./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-simple-array-sum.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-simple-array-sum.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 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:14:27,492 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:14:27,564 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:14:27,582 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:14:27,583 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:14:27,614 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:14:27,616 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:14:27,617 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:14:27,618 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:14:27,619 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:14:27,620 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:14:27,620 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:14:27,621 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:14:27,621 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:14:27,623 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:14:27,623 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:14:27,623 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:14:27,624 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:14:27,624 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:14:27,624 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:14:27,624 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:14:27,625 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:14:27,626 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:14:27,626 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:14:27,626 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:14:27,627 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:14:27,627 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:14:27,627 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:14:27,627 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:14:27,628 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:14:27,628 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:14:27,628 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:14:27,628 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:14:27,629 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:14:27,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:14:27,629 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:14:27,629 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:14:27,630 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:14:27,630 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:14:27,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:14:27,631 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:14:27,637 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:14:27,637 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:14:27,638 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:14:27,638 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 [2024-11-09 15:14:27,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:14:27,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:14:27,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:14:27,915 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:14:27,916 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:14:27,917 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-11-09 15:14:29,367 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:14:29,553 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:14:29,554 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-11-09 15:14:29,561 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d520749a/28f65c41290446bf9da41c69e3923fe1/FLAG283ce3c0f [2024-11-09 15:14:29,575 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d520749a/28f65c41290446bf9da41c69e3923fe1 [2024-11-09 15:14:29,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:14:29,579 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:14:29,581 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:14:29,581 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:14:29,587 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:14:29,588 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:14:29" (1/1) ... [2024-11-09 15:14:29,589 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f137b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:29, skipping insertion in model container [2024-11-09 15:14:29,589 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:14:29" (1/1) ... [2024-11-09 15:14:29,619 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:14:29,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:14:29,829 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:14:29,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:14:29,871 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:14:29,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:29 WrapperNode [2024-11-09 15:14:29,872 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:14:29,873 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:14:29,873 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:14:29,873 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:14:29,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:29" (1/1) ... [2024-11-09 15:14:29,889 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:29" (1/1) ... [2024-11-09 15:14:29,909 INFO L138 Inliner]: procedures = 23, calls = 21, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 115 [2024-11-09 15:14:29,910 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:14:29,910 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:14:29,911 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:14:29,911 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:14:29,920 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:29" (1/1) ... [2024-11-09 15:14:29,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:29" (1/1) ... [2024-11-09 15:14:29,923 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:29" (1/1) ... [2024-11-09 15:14:29,946 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-09 15:14:29,947 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:29" (1/1) ... [2024-11-09 15:14:29,947 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:29" (1/1) ... [2024-11-09 15:14:29,953 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:29" (1/1) ... [2024-11-09 15:14:29,960 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:29" (1/1) ... [2024-11-09 15:14:29,964 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:29" (1/1) ... [2024-11-09 15:14:29,965 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:29" (1/1) ... [2024-11-09 15:14:29,972 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:14:29,973 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:14:29,973 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:14:29,973 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:14:29,974 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:29" (1/1) ... [2024-11-09 15:14:29,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:14:29,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:30,011 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 15:14:30,017 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 15:14:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:14:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:14:30,067 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:14:30,068 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:14:30,068 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:14:30,068 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 15:14:30,068 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 15:14:30,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:14:30,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:14:30,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:14:30,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:14:30,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:14:30,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:14:30,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:14:30,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:14:30,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:14:30,072 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 15:14:30,183 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:14:30,184 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:14:30,501 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:14:30,501 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:14:30,754 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:14:30,755 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-09 15:14:30,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:14:30 BoogieIcfgContainer [2024-11-09 15:14:30,755 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:14:30,758 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:14:30,759 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:14:30,762 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:14:30,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:14:29" (1/3) ... [2024-11-09 15:14:30,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d52465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:14:30, skipping insertion in model container [2024-11-09 15:14:30,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:29" (2/3) ... [2024-11-09 15:14:30,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d52465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:14:30, skipping insertion in model container [2024-11-09 15:14:30,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:14:30" (3/3) ... [2024-11-09 15:14:30,766 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2024-11-09 15:14:30,783 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:14:30,784 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-09 15:14:30,784 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:14:30,848 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 15:14:30,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 59 transitions, 139 flow [2024-11-09 15:14:30,930 INFO L124 PetriNetUnfolderBase]: 6/56 cut-off events. [2024-11-09 15:14:30,930 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 15:14:30,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 56 events. 6/56 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 42. Up to 3 conditions per place. [2024-11-09 15:14:30,953 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 59 transitions, 139 flow [2024-11-09 15:14:30,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 54 transitions, 123 flow [2024-11-09 15:14:30,971 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:14:30,978 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;@2ea9eb0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:14:30,978 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-09 15:14:30,982 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:14:30,983 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:14:30,998 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:14:30,998 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:30,999 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:14:30,999 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:14:31,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:31,012 INFO L85 PathProgramCache]: Analyzing trace with hash 497041, now seen corresponding path program 1 times [2024-11-09 15:14:31,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:31,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88649938] [2024-11-09 15:14:31,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:31,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:31,305 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 15:14:31,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:31,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88649938] [2024-11-09 15:14:31,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88649938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:31,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:31,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:14:31,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255532394] [2024-11-09 15:14:31,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:31,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:14:31,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:31,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:14:31,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:14:31,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-09 15:14:31,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:31,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:31,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-09 15:14:31,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:31,715 INFO L124 PetriNetUnfolderBase]: 815/1704 cut-off events. [2024-11-09 15:14:31,715 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-11-09 15:14:31,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2949 conditions, 1704 events. 815/1704 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10773 event pairs, 608 based on Foata normal form. 2/1484 useless extension candidates. Maximal degree in co-relation 2702. Up to 1144 conditions per place. [2024-11-09 15:14:31,739 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 33 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2024-11-09 15:14:31,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 215 flow [2024-11-09 15:14:31,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:14:31,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:14:31,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-11-09 15:14:31,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.576271186440678 [2024-11-09 15:14:31,758 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 123 flow. Second operand 4 states and 136 transitions. [2024-11-09 15:14:31,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 215 flow [2024-11-09 15:14:31,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 206 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 15:14:31,770 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 174 flow [2024-11-09 15:14:31,772 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2024-11-09 15:14:31,780 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2024-11-09 15:14:31,780 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 174 flow [2024-11-09 15:14:31,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:31,782 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:31,782 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:14:31,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:14:31,784 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:14:31,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:31,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1922932052, now seen corresponding path program 1 times [2024-11-09 15:14:31,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:31,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836532753] [2024-11-09 15:14:31,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:31,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:31,928 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 15:14:31,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:31,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836532753] [2024-11-09 15:14:31,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836532753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:31,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721449269] [2024-11-09 15:14:31,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:31,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:31,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:31,932 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 15:14:31,933 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 15:14:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:32,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:14:32,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:32,062 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 15:14:32,062 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:14:32,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721449269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:32,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:14:32,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:14:32,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453969539] [2024-11-09 15:14:32,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:32,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:14:32,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:32,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:14:32,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:14:32,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-09 15:14:32,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 174 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:32,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:32,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-09 15:14:32,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:32,341 INFO L124 PetriNetUnfolderBase]: 815/1702 cut-off events. [2024-11-09 15:14:32,342 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-09 15:14:32,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2931 conditions, 1702 events. 815/1702 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10755 event pairs, 608 based on Foata normal form. 2/1485 useless extension candidates. Maximal degree in co-relation 2881. Up to 1134 conditions per place. [2024-11-09 15:14:32,355 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 26 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2024-11-09 15:14:32,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 242 flow [2024-11-09 15:14:32,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:14:32,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:14:32,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-11-09 15:14:32,358 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5028248587570622 [2024-11-09 15:14:32,359 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 174 flow. Second operand 6 states and 178 transitions. [2024-11-09 15:14:32,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 242 flow [2024-11-09 15:14:32,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 242 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:14:32,362 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 190 flow [2024-11-09 15:14:32,362 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-09 15:14:32,363 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2024-11-09 15:14:32,363 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 190 flow [2024-11-09 15:14:32,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:32,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:32,365 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:14:32,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 15:14:32,569 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 15:14:32,571 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:14:32,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:32,574 INFO L85 PathProgramCache]: Analyzing trace with hash -518648044, now seen corresponding path program 1 times [2024-11-09 15:14:32,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:32,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307102829] [2024-11-09 15:14:32,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:32,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:32,726 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 15:14:32,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:32,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307102829] [2024-11-09 15:14:32,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307102829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:32,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46532690] [2024-11-09 15:14:32,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:32,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:32,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:32,730 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 15:14:32,732 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 15:14:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:32,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:14:32,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:32,835 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 15:14:32,836 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:32,881 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 15:14:32,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46532690] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:32,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:32,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:14:32,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825648802] [2024-11-09 15:14:32,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:32,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:14:32,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:32,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:14:32,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:14:32,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-09 15:14:32,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 190 flow. Second operand has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:32,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:32,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-09 15:14:32,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:33,235 INFO L124 PetriNetUnfolderBase]: 821/1726 cut-off events. [2024-11-09 15:14:33,236 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-11-09 15:14:33,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3025 conditions, 1726 events. 821/1726 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 11023 event pairs, 608 based on Foata normal form. 6/1512 useless extension candidates. Maximal degree in co-relation 2883. Up to 1145 conditions per place. [2024-11-09 15:14:33,246 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 31 selfloop transitions, 25 changer transitions 0/76 dead transitions. [2024-11-09 15:14:33,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 76 transitions, 416 flow [2024-11-09 15:14:33,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:14:33,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:14:33,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 292 transitions. [2024-11-09 15:14:33,250 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49491525423728816 [2024-11-09 15:14:33,250 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 190 flow. Second operand 10 states and 292 transitions. [2024-11-09 15:14:33,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 76 transitions, 416 flow [2024-11-09 15:14:33,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 358 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-09 15:14:33,254 INFO L231 Difference]: Finished difference. Result has 69 places, 76 transitions, 330 flow [2024-11-09 15:14:33,255 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=330, PETRI_PLACES=69, PETRI_TRANSITIONS=76} [2024-11-09 15:14:33,256 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2024-11-09 15:14:33,256 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 76 transitions, 330 flow [2024-11-09 15:14:33,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:33,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:33,257 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:33,274 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 15:14:33,457 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 15:14:33,457 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:14:33,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:33,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1949792550, now seen corresponding path program 1 times [2024-11-09 15:14:33,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:33,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467089537] [2024-11-09 15:14:33,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:33,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:33,553 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 15:14:33,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:33,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467089537] [2024-11-09 15:14:33,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467089537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:33,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:33,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:14:33,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479617009] [2024-11-09 15:14:33,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:33,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:14:33,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:33,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:14:33,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:14:33,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-09 15:14:33,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 76 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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 15:14:33,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:33,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-09 15:14:33,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:33,848 INFO L124 PetriNetUnfolderBase]: 1614/2877 cut-off events. [2024-11-09 15:14:33,848 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-11-09 15:14:33,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5349 conditions, 2877 events. 1614/2877 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17336 event pairs, 858 based on Foata normal form. 62/2652 useless extension candidates. Maximal degree in co-relation 5282. Up to 1643 conditions per place. [2024-11-09 15:14:33,904 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 86 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2024-11-09 15:14:33,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 584 flow [2024-11-09 15:14:33,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:14:33,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:14:33,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-11-09 15:14:33,907 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.711864406779661 [2024-11-09 15:14:33,907 INFO L175 Difference]: Start difference. First operand has 69 places, 76 transitions, 330 flow. Second operand 4 states and 168 transitions. [2024-11-09 15:14:33,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 584 flow [2024-11-09 15:14:33,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 110 transitions, 560 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-09 15:14:33,913 INFO L231 Difference]: Finished difference. Result has 72 places, 79 transitions, 335 flow [2024-11-09 15:14:33,913 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=335, PETRI_PLACES=72, PETRI_TRANSITIONS=79} [2024-11-09 15:14:33,914 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2024-11-09 15:14:33,914 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 79 transitions, 335 flow [2024-11-09 15:14:33,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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 15:14:33,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:33,915 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:33,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 15:14:33,915 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:14:33,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:33,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1550700886, now seen corresponding path program 1 times [2024-11-09 15:14:33,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:33,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414085490] [2024-11-09 15:14:33,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:33,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:33,995 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 15:14:33,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:33,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414085490] [2024-11-09 15:14:33,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414085490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:33,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:33,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:14:33,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541981596] [2024-11-09 15:14:33,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:33,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:14:33,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:33,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:14:33,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:14:34,010 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-09 15:14:34,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 79 transitions, 335 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 15:14:34,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:34,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-09 15:14:34,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:34,559 INFO L124 PetriNetUnfolderBase]: 3211/5700 cut-off events. [2024-11-09 15:14:34,561 INFO L125 PetriNetUnfolderBase]: For 1667/1845 co-relation queries the response was YES. [2024-11-09 15:14:34,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11968 conditions, 5700 events. 3211/5700 cut-off events. For 1667/1845 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 36856 event pairs, 1536 based on Foata normal form. 101/5470 useless extension candidates. Maximal degree in co-relation 11901. Up to 3018 conditions per place. [2024-11-09 15:14:34,611 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 95 selfloop transitions, 4 changer transitions 0/118 dead transitions. [2024-11-09 15:14:34,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 118 transitions, 655 flow [2024-11-09 15:14:34,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:14:34,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:14:34,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-09 15:14:34,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6949152542372882 [2024-11-09 15:14:34,614 INFO L175 Difference]: Start difference. First operand has 72 places, 79 transitions, 335 flow. Second operand 4 states and 164 transitions. [2024-11-09 15:14:34,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 118 transitions, 655 flow [2024-11-09 15:14:34,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 118 transitions, 646 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:14:34,622 INFO L231 Difference]: Finished difference. Result has 76 places, 82 transitions, 361 flow [2024-11-09 15:14:34,623 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=361, PETRI_PLACES=76, PETRI_TRANSITIONS=82} [2024-11-09 15:14:34,624 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 18 predicate places. [2024-11-09 15:14:34,625 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 82 transitions, 361 flow [2024-11-09 15:14:34,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 15:14:34,625 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:34,626 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:34,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:14:34,626 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:14:34,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:34,627 INFO L85 PathProgramCache]: Analyzing trace with hash -854234206, now seen corresponding path program 1 times [2024-11-09 15:14:34,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:34,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460539346] [2024-11-09 15:14:34,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:34,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:34,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 15:14:34,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:34,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460539346] [2024-11-09 15:14:34,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460539346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:34,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:34,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:14:34,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907727508] [2024-11-09 15:14:34,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:34,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:14:34,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:34,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:14:34,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:14:34,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2024-11-09 15:14:34,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 82 transitions, 361 flow. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 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 15:14:34,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:34,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2024-11-09 15:14:34,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:35,429 INFO L124 PetriNetUnfolderBase]: 3434/6861 cut-off events. [2024-11-09 15:14:35,429 INFO L125 PetriNetUnfolderBase]: For 2245/2247 co-relation queries the response was YES. [2024-11-09 15:14:35,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14893 conditions, 6861 events. 3434/6861 cut-off events. For 2245/2247 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 50529 event pairs, 2335 based on Foata normal form. 100/6624 useless extension candidates. Maximal degree in co-relation 14824. Up to 3697 conditions per place. [2024-11-09 15:14:35,472 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 88 selfloop transitions, 12 changer transitions 0/122 dead transitions. [2024-11-09 15:14:35,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 122 transitions, 683 flow [2024-11-09 15:14:35,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:14:35,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:14:35,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2024-11-09 15:14:35,475 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.652542372881356 [2024-11-09 15:14:35,475 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 361 flow. Second operand 6 states and 231 transitions. [2024-11-09 15:14:35,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 122 transitions, 683 flow [2024-11-09 15:14:35,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 122 transitions, 674 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:14:35,481 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 411 flow [2024-11-09 15:14:35,481 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=411, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2024-11-09 15:14:35,482 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 25 predicate places. [2024-11-09 15:14:35,482 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 411 flow [2024-11-09 15:14:35,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 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 15:14:35,483 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:35,483 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:35,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 15:14:35,483 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:14:35,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:35,484 INFO L85 PathProgramCache]: Analyzing trace with hash -960567286, now seen corresponding path program 1 times [2024-11-09 15:14:35,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:35,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17460782] [2024-11-09 15:14:35,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:35,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:35,534 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 15:14:35,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:35,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17460782] [2024-11-09 15:14:35,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17460782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:35,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:35,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:14:35,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468698819] [2024-11-09 15:14:35,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:35,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:14:35,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:35,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:14:35,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:14:35,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-09 15:14:35,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 411 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 15:14:35,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:35,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-09 15:14:35,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:36,196 INFO L124 PetriNetUnfolderBase]: 3544/6859 cut-off events. [2024-11-09 15:14:36,197 INFO L125 PetriNetUnfolderBase]: For 3999/4315 co-relation queries the response was YES. [2024-11-09 15:14:36,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15641 conditions, 6859 events. 3544/6859 cut-off events. For 3999/4315 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 48782 event pairs, 695 based on Foata normal form. 170/6852 useless extension candidates. Maximal degree in co-relation 15568. Up to 3503 conditions per place. [2024-11-09 15:14:36,249 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 96 selfloop transitions, 4 changer transitions 2/123 dead transitions. [2024-11-09 15:14:36,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 123 transitions, 765 flow [2024-11-09 15:14:36,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:14:36,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:14:36,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2024-11-09 15:14:36,251 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6864406779661016 [2024-11-09 15:14:36,251 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 411 flow. Second operand 4 states and 162 transitions. [2024-11-09 15:14:36,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 123 transitions, 765 flow [2024-11-09 15:14:36,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 123 transitions, 747 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-09 15:14:36,258 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 418 flow [2024-11-09 15:14:36,258 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=418, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2024-11-09 15:14:36,259 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2024-11-09 15:14:36,259 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 418 flow [2024-11-09 15:14:36,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 15:14:36,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:36,260 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-09 15:14:36,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 15:14:36,260 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:14:36,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:36,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1046268873, now seen corresponding path program 2 times [2024-11-09 15:14:36,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:36,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038573639] [2024-11-09 15:14:36,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:36,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:36,434 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:36,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:36,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038573639] [2024-11-09 15:14:36,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038573639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:36,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559704988] [2024-11-09 15:14:36,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:14:36,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:36,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:36,437 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 15:14:36,439 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 15:14:36,504 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:14:36,504 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:14:36,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:14:36,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:36,558 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:14:36,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:14:36,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559704988] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:36,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:36,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-09 15:14:36,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308523614] [2024-11-09 15:14:36,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:36,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 15:14:36,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:36,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 15:14:36,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-09 15:14:36,640 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-09 15:14:36,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 418 flow. Second operand has 14 states, 14 states have (on average 24.142857142857142) internal successors, (338), 14 states have internal predecessors, (338), 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 15:14:36,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:36,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-09 15:14:36,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:37,395 INFO L124 PetriNetUnfolderBase]: 2663/5161 cut-off events. [2024-11-09 15:14:37,396 INFO L125 PetriNetUnfolderBase]: For 3172/3413 co-relation queries the response was YES. [2024-11-09 15:14:37,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12455 conditions, 5161 events. 2663/5161 cut-off events. For 3172/3413 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 34951 event pairs, 2011 based on Foata normal form. 104/5030 useless extension candidates. Maximal degree in co-relation 12358. Up to 3793 conditions per place. [2024-11-09 15:14:37,428 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 35 selfloop transitions, 35 changer transitions 0/93 dead transitions. [2024-11-09 15:14:37,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 93 transitions, 587 flow [2024-11-09 15:14:37,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 15:14:37,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 15:14:37,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 616 transitions. [2024-11-09 15:14:37,430 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4350282485875706 [2024-11-09 15:14:37,431 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 418 flow. Second operand 24 states and 616 transitions. [2024-11-09 15:14:37,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 93 transitions, 587 flow [2024-11-09 15:14:37,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 93 transitions, 587 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:14:37,438 INFO L231 Difference]: Finished difference. Result has 110 places, 93 transitions, 530 flow [2024-11-09 15:14:37,439 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=530, PETRI_PLACES=110, PETRI_TRANSITIONS=93} [2024-11-09 15:14:37,439 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 52 predicate places. [2024-11-09 15:14:37,440 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 93 transitions, 530 flow [2024-11-09 15:14:37,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.142857142857142) internal successors, (338), 14 states have internal predecessors, (338), 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 15:14:37,440 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:37,440 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:37,457 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 15:14:37,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:37,642 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:14:37,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:37,642 INFO L85 PathProgramCache]: Analyzing trace with hash 530879877, now seen corresponding path program 1 times [2024-11-09 15:14:37,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:37,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211411187] [2024-11-09 15:14:37,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:37,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:14:37,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:37,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211411187] [2024-11-09 15:14:37,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211411187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:37,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852736788] [2024-11-09 15:14:37,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:37,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:37,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:37,732 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 15:14:37,733 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 15:14:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:37,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 15:14:37,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:37,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:38,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:38,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852736788] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:38,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:38,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-09 15:14:38,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819294007] [2024-11-09 15:14:38,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:38,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 15:14:38,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:38,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 15:14:38,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-09 15:14:38,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 59 [2024-11-09 15:14:38,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 93 transitions, 530 flow. Second operand has 19 states, 19 states have (on average 22.31578947368421) internal successors, (424), 19 states have internal predecessors, (424), 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 15:14:38,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:38,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 59 [2024-11-09 15:14:38,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:39,659 INFO L124 PetriNetUnfolderBase]: 4947/8586 cut-off events. [2024-11-09 15:14:39,660 INFO L125 PetriNetUnfolderBase]: For 4649/5068 co-relation queries the response was YES. [2024-11-09 15:14:39,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21367 conditions, 8586 events. 4947/8586 cut-off events. For 4649/5068 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 56768 event pairs, 1089 based on Foata normal form. 376/8620 useless extension candidates. Maximal degree in co-relation 21273. Up to 1527 conditions per place. [2024-11-09 15:14:39,728 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 196 selfloop transitions, 51 changer transitions 0/267 dead transitions. [2024-11-09 15:14:39,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 267 transitions, 1676 flow [2024-11-09 15:14:39,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 15:14:39,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 15:14:39,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 532 transitions. [2024-11-09 15:14:39,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5304087736789631 [2024-11-09 15:14:39,731 INFO L175 Difference]: Start difference. First operand has 110 places, 93 transitions, 530 flow. Second operand 17 states and 532 transitions. [2024-11-09 15:14:39,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 267 transitions, 1676 flow [2024-11-09 15:14:39,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 267 transitions, 1552 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-11-09 15:14:39,753 INFO L231 Difference]: Finished difference. Result has 118 places, 110 transitions, 719 flow [2024-11-09 15:14:39,753 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=719, PETRI_PLACES=118, PETRI_TRANSITIONS=110} [2024-11-09 15:14:39,754 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 60 predicate places. [2024-11-09 15:14:39,754 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 110 transitions, 719 flow [2024-11-09 15:14:39,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 22.31578947368421) internal successors, (424), 19 states have internal predecessors, (424), 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 15:14:39,755 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:39,755 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:39,773 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 15:14:39,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:39,956 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:14:39,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:39,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1301865447, now seen corresponding path program 1 times [2024-11-09 15:14:39,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:39,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740132345] [2024-11-09 15:14:39,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:39,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:40,041 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 15:14:40,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:40,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740132345] [2024-11-09 15:14:40,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740132345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:40,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:40,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 15:14:40,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578172270] [2024-11-09 15:14:40,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:40,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:14:40,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:40,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:14:40,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:14:40,058 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-09 15:14:40,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 110 transitions, 719 flow. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 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 15:14:40,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:40,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-09 15:14:40,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:41,162 INFO L124 PetriNetUnfolderBase]: 7131/13060 cut-off events. [2024-11-09 15:14:41,162 INFO L125 PetriNetUnfolderBase]: For 16188/16855 co-relation queries the response was YES. [2024-11-09 15:14:41,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35061 conditions, 13060 events. 7131/13060 cut-off events. For 16188/16855 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 98458 event pairs, 2390 based on Foata normal form. 447/13340 useless extension candidates. Maximal degree in co-relation 34963. Up to 5871 conditions per place. [2024-11-09 15:14:41,339 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 177 selfloop transitions, 11 changer transitions 0/207 dead transitions. [2024-11-09 15:14:41,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 207 transitions, 1639 flow [2024-11-09 15:14:41,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:14:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:14:41,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 243 transitions. [2024-11-09 15:14:41,341 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6864406779661016 [2024-11-09 15:14:41,341 INFO L175 Difference]: Start difference. First operand has 118 places, 110 transitions, 719 flow. Second operand 6 states and 243 transitions. [2024-11-09 15:14:41,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 207 transitions, 1639 flow [2024-11-09 15:14:41,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 207 transitions, 1497 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-11-09 15:14:41,372 INFO L231 Difference]: Finished difference. Result has 124 places, 118 transitions, 774 flow [2024-11-09 15:14:41,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=774, PETRI_PLACES=124, PETRI_TRANSITIONS=118} [2024-11-09 15:14:41,373 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 66 predicate places. [2024-11-09 15:14:41,373 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 118 transitions, 774 flow [2024-11-09 15:14:41,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 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 15:14:41,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:41,374 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:41,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 15:14:41,374 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:14:41,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:41,374 INFO L85 PathProgramCache]: Analyzing trace with hash -121098323, now seen corresponding path program 2 times [2024-11-09 15:14:41,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:41,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067844150] [2024-11-09 15:14:41,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:41,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:41,448 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 15:14:41,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:41,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067844150] [2024-11-09 15:14:41,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067844150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:41,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:41,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 15:14:41,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959057106] [2024-11-09 15:14:41,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:41,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:14:41,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:41,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:14:41,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:14:41,465 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-09 15:14:41,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 118 transitions, 774 flow. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 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 15:14:41,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:41,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-09 15:14:41,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:43,191 INFO L124 PetriNetUnfolderBase]: 10352/18599 cut-off events. [2024-11-09 15:14:43,191 INFO L125 PetriNetUnfolderBase]: For 22630/24110 co-relation queries the response was YES. [2024-11-09 15:14:43,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49484 conditions, 18599 events. 10352/18599 cut-off events. For 22630/24110 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 142722 event pairs, 3846 based on Foata normal form. 633/18632 useless extension candidates. Maximal degree in co-relation 49382. Up to 6352 conditions per place. [2024-11-09 15:14:43,288 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 180 selfloop transitions, 11 changer transitions 0/210 dead transitions. [2024-11-09 15:14:43,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 210 transitions, 1591 flow [2024-11-09 15:14:43,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:14:43,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:14:43,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 237 transitions. [2024-11-09 15:14:43,290 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6694915254237288 [2024-11-09 15:14:43,290 INFO L175 Difference]: Start difference. First operand has 124 places, 118 transitions, 774 flow. Second operand 6 states and 237 transitions. [2024-11-09 15:14:43,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 210 transitions, 1591 flow [2024-11-09 15:14:43,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 210 transitions, 1580 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 15:14:43,333 INFO L231 Difference]: Finished difference. Result has 132 places, 123 transitions, 846 flow [2024-11-09 15:14:43,333 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=846, PETRI_PLACES=132, PETRI_TRANSITIONS=123} [2024-11-09 15:14:43,333 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 74 predicate places. [2024-11-09 15:14:43,334 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 123 transitions, 846 flow [2024-11-09 15:14:43,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 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 15:14:43,334 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:43,334 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:43,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 15:14:43,334 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:14:43,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:43,335 INFO L85 PathProgramCache]: Analyzing trace with hash -455583147, now seen corresponding path program 3 times [2024-11-09 15:14:43,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:43,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955566127] [2024-11-09 15:14:43,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:43,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:43,394 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 15:14:43,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:43,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955566127] [2024-11-09 15:14:43,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955566127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:43,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:43,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 15:14:43,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621452687] [2024-11-09 15:14:43,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:43,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:14:43,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:43,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:14:43,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:14:43,413 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-09 15:14:43,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 123 transitions, 846 flow. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 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 15:14:43,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:43,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-09 15:14:43,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:45,186 INFO L124 PetriNetUnfolderBase]: 10824/19607 cut-off events. [2024-11-09 15:14:45,187 INFO L125 PetriNetUnfolderBase]: For 37381/38707 co-relation queries the response was YES. [2024-11-09 15:14:45,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54204 conditions, 19607 events. 10824/19607 cut-off events. For 37381/38707 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 148507 event pairs, 2241 based on Foata normal form. 336/19420 useless extension candidates. Maximal degree in co-relation 54098. Up to 7910 conditions per place. [2024-11-09 15:14:45,417 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 173 selfloop transitions, 18 changer transitions 1/211 dead transitions. [2024-11-09 15:14:45,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 211 transitions, 1640 flow [2024-11-09 15:14:45,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:14:45,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:14:45,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 241 transitions. [2024-11-09 15:14:45,418 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6807909604519774 [2024-11-09 15:14:45,418 INFO L175 Difference]: Start difference. First operand has 132 places, 123 transitions, 846 flow. Second operand 6 states and 241 transitions. [2024-11-09 15:14:45,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 211 transitions, 1640 flow [2024-11-09 15:14:45,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 211 transitions, 1619 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-09 15:14:45,464 INFO L231 Difference]: Finished difference. Result has 138 places, 125 transitions, 911 flow [2024-11-09 15:14:45,464 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=911, PETRI_PLACES=138, PETRI_TRANSITIONS=125} [2024-11-09 15:14:45,465 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 80 predicate places. [2024-11-09 15:14:45,465 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 125 transitions, 911 flow [2024-11-09 15:14:45,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 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 15:14:45,465 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:45,465 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:45,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 15:14:45,466 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:14:45,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:45,466 INFO L85 PathProgramCache]: Analyzing trace with hash -183390428, now seen corresponding path program 1 times [2024-11-09 15:14:45,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:45,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21631305] [2024-11-09 15:14:45,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:45,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:45,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 15:14:45,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:45,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21631305] [2024-11-09 15:14:45,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21631305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:45,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:45,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:14:45,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281213684] [2024-11-09 15:14:45,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:45,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:14:45,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:45,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:14:45,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:14:45,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2024-11-09 15:14:45,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 125 transitions, 911 flow. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 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 15:14:45,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:45,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2024-11-09 15:14:45,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:47,259 INFO L124 PetriNetUnfolderBase]: 9302/17039 cut-off events. [2024-11-09 15:14:47,260 INFO L125 PetriNetUnfolderBase]: For 30657/31719 co-relation queries the response was YES. [2024-11-09 15:14:47,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46980 conditions, 17039 events. 9302/17039 cut-off events. For 30657/31719 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 125815 event pairs, 7286 based on Foata normal form. 141/16678 useless extension candidates. Maximal degree in co-relation 46872. Up to 12744 conditions per place. [2024-11-09 15:14:47,355 INFO L140 encePairwiseOnDemand]: 51/59 looper letters, 83 selfloop transitions, 9 changer transitions 29/148 dead transitions. [2024-11-09 15:14:47,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 148 transitions, 1293 flow [2024-11-09 15:14:47,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:14:47,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:14:47,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2024-11-09 15:14:47,356 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6129943502824858 [2024-11-09 15:14:47,356 INFO L175 Difference]: Start difference. First operand has 138 places, 125 transitions, 911 flow. Second operand 6 states and 217 transitions. [2024-11-09 15:14:47,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 148 transitions, 1293 flow [2024-11-09 15:14:47,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 148 transitions, 1237 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-09 15:14:47,420 INFO L231 Difference]: Finished difference. Result has 141 places, 119 transitions, 850 flow [2024-11-09 15:14:47,421 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=850, PETRI_PLACES=141, PETRI_TRANSITIONS=119} [2024-11-09 15:14:47,421 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 83 predicate places. [2024-11-09 15:14:47,421 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 119 transitions, 850 flow [2024-11-09 15:14:47,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 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 15:14:47,422 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:47,422 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:47,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 15:14:47,422 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:14:47,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:47,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1139171024, now seen corresponding path program 1 times [2024-11-09 15:14:47,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:47,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373830053] [2024-11-09 15:14:47,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:47,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:47,616 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 15:14:47,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:47,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373830053] [2024-11-09 15:14:47,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373830053] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:47,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762177183] [2024-11-09 15:14:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:47,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:47,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:47,619 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 15:14:47,621 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 15:14:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:47,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 15:14:47,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:47,794 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 15:14:47,795 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:47,891 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 15:14:47,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762177183] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:47,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:47,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-11-09 15:14:47,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811435557] [2024-11-09 15:14:47,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:47,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 15:14:47,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:47,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 15:14:47,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-09 15:14:48,014 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-09 15:14:48,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 119 transitions, 850 flow. Second operand has 19 states, 19 states have (on average 24.210526315789473) internal successors, (460), 19 states have internal predecessors, (460), 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 15:14:48,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:48,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-09 15:14:48,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:49,505 INFO L124 PetriNetUnfolderBase]: 8094/15411 cut-off events. [2024-11-09 15:14:49,505 INFO L125 PetriNetUnfolderBase]: For 24433/25608 co-relation queries the response was YES. [2024-11-09 15:14:49,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41413 conditions, 15411 events. 8094/15411 cut-off events. For 24433/25608 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 119224 event pairs, 6514 based on Foata normal form. 28/14895 useless extension candidates. Maximal degree in co-relation 41339. Up to 6767 conditions per place. [2024-11-09 15:14:49,599 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 82 selfloop transitions, 32 changer transitions 1/142 dead transitions. [2024-11-09 15:14:49,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 142 transitions, 1191 flow [2024-11-09 15:14:49,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:14:49,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:14:49,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 298 transitions. [2024-11-09 15:14:49,601 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5050847457627119 [2024-11-09 15:14:49,601 INFO L175 Difference]: Start difference. First operand has 141 places, 119 transitions, 850 flow. Second operand 10 states and 298 transitions. [2024-11-09 15:14:49,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 142 transitions, 1191 flow [2024-11-09 15:14:49,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 142 transitions, 1066 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-11-09 15:14:49,649 INFO L231 Difference]: Finished difference. Result has 133 places, 110 transitions, 717 flow [2024-11-09 15:14:49,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=717, PETRI_PLACES=133, PETRI_TRANSITIONS=110} [2024-11-09 15:14:49,649 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 75 predicate places. [2024-11-09 15:14:49,650 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 110 transitions, 717 flow [2024-11-09 15:14:49,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 24.210526315789473) internal successors, (460), 19 states have internal predecessors, (460), 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 15:14:49,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:49,650 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 2, 2, 2, 1, 1, 1] [2024-11-09 15:14:49,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 15:14:49,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 15:14:49,851 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:14:49,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:49,851 INFO L85 PathProgramCache]: Analyzing trace with hash -823580301, now seen corresponding path program 2 times [2024-11-09 15:14:49,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:49,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680219633] [2024-11-09 15:14:49,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:49,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:50,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:50,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680219633] [2024-11-09 15:14:50,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680219633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:50,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446440850] [2024-11-09 15:14:50,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:14:50,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:50,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:50,371 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:50,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 15:14:50,441 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:14:50,442 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:14:50,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:14:50,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:50,514 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 15:14:50,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:50,576 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 15:14:50,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446440850] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:50,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:50,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 3, 3] total 20 [2024-11-09 15:14:50,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336971879] [2024-11-09 15:14:50,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:50,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 15:14:50,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:50,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 15:14:50,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-09 15:14:50,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-09 15:14:50,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 110 transitions, 717 flow. Second operand has 21 states, 21 states have (on average 24.238095238095237) internal successors, (509), 21 states have internal predecessors, (509), 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 15:14:50,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:50,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-09 15:14:50,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:52,273 INFO L124 PetriNetUnfolderBase]: 7912/14851 cut-off events. [2024-11-09 15:14:52,273 INFO L125 PetriNetUnfolderBase]: For 17807/18589 co-relation queries the response was YES. [2024-11-09 15:14:52,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38282 conditions, 14851 events. 7912/14851 cut-off events. For 17807/18589 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 113670 event pairs, 6420 based on Foata normal form. 112/14414 useless extension candidates. Maximal degree in co-relation 38223. Up to 11175 conditions per place. [2024-11-09 15:14:52,368 INFO L140 encePairwiseOnDemand]: 51/59 looper letters, 44 selfloop transitions, 44 changer transitions 0/115 dead transitions. [2024-11-09 15:14:52,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 115 transitions, 932 flow [2024-11-09 15:14:52,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 15:14:52,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 15:14:52,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 494 transitions. [2024-11-09 15:14:52,371 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4406779661016949 [2024-11-09 15:14:52,371 INFO L175 Difference]: Start difference. First operand has 133 places, 110 transitions, 717 flow. Second operand 19 states and 494 transitions. [2024-11-09 15:14:52,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 115 transitions, 932 flow [2024-11-09 15:14:52,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 115 transitions, 839 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-11-09 15:14:52,404 INFO L231 Difference]: Finished difference. Result has 138 places, 115 transitions, 751 flow [2024-11-09 15:14:52,404 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=751, PETRI_PLACES=138, PETRI_TRANSITIONS=115} [2024-11-09 15:14:52,405 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 80 predicate places. [2024-11-09 15:14:52,405 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 115 transitions, 751 flow [2024-11-09 15:14:52,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 24.238095238095237) internal successors, (509), 21 states have internal predecessors, (509), 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 15:14:52,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:52,406 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:52,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 15:14:52,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 15:14:52,606 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:14:52,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:52,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1081474090, now seen corresponding path program 1 times [2024-11-09 15:14:52,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:52,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12920367] [2024-11-09 15:14:52,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:52,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 15:14:52,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:52,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12920367] [2024-11-09 15:14:52,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12920367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:52,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403820750] [2024-11-09 15:14:52,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:52,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:52,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:52,703 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:52,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 15:14:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:52,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:14:52,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:52,812 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 15:14:52,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:52,840 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 15:14:52,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403820750] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:52,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:52,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 15:14:52,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406322961] [2024-11-09 15:14:52,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:52,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:14:52,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:52,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:14:52,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:14:52,867 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-09 15:14:52,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 115 transitions, 751 flow. Second operand has 12 states, 12 states have (on average 27.166666666666668) internal successors, (326), 12 states have internal predecessors, (326), 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 15:14:52,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:52,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-09 15:14:52,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:55,122 INFO L124 PetriNetUnfolderBase]: 13153/23010 cut-off events. [2024-11-09 15:14:55,123 INFO L125 PetriNetUnfolderBase]: For 26773/28152 co-relation queries the response was YES. [2024-11-09 15:14:55,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60567 conditions, 23010 events. 13153/23010 cut-off events. For 26773/28152 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 171978 event pairs, 3554 based on Foata normal form. 1002/23600 useless extension candidates. Maximal degree in co-relation 60512. Up to 7704 conditions per place. [2024-11-09 15:14:55,375 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 308 selfloop transitions, 18 changer transitions 0/352 dead transitions. [2024-11-09 15:14:55,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 352 transitions, 2861 flow [2024-11-09 15:14:55,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:14:55,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:14:55,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 420 transitions. [2024-11-09 15:14:55,377 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.711864406779661 [2024-11-09 15:14:55,377 INFO L175 Difference]: Start difference. First operand has 138 places, 115 transitions, 751 flow. Second operand 10 states and 420 transitions. [2024-11-09 15:14:55,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 352 transitions, 2861 flow [2024-11-09 15:14:55,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 352 transitions, 2766 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-11-09 15:14:55,442 INFO L231 Difference]: Finished difference. Result has 139 places, 124 transitions, 752 flow [2024-11-09 15:14:55,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=752, PETRI_PLACES=139, PETRI_TRANSITIONS=124} [2024-11-09 15:14:55,443 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 81 predicate places. [2024-11-09 15:14:55,443 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 124 transitions, 752 flow [2024-11-09 15:14:55,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.166666666666668) internal successors, (326), 12 states have internal predecessors, (326), 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 15:14:55,444 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:55,444 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:55,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 15:14:55,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:55,649 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:14:55,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:55,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1223277049, now seen corresponding path program 1 times [2024-11-09 15:14:55,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:55,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890702541] [2024-11-09 15:14:55,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:55,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:55,736 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:14:55,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:55,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890702541] [2024-11-09 15:14:55,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890702541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:55,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129237594] [2024-11-09 15:14:55,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:55,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:55,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:55,740 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:55,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 15:14:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:55,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 15:14:55,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:55,960 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:55,960 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:56,060 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:56,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129237594] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:56,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:56,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-09 15:14:56,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378592497] [2024-11-09 15:14:56,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:56,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 15:14:56,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:56,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 15:14:56,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-09 15:14:56,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-11-09 15:14:56,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 124 transitions, 752 flow. Second operand has 19 states, 19 states have (on average 21.789473684210527) internal successors, (414), 19 states have internal predecessors, (414), 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 15:14:56,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:56,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-11-09 15:14:56,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:59,115 INFO L124 PetriNetUnfolderBase]: 16373/26472 cut-off events. [2024-11-09 15:14:59,115 INFO L125 PetriNetUnfolderBase]: For 46343/46751 co-relation queries the response was YES. [2024-11-09 15:14:59,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78560 conditions, 26472 events. 16373/26472 cut-off events. For 46343/46751 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 180933 event pairs, 2903 based on Foata normal form. 481/26359 useless extension candidates. Maximal degree in co-relation 78507. Up to 9964 conditions per place. [2024-11-09 15:14:59,298 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 174 selfloop transitions, 43 changer transitions 66/305 dead transitions. [2024-11-09 15:14:59,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 305 transitions, 2340 flow [2024-11-09 15:14:59,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 15:14:59,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 15:14:59,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 483 transitions. [2024-11-09 15:14:59,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.481555333998006 [2024-11-09 15:14:59,299 INFO L175 Difference]: Start difference. First operand has 139 places, 124 transitions, 752 flow. Second operand 17 states and 483 transitions. [2024-11-09 15:14:59,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 305 transitions, 2340 flow [2024-11-09 15:14:59,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 305 transitions, 2254 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-11-09 15:14:59,397 INFO L231 Difference]: Finished difference. Result has 153 places, 112 transitions, 750 flow [2024-11-09 15:14:59,397 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=750, PETRI_PLACES=153, PETRI_TRANSITIONS=112} [2024-11-09 15:14:59,398 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 95 predicate places. [2024-11-09 15:14:59,398 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 112 transitions, 750 flow [2024-11-09 15:14:59,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.789473684210527) internal successors, (414), 19 states have internal predecessors, (414), 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 15:14:59,398 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:59,398 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:59,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 15:14:59,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 15:14:59,603 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:14:59,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:59,603 INFO L85 PathProgramCache]: Analyzing trace with hash 781914272, now seen corresponding path program 1 times [2024-11-09 15:14:59,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:59,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011179744] [2024-11-09 15:14:59,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:59,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:59,691 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 15:14:59,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:59,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011179744] [2024-11-09 15:14:59,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011179744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:59,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703705139] [2024-11-09 15:14:59,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:59,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:59,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:59,695 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:59,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 15:14:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:59,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:14:59,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:59,812 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 15:14:59,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:59,850 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 15:14:59,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703705139] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:59,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:59,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 15:14:59,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402545175] [2024-11-09 15:14:59,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:59,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:14:59,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:59,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:14:59,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:14:59,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-09 15:14:59,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 112 transitions, 750 flow. Second operand has 12 states, 12 states have (on average 26.75) internal successors, (321), 12 states have internal predecessors, (321), 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 15:14:59,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:59,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-09 15:14:59,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:03,785 INFO L124 PetriNetUnfolderBase]: 22625/39153 cut-off events. [2024-11-09 15:15:03,785 INFO L125 PetriNetUnfolderBase]: For 63849/64631 co-relation queries the response was YES. [2024-11-09 15:15:03,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114844 conditions, 39153 events. 22625/39153 cut-off events. For 63849/64631 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 304668 event pairs, 4945 based on Foata normal form. 1134/39758 useless extension candidates. Maximal degree in co-relation 114785. Up to 11404 conditions per place. [2024-11-09 15:15:04,051 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 295 selfloop transitions, 19 changer transitions 0/337 dead transitions. [2024-11-09 15:15:04,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 337 transitions, 2528 flow [2024-11-09 15:15:04,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:15:04,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:15:04,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 401 transitions. [2024-11-09 15:15:04,053 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6796610169491526 [2024-11-09 15:15:04,053 INFO L175 Difference]: Start difference. First operand has 153 places, 112 transitions, 750 flow. Second operand 10 states and 401 transitions. [2024-11-09 15:15:04,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 337 transitions, 2528 flow [2024-11-09 15:15:04,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 337 transitions, 2356 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-11-09 15:15:04,175 INFO L231 Difference]: Finished difference. Result has 141 places, 121 transitions, 728 flow [2024-11-09 15:15:04,176 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=728, PETRI_PLACES=141, PETRI_TRANSITIONS=121} [2024-11-09 15:15:04,176 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 83 predicate places. [2024-11-09 15:15:04,176 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 121 transitions, 728 flow [2024-11-09 15:15:04,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.75) internal successors, (321), 12 states have internal predecessors, (321), 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 15:15:04,177 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:04,177 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:04,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 15:15:04,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 15:15:04,378 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:15:04,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:04,378 INFO L85 PathProgramCache]: Analyzing trace with hash -91246797, now seen corresponding path program 1 times [2024-11-09 15:15:04,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:04,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990860457] [2024-11-09 15:15:04,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:04,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:04,717 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 15:15:04,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:04,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990860457] [2024-11-09 15:15:04,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990860457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:15:04,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:15:04,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:15:04,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314417606] [2024-11-09 15:15:04,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:15:04,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:15:04,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:04,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:15:04,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:15:04,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-09 15:15:04,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 121 transitions, 728 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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 15:15:04,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:04,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-09 15:15:04,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:08,077 INFO L124 PetriNetUnfolderBase]: 20251/34705 cut-off events. [2024-11-09 15:15:08,078 INFO L125 PetriNetUnfolderBase]: For 63664/64463 co-relation queries the response was YES. [2024-11-09 15:15:08,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100746 conditions, 34705 events. 20251/34705 cut-off events. For 63664/64463 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 263862 event pairs, 8985 based on Foata normal form. 868/34736 useless extension candidates. Maximal degree in co-relation 100694. Up to 15030 conditions per place. [2024-11-09 15:15:08,701 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 149 selfloop transitions, 7 changer transitions 0/183 dead transitions. [2024-11-09 15:15:08,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 183 transitions, 1371 flow [2024-11-09 15:15:08,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:15:08,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:15:08,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2024-11-09 15:15:08,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.690677966101695 [2024-11-09 15:15:08,703 INFO L175 Difference]: Start difference. First operand has 141 places, 121 transitions, 728 flow. Second operand 4 states and 163 transitions. [2024-11-09 15:15:08,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 183 transitions, 1371 flow [2024-11-09 15:15:08,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 183 transitions, 1342 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-09 15:15:08,842 INFO L231 Difference]: Finished difference. Result has 144 places, 122 transitions, 741 flow [2024-11-09 15:15:08,842 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=741, PETRI_PLACES=144, PETRI_TRANSITIONS=122} [2024-11-09 15:15:08,843 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 86 predicate places. [2024-11-09 15:15:08,843 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 122 transitions, 741 flow [2024-11-09 15:15:08,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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 15:15:08,843 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:08,843 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:08,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 15:15:08,843 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:15:08,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:08,844 INFO L85 PathProgramCache]: Analyzing trace with hash 545324894, now seen corresponding path program 2 times [2024-11-09 15:15:08,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:08,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471960093] [2024-11-09 15:15:08,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:08,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-09 15:15:09,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:09,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471960093] [2024-11-09 15:15:09,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471960093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:09,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290028879] [2024-11-09 15:15:09,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:15:09,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:09,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:09,020 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:09,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 15:15:09,101 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:15:09,101 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:15:09,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:15:09,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:09,173 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-09 15:15:09,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:09,238 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-09 15:15:09,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290028879] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:09,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:09,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2024-11-09 15:15:09,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370518857] [2024-11-09 15:15:09,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:09,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 15:15:09,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:09,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 15:15:09,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-09 15:15:09,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 59 [2024-11-09 15:15:09,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 122 transitions, 741 flow. Second operand has 13 states, 13 states have (on average 22.76923076923077) internal successors, (296), 13 states have internal predecessors, (296), 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 15:15:09,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:09,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 59 [2024-11-09 15:15:09,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:16,847 INFO L124 PetriNetUnfolderBase]: 44588/72381 cut-off events. [2024-11-09 15:15:16,847 INFO L125 PetriNetUnfolderBase]: For 138870/140737 co-relation queries the response was YES. [2024-11-09 15:15:17,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210097 conditions, 72381 events. 44588/72381 cut-off events. For 138870/140737 co-relation queries the response was YES. Maximal size of possible extension queue 1154. Compared 574379 event pairs, 9854 based on Foata normal form. 858/72162 useless extension candidates. Maximal degree in co-relation 210042. Up to 13897 conditions per place. [2024-11-09 15:15:17,509 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 338 selfloop transitions, 52 changer transitions 9/426 dead transitions. [2024-11-09 15:15:17,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 426 transitions, 3678 flow [2024-11-09 15:15:17,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 15:15:17,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-09 15:15:17,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 610 transitions. [2024-11-09 15:15:17,512 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4923325262308313 [2024-11-09 15:15:17,512 INFO L175 Difference]: Start difference. First operand has 144 places, 122 transitions, 741 flow. Second operand 21 states and 610 transitions. [2024-11-09 15:15:17,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 426 transitions, 3678 flow [2024-11-09 15:15:18,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 426 transitions, 3604 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-09 15:15:18,445 INFO L231 Difference]: Finished difference. Result has 160 places, 138 transitions, 932 flow [2024-11-09 15:15:18,445 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=932, PETRI_PLACES=160, PETRI_TRANSITIONS=138} [2024-11-09 15:15:18,445 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 102 predicate places. [2024-11-09 15:15:18,446 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 138 transitions, 932 flow [2024-11-09 15:15:18,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.76923076923077) internal successors, (296), 13 states have internal predecessors, (296), 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 15:15:18,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:18,446 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:18,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 15:15:18,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:18,647 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:15:18,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:18,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1148191698, now seen corresponding path program 1 times [2024-11-09 15:15:18,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:18,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416368614] [2024-11-09 15:15:18,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:18,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:18,757 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 15:15:18,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:18,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416368614] [2024-11-09 15:15:18,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416368614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:18,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196601181] [2024-11-09 15:15:18,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:18,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:18,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:18,760 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:18,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 15:15:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:18,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 15:15:18,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:19,005 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 15:15:19,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:19,108 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 15:15:19,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196601181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:19,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:19,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-09 15:15:19,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551623888] [2024-11-09 15:15:19,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:19,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 15:15:19,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:19,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 15:15:19,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2024-11-09 15:15:19,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-11-09 15:15:19,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 138 transitions, 932 flow. Second operand has 19 states, 19 states have (on average 22.210526315789473) internal successors, (422), 19 states have internal predecessors, (422), 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 15:15:19,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:19,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-11-09 15:15:19,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand