./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:13:38,235 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:13:38,294 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:13:38,298 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:13:38,298 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:13:38,330 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:13:38,331 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:13:38,331 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:13:38,331 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:13:38,332 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:13:38,332 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:13:38,334 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:13:38,335 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:13:38,336 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:13:38,336 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:13:38,337 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:13:38,337 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:13:38,337 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:13:38,341 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:13:38,341 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:13:38,341 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:13:38,342 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:13:38,342 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:13:38,342 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:13:38,342 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:13:38,343 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:13:38,343 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:13:38,343 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:13:38,343 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:13:38,344 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:13:38,344 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:13:38,344 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:13:38,344 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:13:38,344 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:13:38,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:13:38,345 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:13:38,345 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:13:38,346 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:13:38,346 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:13:38,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:13:38,346 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:13:38,347 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:13:38,347 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:13:38,347 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:13:38,347 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e [2024-11-09 15:13:38,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:13:38,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:13:38,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:13:38,582 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:13:38,582 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:13:38,583 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2024-11-09 15:13:40,049 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:13:40,230 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:13:40,231 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2024-11-09 15:13:40,238 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5af381561/cb47eed371fa443d82dba86dc0f32e47/FLAGfc8e4de0d [2024-11-09 15:13:40,250 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5af381561/cb47eed371fa443d82dba86dc0f32e47 [2024-11-09 15:13:40,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:13:40,253 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:13:40,254 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:13:40,254 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:13:40,260 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:13:40,260 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:13:40" (1/1) ... [2024-11-09 15:13:40,261 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@211212de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:40, skipping insertion in model container [2024-11-09 15:13:40,261 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:13:40" (1/1) ... [2024-11-09 15:13:40,287 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:13:40,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:13:40,520 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:13:40,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:13:40,561 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:13:40,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:40 WrapperNode [2024-11-09 15:13:40,561 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:13:40,562 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:13:40,562 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:13:40,563 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:13:40,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:40" (1/1) ... [2024-11-09 15:13:40,578 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:40" (1/1) ... [2024-11-09 15:13:40,612 INFO L138 Inliner]: procedures = 24, calls = 32, calls flagged for inlining = 14, calls inlined = 20, statements flattened = 296 [2024-11-09 15:13:40,613 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:13:40,614 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:13:40,614 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:13:40,614 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:13:40,623 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:40" (1/1) ... [2024-11-09 15:13:40,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:40" (1/1) ... [2024-11-09 15:13:40,628 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:40" (1/1) ... [2024-11-09 15:13:40,647 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 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]. [2024-11-09 15:13:40,647 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:40" (1/1) ... [2024-11-09 15:13:40,648 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:40" (1/1) ... [2024-11-09 15:13:40,655 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:40" (1/1) ... [2024-11-09 15:13:40,659 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:40" (1/1) ... [2024-11-09 15:13:40,660 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:40" (1/1) ... [2024-11-09 15:13:40,662 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:40" (1/1) ... [2024-11-09 15:13:40,665 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:13:40,666 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:13:40,666 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:13:40,666 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:13:40,667 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:40" (1/1) ... [2024-11-09 15:13:40,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:13:40,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:40,701 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 15:13:40,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 15:13:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:13:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:13:40,738 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:13:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:13:40,738 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:13:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 15:13:40,738 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 15:13:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:13:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:13:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:13:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:13:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 15:13:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 15:13:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:13:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:13:40,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:13:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:13:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:13:40,741 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:13:40,843 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:13:40,846 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:13:41,398 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:13:41,399 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:13:41,848 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:13:41,849 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 15:13:41,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:13:41 BoogieIcfgContainer [2024-11-09 15:13:41,850 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:13:41,852 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:13:41,852 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:13:41,856 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:13:41,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:13:40" (1/3) ... [2024-11-09 15:13:41,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131167ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:13:41, skipping insertion in model container [2024-11-09 15:13:41,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:40" (2/3) ... [2024-11-09 15:13:41,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131167ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:13:41, skipping insertion in model container [2024-11-09 15:13:41,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:13:41" (3/3) ... [2024-11-09 15:13:41,859 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2024-11-09 15:13:41,877 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:13:41,877 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2024-11-09 15:13:41,877 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:13:42,033 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 15:13:42,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 117 transitions, 255 flow [2024-11-09 15:13:42,122 INFO L124 PetriNetUnfolderBase]: 11/114 cut-off events. [2024-11-09 15:13:42,123 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 15:13:42,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 114 events. 11/114 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 451 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2024-11-09 15:13:42,128 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 117 transitions, 255 flow [2024-11-09 15:13:42,135 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 111 transitions, 240 flow [2024-11-09 15:13:42,146 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:13:42,155 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;@31b30cfa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:13:42,155 INFO L334 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2024-11-09 15:13:42,158 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:13:42,158 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:13:42,158 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:13:42,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:42,159 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:13:42,159 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2024-11-09 15:13:42,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:42,165 INFO L85 PathProgramCache]: Analyzing trace with hash 952881, now seen corresponding path program 1 times [2024-11-09 15:13:42,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:42,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603781048] [2024-11-09 15:13:42,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:42,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:42,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:42,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603781048] [2024-11-09 15:13:42,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603781048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:42,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:42,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:13:42,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780436240] [2024-11-09 15:13:42,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:42,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:13:42,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:42,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:13:42,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:13:42,549 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 117 [2024-11-09 15:13:42,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 111 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:42,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:42,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 117 [2024-11-09 15:13:42,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:44,739 INFO L124 PetriNetUnfolderBase]: 9585/16787 cut-off events. [2024-11-09 15:13:44,739 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2024-11-09 15:13:44,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30072 conditions, 16787 events. 9585/16787 cut-off events. For 469/469 co-relation queries the response was YES. Maximal size of possible extension queue 924. Compared 140542 event pairs, 7130 based on Foata normal form. 1/12508 useless extension candidates. Maximal degree in co-relation 29022. Up to 12874 conditions per place. [2024-11-09 15:13:44,886 INFO L140 encePairwiseOnDemand]: 103/117 looper letters, 50 selfloop transitions, 4 changer transitions 0/106 dead transitions. [2024-11-09 15:13:44,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 106 transitions, 338 flow [2024-11-09 15:13:44,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:13:44,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:13:44,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 284 transitions. [2024-11-09 15:13:44,903 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6068376068376068 [2024-11-09 15:13:44,905 INFO L175 Difference]: Start difference. First operand has 111 places, 111 transitions, 240 flow. Second operand 4 states and 284 transitions. [2024-11-09 15:13:44,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 106 transitions, 338 flow [2024-11-09 15:13:44,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 106 transitions, 326 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 15:13:44,924 INFO L231 Difference]: Finished difference. Result has 102 places, 106 transitions, 241 flow [2024-11-09 15:13:44,926 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=102, PETRI_TRANSITIONS=106} [2024-11-09 15:13:44,932 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, -9 predicate places. [2024-11-09 15:13:44,933 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 106 transitions, 241 flow [2024-11-09 15:13:44,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:44,933 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:44,934 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:13:44,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:13:44,934 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2024-11-09 15:13:44,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:44,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1676461518, now seen corresponding path program 1 times [2024-11-09 15:13:44,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:44,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813608174] [2024-11-09 15:13:44,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:44,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:45,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:45,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:45,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813608174] [2024-11-09 15:13:45,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813608174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:45,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244681261] [2024-11-09 15:13:45,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:45,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:45,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:45,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:13:45,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:13:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:45,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:13:45,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:45,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:45,271 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:13:45,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244681261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:45,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:13:45,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:13:45,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489178165] [2024-11-09 15:13:45,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:45,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:13:45,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:45,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:13:45,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:13:45,284 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 117 [2024-11-09 15:13:45,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 106 transitions, 241 flow. Second operand has 6 states, 6 states have (on average 55.833333333333336) internal successors, (335), 6 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:45,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:45,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 117 [2024-11-09 15:13:45,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:47,169 INFO L124 PetriNetUnfolderBase]: 9585/16786 cut-off events. [2024-11-09 15:13:47,171 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-11-09 15:13:47,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29813 conditions, 16786 events. 9585/16786 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 904. Compared 140250 event pairs, 7130 based on Foata normal form. 1/12508 useless extension candidates. Maximal degree in co-relation 29786. Up to 12869 conditions per place. [2024-11-09 15:13:47,316 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 46 selfloop transitions, 7 changer transitions 0/105 dead transitions. [2024-11-09 15:13:47,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 105 transitions, 343 flow [2024-11-09 15:13:47,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:13:47,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:13:47,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 384 transitions. [2024-11-09 15:13:47,319 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5470085470085471 [2024-11-09 15:13:47,320 INFO L175 Difference]: Start difference. First operand has 102 places, 106 transitions, 241 flow. Second operand 6 states and 384 transitions. [2024-11-09 15:13:47,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 105 transitions, 343 flow [2024-11-09 15:13:47,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 105 transitions, 340 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:13:47,323 INFO L231 Difference]: Finished difference. Result has 105 places, 105 transitions, 248 flow [2024-11-09 15:13:47,323 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=248, PETRI_PLACES=105, PETRI_TRANSITIONS=105} [2024-11-09 15:13:47,324 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, -6 predicate places. [2024-11-09 15:13:47,324 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 105 transitions, 248 flow [2024-11-09 15:13:47,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.833333333333336) internal successors, (335), 6 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:47,325 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:47,325 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:13:47,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 15:13:47,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:47,527 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2024-11-09 15:13:47,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:47,528 INFO L85 PathProgramCache]: Analyzing trace with hash -430698467, now seen corresponding path program 1 times [2024-11-09 15:13:47,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:47,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53777442] [2024-11-09 15:13:47,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:47,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:47,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:47,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:47,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53777442] [2024-11-09 15:13:47,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53777442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:47,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062208097] [2024-11-09 15:13:47,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:47,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:47,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:47,725 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:13:47,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:13:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:47,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:13:47,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:47,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:47,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:47,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062208097] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:47,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:47,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:13:47,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261170393] [2024-11-09 15:13:47,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:47,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:13:47,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:47,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:13:47,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:13:47,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 117 [2024-11-09 15:13:47,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 105 transitions, 248 flow. Second operand has 12 states, 12 states have (on average 56.083333333333336) internal successors, (673), 12 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:47,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:47,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 117 [2024-11-09 15:13:47,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:49,607 INFO L124 PetriNetUnfolderBase]: 9588/16798 cut-off events. [2024-11-09 15:13:49,607 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2024-11-09 15:13:49,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29857 conditions, 16798 events. 9588/16798 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 904. Compared 140331 event pairs, 7130 based on Foata normal form. 3/12520 useless extension candidates. Maximal degree in co-relation 29787. Up to 12876 conditions per place. [2024-11-09 15:13:49,725 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 49 selfloop transitions, 13 changer transitions 0/114 dead transitions. [2024-11-09 15:13:49,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 114 transitions, 426 flow [2024-11-09 15:13:49,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:13:49,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:13:49,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 615 transitions. [2024-11-09 15:13:49,728 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5256410256410257 [2024-11-09 15:13:49,729 INFO L175 Difference]: Start difference. First operand has 105 places, 105 transitions, 248 flow. Second operand 10 states and 615 transitions. [2024-11-09 15:13:49,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 114 transitions, 426 flow [2024-11-09 15:13:49,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 114 transitions, 380 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-09 15:13:49,734 INFO L231 Difference]: Finished difference. Result has 112 places, 114 transitions, 300 flow [2024-11-09 15:13:49,735 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=300, PETRI_PLACES=112, PETRI_TRANSITIONS=114} [2024-11-09 15:13:49,737 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, 1 predicate places. [2024-11-09 15:13:49,737 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 114 transitions, 300 flow [2024-11-09 15:13:49,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 56.083333333333336) internal successors, (673), 12 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:49,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:49,738 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:49,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 15:13:49,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 15:13:49,943 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2024-11-09 15:13:49,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:49,943 INFO L85 PathProgramCache]: Analyzing trace with hash -238172667, now seen corresponding path program 1 times [2024-11-09 15:13:49,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:49,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743197542] [2024-11-09 15:13:49,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:49,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:50,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:50,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:50,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743197542] [2024-11-09 15:13:50,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743197542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:50,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:50,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:13:50,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365414544] [2024-11-09 15:13:50,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:50,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:13:50,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:50,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:13:50,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:13:50,040 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 117 [2024-11-09 15:13:50,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 114 transitions, 300 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:50,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:50,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 117 [2024-11-09 15:13:50,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:52,195 INFO L124 PetriNetUnfolderBase]: 14876/25554 cut-off events. [2024-11-09 15:13:52,195 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-11-09 15:13:52,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45863 conditions, 25554 events. 14876/25554 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 1370. Compared 223866 event pairs, 6540 based on Foata normal form. 532/19232 useless extension candidates. Maximal degree in co-relation 45829. Up to 11925 conditions per place. [2024-11-09 15:13:52,344 INFO L140 encePairwiseOnDemand]: 109/117 looper letters, 121 selfloop transitions, 5 changer transitions 0/173 dead transitions. [2024-11-09 15:13:52,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 173 transitions, 674 flow [2024-11-09 15:13:52,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:13:52,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:13:52,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2024-11-09 15:13:52,346 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6858974358974359 [2024-11-09 15:13:52,346 INFO L175 Difference]: Start difference. First operand has 112 places, 114 transitions, 300 flow. Second operand 4 states and 321 transitions. [2024-11-09 15:13:52,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 173 transitions, 674 flow [2024-11-09 15:13:52,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 173 transitions, 663 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-09 15:13:52,353 INFO L231 Difference]: Finished difference. Result has 115 places, 116 transitions, 323 flow [2024-11-09 15:13:52,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=323, PETRI_PLACES=115, PETRI_TRANSITIONS=116} [2024-11-09 15:13:52,355 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, 4 predicate places. [2024-11-09 15:13:52,355 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 116 transitions, 323 flow [2024-11-09 15:13:52,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:52,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:52,355 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:52,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 15:13:52,356 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2024-11-09 15:13:52,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:52,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1206582979, now seen corresponding path program 1 times [2024-11-09 15:13:52,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:52,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903486736] [2024-11-09 15:13:52,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:52,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:52,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:52,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:52,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903486736] [2024-11-09 15:13:52,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903486736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:52,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:52,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:13:52,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678477408] [2024-11-09 15:13:52,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:52,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:13:52,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:52,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:13:52,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:13:52,422 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 117 [2024-11-09 15:13:52,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 116 transitions, 323 flow. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:52,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:52,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 117 [2024-11-09 15:13:52,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:53,615 INFO L124 PetriNetUnfolderBase]: 11023/20273 cut-off events. [2024-11-09 15:13:53,616 INFO L125 PetriNetUnfolderBase]: For 3287/3803 co-relation queries the response was YES. [2024-11-09 15:13:53,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37877 conditions, 20273 events. 11023/20273 cut-off events. For 3287/3803 co-relation queries the response was YES. Maximal size of possible extension queue 1159. Compared 184854 event pairs, 8336 based on Foata normal form. 260/15635 useless extension candidates. Maximal degree in co-relation 37848. Up to 14848 conditions per place. [2024-11-09 15:13:53,754 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 60 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2024-11-09 15:13:53,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 115 transitions, 444 flow [2024-11-09 15:13:53,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:13:53,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:13:53,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2024-11-09 15:13:53,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6353276353276354 [2024-11-09 15:13:53,756 INFO L175 Difference]: Start difference. First operand has 115 places, 116 transitions, 323 flow. Second operand 3 states and 223 transitions. [2024-11-09 15:13:53,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 115 transitions, 444 flow [2024-11-09 15:13:53,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 115 transitions, 444 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:13:53,806 INFO L231 Difference]: Finished difference. Result has 117 places, 115 transitions, 324 flow [2024-11-09 15:13:53,807 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=117, PETRI_TRANSITIONS=115} [2024-11-09 15:13:53,807 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, 6 predicate places. [2024-11-09 15:13:53,808 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 115 transitions, 324 flow [2024-11-09 15:13:53,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:53,808 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:53,808 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:53,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:13:53,809 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2024-11-09 15:13:53,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:53,809 INFO L85 PathProgramCache]: Analyzing trace with hash -452384926, now seen corresponding path program 1 times [2024-11-09 15:13:53,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:53,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334162609] [2024-11-09 15:13:53,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:53,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:54,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:54,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:54,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334162609] [2024-11-09 15:13:54,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334162609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:54,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658851731] [2024-11-09 15:13:54,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:54,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:54,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:54,081 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:13:54,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:13:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:54,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 15:13:54,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:54,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 15:13:54,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 15:13:54,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:54,295 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:54,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-09 15:13:54,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-09 15:13:54,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:54,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658851731] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:54,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:54,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 15:13:54,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384206227] [2024-11-09 15:13:54,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:54,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 15:13:54,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:54,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 15:13:54,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-09 15:13:54,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 117 [2024-11-09 15:13:54,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 115 transitions, 324 flow. Second operand has 13 states, 13 states have (on average 55.38461538461539) internal successors, (720), 13 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:54,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:54,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 117 [2024-11-09 15:13:54,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:58,464 INFO L124 PetriNetUnfolderBase]: 23157/44515 cut-off events. [2024-11-09 15:13:58,464 INFO L125 PetriNetUnfolderBase]: For 6779/6787 co-relation queries the response was YES. [2024-11-09 15:13:58,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83882 conditions, 44515 events. 23157/44515 cut-off events. For 6779/6787 co-relation queries the response was YES. Maximal size of possible extension queue 1423. Compared 445797 event pairs, 6606 based on Foata normal form. 8/34390 useless extension candidates. Maximal degree in co-relation 83859. Up to 12250 conditions per place. [2024-11-09 15:13:58,806 INFO L140 encePairwiseOnDemand]: 104/117 looper letters, 176 selfloop transitions, 18 changer transitions 0/245 dead transitions. [2024-11-09 15:13:58,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 245 transitions, 1002 flow [2024-11-09 15:13:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:13:58,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:13:58,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 724 transitions. [2024-11-09 15:13:58,809 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6188034188034188 [2024-11-09 15:13:58,809 INFO L175 Difference]: Start difference. First operand has 117 places, 115 transitions, 324 flow. Second operand 10 states and 724 transitions. [2024-11-09 15:13:58,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 245 transitions, 1002 flow [2024-11-09 15:13:58,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 245 transitions, 998 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:13:58,929 INFO L231 Difference]: Finished difference. Result has 127 places, 124 transitions, 427 flow [2024-11-09 15:13:58,929 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=427, PETRI_PLACES=127, PETRI_TRANSITIONS=124} [2024-11-09 15:13:58,930 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, 16 predicate places. [2024-11-09 15:13:58,930 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 124 transitions, 427 flow [2024-11-09 15:13:58,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 55.38461538461539) internal successors, (720), 13 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:58,931 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:58,931 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:58,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 15:13:59,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:59,132 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2024-11-09 15:13:59,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:59,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1139061526, now seen corresponding path program 1 times [2024-11-09 15:13:59,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:59,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069967028] [2024-11-09 15:13:59,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:59,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:59,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:59,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:59,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069967028] [2024-11-09 15:13:59,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069967028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:59,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366412028] [2024-11-09 15:13:59,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:59,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:59,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:59,353 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:13:59,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:13:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:59,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 15:13:59,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:59,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 15:13:59,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 15:13:59,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:59,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:59,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-09 15:13:59,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-09 15:13:59,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:59,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366412028] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:59,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:59,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 15:13:59,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079550061] [2024-11-09 15:13:59,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:59,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 15:13:59,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:59,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 15:13:59,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-09 15:13:59,691 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 117 [2024-11-09 15:13:59,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 124 transitions, 427 flow. Second operand has 13 states, 13 states have (on average 53.53846153846154) internal successors, (696), 13 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:59,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:59,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 117 [2024-11-09 15:13:59,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:03,679 INFO L124 PetriNetUnfolderBase]: 27779/49299 cut-off events. [2024-11-09 15:14:03,680 INFO L125 PetriNetUnfolderBase]: For 21570/21726 co-relation queries the response was YES. [2024-11-09 15:14:03,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101951 conditions, 49299 events. 27779/49299 cut-off events. For 21570/21726 co-relation queries the response was YES. Maximal size of possible extension queue 1596. Compared 458353 event pairs, 7724 based on Foata normal form. 422/38454 useless extension candidates. Maximal degree in co-relation 101915. Up to 15200 conditions per place. [2024-11-09 15:14:04,008 INFO L140 encePairwiseOnDemand]: 104/117 looper letters, 180 selfloop transitions, 18 changer transitions 0/246 dead transitions. [2024-11-09 15:14:04,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 246 transitions, 1083 flow [2024-11-09 15:14:04,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:14:04,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:14:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 704 transitions. [2024-11-09 15:14:04,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6017094017094017 [2024-11-09 15:14:04,010 INFO L175 Difference]: Start difference. First operand has 127 places, 124 transitions, 427 flow. Second operand 10 states and 704 transitions. [2024-11-09 15:14:04,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 246 transitions, 1083 flow [2024-11-09 15:14:04,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 246 transitions, 1071 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-09 15:14:04,052 INFO L231 Difference]: Finished difference. Result has 134 places, 126 transitions, 477 flow [2024-11-09 15:14:04,052 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=477, PETRI_PLACES=134, PETRI_TRANSITIONS=126} [2024-11-09 15:14:04,052 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, 23 predicate places. [2024-11-09 15:14:04,053 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 126 transitions, 477 flow [2024-11-09 15:14:04,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 53.53846153846154) internal successors, (696), 13 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:04,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:04,054 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:04,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 15:14:04,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:04,254 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2024-11-09 15:14:04,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:04,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1463983486, now seen corresponding path program 1 times [2024-11-09 15:14:04,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:04,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895507897] [2024-11-09 15:14:04,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:04,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:04,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:04,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:04,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895507897] [2024-11-09 15:14:04,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895507897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:04,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:04,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:14:04,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159317595] [2024-11-09 15:14:04,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:04,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:14:04,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:04,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:14:04,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:14:04,356 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 117 [2024-11-09 15:14:04,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 126 transitions, 477 flow. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:04,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:04,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 117 [2024-11-09 15:14:04,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:09,795 INFO L124 PetriNetUnfolderBase]: 33465/61139 cut-off events. [2024-11-09 15:14:09,795 INFO L125 PetriNetUnfolderBase]: For 47735/48656 co-relation queries the response was YES. [2024-11-09 15:14:10,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133223 conditions, 61139 events. 33465/61139 cut-off events. For 47735/48656 co-relation queries the response was YES. Maximal size of possible extension queue 1879. Compared 613241 event pairs, 14827 based on Foata normal form. 1909/48175 useless extension candidates. Maximal degree in co-relation 133185. Up to 26504 conditions per place. [2024-11-09 15:14:10,237 INFO L140 encePairwiseOnDemand]: 109/117 looper letters, 148 selfloop transitions, 5 changer transitions 0/203 dead transitions. [2024-11-09 15:14:10,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 203 transitions, 1135 flow [2024-11-09 15:14:10,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:14:10,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:14:10,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2024-11-09 15:14:10,239 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6816239316239316 [2024-11-09 15:14:10,239 INFO L175 Difference]: Start difference. First operand has 134 places, 126 transitions, 477 flow. Second operand 4 states and 319 transitions. [2024-11-09 15:14:10,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 203 transitions, 1135 flow [2024-11-09 15:14:10,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 203 transitions, 1087 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-09 15:14:10,412 INFO L231 Difference]: Finished difference. Result has 132 places, 128 transitions, 487 flow [2024-11-09 15:14:10,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=487, PETRI_PLACES=132, PETRI_TRANSITIONS=128} [2024-11-09 15:14:10,413 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, 21 predicate places. [2024-11-09 15:14:10,413 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 128 transitions, 487 flow [2024-11-09 15:14:10,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:10,414 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:10,414 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:10,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 15:14:10,414 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2024-11-09 15:14:10,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:10,416 INFO L85 PathProgramCache]: Analyzing trace with hash -951168892, now seen corresponding path program 1 times [2024-11-09 15:14:10,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:10,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686220509] [2024-11-09 15:14:10,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:10,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:10,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:10,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:10,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686220509] [2024-11-09 15:14:10,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686220509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:10,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:10,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:14:10,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236752455] [2024-11-09 15:14:10,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:10,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:14:10,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:10,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:14:10,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:14:10,524 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 117 [2024-11-09 15:14:10,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 128 transitions, 487 flow. Second operand has 5 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:10,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:10,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 117 [2024-11-09 15:14:10,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:15,970 INFO L124 PetriNetUnfolderBase]: 34633/61030 cut-off events. [2024-11-09 15:14:15,970 INFO L125 PetriNetUnfolderBase]: For 39469/41167 co-relation queries the response was YES. [2024-11-09 15:14:16,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138056 conditions, 61030 events. 34633/61030 cut-off events. For 39469/41167 co-relation queries the response was YES. Maximal size of possible extension queue 1973. Compared 584089 event pairs, 7726 based on Foata normal form. 1481/50623 useless extension candidates. Maximal degree in co-relation 138020. Up to 25526 conditions per place. [2024-11-09 15:14:16,396 INFO L140 encePairwiseOnDemand]: 108/117 looper letters, 205 selfloop transitions, 8 changer transitions 0/261 dead transitions. [2024-11-09 15:14:16,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 261 transitions, 1266 flow [2024-11-09 15:14:16,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:14:16,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:14:16,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 501 transitions. [2024-11-09 15:14:16,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7136752136752137 [2024-11-09 15:14:16,398 INFO L175 Difference]: Start difference. First operand has 132 places, 128 transitions, 487 flow. Second operand 6 states and 501 transitions. [2024-11-09 15:14:16,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 261 transitions, 1266 flow [2024-11-09 15:14:16,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 261 transitions, 1266 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:14:16,678 INFO L231 Difference]: Finished difference. Result has 141 places, 130 transitions, 527 flow [2024-11-09 15:14:16,678 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=527, PETRI_PLACES=141, PETRI_TRANSITIONS=130} [2024-11-09 15:14:16,679 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, 30 predicate places. [2024-11-09 15:14:16,679 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 130 transitions, 527 flow [2024-11-09 15:14:16,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:16,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:16,680 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:16,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 15:14:16,680 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2024-11-09 15:14:16,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:16,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1861151094, now seen corresponding path program 1 times [2024-11-09 15:14:16,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:16,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472418348] [2024-11-09 15:14:16,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:16,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:16,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:16,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:16,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472418348] [2024-11-09 15:14:16,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472418348] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:16,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449346016] [2024-11-09 15:14:16,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:16,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:16,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:16,774 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:16,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 15:14:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:16,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 15:14:16,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:17,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:17,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:17,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449346016] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:17,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:17,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-11-09 15:14:17,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369653605] [2024-11-09 15:14:17,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:17,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 15:14:17,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:17,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 15:14:17,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-09 15:14:17,224 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 117 [2024-11-09 15:14:17,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 130 transitions, 527 flow. Second operand has 16 states, 16 states have (on average 56.5) internal successors, (904), 16 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:17,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:17,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 117 [2024-11-09 15:14:17,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand