./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:03:35,403 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:03:35,476 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:03:35,481 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:03:35,482 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:03:35,513 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:03:35,514 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:03:35,514 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:03:35,515 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:03:35,515 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:03:35,516 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:03:35,516 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:03:35,516 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:03:35,517 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:03:35,517 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:03:35,517 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:03:35,518 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:03:35,518 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:03:35,518 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:03:35,519 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:03:35,519 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:03:35,520 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:03:35,521 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:03:35,521 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:03:35,521 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:03:35,521 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:03:35,522 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:03:35,522 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:03:35,522 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:03:35,522 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:03:35,523 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:03:35,523 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:03:35,523 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:03:35,523 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:03:35,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:03:35,524 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:03:35,524 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:03:35,524 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:03:35,524 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:03:35,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:03:35,525 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:03:35,525 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:03:35,525 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:03:35,526 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:03:35,526 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 [2024-10-12 00:03:35,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:03:35,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:03:35,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:03:35,803 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:03:35,805 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:03:35,806 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2024-10-12 00:03:37,188 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:03:37,382 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:03:37,383 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2024-10-12 00:03:37,390 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/9d0ec8694/7ecec3937813400cabe86e591176a8b1/FLAG35c2a45c3 [2024-10-12 00:03:37,766 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/9d0ec8694/7ecec3937813400cabe86e591176a8b1 [2024-10-12 00:03:37,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:03:37,771 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:03:37,773 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:03:37,773 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:03:37,779 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:03:37,780 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:03:37" (1/1) ... [2024-10-12 00:03:37,781 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@734c3743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:37, skipping insertion in model container [2024-10-12 00:03:37,781 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:03:37" (1/1) ... [2024-10-12 00:03:37,808 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:03:38,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:03:38,071 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:03:38,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:03:38,125 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:03:38,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:38 WrapperNode [2024-10-12 00:03:38,126 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:03:38,127 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:03:38,127 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:03:38,128 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:03:38,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:38" (1/1) ... [2024-10-12 00:03:38,142 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:38" (1/1) ... [2024-10-12 00:03:38,213 INFO L138 Inliner]: procedures = 22, calls = 32, calls flagged for inlining = 18, calls inlined = 32, statements flattened = 397 [2024-10-12 00:03:38,213 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:03:38,214 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:03:38,214 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:03:38,214 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:03:38,247 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:38" (1/1) ... [2024-10-12 00:03:38,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:38" (1/1) ... [2024-10-12 00:03:38,252 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:38" (1/1) ... [2024-10-12 00:03:38,275 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-12 00:03:38,276 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:38" (1/1) ... [2024-10-12 00:03:38,276 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:38" (1/1) ... [2024-10-12 00:03:38,293 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:38" (1/1) ... [2024-10-12 00:03:38,304 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:38" (1/1) ... [2024-10-12 00:03:38,319 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:38" (1/1) ... [2024-10-12 00:03:38,322 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:38" (1/1) ... [2024-10-12 00:03:38,328 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:03:38,332 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:03:38,332 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:03:38,332 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:03:38,333 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:38" (1/1) ... [2024-10-12 00:03:38,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:03:38,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:03:38,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 00:03:38,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 00:03:38,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:03:38,407 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:03:38,407 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:03:38,407 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:03:38,407 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:03:38,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:03:38,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 00:03:38,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-12 00:03:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-12 00:03:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-12 00:03:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:03:38,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:03:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-12 00:03:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-12 00:03:38,411 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-12 00:03:38,506 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:03:38,508 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:03:39,138 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:03:39,138 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:03:39,531 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:03:39,532 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-12 00:03:39,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:03:39 BoogieIcfgContainer [2024-10-12 00:03:39,533 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:03:39,535 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:03:39,535 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:03:39,539 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:03:39,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:03:37" (1/3) ... [2024-10-12 00:03:39,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47affda0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:03:39, skipping insertion in model container [2024-10-12 00:03:39,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:38" (2/3) ... [2024-10-12 00:03:39,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47affda0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:03:39, skipping insertion in model container [2024-10-12 00:03:39,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:03:39" (3/3) ... [2024-10-12 00:03:39,542 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2024-10-12 00:03:39,558 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:03:39,559 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2024-10-12 00:03:39,559 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:03:39,649 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-12 00:03:39,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 180 transitions, 374 flow [2024-10-12 00:03:39,762 INFO L124 PetriNetUnfolderBase]: 21/178 cut-off events. [2024-10-12 00:03:39,762 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-12 00:03:39,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 178 events. 21/178 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 838 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 169. Up to 2 conditions per place. [2024-10-12 00:03:39,769 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 180 transitions, 374 flow [2024-10-12 00:03:39,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 176 transitions, 361 flow [2024-10-12 00:03:39,790 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:03:39,799 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;@49811cac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:03:39,799 INFO L334 AbstractCegarLoop]: Starting to check reachability of 108 error locations. [2024-10-12 00:03:39,803 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:03:39,804 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-12 00:03:39,804 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:03:39,804 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:39,805 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-12 00:03:39,805 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-10-12 00:03:39,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:39,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1245782, now seen corresponding path program 1 times [2024-10-12 00:03:39,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:39,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024799925] [2024-10-12 00:03:39,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:39,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:40,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:40,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:40,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024799925] [2024-10-12 00:03:40,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024799925] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:40,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:40,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:03:40,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607683030] [2024-10-12 00:03:40,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:40,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:40,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:40,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:40,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:40,191 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 180 [2024-10-12 00:03:40,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 176 transitions, 361 flow. Second operand has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 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) [2024-10-12 00:03:40,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:40,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 180 [2024-10-12 00:03:40,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:41,055 INFO L124 PetriNetUnfolderBase]: 2273/5775 cut-off events. [2024-10-12 00:03:41,056 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-10-12 00:03:41,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9099 conditions, 5775 events. 2273/5775 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 53618 event pairs, 1252 based on Foata normal form. 1/4394 useless extension candidates. Maximal degree in co-relation 8938. Up to 3254 conditions per place. [2024-10-12 00:03:41,096 INFO L140 encePairwiseOnDemand]: 174/180 looper letters, 60 selfloop transitions, 4 changer transitions 0/179 dead transitions. [2024-10-12 00:03:41,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 179 transitions, 495 flow [2024-10-12 00:03:41,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:41,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:41,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 534 transitions. [2024-10-12 00:03:41,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7416666666666667 [2024-10-12 00:03:41,113 INFO L175 Difference]: Start difference. First operand has 162 places, 176 transitions, 361 flow. Second operand 4 states and 534 transitions. [2024-10-12 00:03:41,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 179 transitions, 495 flow [2024-10-12 00:03:41,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 179 transitions, 490 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:03:41,122 INFO L231 Difference]: Finished difference. Result has 164 places, 179 transitions, 385 flow [2024-10-12 00:03:41,124 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=385, PETRI_PLACES=164, PETRI_TRANSITIONS=179} [2024-10-12 00:03:41,128 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 2 predicate places. [2024-10-12 00:03:41,128 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 179 transitions, 385 flow [2024-10-12 00:03:41,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 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) [2024-10-12 00:03:41,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:41,129 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-12 00:03:41,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:03:41,129 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-10-12 00:03:41,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:41,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1540361593, now seen corresponding path program 1 times [2024-10-12 00:03:41,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:41,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412381813] [2024-10-12 00:03:41,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:41,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:41,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:41,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:41,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412381813] [2024-10-12 00:03:41,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412381813] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:03:41,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665246342] [2024-10-12 00:03:41,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:41,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:03:41,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:03:41,314 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:03:41,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 00:03:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:41,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:03:41,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:03:41,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:41,477 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:03:41,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665246342] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:41,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:03:41,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-12 00:03:41,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479765913] [2024-10-12 00:03:41,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:41,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:03:41,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:41,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:03:41,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:03:41,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 180 [2024-10-12 00:03:41,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 179 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 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) [2024-10-12 00:03:41,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:41,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 180 [2024-10-12 00:03:41,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:42,191 INFO L124 PetriNetUnfolderBase]: 2273/5774 cut-off events. [2024-10-12 00:03:42,191 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-12 00:03:42,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9087 conditions, 5774 events. 2273/5774 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 53604 event pairs, 1252 based on Foata normal form. 1/4394 useless extension candidates. Maximal degree in co-relation 9060. Up to 3249 conditions per place. [2024-10-12 00:03:42,233 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 56 selfloop transitions, 7 changer transitions 0/178 dead transitions. [2024-10-12 00:03:42,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 178 transitions, 507 flow [2024-10-12 00:03:42,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:03:42,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:03:42,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 766 transitions. [2024-10-12 00:03:42,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7092592592592593 [2024-10-12 00:03:42,238 INFO L175 Difference]: Start difference. First operand has 164 places, 179 transitions, 385 flow. Second operand 6 states and 766 transitions. [2024-10-12 00:03:42,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 178 transitions, 507 flow [2024-10-12 00:03:42,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 178 transitions, 504 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:03:42,242 INFO L231 Difference]: Finished difference. Result has 167 places, 178 transitions, 392 flow [2024-10-12 00:03:42,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=392, PETRI_PLACES=167, PETRI_TRANSITIONS=178} [2024-10-12 00:03:42,243 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 5 predicate places. [2024-10-12 00:03:42,244 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 178 transitions, 392 flow [2024-10-12 00:03:42,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 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) [2024-10-12 00:03:42,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:42,245 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-12 00:03:42,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 00:03:42,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:03:42,450 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-10-12 00:03:42,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:42,451 INFO L85 PathProgramCache]: Analyzing trace with hash -506567868, now seen corresponding path program 1 times [2024-10-12 00:03:42,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:42,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4756422] [2024-10-12 00:03:42,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:42,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:42,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:42,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:42,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4756422] [2024-10-12 00:03:42,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4756422] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:03:42,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265951764] [2024-10-12 00:03:42,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:42,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:03:42,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:03:42,563 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:03:42,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 00:03:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:42,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:03:42,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:03:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:42,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:03:42,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:42,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265951764] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:03:42,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:03:42,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-12 00:03:42,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443241923] [2024-10-12 00:03:42,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:03:42,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:03:42,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:42,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:03:42,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:03:42,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 180 [2024-10-12 00:03:42,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 178 transitions, 392 flow. Second operand has 12 states, 12 states have (on average 118.08333333333333) internal successors, (1417), 12 states have internal predecessors, (1417), 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) [2024-10-12 00:03:42,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:42,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 180 [2024-10-12 00:03:42,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:43,446 INFO L124 PetriNetUnfolderBase]: 2276/5786 cut-off events. [2024-10-12 00:03:43,447 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-10-12 00:03:43,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9131 conditions, 5786 events. 2276/5786 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 53709 event pairs, 1252 based on Foata normal form. 3/4406 useless extension candidates. Maximal degree in co-relation 9061. Up to 3256 conditions per place. [2024-10-12 00:03:43,489 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 59 selfloop transitions, 13 changer transitions 0/187 dead transitions. [2024-10-12 00:03:43,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 187 transitions, 590 flow [2024-10-12 00:03:43,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:03:43,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:03:43,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1245 transitions. [2024-10-12 00:03:43,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2024-10-12 00:03:43,494 INFO L175 Difference]: Start difference. First operand has 167 places, 178 transitions, 392 flow. Second operand 10 states and 1245 transitions. [2024-10-12 00:03:43,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 187 transitions, 590 flow [2024-10-12 00:03:43,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 187 transitions, 544 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-10-12 00:03:43,501 INFO L231 Difference]: Finished difference. Result has 174 places, 187 transitions, 444 flow [2024-10-12 00:03:43,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=444, PETRI_PLACES=174, PETRI_TRANSITIONS=187} [2024-10-12 00:03:43,503 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 12 predicate places. [2024-10-12 00:03:43,504 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 187 transitions, 444 flow [2024-10-12 00:03:43,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 118.08333333333333) internal successors, (1417), 12 states have internal predecessors, (1417), 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) [2024-10-12 00:03:43,505 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:43,505 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:43,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 00:03:43,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:03:43,706 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-10-12 00:03:43,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:43,707 INFO L85 PathProgramCache]: Analyzing trace with hash -168260666, now seen corresponding path program 1 times [2024-10-12 00:03:43,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:43,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746301184] [2024-10-12 00:03:43,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:43,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:43,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:43,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:43,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746301184] [2024-10-12 00:03:43,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746301184] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:43,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:43,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:43,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016594749] [2024-10-12 00:03:43,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:43,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:43,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:43,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:43,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:43,856 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 180 [2024-10-12 00:03:43,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 187 transitions, 444 flow. Second operand has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 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) [2024-10-12 00:03:43,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:43,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 180 [2024-10-12 00:03:43,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:45,023 INFO L124 PetriNetUnfolderBase]: 5324/11288 cut-off events. [2024-10-12 00:03:45,024 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-10-12 00:03:45,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19267 conditions, 11288 events. 5324/11288 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 104859 event pairs, 1055 based on Foata normal form. 416/9336 useless extension candidates. Maximal degree in co-relation 19233. Up to 3742 conditions per place. [2024-10-12 00:03:45,109 INFO L140 encePairwiseOnDemand]: 148/180 looper letters, 143 selfloop transitions, 20 changer transitions 0/255 dead transitions. [2024-10-12 00:03:45,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 255 transitions, 910 flow [2024-10-12 00:03:45,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:45,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:45,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 543 transitions. [2024-10-12 00:03:45,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7541666666666667 [2024-10-12 00:03:45,113 INFO L175 Difference]: Start difference. First operand has 174 places, 187 transitions, 444 flow. Second operand 4 states and 543 transitions. [2024-10-12 00:03:45,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 255 transitions, 910 flow [2024-10-12 00:03:45,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 255 transitions, 899 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-12 00:03:45,124 INFO L231 Difference]: Finished difference. Result has 174 places, 195 transitions, 569 flow [2024-10-12 00:03:45,125 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=569, PETRI_PLACES=174, PETRI_TRANSITIONS=195} [2024-10-12 00:03:45,126 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 12 predicate places. [2024-10-12 00:03:45,126 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 195 transitions, 569 flow [2024-10-12 00:03:45,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 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) [2024-10-12 00:03:45,127 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:45,127 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:45,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 00:03:45,128 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-10-12 00:03:45,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:45,128 INFO L85 PathProgramCache]: Analyzing trace with hash -921111943, now seen corresponding path program 1 times [2024-10-12 00:03:45,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:45,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437337] [2024-10-12 00:03:45,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:45,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:45,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:45,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:45,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437337] [2024-10-12 00:03:45,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437337] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:45,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:45,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:45,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391355136] [2024-10-12 00:03:45,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:45,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:45,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:45,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:45,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:45,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 180 [2024-10-12 00:03:45,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 195 transitions, 569 flow. Second operand has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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) [2024-10-12 00:03:45,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:45,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 180 [2024-10-12 00:03:45,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:46,098 INFO L124 PetriNetUnfolderBase]: 3212/8400 cut-off events. [2024-10-12 00:03:46,098 INFO L125 PetriNetUnfolderBase]: For 2038/2248 co-relation queries the response was YES. [2024-10-12 00:03:46,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15296 conditions, 8400 events. 3212/8400 cut-off events. For 2038/2248 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 83385 event pairs, 1877 based on Foata normal form. 114/6783 useless extension candidates. Maximal degree in co-relation 15260. Up to 3379 conditions per place. [2024-10-12 00:03:46,187 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 105 selfloop transitions, 4 changer transitions 0/225 dead transitions. [2024-10-12 00:03:46,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 225 transitions, 854 flow [2024-10-12 00:03:46,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:46,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:46,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 569 transitions. [2024-10-12 00:03:46,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7902777777777777 [2024-10-12 00:03:46,190 INFO L175 Difference]: Start difference. First operand has 174 places, 195 transitions, 569 flow. Second operand 4 states and 569 transitions. [2024-10-12 00:03:46,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 225 transitions, 854 flow [2024-10-12 00:03:46,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 225 transitions, 854 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:03:46,209 INFO L231 Difference]: Finished difference. Result has 179 places, 196 transitions, 592 flow [2024-10-12 00:03:46,209 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=592, PETRI_PLACES=179, PETRI_TRANSITIONS=196} [2024-10-12 00:03:46,211 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 17 predicate places. [2024-10-12 00:03:46,212 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 196 transitions, 592 flow [2024-10-12 00:03:46,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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) [2024-10-12 00:03:46,212 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:46,212 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:46,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 00:03:46,213 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-10-12 00:03:46,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:46,213 INFO L85 PathProgramCache]: Analyzing trace with hash -921080133, now seen corresponding path program 1 times [2024-10-12 00:03:46,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:46,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738562660] [2024-10-12 00:03:46,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:46,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:46,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:46,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:46,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738562660] [2024-10-12 00:03:46,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738562660] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:46,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:46,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:46,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641213714] [2024-10-12 00:03:46,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:46,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:46,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:46,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:46,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:46,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2024-10-12 00:03:46,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 196 transitions, 592 flow. Second operand has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 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) [2024-10-12 00:03:46,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:46,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2024-10-12 00:03:46,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:48,770 INFO L124 PetriNetUnfolderBase]: 9582/21426 cut-off events. [2024-10-12 00:03:48,771 INFO L125 PetriNetUnfolderBase]: For 7184/7268 co-relation queries the response was YES. [2024-10-12 00:03:48,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41950 conditions, 21426 events. 9582/21426 cut-off events. For 7184/7268 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 210412 event pairs, 1409 based on Foata normal form. 292/18493 useless extension candidates. Maximal degree in co-relation 41912. Up to 6372 conditions per place. [2024-10-12 00:03:48,946 INFO L140 encePairwiseOnDemand]: 161/180 looper letters, 203 selfloop transitions, 32 changer transitions 0/335 dead transitions. [2024-10-12 00:03:48,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 335 transitions, 1457 flow [2024-10-12 00:03:48,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:03:48,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:03:48,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 719 transitions. [2024-10-12 00:03:48,950 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7988888888888889 [2024-10-12 00:03:48,950 INFO L175 Difference]: Start difference. First operand has 179 places, 196 transitions, 592 flow. Second operand 5 states and 719 transitions. [2024-10-12 00:03:48,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 335 transitions, 1457 flow [2024-10-12 00:03:48,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 335 transitions, 1454 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:03:48,977 INFO L231 Difference]: Finished difference. Result has 186 places, 218 transitions, 859 flow [2024-10-12 00:03:48,977 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=859, PETRI_PLACES=186, PETRI_TRANSITIONS=218} [2024-10-12 00:03:48,978 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 24 predicate places. [2024-10-12 00:03:48,978 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 218 transitions, 859 flow [2024-10-12 00:03:48,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 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) [2024-10-12 00:03:48,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:48,979 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:48,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 00:03:48,980 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-10-12 00:03:48,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:48,980 INFO L85 PathProgramCache]: Analyzing trace with hash -910619801, now seen corresponding path program 1 times [2024-10-12 00:03:48,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:48,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679540229] [2024-10-12 00:03:48,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:48,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:49,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:49,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:49,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679540229] [2024-10-12 00:03:49,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679540229] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:49,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:49,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:49,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688038496] [2024-10-12 00:03:49,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:49,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:49,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:49,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:49,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:49,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 180 [2024-10-12 00:03:49,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 218 transitions, 859 flow. Second operand has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2024-10-12 00:03:49,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:49,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 180 [2024-10-12 00:03:49,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:52,220 INFO L124 PetriNetUnfolderBase]: 15194/33042 cut-off events. [2024-10-12 00:03:52,220 INFO L125 PetriNetUnfolderBase]: For 31170/32790 co-relation queries the response was YES. [2024-10-12 00:03:52,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72989 conditions, 33042 events. 15194/33042 cut-off events. For 31170/32790 co-relation queries the response was YES. Maximal size of possible extension queue 964. Compared 340809 event pairs, 4101 based on Foata normal form. 1830/29665 useless extension candidates. Maximal degree in co-relation 72945. Up to 9920 conditions per place. [2024-10-12 00:03:52,523 INFO L140 encePairwiseOnDemand]: 148/180 looper letters, 222 selfloop transitions, 20 changer transitions 0/338 dead transitions. [2024-10-12 00:03:52,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 338 transitions, 2069 flow [2024-10-12 00:03:52,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:52,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:52,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 541 transitions. [2024-10-12 00:03:52,526 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7513888888888889 [2024-10-12 00:03:52,526 INFO L175 Difference]: Start difference. First operand has 186 places, 218 transitions, 859 flow. Second operand 4 states and 541 transitions. [2024-10-12 00:03:52,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 338 transitions, 2069 flow [2024-10-12 00:03:52,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 338 transitions, 2045 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-10-12 00:03:52,628 INFO L231 Difference]: Finished difference. Result has 188 places, 226 transitions, 987 flow [2024-10-12 00:03:52,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=987, PETRI_PLACES=188, PETRI_TRANSITIONS=226} [2024-10-12 00:03:52,629 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 26 predicate places. [2024-10-12 00:03:52,629 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 226 transitions, 987 flow [2024-10-12 00:03:52,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2024-10-12 00:03:52,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:52,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:52,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 00:03:52,630 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-10-12 00:03:52,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:52,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1511256591, now seen corresponding path program 1 times [2024-10-12 00:03:52,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:52,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430232903] [2024-10-12 00:03:52,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:52,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:52,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:52,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:52,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430232903] [2024-10-12 00:03:52,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430232903] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:52,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:52,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:52,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670964251] [2024-10-12 00:03:52,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:52,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:52,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:52,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:52,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:52,765 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2024-10-12 00:03:52,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 226 transitions, 987 flow. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 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) [2024-10-12 00:03:52,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:52,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2024-10-12 00:03:52,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:55,496 INFO L124 PetriNetUnfolderBase]: 12097/28436 cut-off events. [2024-10-12 00:03:55,496 INFO L125 PetriNetUnfolderBase]: For 29869/31183 co-relation queries the response was YES. [2024-10-12 00:03:55,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67007 conditions, 28436 events. 12097/28436 cut-off events. For 29869/31183 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 301801 event pairs, 2267 based on Foata normal form. 880/25474 useless extension candidates. Maximal degree in co-relation 66960. Up to 8600 conditions per place. [2024-10-12 00:03:55,949 INFO L140 encePairwiseOnDemand]: 164/180 looper letters, 226 selfloop transitions, 33 changer transitions 0/359 dead transitions. [2024-10-12 00:03:55,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 359 transitions, 2042 flow [2024-10-12 00:03:55,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:03:55,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:03:55,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 703 transitions. [2024-10-12 00:03:55,953 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7811111111111111 [2024-10-12 00:03:55,953 INFO L175 Difference]: Start difference. First operand has 188 places, 226 transitions, 987 flow. Second operand 5 states and 703 transitions. [2024-10-12 00:03:55,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 359 transitions, 2042 flow [2024-10-12 00:03:56,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 359 transitions, 2042 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:03:56,123 INFO L231 Difference]: Finished difference. Result has 192 places, 230 transitions, 1065 flow [2024-10-12 00:03:56,124 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1065, PETRI_PLACES=192, PETRI_TRANSITIONS=230} [2024-10-12 00:03:56,125 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 30 predicate places. [2024-10-12 00:03:56,125 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 230 transitions, 1065 flow [2024-10-12 00:03:56,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 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) [2024-10-12 00:03:56,127 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:56,127 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:56,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 00:03:56,128 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-10-12 00:03:56,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:56,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1835558730, now seen corresponding path program 1 times [2024-10-12 00:03:56,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:56,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701013483] [2024-10-12 00:03:56,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:56,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:56,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:56,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:56,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701013483] [2024-10-12 00:03:56,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701013483] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:56,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:56,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:56,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933200464] [2024-10-12 00:03:56,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:56,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:56,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:56,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:56,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:56,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 180 [2024-10-12 00:03:56,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 230 transitions, 1065 flow. Second operand has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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) [2024-10-12 00:03:56,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:56,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 180 [2024-10-12 00:03:56,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:58,455 INFO L124 PetriNetUnfolderBase]: 9581/24590 cut-off events. [2024-10-12 00:03:58,455 INFO L125 PetriNetUnfolderBase]: For 27547/28564 co-relation queries the response was YES. [2024-10-12 00:03:58,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57274 conditions, 24590 events. 9581/24590 cut-off events. For 27547/28564 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 269098 event pairs, 5519 based on Foata normal form. 600/21624 useless extension candidates. Maximal degree in co-relation 57225. Up to 10295 conditions per place. [2024-10-12 00:03:58,786 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 159 selfloop transitions, 4 changer transitions 0/287 dead transitions. [2024-10-12 00:03:58,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 287 transitions, 1755 flow [2024-10-12 00:03:58,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:58,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:58,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 570 transitions. [2024-10-12 00:03:58,789 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2024-10-12 00:03:58,790 INFO L175 Difference]: Start difference. First operand has 192 places, 230 transitions, 1065 flow. Second operand 4 states and 570 transitions. [2024-10-12 00:03:58,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 287 transitions, 1755 flow [2024-10-12 00:03:58,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 287 transitions, 1755 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:03:58,931 INFO L231 Difference]: Finished difference. Result has 197 places, 231 transitions, 1088 flow [2024-10-12 00:03:58,932 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1088, PETRI_PLACES=197, PETRI_TRANSITIONS=231} [2024-10-12 00:03:58,932 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 35 predicate places. [2024-10-12 00:03:58,932 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 231 transitions, 1088 flow [2024-10-12 00:03:58,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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) [2024-10-12 00:03:58,933 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:58,933 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:58,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 00:03:58,934 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-10-12 00:03:58,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:58,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1835590540, now seen corresponding path program 1 times [2024-10-12 00:03:58,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:58,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499717627] [2024-10-12 00:03:58,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:58,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:58,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:58,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:58,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499717627] [2024-10-12 00:03:58,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499717627] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:58,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:58,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:58,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594573334] [2024-10-12 00:03:58,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:58,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:58,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:58,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:58,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:59,057 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2024-10-12 00:03:59,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 231 transitions, 1088 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 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) [2024-10-12 00:03:59,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:59,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2024-10-12 00:03:59,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:04:05,892 INFO L124 PetriNetUnfolderBase]: 25043/59161 cut-off events. [2024-10-12 00:04:05,893 INFO L125 PetriNetUnfolderBase]: For 75297/78088 co-relation queries the response was YES. [2024-10-12 00:04:06,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141350 conditions, 59161 events. 25043/59161 cut-off events. For 75297/78088 co-relation queries the response was YES. Maximal size of possible extension queue 1602. Compared 677683 event pairs, 3944 based on Foata normal form. 2224/54096 useless extension candidates. Maximal degree in co-relation 141299. Up to 16392 conditions per place. [2024-10-12 00:04:06,461 INFO L140 encePairwiseOnDemand]: 161/180 looper letters, 305 selfloop transitions, 32 changer transitions 0/445 dead transitions. [2024-10-12 00:04:06,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 445 transitions, 3041 flow [2024-10-12 00:04:06,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:04:06,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:04:06,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 715 transitions. [2024-10-12 00:04:06,463 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7944444444444444 [2024-10-12 00:04:06,464 INFO L175 Difference]: Start difference. First operand has 197 places, 231 transitions, 1088 flow. Second operand 5 states and 715 transitions. [2024-10-12 00:04:06,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 445 transitions, 3041 flow [2024-10-12 00:04:06,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 445 transitions, 3038 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:04:06,655 INFO L231 Difference]: Finished difference. Result has 204 places, 253 transitions, 1355 flow [2024-10-12 00:04:06,656 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1355, PETRI_PLACES=204, PETRI_TRANSITIONS=253} [2024-10-12 00:04:06,656 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 42 predicate places. [2024-10-12 00:04:06,657 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 253 transitions, 1355 flow [2024-10-12 00:04:06,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 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) [2024-10-12 00:04:06,657 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:04:06,657 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:04:06,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 00:04:06,658 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2024-10-12 00:04:06,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:04:06,658 INFO L85 PathProgramCache]: Analyzing trace with hash -395685535, now seen corresponding path program 1 times [2024-10-12 00:04:06,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:04:06,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35816149] [2024-10-12 00:04:06,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:04:06,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:04:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:04:06,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:04:06,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:04:06,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35816149] [2024-10-12 00:04:06,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35816149] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:04:06,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:04:06,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:04:06,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058601178] [2024-10-12 00:04:06,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:04:06,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:04:06,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:04:06,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:04:06,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:04:06,834 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2024-10-12 00:04:06,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 253 transitions, 1355 flow. Second operand has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 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) [2024-10-12 00:04:06,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:04:06,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2024-10-12 00:04:06,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand