./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 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-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-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:09:04,399 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:09:04,484 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:09:04,492 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:09:04,492 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:09:04,530 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:09:04,530 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:09:04,531 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:09:04,532 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:09:04,533 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:09:04,533 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:09:04,534 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:09:04,534 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:09:04,535 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:09:04,535 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:09:04,535 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:09:04,536 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:09:04,536 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:09:04,536 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:09:04,537 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:09:04,537 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:09:04,541 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:09:04,542 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:09:04,542 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:09:04,542 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:09:04,542 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:09:04,543 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:09:04,543 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:09:04,543 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:09:04,543 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:09:04,544 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:09:04,544 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:09:04,544 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:09:04,544 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:09:04,545 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:09:04,545 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:09:04,549 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:09:04,549 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:09:04,549 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:09:04,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:09:04,550 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:09:04,550 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:09:04,550 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:09:04,550 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:09:04,551 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 [2024-11-19 14:09:04,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:09:04,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:09:04,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:09:04,825 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:09:04,826 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:09:04,828 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-11-19 14:09:06,376 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:09:06,594 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:09:06,594 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-11-19 14:09:06,608 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4eecfcf0/fcbb160416bc4326903a83767ebde3e3/FLAGcfb9cdaaa [2024-11-19 14:09:06,624 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4eecfcf0/fcbb160416bc4326903a83767ebde3e3 [2024-11-19 14:09:06,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:09:06,629 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:09:06,631 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:09:06,631 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:09:06,637 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:09:06,638 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:09:06" (1/1) ... [2024-11-19 14:09:06,639 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c7a90ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:06, skipping insertion in model container [2024-11-19 14:09:06,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:09:06" (1/1) ... [2024-11-19 14:09:06,666 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:09:06,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:09:06,898 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:09:06,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:09:06,936 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:09:06,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:06 WrapperNode [2024-11-19 14:09:06,937 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:09:06,938 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:09:06,938 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:09:06,938 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:09:06,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:06" (1/1) ... [2024-11-19 14:09:06,957 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:06" (1/1) ... [2024-11-19 14:09:06,978 INFO L138 Inliner]: procedures = 23, calls = 21, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 115 [2024-11-19 14:09:06,978 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:09:06,979 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:09:06,979 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:09:06,979 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:09:06,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:06" (1/1) ... [2024-11-19 14:09:06,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:06" (1/1) ... [2024-11-19 14:09:06,992 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:06" (1/1) ... [2024-11-19 14:09:07,005 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]. [2024-11-19 14:09:07,005 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:06" (1/1) ... [2024-11-19 14:09:07,006 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:06" (1/1) ... [2024-11-19 14:09:07,014 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:06" (1/1) ... [2024-11-19 14:09:07,018 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:06" (1/1) ... [2024-11-19 14:09:07,020 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:06" (1/1) ... [2024-11-19 14:09:07,022 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:06" (1/1) ... [2024-11-19 14:09:07,024 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:09:07,025 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:09:07,026 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:09:07,026 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:09:07,027 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:06" (1/1) ... [2024-11-19 14:09:07,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:09:07,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:07,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 14:09:07,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 14:09:07,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:09:07,169 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:09:07,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:09:07,169 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:09:07,170 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:09:07,170 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 14:09:07,170 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 14:09:07,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:09:07,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:09:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:09:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:09:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:09:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:09:07,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:09:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:09:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:09:07,174 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:09:07,300 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:09:07,303 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:09:07,611 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:09:07,611 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:09:07,840 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:09:07,841 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-19 14:09:07,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:09:07 BoogieIcfgContainer [2024-11-19 14:09:07,841 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:09:07,844 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:09:07,844 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:09:07,850 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:09:07,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:09:06" (1/3) ... [2024-11-19 14:09:07,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df1c400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:09:07, skipping insertion in model container [2024-11-19 14:09:07,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:06" (2/3) ... [2024-11-19 14:09:07,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df1c400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:09:07, skipping insertion in model container [2024-11-19 14:09:07,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:09:07" (3/3) ... [2024-11-19 14:09:07,853 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2024-11-19 14:09:07,870 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:09:07,870 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-19 14:09:07,871 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:09:07,929 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 14:09:07,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 59 transitions, 139 flow [2024-11-19 14:09:08,011 INFO L124 PetriNetUnfolderBase]: 6/56 cut-off events. [2024-11-19 14:09:08,012 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 14:09:08,016 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. [2024-11-19 14:09:08,017 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 59 transitions, 139 flow [2024-11-19 14:09:08,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 54 transitions, 123 flow [2024-11-19 14:09:08,036 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:09:08,042 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;@14bb8d70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:09:08,043 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-19 14:09:08,046 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:09:08,050 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:09:08,050 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:09:08,051 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:08,051 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:09:08,052 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 14:09:08,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:08,058 INFO L85 PathProgramCache]: Analyzing trace with hash 497041, now seen corresponding path program 1 times [2024-11-19 14:09:08,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:08,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545983236] [2024-11-19 14:09:08,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:08,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:08,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:08,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:08,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545983236] [2024-11-19 14:09:08,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545983236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:08,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:08,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:09:08,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67281636] [2024-11-19 14:09:08,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:08,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:08,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:08,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:08,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:08,456 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-19 14:09:08,459 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) [2024-11-19 14:09:08,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:08,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-19 14:09:08,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:08,834 INFO L124 PetriNetUnfolderBase]: 815/1704 cut-off events. [2024-11-19 14:09:08,834 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-11-19 14:09:08,870 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. [2024-11-19 14:09:08,881 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 33 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2024-11-19 14:09:08,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 215 flow [2024-11-19 14:09:08,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:08,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:08,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-11-19 14:09:08,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.576271186440678 [2024-11-19 14:09:08,898 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 123 flow. Second operand 4 states and 136 transitions. [2024-11-19 14:09:08,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 215 flow [2024-11-19 14:09:08,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 206 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 14:09:08,907 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 174 flow [2024-11-19 14:09:08,911 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} [2024-11-19 14:09:08,915 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2024-11-19 14:09:08,915 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 174 flow [2024-11-19 14:09:08,916 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) [2024-11-19 14:09:08,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:08,916 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 14:09:08,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:09:08,917 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 14:09:08,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:08,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1922932052, now seen corresponding path program 1 times [2024-11-19 14:09:08,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:08,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75100794] [2024-11-19 14:09:08,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:08,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:09,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:09,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75100794] [2024-11-19 14:09:09,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75100794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:09,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282606273] [2024-11-19 14:09:09,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:09,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:09,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:09,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:09,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:09:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:09,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:09:09,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:09,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:09,259 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:09:09,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282606273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:09,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:09:09,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:09:09,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446005358] [2024-11-19 14:09:09,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:09,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:09:09,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:09,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:09:09,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:09:09,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-19 14:09:09,287 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) [2024-11-19 14:09:09,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:09,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-19 14:09:09,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:09,585 INFO L124 PetriNetUnfolderBase]: 815/1702 cut-off events. [2024-11-19 14:09:09,585 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-19 14:09:09,590 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. [2024-11-19 14:09:09,601 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 26 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2024-11-19 14:09:09,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 242 flow [2024-11-19 14:09:09,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:09:09,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:09:09,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-11-19 14:09:09,605 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5028248587570622 [2024-11-19 14:09:09,606 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 174 flow. Second operand 6 states and 178 transitions. [2024-11-19 14:09:09,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 242 flow [2024-11-19 14:09:09,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 242 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:09:09,610 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 190 flow [2024-11-19 14:09:09,611 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} [2024-11-19 14:09:09,611 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2024-11-19 14:09:09,612 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 190 flow [2024-11-19 14:09:09,612 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) [2024-11-19 14:09:09,612 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:09,613 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:09:09,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:09:09,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:09,815 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 14:09:09,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:09,816 INFO L85 PathProgramCache]: Analyzing trace with hash -518648044, now seen corresponding path program 1 times [2024-11-19 14:09:09,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:09,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393301417] [2024-11-19 14:09:09,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:09,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:09,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:09,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:09,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393301417] [2024-11-19 14:09:09,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393301417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:09,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181258073] [2024-11-19 14:09:09,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:09,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:09,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:09,941 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:09,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:09:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:10,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:09:10,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:10,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:10,052 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:10,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:10,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181258073] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:10,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:10,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:09:10,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645818574] [2024-11-19 14:09:10,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:10,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:09:10,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:10,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:09:10,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:09:10,131 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-19 14:09:10,132 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) [2024-11-19 14:09:10,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:10,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-19 14:09:10,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:10,447 INFO L124 PetriNetUnfolderBase]: 821/1726 cut-off events. [2024-11-19 14:09:10,447 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-11-19 14:09:10,451 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. [2024-11-19 14:09:10,459 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 31 selfloop transitions, 25 changer transitions 0/76 dead transitions. [2024-11-19 14:09:10,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 76 transitions, 416 flow [2024-11-19 14:09:10,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:09:10,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:09:10,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 292 transitions. [2024-11-19 14:09:10,463 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49491525423728816 [2024-11-19 14:09:10,463 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 190 flow. Second operand 10 states and 292 transitions. [2024-11-19 14:09:10,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 76 transitions, 416 flow [2024-11-19 14:09:10,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 358 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-19 14:09:10,469 INFO L231 Difference]: Finished difference. Result has 69 places, 76 transitions, 330 flow [2024-11-19 14:09:10,471 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} [2024-11-19 14:09:10,472 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2024-11-19 14:09:10,472 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 76 transitions, 330 flow [2024-11-19 14:09:10,473 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) [2024-11-19 14:09:10,473 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:10,474 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:10,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 14:09:10,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-19 14:09:10,675 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 14:09:10,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:10,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1949792550, now seen corresponding path program 1 times [2024-11-19 14:09:10,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:10,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360631000] [2024-11-19 14:09:10,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:10,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:10,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:10,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:10,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360631000] [2024-11-19 14:09:10,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360631000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:10,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:10,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:09:10,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331322201] [2024-11-19 14:09:10,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:10,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:10,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:10,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:10,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:10,782 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-19 14:09:10,783 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) [2024-11-19 14:09:10,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:10,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-19 14:09:10,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:11,093 INFO L124 PetriNetUnfolderBase]: 1614/2877 cut-off events. [2024-11-19 14:09:11,094 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-11-19 14:09:11,099 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. [2024-11-19 14:09:11,113 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 86 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2024-11-19 14:09:11,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 584 flow [2024-11-19 14:09:11,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:11,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:11,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-11-19 14:09:11,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.711864406779661 [2024-11-19 14:09:11,115 INFO L175 Difference]: Start difference. First operand has 69 places, 76 transitions, 330 flow. Second operand 4 states and 168 transitions. [2024-11-19 14:09:11,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 584 flow [2024-11-19 14:09:11,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 110 transitions, 560 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-19 14:09:11,119 INFO L231 Difference]: Finished difference. Result has 72 places, 79 transitions, 335 flow [2024-11-19 14:09:11,119 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} [2024-11-19 14:09:11,120 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2024-11-19 14:09:11,120 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 79 transitions, 335 flow [2024-11-19 14:09:11,120 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) [2024-11-19 14:09:11,120 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:11,121 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:11,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:09:11,121 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 14:09:11,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:11,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1550700886, now seen corresponding path program 1 times [2024-11-19 14:09:11,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:11,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278997501] [2024-11-19 14:09:11,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:11,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:11,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:11,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:11,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278997501] [2024-11-19 14:09:11,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278997501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:11,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:11,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:09:11,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222839899] [2024-11-19 14:09:11,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:11,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:11,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:11,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:11,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:11,215 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-19 14:09:11,216 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) [2024-11-19 14:09:11,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:11,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-19 14:09:11,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:11,786 INFO L124 PetriNetUnfolderBase]: 3211/5700 cut-off events. [2024-11-19 14:09:11,787 INFO L125 PetriNetUnfolderBase]: For 1667/1845 co-relation queries the response was YES. [2024-11-19 14:09:11,799 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. [2024-11-19 14:09:11,835 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 95 selfloop transitions, 4 changer transitions 0/118 dead transitions. [2024-11-19 14:09:11,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 118 transitions, 655 flow [2024-11-19 14:09:11,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:11,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:11,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-19 14:09:11,838 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6949152542372882 [2024-11-19 14:09:11,838 INFO L175 Difference]: Start difference. First operand has 72 places, 79 transitions, 335 flow. Second operand 4 states and 164 transitions. [2024-11-19 14:09:11,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 118 transitions, 655 flow [2024-11-19 14:09:11,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 118 transitions, 646 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:09:11,848 INFO L231 Difference]: Finished difference. Result has 76 places, 82 transitions, 361 flow [2024-11-19 14:09:11,848 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} [2024-11-19 14:09:11,850 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 18 predicate places. [2024-11-19 14:09:11,851 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 82 transitions, 361 flow [2024-11-19 14:09:11,851 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) [2024-11-19 14:09:11,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:11,851 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:11,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:09:11,852 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 14:09:11,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:11,853 INFO L85 PathProgramCache]: Analyzing trace with hash -854234206, now seen corresponding path program 1 times [2024-11-19 14:09:11,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:11,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173790975] [2024-11-19 14:09:11,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:11,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:11,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:09:11,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:11,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173790975] [2024-11-19 14:09:11,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173790975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:11,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:11,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:09:11,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877725564] [2024-11-19 14:09:11,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:11,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:09:11,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:11,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:09:11,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:09:11,997 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2024-11-19 14:09:11,998 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) [2024-11-19 14:09:11,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:11,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2024-11-19 14:09:11,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:12,681 INFO L124 PetriNetUnfolderBase]: 3434/6861 cut-off events. [2024-11-19 14:09:12,682 INFO L125 PetriNetUnfolderBase]: For 2245/2247 co-relation queries the response was YES. [2024-11-19 14:09:12,698 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. [2024-11-19 14:09:12,728 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 88 selfloop transitions, 12 changer transitions 0/122 dead transitions. [2024-11-19 14:09:12,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 122 transitions, 683 flow [2024-11-19 14:09:12,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:09:12,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:09:12,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2024-11-19 14:09:12,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.652542372881356 [2024-11-19 14:09:12,731 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 361 flow. Second operand 6 states and 231 transitions. [2024-11-19 14:09:12,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 122 transitions, 683 flow [2024-11-19 14:09:12,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 122 transitions, 674 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:09:12,739 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 411 flow [2024-11-19 14:09:12,739 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} [2024-11-19 14:09:12,741 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 25 predicate places. [2024-11-19 14:09:12,742 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 411 flow [2024-11-19 14:09:12,742 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) [2024-11-19 14:09:12,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:12,743 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:12,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:09:12,743 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 14:09:12,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:12,745 INFO L85 PathProgramCache]: Analyzing trace with hash -960567286, now seen corresponding path program 1 times [2024-11-19 14:09:12,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:12,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177617124] [2024-11-19 14:09:12,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:12,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:12,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:12,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:12,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177617124] [2024-11-19 14:09:12,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177617124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:12,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:12,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:09:12,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893725690] [2024-11-19 14:09:12,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:12,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:12,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:12,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:12,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:12,821 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-19 14:09:12,823 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) [2024-11-19 14:09:12,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:12,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-19 14:09:12,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:13,549 INFO L124 PetriNetUnfolderBase]: 3544/6859 cut-off events. [2024-11-19 14:09:13,550 INFO L125 PetriNetUnfolderBase]: For 3999/4315 co-relation queries the response was YES. [2024-11-19 14:09:13,576 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. [2024-11-19 14:09:13,621 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 96 selfloop transitions, 4 changer transitions 2/123 dead transitions. [2024-11-19 14:09:13,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 123 transitions, 765 flow [2024-11-19 14:09:13,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:13,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:13,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2024-11-19 14:09:13,622 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6864406779661016 [2024-11-19 14:09:13,623 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 411 flow. Second operand 4 states and 162 transitions. [2024-11-19 14:09:13,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 123 transitions, 765 flow [2024-11-19 14:09:13,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 123 transitions, 747 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-19 14:09:13,631 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 418 flow [2024-11-19 14:09:13,632 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} [2024-11-19 14:09:13,633 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2024-11-19 14:09:13,634 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 418 flow [2024-11-19 14:09:13,634 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) [2024-11-19 14:09:13,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:13,635 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-19 14:09:13,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 14:09:13,635 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 14:09:13,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:13,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1046268873, now seen corresponding path program 2 times [2024-11-19 14:09:13,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:13,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241510334] [2024-11-19 14:09:13,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:13,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:13,653 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:09:13,653 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:13,761 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:09:13,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:13,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241510334] [2024-11-19 14:09:13,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241510334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:13,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003442153] [2024-11-19 14:09:13,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:13,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:13,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:13,767 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:13,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:09:13,833 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:09:13,834 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:13,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:09:13,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:13,866 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:09:13,866 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:13,893 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:09:13,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003442153] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:13,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:13,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-19 14:09:13,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786680224] [2024-11-19 14:09:13,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:13,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:13,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:13,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:13,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:13,906 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-19 14:09:13,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 418 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:13,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:13,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-19 14:09:13,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:14,417 INFO L124 PetriNetUnfolderBase]: 2661/5153 cut-off events. [2024-11-19 14:09:14,418 INFO L125 PetriNetUnfolderBase]: For 3140/3381 co-relation queries the response was YES. [2024-11-19 14:09:14,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12428 conditions, 5153 events. 2661/5153 cut-off events. For 3140/3381 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 34866 event pairs, 2011 based on Foata normal form. 102/5022 useless extension candidates. Maximal degree in co-relation 12358. Up to 3804 conditions per place. [2024-11-19 14:09:14,452 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 48 selfloop transitions, 16 changer transitions 0/87 dead transitions. [2024-11-19 14:09:14,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 536 flow [2024-11-19 14:09:14,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:14,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:14,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-11-19 14:09:14,454 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5254237288135594 [2024-11-19 14:09:14,454 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 418 flow. Second operand 4 states and 124 transitions. [2024-11-19 14:09:14,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 536 flow [2024-11-19 14:09:14,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 87 transitions, 536 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:09:14,465 INFO L231 Difference]: Finished difference. Result has 88 places, 87 transitions, 440 flow [2024-11-19 14:09:14,466 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=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=440, PETRI_PLACES=88, PETRI_TRANSITIONS=87} [2024-11-19 14:09:14,466 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 30 predicate places. [2024-11-19 14:09:14,466 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 87 transitions, 440 flow [2024-11-19 14:09:14,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:14,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:14,467 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:14,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 14:09:14,671 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 [2024-11-19 14:09:14,672 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 14:09:14,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:14,673 INFO L85 PathProgramCache]: Analyzing trace with hash 530879877, now seen corresponding path program 1 times [2024-11-19 14:09:14,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:14,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320452295] [2024-11-19 14:09:14,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:14,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:14,755 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:09:14,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:14,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320452295] [2024-11-19 14:09:14,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320452295] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:14,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434662945] [2024-11-19 14:09:14,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:14,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:14,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:14,758 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:14,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:09:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:14,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 14:09:14,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:14,996 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:14,997 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:15,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434662945] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:15,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:15,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-19 14:09:15,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021531302] [2024-11-19 14:09:15,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:15,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 14:09:15,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:15,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 14:09:15,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-19 14:09:15,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 59 [2024-11-19 14:09:15,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 87 transitions, 440 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) [2024-11-19 14:09:15,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:15,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 59 [2024-11-19 14:09:15,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:16,836 INFO L124 PetriNetUnfolderBase]: 4944/8574 cut-off events. [2024-11-19 14:09:16,837 INFO L125 PetriNetUnfolderBase]: For 4569/4988 co-relation queries the response was YES. [2024-11-19 14:09:16,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21277 conditions, 8574 events. 4944/8574 cut-off events. For 4569/4988 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 56523 event pairs, 1089 based on Foata normal form. 376/8609 useless extension candidates. Maximal degree in co-relation 21172. Up to 1524 conditions per place. [2024-11-19 14:09:16,914 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 192 selfloop transitions, 46 changer transitions 0/258 dead transitions. [2024-11-19 14:09:16,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 258 transitions, 1506 flow [2024-11-19 14:09:16,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 14:09:16,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-19 14:09:16,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 532 transitions. [2024-11-19 14:09:16,917 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5304087736789631 [2024-11-19 14:09:16,917 INFO L175 Difference]: Start difference. First operand has 88 places, 87 transitions, 440 flow. Second operand 17 states and 532 transitions. [2024-11-19 14:09:16,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 258 transitions, 1506 flow [2024-11-19 14:09:16,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 258 transitions, 1474 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:09:16,934 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 645 flow [2024-11-19 14:09:16,935 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=645, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2024-11-19 14:09:16,935 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 45 predicate places. [2024-11-19 14:09:16,936 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 645 flow [2024-11-19 14:09:16,936 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) [2024-11-19 14:09:16,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:16,936 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:16,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 14:09:17,140 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 [2024-11-19 14:09:17,141 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 14:09:17,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:17,142 INFO L85 PathProgramCache]: Analyzing trace with hash -534908810, now seen corresponding path program 1 times [2024-11-19 14:09:17,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:17,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375933936] [2024-11-19 14:09:17,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:17,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:17,342 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 14:09:17,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:17,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375933936] [2024-11-19 14:09:17,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375933936] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:17,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232687691] [2024-11-19 14:09:17,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:17,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:17,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:17,346 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:17,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 14:09:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:17,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 14:09:17,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:17,540 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 14:09:17,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:17,651 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 14:09:17,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232687691] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:17,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:17,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-11-19 14:09:17,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826716091] [2024-11-19 14:09:17,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:17,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 14:09:17,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:17,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 14:09:17,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-19 14:09:17,826 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-19 14:09:17,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 645 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) [2024-11-19 14:09:17,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:17,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-19 14:09:17,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:18,736 INFO L124 PetriNetUnfolderBase]: 4371/8192 cut-off events. [2024-11-19 14:09:18,736 INFO L125 PetriNetUnfolderBase]: For 9116/9513 co-relation queries the response was YES. [2024-11-19 14:09:18,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21233 conditions, 8192 events. 4371/8192 cut-off events. For 9116/9513 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 57748 event pairs, 3459 based on Foata normal form. 136/7932 useless extension candidates. Maximal degree in co-relation 21142. Up to 3136 conditions per place. [2024-11-19 14:09:18,818 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 64 selfloop transitions, 31 changer transitions 0/117 dead transitions. [2024-11-19 14:09:18,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 117 transitions, 838 flow [2024-11-19 14:09:18,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 14:09:18,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 14:09:18,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 325 transitions. [2024-11-19 14:09:18,820 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5007704160246533 [2024-11-19 14:09:18,820 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 645 flow. Second operand 11 states and 325 transitions. [2024-11-19 14:09:18,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 117 transitions, 838 flow [2024-11-19 14:09:18,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 117 transitions, 743 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-11-19 14:09:18,841 INFO L231 Difference]: Finished difference. Result has 106 places, 95 transitions, 553 flow [2024-11-19 14:09:18,841 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=553, PETRI_PLACES=106, PETRI_TRANSITIONS=95} [2024-11-19 14:09:18,842 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 48 predicate places. [2024-11-19 14:09:18,842 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 95 transitions, 553 flow [2024-11-19 14:09:18,842 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) [2024-11-19 14:09:18,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:18,843 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] [2024-11-19 14:09:18,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 14:09:19,046 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,SelfDestructingSolverStorable9 [2024-11-19 14:09:19,048 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 14:09:19,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:19,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1301865447, now seen corresponding path program 1 times [2024-11-19 14:09:19,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:19,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019110642] [2024-11-19 14:09:19,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:19,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:19,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:19,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:19,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019110642] [2024-11-19 14:09:19,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019110642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:19,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:19,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 14:09:19,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632855360] [2024-11-19 14:09:19,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:19,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:09:19,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:19,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:09:19,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:09:19,164 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-19 14:09:19,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 95 transitions, 553 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) [2024-11-19 14:09:19,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:19,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-19 14:09:19,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:20,118 INFO L124 PetriNetUnfolderBase]: 7494/13857 cut-off events. [2024-11-19 14:09:20,119 INFO L125 PetriNetUnfolderBase]: For 9422/10110 co-relation queries the response was YES. [2024-11-19 14:09:20,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34222 conditions, 13857 events. 7494/13857 cut-off events. For 9422/10110 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 107184 event pairs, 2583 based on Foata normal form. 484/14161 useless extension candidates. Maximal degree in co-relation 34137. Up to 6216 conditions per place. [2024-11-19 14:09:20,229 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 162 selfloop transitions, 11 changer transitions 0/192 dead transitions. [2024-11-19 14:09:20,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 192 transitions, 1323 flow [2024-11-19 14:09:20,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:09:20,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:09:20,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 243 transitions. [2024-11-19 14:09:20,231 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6864406779661016 [2024-11-19 14:09:20,231 INFO L175 Difference]: Start difference. First operand has 106 places, 95 transitions, 553 flow. Second operand 6 states and 243 transitions. [2024-11-19 14:09:20,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 192 transitions, 1323 flow [2024-11-19 14:09:20,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 192 transitions, 1249 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-11-19 14:09:20,258 INFO L231 Difference]: Finished difference. Result has 104 places, 103 transitions, 564 flow [2024-11-19 14:09:20,258 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=564, PETRI_PLACES=104, PETRI_TRANSITIONS=103} [2024-11-19 14:09:20,259 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 46 predicate places. [2024-11-19 14:09:20,259 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 103 transitions, 564 flow [2024-11-19 14:09:20,259 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) [2024-11-19 14:09:20,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:20,259 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] [2024-11-19 14:09:20,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 14:09:20,260 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 14:09:20,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:20,260 INFO L85 PathProgramCache]: Analyzing trace with hash -121098323, now seen corresponding path program 2 times [2024-11-19 14:09:20,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:20,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379961591] [2024-11-19 14:09:20,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:20,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:20,274 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:09:20,274 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:20,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:20,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:20,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379961591] [2024-11-19 14:09:20,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379961591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:20,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:20,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 14:09:20,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054843144] [2024-11-19 14:09:20,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:20,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:09:20,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:20,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:09:20,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:09:20,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-19 14:09:20,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 103 transitions, 564 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) [2024-11-19 14:09:20,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:20,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-19 14:09:20,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:22,003 INFO L124 PetriNetUnfolderBase]: 10898/19720 cut-off events. [2024-11-19 14:09:22,003 INFO L125 PetriNetUnfolderBase]: For 22568/24118 co-relation queries the response was YES. [2024-11-19 14:09:22,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51902 conditions, 19720 events. 10898/19720 cut-off events. For 22568/24118 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 154076 event pairs, 4155 based on Foata normal form. 684/19782 useless extension candidates. Maximal degree in co-relation 51824. Up to 6748 conditions per place. [2024-11-19 14:09:22,124 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 165 selfloop transitions, 11 changer transitions 0/195 dead transitions. [2024-11-19 14:09:22,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 195 transitions, 1343 flow [2024-11-19 14:09:22,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:09:22,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:09:22,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 237 transitions. [2024-11-19 14:09:22,126 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6694915254237288 [2024-11-19 14:09:22,126 INFO L175 Difference]: Start difference. First operand has 104 places, 103 transitions, 564 flow. Second operand 6 states and 237 transitions. [2024-11-19 14:09:22,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 195 transitions, 1343 flow [2024-11-19 14:09:22,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 195 transitions, 1332 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 14:09:22,169 INFO L231 Difference]: Finished difference. Result has 112 places, 108 transitions, 636 flow [2024-11-19 14:09:22,170 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=636, PETRI_PLACES=112, PETRI_TRANSITIONS=108} [2024-11-19 14:09:22,170 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 54 predicate places. [2024-11-19 14:09:22,170 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 108 transitions, 636 flow [2024-11-19 14:09:22,170 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) [2024-11-19 14:09:22,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:22,171 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] [2024-11-19 14:09:22,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 14:09:22,171 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 14:09:22,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:22,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1983080157, now seen corresponding path program 3 times [2024-11-19 14:09:22,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:22,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775745373] [2024-11-19 14:09:22,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 14:09:22,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:22,186 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 14:09:22,187 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:22,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:22,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:22,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775745373] [2024-11-19 14:09:22,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775745373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:22,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:22,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 14:09:22,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078765965] [2024-11-19 14:09:22,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:22,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:09:22,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:22,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:09:22,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:09:22,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-19 14:09:22,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 108 transitions, 636 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) [2024-11-19 14:09:22,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:22,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-19 14:09:22,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:24,170 INFO L124 PetriNetUnfolderBase]: 11388/20837 cut-off events. [2024-11-19 14:09:24,170 INFO L125 PetriNetUnfolderBase]: For 38092/39472 co-relation queries the response was YES. [2024-11-19 14:09:24,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56975 conditions, 20837 events. 11388/20837 cut-off events. For 38092/39472 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 161462 event pairs, 2425 based on Foata normal form. 364/20635 useless extension candidates. Maximal degree in co-relation 56893. Up to 8415 conditions per place. [2024-11-19 14:09:24,421 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 158 selfloop transitions, 18 changer transitions 1/196 dead transitions. [2024-11-19 14:09:24,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 196 transitions, 1392 flow [2024-11-19 14:09:24,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:09:24,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:09:24,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 241 transitions. [2024-11-19 14:09:24,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6807909604519774 [2024-11-19 14:09:24,423 INFO L175 Difference]: Start difference. First operand has 112 places, 108 transitions, 636 flow. Second operand 6 states and 241 transitions. [2024-11-19 14:09:24,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 196 transitions, 1392 flow [2024-11-19 14:09:24,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 196 transitions, 1371 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-19 14:09:24,471 INFO L231 Difference]: Finished difference. Result has 118 places, 110 transitions, 701 flow [2024-11-19 14:09:24,471 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=701, PETRI_PLACES=118, PETRI_TRANSITIONS=110} [2024-11-19 14:09:24,471 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 60 predicate places. [2024-11-19 14:09:24,471 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 110 transitions, 701 flow [2024-11-19 14:09:24,472 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) [2024-11-19 14:09:24,472 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:24,472 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:24,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 14:09:24,472 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 14:09:24,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:24,472 INFO L85 PathProgramCache]: Analyzing trace with hash -183390428, now seen corresponding path program 1 times [2024-11-19 14:09:24,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:24,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106627697] [2024-11-19 14:09:24,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:24,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:24,549 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 14:09:24,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:24,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106627697] [2024-11-19 14:09:24,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106627697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:24,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:24,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:09:24,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005655834] [2024-11-19 14:09:24,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:24,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:09:24,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:24,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:09:24,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:09:24,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2024-11-19 14:09:24,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 110 transitions, 701 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) [2024-11-19 14:09:24,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:24,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2024-11-19 14:09:24,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:26,181 INFO L124 PetriNetUnfolderBase]: 9843/18135 cut-off events. [2024-11-19 14:09:26,182 INFO L125 PetriNetUnfolderBase]: For 31384/32501 co-relation queries the response was YES. [2024-11-19 14:09:26,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49447 conditions, 18135 events. 9843/18135 cut-off events. For 31384/32501 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 136906 event pairs, 8003 based on Foata normal form. 147/17704 useless extension candidates. Maximal degree in co-relation 49363. Up to 13658 conditions per place. [2024-11-19 14:09:26,307 INFO L140 encePairwiseOnDemand]: 51/59 looper letters, 69 selfloop transitions, 8 changer transitions 29/133 dead transitions. [2024-11-19 14:09:26,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 133 transitions, 1053 flow [2024-11-19 14:09:26,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:09:26,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:09:26,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2024-11-19 14:09:26,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6129943502824858 [2024-11-19 14:09:26,308 INFO L175 Difference]: Start difference. First operand has 118 places, 110 transitions, 701 flow. Second operand 6 states and 217 transitions. [2024-11-19 14:09:26,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 133 transitions, 1053 flow [2024-11-19 14:09:26,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 133 transitions, 997 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-19 14:09:26,369 INFO L231 Difference]: Finished difference. Result has 121 places, 104 transitions, 646 flow [2024-11-19 14:09:26,369 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=646, PETRI_PLACES=121, PETRI_TRANSITIONS=104} [2024-11-19 14:09:26,370 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 63 predicate places. [2024-11-19 14:09:26,370 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 104 transitions, 646 flow [2024-11-19 14:09:26,370 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) [2024-11-19 14:09:26,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:26,370 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 1, 1, 1] [2024-11-19 14:09:26,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 14:09:26,370 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 14:09:26,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:26,371 INFO L85 PathProgramCache]: Analyzing trace with hash -459929837, now seen corresponding path program 2 times [2024-11-19 14:09:26,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:26,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79563571] [2024-11-19 14:09:26,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:26,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:26,383 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:09:26,384 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:26,428 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-19 14:09:26,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:26,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79563571] [2024-11-19 14:09:26,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79563571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:26,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373617790] [2024-11-19 14:09:26,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:26,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:26,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:26,431 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:26,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 14:09:26,503 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:09:26,504 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:26,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:09:26,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-19 14:09:26,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-19 14:09:26,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373617790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:26,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:26,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-19 14:09:26,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290730517] [2024-11-19 14:09:26,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:26,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:09:26,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:26,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:09:26,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:09:26,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-19 14:09:26,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 104 transitions, 646 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:26,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:26,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-19 14:09:26,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:28,049 INFO L124 PetriNetUnfolderBase]: 7918/14961 cut-off events. [2024-11-19 14:09:28,049 INFO L125 PetriNetUnfolderBase]: For 21653/22864 co-relation queries the response was YES. [2024-11-19 14:09:28,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40160 conditions, 14961 events. 7918/14961 cut-off events. For 21653/22864 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 115103 event pairs, 6420 based on Foata normal form. 107/14553 useless extension candidates. Maximal degree in co-relation 40079. Up to 11139 conditions per place. [2024-11-19 14:09:28,166 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 48 selfloop transitions, 28 changer transitions 0/103 dead transitions. [2024-11-19 14:09:28,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 103 transitions, 788 flow [2024-11-19 14:09:28,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:09:28,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:09:28,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-11-19 14:09:28,168 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49491525423728816 [2024-11-19 14:09:28,168 INFO L175 Difference]: Start difference. First operand has 121 places, 104 transitions, 646 flow. Second operand 5 states and 146 transitions. [2024-11-19 14:09:28,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 103 transitions, 788 flow [2024-11-19 14:09:28,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 103 transitions, 726 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-11-19 14:09:28,214 INFO L231 Difference]: Finished difference. Result has 107 places, 103 transitions, 630 flow [2024-11-19 14:09:28,215 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=630, PETRI_PLACES=107, PETRI_TRANSITIONS=103} [2024-11-19 14:09:28,215 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 49 predicate places. [2024-11-19 14:09:28,216 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 103 transitions, 630 flow [2024-11-19 14:09:28,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:28,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:28,216 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:28,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 14:09:28,420 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 [2024-11-19 14:09:28,421 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 14:09:28,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:28,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1081474090, now seen corresponding path program 1 times [2024-11-19 14:09:28,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:28,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422401612] [2024-11-19 14:09:28,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:28,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:28,502 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 14:09:28,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:28,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422401612] [2024-11-19 14:09:28,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422401612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:28,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39110011] [2024-11-19 14:09:28,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:28,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:28,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:28,505 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) [2024-11-19 14:09:28,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 14:09:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:28,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:09:28,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:28,651 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 14:09:28,651 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:28,696 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 14:09:28,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39110011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:28,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:28,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 14:09:28,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75030598] [2024-11-19 14:09:28,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:28,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:09:28,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:28,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:09:28,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:09:28,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-19 14:09:28,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 103 transitions, 630 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) [2024-11-19 14:09:28,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:28,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-19 14:09:28,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:30,964 INFO L124 PetriNetUnfolderBase]: 13203/23898 cut-off events. [2024-11-19 14:09:30,965 INFO L125 PetriNetUnfolderBase]: For 28481/29629 co-relation queries the response was YES. [2024-11-19 14:09:31,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62113 conditions, 23898 events. 13203/23898 cut-off events. For 28481/29629 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 184550 event pairs, 3435 based on Foata normal form. 845/24322 useless extension candidates. Maximal degree in co-relation 46921. Up to 7655 conditions per place. [2024-11-19 14:09:31,105 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 296 selfloop transitions, 18 changer transitions 0/340 dead transitions. [2024-11-19 14:09:31,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 340 transitions, 2716 flow [2024-11-19 14:09:31,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:09:31,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:09:31,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 420 transitions. [2024-11-19 14:09:31,107 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.711864406779661 [2024-11-19 14:09:31,107 INFO L175 Difference]: Start difference. First operand has 107 places, 103 transitions, 630 flow. Second operand 10 states and 420 transitions. [2024-11-19 14:09:31,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 340 transitions, 2716 flow [2024-11-19 14:09:31,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 340 transitions, 2665 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:09:31,136 INFO L231 Difference]: Finished difference. Result has 116 places, 112 transitions, 675 flow [2024-11-19 14:09:31,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=675, PETRI_PLACES=116, PETRI_TRANSITIONS=112} [2024-11-19 14:09:31,137 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 58 predicate places. [2024-11-19 14:09:31,137 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 112 transitions, 675 flow [2024-11-19 14:09:31,137 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) [2024-11-19 14:09:31,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:31,137 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] [2024-11-19 14:09:31,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 14:09:31,338 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 [2024-11-19 14:09:31,338 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 14:09:31,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:31,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1223277049, now seen corresponding path program 1 times [2024-11-19 14:09:31,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:31,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593471162] [2024-11-19 14:09:31,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:31,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:31,427 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:09:31,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:31,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593471162] [2024-11-19 14:09:31,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593471162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:31,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160357113] [2024-11-19 14:09:31,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:31,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:31,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:31,430 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) [2024-11-19 14:09:31,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 14:09:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:31,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 14:09:31,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:31,632 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:31,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:31,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160357113] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:31,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:31,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-19 14:09:31,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698906190] [2024-11-19 14:09:31,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:31,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 14:09:31,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:31,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 14:09:31,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-19 14:09:31,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-11-19 14:09:31,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 112 transitions, 675 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) [2024-11-19 14:09:31,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:31,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-11-19 14:09:31,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:35,176 INFO L124 PetriNetUnfolderBase]: 16446/28166 cut-off events. [2024-11-19 14:09:35,176 INFO L125 PetriNetUnfolderBase]: For 48413/48745 co-relation queries the response was YES. [2024-11-19 14:09:35,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80894 conditions, 28166 events. 16446/28166 cut-off events. For 48413/48745 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 205421 event pairs, 2637 based on Foata normal form. 481/27637 useless extension candidates. Maximal degree in co-relation 72439. Up to 9964 conditions per place. [2024-11-19 14:09:35,362 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 171 selfloop transitions, 35 changer transitions 65/293 dead transitions. [2024-11-19 14:09:35,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 293 transitions, 2239 flow [2024-11-19 14:09:35,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 14:09:35,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-19 14:09:35,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 483 transitions. [2024-11-19 14:09:35,364 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.481555333998006 [2024-11-19 14:09:35,364 INFO L175 Difference]: Start difference. First operand has 116 places, 112 transitions, 675 flow. Second operand 17 states and 483 transitions. [2024-11-19 14:09:35,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 293 transitions, 2239 flow [2024-11-19 14:09:35,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 293 transitions, 2153 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-11-19 14:09:35,465 INFO L231 Difference]: Finished difference. Result has 130 places, 101 transitions, 662 flow [2024-11-19 14:09:35,465 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=662, PETRI_PLACES=130, PETRI_TRANSITIONS=101} [2024-11-19 14:09:35,466 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 72 predicate places. [2024-11-19 14:09:35,466 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 101 transitions, 662 flow [2024-11-19 14:09:35,467 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) [2024-11-19 14:09:35,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:35,467 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] [2024-11-19 14:09:35,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 14:09:35,671 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 [2024-11-19 14:09:35,671 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 14:09:35,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:35,672 INFO L85 PathProgramCache]: Analyzing trace with hash 781914272, now seen corresponding path program 1 times [2024-11-19 14:09:35,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:35,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102092855] [2024-11-19 14:09:35,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:35,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:35,771 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 14:09:35,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:35,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102092855] [2024-11-19 14:09:35,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102092855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:35,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556612408] [2024-11-19 14:09:35,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:35,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:35,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:35,774 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) [2024-11-19 14:09:35,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 14:09:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:35,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:09:35,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 14:09:35,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:35,934 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 14:09:35,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556612408] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:35,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:35,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 14:09:35,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101549828] [2024-11-19 14:09:35,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:35,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:09:35,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:35,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:09:35,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:09:35,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-19 14:09:35,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 101 transitions, 662 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) [2024-11-19 14:09:35,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:35,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-19 14:09:35,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:40,052 INFO L124 PetriNetUnfolderBase]: 22623/39138 cut-off events. [2024-11-19 14:09:40,052 INFO L125 PetriNetUnfolderBase]: For 63815/64597 co-relation queries the response was YES. [2024-11-19 14:09:40,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114782 conditions, 39138 events. 22623/39138 cut-off events. For 63815/64597 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 304273 event pairs, 4945 based on Foata normal form. 1134/39742 useless extension candidates. Maximal degree in co-relation 114666. Up to 11393 conditions per place. [2024-11-19 14:09:40,404 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 284 selfloop transitions, 19 changer transitions 0/326 dead transitions. [2024-11-19 14:09:40,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 326 transitions, 2418 flow [2024-11-19 14:09:40,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:09:40,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:09:40,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 401 transitions. [2024-11-19 14:09:40,406 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6796610169491526 [2024-11-19 14:09:40,406 INFO L175 Difference]: Start difference. First operand has 130 places, 101 transitions, 662 flow. Second operand 10 states and 401 transitions. [2024-11-19 14:09:40,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 326 transitions, 2418 flow [2024-11-19 14:09:40,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 326 transitions, 2349 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-11-19 14:09:40,488 INFO L231 Difference]: Finished difference. Result has 118 places, 110 transitions, 703 flow [2024-11-19 14:09:40,488 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=703, PETRI_PLACES=118, PETRI_TRANSITIONS=110} [2024-11-19 14:09:40,489 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 60 predicate places. [2024-11-19 14:09:40,489 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 110 transitions, 703 flow [2024-11-19 14:09:40,489 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) [2024-11-19 14:09:40,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:40,489 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] [2024-11-19 14:09:40,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 14:09:40,693 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 [2024-11-19 14:09:40,694 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 14:09:40,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:40,694 INFO L85 PathProgramCache]: Analyzing trace with hash -91246797, now seen corresponding path program 1 times [2024-11-19 14:09:40,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:40,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914305957] [2024-11-19 14:09:40,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:40,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-19 14:09:40,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:40,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914305957] [2024-11-19 14:09:40,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914305957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:40,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:40,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:09:40,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518909777] [2024-11-19 14:09:40,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:40,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:40,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:40,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:40,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:40,785 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-19 14:09:40,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 110 transitions, 703 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) [2024-11-19 14:09:40,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:40,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-19 14:09:40,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:44,287 INFO L124 PetriNetUnfolderBase]: 20249/34732 cut-off events. [2024-11-19 14:09:44,287 INFO L125 PetriNetUnfolderBase]: For 64589/65388 co-relation queries the response was YES. [2024-11-19 14:09:44,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103963 conditions, 34732 events. 20249/34732 cut-off events. For 64589/65388 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 264183 event pairs, 8985 based on Foata normal form. 868/34765 useless extension candidates. Maximal degree in co-relation 103809. Up to 15019 conditions per place. [2024-11-19 14:09:44,576 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 138 selfloop transitions, 7 changer transitions 0/172 dead transitions. [2024-11-19 14:09:44,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 172 transitions, 1341 flow [2024-11-19 14:09:44,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:44,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:44,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2024-11-19 14:09:44,577 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.690677966101695 [2024-11-19 14:09:44,577 INFO L175 Difference]: Start difference. First operand has 118 places, 110 transitions, 703 flow. Second operand 4 states and 163 transitions. [2024-11-19 14:09:44,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 172 transitions, 1341 flow [2024-11-19 14:09:44,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 172 transitions, 1312 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-19 14:09:44,694 INFO L231 Difference]: Finished difference. Result has 121 places, 111 transitions, 716 flow [2024-11-19 14:09:44,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=716, PETRI_PLACES=121, PETRI_TRANSITIONS=111} [2024-11-19 14:09:44,694 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 63 predicate places. [2024-11-19 14:09:44,694 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 111 transitions, 716 flow [2024-11-19 14:09:44,694 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) [2024-11-19 14:09:44,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:44,695 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:44,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 14:09:44,695 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 14:09:44,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:44,695 INFO L85 PathProgramCache]: Analyzing trace with hash 545324894, now seen corresponding path program 2 times [2024-11-19 14:09:44,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:44,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763640281] [2024-11-19 14:09:44,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:44,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:44,711 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:09:44,711 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-19 14:09:44,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:44,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763640281] [2024-11-19 14:09:44,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763640281] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:44,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926193636] [2024-11-19 14:09:44,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:44,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:44,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:44,746 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) [2024-11-19 14:09:44,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 14:09:44,832 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:09:44,832 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:44,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:09:44,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-19 14:09:44,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:44,938 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-19 14:09:44,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926193636] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:44,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:44,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-19 14:09:44,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091675247] [2024-11-19 14:09:44,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:44,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:09:44,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:44,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:09:44,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:09:44,951 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-19 14:09:44,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 111 transitions, 716 flow. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:44,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:44,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-19 14:09:44,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:48,674 INFO L124 PetriNetUnfolderBase]: 22938/36459 cut-off events. [2024-11-19 14:09:48,675 INFO L125 PetriNetUnfolderBase]: For 71945/72850 co-relation queries the response was YES. [2024-11-19 14:09:48,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110057 conditions, 36459 events. 22938/36459 cut-off events. For 71945/72850 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 259800 event pairs, 5630 based on Foata normal form. 440/36190 useless extension candidates. Maximal degree in co-relation 109900. Up to 14191 conditions per place. [2024-11-19 14:09:49,062 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 137 selfloop transitions, 14 changer transitions 3/181 dead transitions. [2024-11-19 14:09:49,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 181 transitions, 1536 flow [2024-11-19 14:09:49,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:09:49,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:09:49,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 184 transitions. [2024-11-19 14:09:49,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6237288135593221 [2024-11-19 14:09:49,063 INFO L175 Difference]: Start difference. First operand has 121 places, 111 transitions, 716 flow. Second operand 5 states and 184 transitions. [2024-11-19 14:09:49,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 181 transitions, 1536 flow [2024-11-19 14:09:49,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 181 transitions, 1508 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-19 14:09:49,743 INFO L231 Difference]: Finished difference. Result has 120 places, 110 transitions, 722 flow [2024-11-19 14:09:49,743 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=722, PETRI_PLACES=120, PETRI_TRANSITIONS=110} [2024-11-19 14:09:49,743 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 62 predicate places. [2024-11-19 14:09:49,744 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 110 transitions, 722 flow [2024-11-19 14:09:49,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:49,744 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:49,744 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] [2024-11-19 14:09:49,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 14:09:49,944 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 [2024-11-19 14:09:49,945 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 14:09:49,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:49,945 INFO L85 PathProgramCache]: Analyzing trace with hash 2063486676, now seen corresponding path program 1 times [2024-11-19 14:09:49,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:49,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196806077] [2024-11-19 14:09:49,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:49,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:50,031 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-19 14:09:50,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:50,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196806077] [2024-11-19 14:09:50,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196806077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:50,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825255019] [2024-11-19 14:09:50,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:50,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:50,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:50,035 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) [2024-11-19 14:09:50,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 14:09:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:50,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 14:09:50,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:50,278 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 14:09:50,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:50,397 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 14:09:50,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825255019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:50,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:50,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-19 14:09:50,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801506770] [2024-11-19 14:09:50,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:50,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 14:09:50,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:50,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 14:09:50,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2024-11-19 14:09:50,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-11-19 14:09:50,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 110 transitions, 722 flow. Second operand has 19 states, 19 states have (on average 22.157894736842106) internal successors, (421), 19 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:50,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:50,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-11-19 14:09:50,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:59,560 INFO L124 PetriNetUnfolderBase]: 56371/87832 cut-off events. [2024-11-19 14:09:59,561 INFO L125 PetriNetUnfolderBase]: For 252635/253776 co-relation queries the response was YES. [2024-11-19 14:09:59,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275138 conditions, 87832 events. 56371/87832 cut-off events. For 252635/253776 co-relation queries the response was YES. Maximal size of possible extension queue 1167. Compared 658387 event pairs, 4393 based on Foata normal form. 3012/90830 useless extension candidates. Maximal degree in co-relation 274983. Up to 13048 conditions per place. [2024-11-19 14:10:00,238 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 731 selfloop transitions, 62 changer transitions 24/828 dead transitions. [2024-11-19 14:10:00,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 828 transitions, 6888 flow [2024-11-19 14:10:00,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-19 14:10:00,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-19 14:10:00,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 943 transitions. [2024-11-19 14:10:00,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5708232445520581 [2024-11-19 14:10:00,240 INFO L175 Difference]: Start difference. First operand has 120 places, 110 transitions, 722 flow. Second operand 28 states and 943 transitions. [2024-11-19 14:10:00,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 828 transitions, 6888 flow [2024-11-19 14:10:00,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 828 transitions, 6427 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:10:00,551 INFO L231 Difference]: Finished difference. Result has 162 places, 155 transitions, 1274 flow [2024-11-19 14:10:00,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1274, PETRI_PLACES=162, PETRI_TRANSITIONS=155} [2024-11-19 14:10:00,551 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 104 predicate places. [2024-11-19 14:10:00,552 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 155 transitions, 1274 flow [2024-11-19 14:10:00,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 22.157894736842106) internal successors, (421), 19 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:00,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:00,552 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-19 14:10:00,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 14:10:00,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-19 14:10:00,753 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 14:10:00,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:00,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1509191122, now seen corresponding path program 1 times [2024-11-19 14:10:00,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:00,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744950513] [2024-11-19 14:10:00,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:00,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:01,155 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 14:10:01,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:01,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744950513] [2024-11-19 14:10:01,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744950513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:10:01,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216989905] [2024-11-19 14:10:01,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:01,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:10:01,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:10:01,159 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:10:01,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 14:10:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:01,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 14:10:01,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:10:01,402 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 14:10:01,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:10:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 14:10:01,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216989905] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:10:01,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:10:01,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 18 [2024-11-19 14:10:01,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97312754] [2024-11-19 14:10:01,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:10:01,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 14:10:01,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:01,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 14:10:01,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-19 14:10:01,638 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-11-19 14:10:01,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 155 transitions, 1274 flow. Second operand has 18 states, 18 states have (on average 22.22222222222222) internal successors, (400), 18 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:01,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:01,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-11-19 14:10:01,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand