,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:05:59,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909844759] [2024-11-19 14:05:59,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:05:59,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:05:59,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:05:59,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:05:59,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:05:59,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-19 14:05:59,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 104 transitions, 473 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2024-11-19 14:05:59,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:05:59,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-19 14:05:59,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:00,186 INFO L124 PetriNetUnfolderBase]: 5838/8627 cut-off events. [2024-11-19 14:06:00,187 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2024-11-19 14:06:00,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16513 conditions, 8627 events. 5838/8627 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 51730 event pairs, 1884 based on Foata normal form. 214/5774 useless extension candidates. Maximal degree in co-relation 16415. Up to 4473 conditions per place. [2024-11-19 14:06:00,247 INFO L140 encePairwiseOnDemand]: 80/87 looper letters, 108 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2024-11-19 14:06:00,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 133 transitions, 757 flow [2024-11-19 14:06:00,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:00,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:00,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-19 14:06:00,249 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6245210727969349 [2024-11-19 14:06:00,249 INFO L175 Difference]: Start difference. First operand has 77 places, 104 transitions, 473 flow. Second operand 3 states and 163 transitions. [2024-11-19 14:06:00,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 133 transitions, 757 flow [2024-11-19 14:06:00,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 133 transitions, 720 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:00,254 INFO L231 Difference]: Finished difference. Result has 78 places, 106 transitions, 461 flow [2024-11-19 14:06:00,255 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=461, PETRI_PLACES=78, PETRI_TRANSITIONS=106} [2024-11-19 14:06:00,256 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2024-11-19 14:06:00,256 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 106 transitions, 461 flow [2024-11-19 14:06:00,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2024-11-19 14:06:00,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:00,256 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:00,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:06:00,257 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-19 14:06:00,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:00,257 INFO L85 PathProgramCache]: Analyzing trace with hash 632751011, now seen corresponding path program 1 times [2024-11-19 14:06:00,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:00,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207625284] [2024-11-19 14:06:00,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:00,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:00,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:00,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:00,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207625284] [2024-11-19 14:06:00,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207625284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:00,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:00,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:06:00,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981641426] [2024-11-19 14:06:00,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:00,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:00,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:00,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:00,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:00,316 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 87 [2024-11-19 14:06:00,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 106 transitions, 461 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2024-11-19 14:06:00,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:00,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 87 [2024-11-19 14:06:00,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:01,480 INFO L124 PetriNetUnfolderBase]: 8495/12342 cut-off events. [2024-11-19 14:06:01,480 INFO L125 PetriNetUnfolderBase]: For 953/965 co-relation queries the response was YES. [2024-11-19 14:06:01,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25452 conditions, 12342 events. 8495/12342 cut-off events. For 953/965 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 70022 event pairs, 3181 based on Foata normal form. 0/9349 useless extension candidates. Maximal degree in co-relation 25357. Up to 5816 conditions per place. [2024-11-19 14:06:01,564 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 111 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2024-11-19 14:06:01,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 132 transitions, 751 flow [2024-11-19 14:06:01,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:01,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:01,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-11-19 14:06:01,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2024-11-19 14:06:01,566 INFO L175 Difference]: Start difference. First operand has 78 places, 106 transitions, 461 flow. Second operand 3 states and 147 transitions. [2024-11-19 14:06:01,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 132 transitions, 751 flow [2024-11-19 14:06:01,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 132 transitions, 748 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:01,571 INFO L231 Difference]: Finished difference. Result has 81 places, 107 transitions, 480 flow [2024-11-19 14:06:01,572 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=480, PETRI_PLACES=81, PETRI_TRANSITIONS=107} [2024-11-19 14:06:01,573 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2024-11-19 14:06:01,574 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 107 transitions, 480 flow [2024-11-19 14:06:01,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2024-11-19 14:06:01,574 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:01,575 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:01,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:06:01,575 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-19 14:06:01,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:01,576 INFO L85 PathProgramCache]: Analyzing trace with hash 54267241, now seen corresponding path program 1 times [2024-11-19 14:06:01,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:01,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972633529] [2024-11-19 14:06:01,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:01,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:01,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:01,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:01,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972633529] [2024-11-19 14:06:01,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972633529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:01,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:01,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:06:01,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644138942] [2024-11-19 14:06:01,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:01,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:01,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:01,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:01,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:01,634 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-19 14:06:01,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 107 transitions, 480 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) [2024-11-19 14:06:01,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:01,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-19 14:06:01,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:03,176 INFO L124 PetriNetUnfolderBase]: 10419/15911 cut-off events. [2024-11-19 14:06:03,177 INFO L125 PetriNetUnfolderBase]: For 3518/3626 co-relation queries the response was YES. [2024-11-19 14:06:03,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33888 conditions, 15911 events. 10419/15911 cut-off events. For 3518/3626 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 99443 event pairs, 4177 based on Foata normal form. 315/12544 useless extension candidates. Maximal degree in co-relation 33792. Up to 7196 conditions per place. [2024-11-19 14:06:03,269 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 113 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2024-11-19 14:06:03,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 138 transitions, 796 flow [2024-11-19 14:06:03,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:03,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:03,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-19 14:06:03,271 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6245210727969349 [2024-11-19 14:06:03,271 INFO L175 Difference]: Start difference. First operand has 81 places, 107 transitions, 480 flow. Second operand 3 states and 163 transitions. [2024-11-19 14:06:03,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 138 transitions, 796 flow [2024-11-19 14:06:03,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 138 transitions, 784 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:03,278 INFO L231 Difference]: Finished difference. Result has 82 places, 108 transitions, 486 flow [2024-11-19 14:06:03,279 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=486, PETRI_PLACES=82, PETRI_TRANSITIONS=108} [2024-11-19 14:06:03,279 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 7 predicate places. [2024-11-19 14:06:03,280 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 108 transitions, 486 flow [2024-11-19 14:06:03,280 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) [2024-11-19 14:06:03,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:03,280 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:03,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:06:03,280 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-19 14:06:03,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:03,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1682286636, now seen corresponding path program 1 times [2024-11-19 14:06:03,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:03,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761720422] [2024-11-19 14:06:03,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:03,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:03,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:03,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:03,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761720422] [2024-11-19 14:06:03,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761720422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:03,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:03,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:06:03,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642277751] [2024-11-19 14:06:03,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:03,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:03,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:03,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:03,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:03,339 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 87 [2024-11-19 14:06:03,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 108 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-11-19 14:06:03,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:03,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 87 [2024-11-19 14:06:03,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:04,786 INFO L124 PetriNetUnfolderBase]: 14063/20642 cut-off events. [2024-11-19 14:06:04,786 INFO L125 PetriNetUnfolderBase]: For 3209/3433 co-relation queries the response was YES. [2024-11-19 14:06:04,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43484 conditions, 20642 events. 14063/20642 cut-off events. For 3209/3433 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 124279 event pairs, 6937 based on Foata normal form. 0/16000 useless extension candidates. Maximal degree in co-relation 43387. Up to 12185 conditions per place. [2024-11-19 14:06:04,889 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 111 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2024-11-19 14:06:04,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 135 transitions, 786 flow [2024-11-19 14:06:04,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:04,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:04,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-11-19 14:06:04,891 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-11-19 14:06:04,891 INFO L175 Difference]: Start difference. First operand has 82 places, 108 transitions, 486 flow. Second operand 3 states and 153 transitions. [2024-11-19 14:06:04,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 135 transitions, 786 flow [2024-11-19 14:06:04,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 135 transitions, 784 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:04,897 INFO L231 Difference]: Finished difference. Result has 85 places, 108 transitions, 502 flow [2024-11-19 14:06:04,897 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=502, PETRI_PLACES=85, PETRI_TRANSITIONS=108} [2024-11-19 14:06:04,897 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 10 predicate places. [2024-11-19 14:06:04,898 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 108 transitions, 502 flow [2024-11-19 14:06:04,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-11-19 14:06:04,898 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:04,898 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:04,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 14:06:04,899 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-19 14:06:04,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:04,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1596552619, now seen corresponding path program 1 times [2024-11-19 14:06:04,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:04,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192041658] [2024-11-19 14:06:04,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:04,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:05,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:05,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:05,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192041658] [2024-11-19 14:06:05,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192041658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:05,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:05,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:06:05,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019542076] [2024-11-19 14:06:05,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:05,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:05,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:05,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:05,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:05,035 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-19 14:06:05,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 108 transitions, 502 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) [2024-11-19 14:06:05,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:05,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-19 14:06:05,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:06,615 INFO L124 PetriNetUnfolderBase]: 12513/19151 cut-off events. [2024-11-19 14:06:06,615 INFO L125 PetriNetUnfolderBase]: For 6079/6471 co-relation queries the response was YES. [2024-11-19 14:06:06,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41688 conditions, 19151 events. 12513/19151 cut-off events. For 6079/6471 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 120268 event pairs, 9361 based on Foata normal form. 112/14998 useless extension candidates. Maximal degree in co-relation 41533. Up to 15248 conditions per place. [2024-11-19 14:06:06,735 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 131 selfloop transitions, 3 changer transitions 2/160 dead transitions. [2024-11-19 14:06:06,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 160 transitions, 1013 flow [2024-11-19 14:06:06,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:06,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:06,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 191 transitions. [2024-11-19 14:06:06,737 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5488505747126436 [2024-11-19 14:06:06,737 INFO L175 Difference]: Start difference. First operand has 85 places, 108 transitions, 502 flow. Second operand 4 states and 191 transitions. [2024-11-19 14:06:06,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 160 transitions, 1013 flow [2024-11-19 14:06:06,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 160 transitions, 1005 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:06,748 INFO L231 Difference]: Finished difference. Result has 87 places, 108 transitions, 505 flow [2024-11-19 14:06:06,749 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=505, PETRI_PLACES=87, PETRI_TRANSITIONS=108} [2024-11-19 14:06:06,749 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 12 predicate places. [2024-11-19 14:06:06,750 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 108 transitions, 505 flow [2024-11-19 14:06:06,750 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) [2024-11-19 14:06:06,750 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:06,750 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:06,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 14:06:06,750 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-19 14:06:06,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:06,751 INFO L85 PathProgramCache]: Analyzing trace with hash 2046478543, now seen corresponding path program 1 times [2024-11-19 14:06:06,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:06,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906143964] [2024-11-19 14:06:06,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:06,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:06,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:06,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:06,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906143964] [2024-11-19 14:06:06,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906143964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:06,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:06,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:06:06,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185581254] [2024-11-19 14:06:06,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:06,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:06,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:06,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:06,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:06,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 87 [2024-11-19 14:06:06,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 108 transitions, 505 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2024-11-19 14:06:06,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:06,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 87 [2024-11-19 14:06:06,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:09,465 INFO L124 PetriNetUnfolderBase]: 23803/34699 cut-off events. [2024-11-19 14:06:09,465 INFO L125 PetriNetUnfolderBase]: For 9839/10653 co-relation queries the response was YES. [2024-11-19 14:06:09,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76593 conditions, 34699 events. 23803/34699 cut-off events. For 9839/10653 co-relation queries the response was YES. Maximal size of possible extension queue 1107. Compared 216269 event pairs, 13589 based on Foata normal form. 0/26669 useless extension candidates. Maximal degree in co-relation 76437. Up to 16287 conditions per place. [2024-11-19 14:06:09,700 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 111 selfloop transitions, 5 changer transitions 0/137 dead transitions. [2024-11-19 14:06:09,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 137 transitions, 823 flow [2024-11-19 14:06:09,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:09,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:09,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-11-19 14:06:09,701 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-11-19 14:06:09,701 INFO L175 Difference]: Start difference. First operand has 87 places, 108 transitions, 505 flow. Second operand 3 states and 153 transitions. [2024-11-19 14:06:09,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 137 transitions, 823 flow [2024-11-19 14:06:09,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 137 transitions, 819 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:09,713 INFO L231 Difference]: Finished difference. Result has 90 places, 109 transitions, 527 flow [2024-11-19 14:06:09,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=527, PETRI_PLACES=90, PETRI_TRANSITIONS=109} [2024-11-19 14:06:09,714 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 15 predicate places. [2024-11-19 14:06:09,714 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 109 transitions, 527 flow [2024-11-19 14:06:09,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2024-11-19 14:06:09,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:09,715 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-19 14:06:09,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 14:06:09,715 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-19 14:06:09,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:09,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1946749246, now seen corresponding path program 2 times [2024-11-19 14:06:09,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:09,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999996071] [2024-11-19 14:06:09,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:06:09,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:09,729 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:06:09,731 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:06:09,770 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:06:09,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:09,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999996071] [2024-11-19 14:06:09,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999996071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:09,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89332883] [2024-11-19 14:06:09,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:06:09,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:09,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:09,774 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) [2024-11-19 14:06:09,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:06:09,848 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:06:09,849 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:06:09,850 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:06:09,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:09,873 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:06:09,874 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:09,897 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:06:09,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89332883] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:09,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:09,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-19 14:06:09,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633094126] [2024-11-19 14:06:09,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:09,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:09,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:09,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:09,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:09,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2024-11-19 14:06:09,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 109 transitions, 527 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 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) [2024-11-19 14:06:09,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:09,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2024-11-19 14:06:09,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:12,216 INFO L124 PetriNetUnfolderBase]: 18815/28866 cut-off events. [2024-11-19 14:06:12,216 INFO L125 PetriNetUnfolderBase]: For 12096/13214 co-relation queries the response was YES. [2024-11-19 14:06:12,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65261 conditions, 28866 events. 18815/28866 cut-off events. For 12096/13214 co-relation queries the response was YES. Maximal size of possible extension queue 916. Compared 197126 event pairs, 15031 based on Foata normal form. 5/22943 useless extension candidates. Maximal degree in co-relation 65129. Up to 24910 conditions per place. [2024-11-19 14:06:12,396 INFO L140 encePairwiseOnDemand]: 76/87 looper letters, 47 selfloop transitions, 36 changer transitions 1/106 dead transitions. [2024-11-19 14:06:12,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 106 transitions, 665 flow [2024-11-19 14:06:12,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:12,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:12,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-11-19 14:06:12,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3936781609195402 [2024-11-19 14:06:12,400 INFO L175 Difference]: Start difference. First operand has 90 places, 109 transitions, 527 flow. Second operand 4 states and 137 transitions. [2024-11-19 14:06:12,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 106 transitions, 665 flow [2024-11-19 14:06:12,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 106 transitions, 625 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-19 14:06:12,413 INFO L231 Difference]: Finished difference. Result has 84 places, 105 transitions, 524 flow [2024-11-19 14:06:12,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=524, PETRI_PLACES=84, PETRI_TRANSITIONS=105} [2024-11-19 14:06:12,414 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 9 predicate places. [2024-11-19 14:06:12,414 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 105 transitions, 524 flow [2024-11-19 14:06:12,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 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) [2024-11-19 14:06:12,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:12,415 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:12,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 14:06:12,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:12,617 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-19 14:06:12,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:12,617 INFO L85 PathProgramCache]: Analyzing trace with hash 809398798, now seen corresponding path program 1 times [2024-11-19 14:06:12,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:12,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635579858] [2024-11-19 14:06:12,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:12,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:12,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:12,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635579858] [2024-11-19 14:06:12,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635579858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:12,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192112209] [2024-11-19 14:06:12,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:12,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:12,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:12,958 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:12,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:06:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:13,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:06:13,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:13,089 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:06:13,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192112209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:13,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:06:13,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-19 14:06:13,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751716257] [2024-11-19 14:06:13,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:13,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:13,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:13,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:13,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 14:06:13,091 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-19 14:06:13,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 105 transitions, 524 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-19 14:06:13,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:13,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-19 14:06:13,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:14,842 INFO L124 PetriNetUnfolderBase]: 13824/21468 cut-off events. [2024-11-19 14:06:14,843 INFO L125 PetriNetUnfolderBase]: For 7846/8758 co-relation queries the response was YES. [2024-11-19 14:06:14,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46820 conditions, 21468 events. 13824/21468 cut-off events. For 7846/8758 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 143360 event pairs, 10758 based on Foata normal form. 1221/18133 useless extension candidates. Maximal degree in co-relation 46582. Up to 18121 conditions per place. [2024-11-19 14:06:14,939 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 78 selfloop transitions, 1 changer transitions 0/101 dead transitions. [2024-11-19 14:06:14,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 101 transitions, 668 flow [2024-11-19 14:06:14,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:14,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:14,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-11-19 14:06:14,940 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49808429118773945 [2024-11-19 14:06:14,940 INFO L175 Difference]: Start difference. First operand has 84 places, 105 transitions, 524 flow. Second operand 3 states and 130 transitions. [2024-11-19 14:06:14,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 101 transitions, 668 flow [2024-11-19 14:06:14,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 101 transitions, 594 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-19 14:06:14,949 INFO L231 Difference]: Finished difference. Result has 77 places, 101 transitions, 438 flow [2024-11-19 14:06:14,950 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=438, PETRI_PLACES=77, PETRI_TRANSITIONS=101} [2024-11-19 14:06:14,950 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 2 predicate places. [2024-11-19 14:06:14,950 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 101 transitions, 438 flow [2024-11-19 14:06:14,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-19 14:06:14,950 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:14,951 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:14,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 14:06:15,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:15,151 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-19 14:06:15,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:15,152 INFO L85 PathProgramCache]: Analyzing trace with hash 699655823, now seen corresponding path program 1 times [2024-11-19 14:06:15,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:15,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587053248] [2024-11-19 14:06:15,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:15,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:15,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 14:06:15,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:15,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587053248] [2024-11-19 14:06:15,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587053248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:15,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:15,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:06:15,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775667977] [2024-11-19 14:06:15,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:15,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:15,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:15,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:15,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:15,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-19 14:06:15,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 101 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2024-11-19 14:06:15,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:15,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-19 14:06:15,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:16,820 INFO L124 PetriNetUnfolderBase]: 18120/27226 cut-off events. [2024-11-19 14:06:16,821 INFO L125 PetriNetUnfolderBase]: For 10648/12466 co-relation queries the response was YES. [2024-11-19 14:06:16,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61148 conditions, 27226 events. 18120/27226 cut-off events. For 10648/12466 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 170889 event pairs, 6045 based on Foata normal form. 566/22681 useless extension candidates. Maximal degree in co-relation 61128. Up to 17545 conditions per place. [2024-11-19 14:06:16,959 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 103 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2024-11-19 14:06:16,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 127 transitions, 728 flow [2024-11-19 14:06:16,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:16,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:16,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-11-19 14:06:16,961 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-11-19 14:06:16,961 INFO L175 Difference]: Start difference. First operand has 77 places, 101 transitions, 438 flow. Second operand 3 states and 153 transitions. [2024-11-19 14:06:16,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 127 transitions, 728 flow [2024-11-19 14:06:16,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 127 transitions, 727 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:16,968 INFO L231 Difference]: Finished difference. Result has 79 places, 102 transitions, 453 flow [2024-11-19 14:06:16,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=453, PETRI_PLACES=79, PETRI_TRANSITIONS=102} [2024-11-19 14:06:16,969 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2024-11-19 14:06:16,969 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 102 transitions, 453 flow [2024-11-19 14:06:16,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2024-11-19 14:06:16,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:16,970 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:16,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 14:06:16,970 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-19 14:06:16,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:16,970 INFO L85 PathProgramCache]: Analyzing trace with hash 244766108, now seen corresponding path program 1 times [2024-11-19 14:06:16,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:16,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797932194] [2024-11-19 14:06:16,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:16,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:17,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 14:06:17,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:17,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797932194] [2024-11-19 14:06:17,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797932194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:17,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:17,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:17,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418958811] [2024-11-19 14:06:17,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:17,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:17,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:17,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:17,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:17,087 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-19 14:06:17,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 102 transitions, 453 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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) [2024-11-19 14:06:17,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:17,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-19 14:06:17,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:19,833 INFO L124 PetriNetUnfolderBase]: 23693/36204 cut-off events. [2024-11-19 14:06:19,833 INFO L125 PetriNetUnfolderBase]: For 15315/17362 co-relation queries the response was YES. [2024-11-19 14:06:19,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82238 conditions, 36204 events. 23693/36204 cut-off events. For 15315/17362 co-relation queries the response was YES. Maximal size of possible extension queue 852. Compared 243052 event pairs, 18637 based on Foata normal form. 320/29486 useless extension candidates. Maximal degree in co-relation 82216. Up to 24052 conditions per place. [2024-11-19 14:06:20,232 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 101 selfloop transitions, 8 changer transitions 0/131 dead transitions. [2024-11-19 14:06:20,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 131 transitions, 764 flow [2024-11-19 14:06:20,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:20,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:20,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-11-19 14:06:20,235 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2024-11-19 14:06:20,235 INFO L175 Difference]: Start difference. First operand has 79 places, 102 transitions, 453 flow. Second operand 4 states and 186 transitions. [2024-11-19 14:06:20,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 131 transitions, 764 flow [2024-11-19 14:06:20,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 131 transitions, 761 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:20,245 INFO L231 Difference]: Finished difference. Result has 82 places, 102 transitions, 478 flow [2024-11-19 14:06:20,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=478, PETRI_PLACES=82, PETRI_TRANSITIONS=102} [2024-11-19 14:06:20,246 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 7 predicate places. [2024-11-19 14:06:20,246 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 102 transitions, 478 flow [2024-11-19 14:06:20,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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) [2024-11-19 14:06:20,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:20,247 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:20,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 14:06:20,247 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-19 14:06:20,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:20,247 INFO L85 PathProgramCache]: Analyzing trace with hash 329138939, now seen corresponding path program 1 times [2024-11-19 14:06:20,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:20,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116737806] [2024-11-19 14:06:20,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:20,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:20,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:20,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116737806] [2024-11-19 14:06:20,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116737806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:20,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:20,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:20,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884783458] [2024-11-19 14:06:20,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:20,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:20,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:20,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:20,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:20,300 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 87 [2024-11-19 14:06:20,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 102 transitions, 478 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2024-11-19 14:06:20,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:20,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 87 [2024-11-19 14:06:20,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:23,175 INFO L124 PetriNetUnfolderBase]: 26991/38864 cut-off events. [2024-11-19 14:06:23,175 INFO L125 PetriNetUnfolderBase]: For 16844/19007 co-relation queries the response was YES. [2024-11-19 14:06:23,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91711 conditions, 38864 events. 26991/38864 cut-off events. For 16844/19007 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 226049 event pairs, 14081 based on Foata normal form. 452/33486 useless extension candidates. Maximal degree in co-relation 91687. Up to 24066 conditions per place. [2024-11-19 14:06:23,375 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 103 selfloop transitions, 4 changer transitions 1/124 dead transitions. [2024-11-19 14:06:23,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 124 transitions, 760 flow [2024-11-19 14:06:23,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:23,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:23,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-11-19 14:06:23,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2024-11-19 14:06:23,376 INFO L175 Difference]: Start difference. First operand has 82 places, 102 transitions, 478 flow. Second operand 3 states and 140 transitions. [2024-11-19 14:06:23,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 124 transitions, 760 flow [2024-11-19 14:06:23,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 124 transitions, 751 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:23,386 INFO L231 Difference]: Finished difference. Result has 84 places, 102 transitions, 486 flow [2024-11-19 14:06:23,386 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=486, PETRI_PLACES=84, PETRI_TRANSITIONS=102} [2024-11-19 14:06:23,387 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 9 predicate places. [2024-11-19 14:06:23,387 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 102 transitions, 486 flow [2024-11-19 14:06:23,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2024-11-19 14:06:23,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:23,387 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:23,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 14:06:23,388 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-19 14:06:23,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:23,388 INFO L85 PathProgramCache]: Analyzing trace with hash 40062749, now seen corresponding path program 1 times [2024-11-19 14:06:23,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:23,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003372536] [2024-11-19 14:06:23,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:23,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:23,613 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 14:06:23,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:23,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003372536] [2024-11-19 14:06:23,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003372536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:23,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564892590] [2024-11-19 14:06:23,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:23,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:23,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:23,617 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:23,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 14:06:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:23,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:06:23,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:23,765 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 14:06:23,766 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:06:23,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564892590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:23,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:06:23,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-19 14:06:23,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405066385] [2024-11-19 14:06:23,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:23,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:23,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:23,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:23,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 14:06:23,769 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-19 14:06:23,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 102 transitions, 486 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) [2024-11-19 14:06:23,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:23,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-19 14:06:23,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:25,616 INFO L124 PetriNetUnfolderBase]: 16299/24740 cut-off events. [2024-11-19 14:06:25,616 INFO L125 PetriNetUnfolderBase]: For 18134/19927 co-relation queries the response was YES. [2024-11-19 14:06:25,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58687 conditions, 24740 events. 16299/24740 cut-off events. For 18134/19927 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 155336 event pairs, 12973 based on Foata normal form. 1360/21562 useless extension candidates. Maximal degree in co-relation 58663. Up to 21771 conditions per place. [2024-11-19 14:06:25,747 INFO L140 encePairwiseOnDemand]: 84/87 looper letters, 76 selfloop transitions, 1 changer transitions 0/100 dead transitions. [2024-11-19 14:06:25,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 100 transitions, 632 flow [2024-11-19 14:06:25,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:25,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:25,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-11-19 14:06:25,748 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2024-11-19 14:06:25,748 INFO L175 Difference]: Start difference. First operand has 84 places, 102 transitions, 486 flow. Second operand 3 states and 126 transitions. [2024-11-19 14:06:25,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 100 transitions, 632 flow [2024-11-19 14:06:25,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 100 transitions, 616 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-19 14:06:25,761 INFO L231 Difference]: Finished difference. Result has 81 places, 100 transitions, 464 flow [2024-11-19 14:06:25,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=81, PETRI_TRANSITIONS=100} [2024-11-19 14:06:25,761 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2024-11-19 14:06:25,762 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 100 transitions, 464 flow [2024-11-19 14:06:25,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2024-11-19 14:06:25,762 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:25,762 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:25,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 14:06:25,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 14:06:25,963 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-19 14:06:25,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:25,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1771973103, now seen corresponding path program 1 times [2024-11-19 14:06:25,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:25,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911563308] [2024-11-19 14:06:25,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:25,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:26,021 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 14:06:26,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:26,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911563308] [2024-11-19 14:06:26,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911563308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:26,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:26,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:26,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122402028] [2024-11-19 14:06:26,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:26,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:26,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:26,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:26,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:26,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 87 [2024-11-19 14:06:26,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 100 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2024-11-19 14:06:26,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:26,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 87 [2024-11-19 14:06:26,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:29,169 INFO L124 PetriNetUnfolderBase]: 25849/37649 cut-off events. [2024-11-19 14:06:29,169 INFO L125 PetriNetUnfolderBase]: For 19687/22645 co-relation queries the response was YES. [2024-11-19 14:06:29,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89737 conditions, 37649 events. 25849/37649 cut-off events. For 19687/22645 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 221321 event pairs, 16025 based on Foata normal form. 640/32456 useless extension candidates. Maximal degree in co-relation 89713. Up to 27157 conditions per place. [2024-11-19 14:06:29,321 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 101 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2024-11-19 14:06:29,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 121 transitions, 736 flow [2024-11-19 14:06:29,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:29,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:29,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2024-11-19 14:06:29,322 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2024-11-19 14:06:29,322 INFO L175 Difference]: Start difference. First operand has 81 places, 100 transitions, 464 flow. Second operand 3 states and 138 transitions. [2024-11-19 14:06:29,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 121 transitions, 736 flow [2024-11-19 14:06:29,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 121 transitions, 735 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:29,330 INFO L231 Difference]: Finished difference. Result has 84 places, 101 transitions, 489 flow [2024-11-19 14:06:29,331 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=489, PETRI_PLACES=84, PETRI_TRANSITIONS=101} [2024-11-19 14:06:29,331 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 9 predicate places. [2024-11-19 14:06:29,331 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 101 transitions, 489 flow [2024-11-19 14:06:29,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2024-11-19 14:06:29,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:29,332 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:29,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 14:06:29,332 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-19 14:06:29,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:29,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1127113169, now seen corresponding path program 1 times [2024-11-19 14:06:29,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:29,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136808815] [2024-11-19 14:06:29,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:29,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 14:06:29,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:29,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136808815] [2024-11-19 14:06:29,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136808815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:29,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:29,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:29,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830909846] [2024-11-19 14:06:29,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:29,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:29,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:29,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:29,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:29,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-19 14:06:29,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 101 transitions, 489 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-19 14:06:29,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:29,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-19 14:06:29,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:32,966 INFO L124 PetriNetUnfolderBase]: 27356/42140 cut-off events. [2024-11-19 14:06:32,966 INFO L125 PetriNetUnfolderBase]: For 26211/29109 co-relation queries the response was YES. [2024-11-19 14:06:33,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99409 conditions, 42140 events. 27356/42140 cut-off events. For 26211/29109 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 277279 event pairs, 22206 based on Foata normal form. 120/34609 useless extension candidates. Maximal degree in co-relation 99384. Up to 27867 conditions per place. [2024-11-19 14:06:33,186 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 70 selfloop transitions, 6 changer transitions 43/143 dead transitions. [2024-11-19 14:06:33,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 143 transitions, 912 flow [2024-11-19 14:06:33,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:33,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:33,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-11-19 14:06:33,187 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2024-11-19 14:06:33,187 INFO L175 Difference]: Start difference. First operand has 84 places, 101 transitions, 489 flow. Second operand 4 states and 186 transitions. [2024-11-19 14:06:33,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 143 transitions, 912 flow [2024-11-19 14:06:33,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 143 transitions, 898 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:33,202 INFO L231 Difference]: Finished difference. Result has 86 places, 100 transitions, 497 flow [2024-11-19 14:06:33,203 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=497, PETRI_PLACES=86, PETRI_TRANSITIONS=100} [2024-11-19 14:06:33,203 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 11 predicate places. [2024-11-19 14:06:33,203 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 100 transitions, 497 flow [2024-11-19 14:06:33,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-19 14:06:33,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:33,204 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:33,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 14:06:33,204 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-19 14:06:33,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:33,205 INFO L85 PathProgramCache]: Analyzing trace with hash 324349046, now seen corresponding path program 1 times [2024-11-19 14:06:33,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:33,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409741416] [2024-11-19 14:06:33,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:33,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:33,451 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 14:06:33,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:33,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409741416] [2024-11-19 14:06:33,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409741416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:33,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30416361] [2024-11-19 14:06:33,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:33,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:33,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:33,455 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:33,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 14:06:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:33,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:06:33,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:33,647 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 14:06:33,647 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:06:33,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30416361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:33,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:06:33,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-19 14:06:33,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052510144] [2024-11-19 14:06:33,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:33,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:33,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:33,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:33,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 14:06:33,649 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-19 14:06:33,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 100 transitions, 497 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2024-11-19 14:06:33,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:33,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-19 14:06:33,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand