./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d 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/parallel-min-max-1.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 bf26be9bd61f36f1b6136fc4e500a91a95d08528025fd00027577283116c4a35 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:53:04,318 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:53:04,385 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:53:04,398 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:53:04,399 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:53:04,425 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:53:04,426 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:53:04,426 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:53:04,426 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:53:04,427 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:53:04,427 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:53:04,429 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:53:04,429 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:53:04,430 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:53:04,432 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:53:04,432 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:53:04,433 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:53:04,433 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:53:04,433 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:53:04,433 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:53:04,433 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:53:04,440 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:53:04,440 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:53:04,440 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:53:04,441 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:53:04,441 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:53:04,441 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:53:04,441 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:53:04,441 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:53:04,441 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:53:04,442 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:53:04,442 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:53:04,442 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:53:04,442 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:53:04,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:53:04,442 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:53:04,442 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:53:04,443 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:53:04,443 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:53:04,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:53:04,443 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:53:04,443 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:53:04,444 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:53:04,444 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:53:04,444 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf26be9bd61f36f1b6136fc4e500a91a95d08528025fd00027577283116c4a35 [2024-11-17 07:53:04,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:53:04,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:53:04,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:53:04,671 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:53:04,672 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:53:04,673 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2024-11-17 07:53:05,963 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:53:06,123 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:53:06,124 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2024-11-17 07:53:06,130 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/897f58f92/fb6b14dc3bc44fba92cd862c7313fc58/FLAG5234e6e13 [2024-11-17 07:53:06,533 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/897f58f92/fb6b14dc3bc44fba92cd862c7313fc58 [2024-11-17 07:53:06,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:53:06,536 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:53:06,537 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:53:06,537 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:53:06,541 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:53:06,542 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:53:06" (1/1) ... [2024-11-17 07:53:06,543 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb5af93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:06, skipping insertion in model container [2024-11-17 07:53:06,543 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:53:06" (1/1) ... [2024-11-17 07:53:06,561 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:53:06,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:53:06,756 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:53:06,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:53:06,794 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:53:06,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:06 WrapperNode [2024-11-17 07:53:06,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:53:06,796 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:53:06,796 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:53:06,796 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:53:06,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:06" (1/1) ... [2024-11-17 07:53:06,810 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:06" (1/1) ... [2024-11-17 07:53:06,827 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 123 [2024-11-17 07:53:06,828 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:53:06,828 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:53:06,828 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:53:06,829 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:53:06,836 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:06" (1/1) ... [2024-11-17 07:53:06,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:06" (1/1) ... [2024-11-17 07:53:06,839 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:06" (1/1) ... [2024-11-17 07:53:06,851 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-17 07:53:06,855 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:06" (1/1) ... [2024-11-17 07:53:06,855 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:06" (1/1) ... [2024-11-17 07:53:06,861 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:06" (1/1) ... [2024-11-17 07:53:06,861 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:06" (1/1) ... [2024-11-17 07:53:06,863 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:06" (1/1) ... [2024-11-17 07:53:06,863 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:06" (1/1) ... [2024-11-17 07:53:06,869 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:53:06,870 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:53:06,870 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:53:06,870 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:53:06,870 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:06" (1/1) ... [2024-11-17 07:53:06,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:53:06,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:06,900 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) [2024-11-17 07:53:06,902 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 [2024-11-17 07:53:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:53:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 07:53:06,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 07:53:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 07:53:06,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 07:53:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-17 07:53:06,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-17 07:53:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:53:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:53:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:53:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:53:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 07:53:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:53:06,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:53:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:53:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:53:06,950 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:53:07,048 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:53:07,051 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:53:07,332 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:53:07,332 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:53:07,494 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:53:07,495 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:53:07,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:53:07 BoogieIcfgContainer [2024-11-17 07:53:07,496 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:53:07,500 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:53:07,500 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:53:07,503 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:53:07,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:53:06" (1/3) ... [2024-11-17 07:53:07,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34760ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:53:07, skipping insertion in model container [2024-11-17 07:53:07,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:06" (2/3) ... [2024-11-17 07:53:07,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34760ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:53:07, skipping insertion in model container [2024-11-17 07:53:07,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:53:07" (3/3) ... [2024-11-17 07:53:07,507 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2024-11-17 07:53:07,527 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:53:07,527 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-17 07:53:07,527 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:53:07,582 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-17 07:53:07,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 74 transitions, 169 flow [2024-11-17 07:53:07,638 INFO L124 PetriNetUnfolderBase]: 8/71 cut-off events. [2024-11-17 07:53:07,638 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 07:53:07,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 71 events. 8/71 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 124 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2024-11-17 07:53:07,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 74 transitions, 169 flow [2024-11-17 07:53:07,647 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 68 transitions, 148 flow [2024-11-17 07:53:07,656 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:53:07,665 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;@6b5a237c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:53:07,666 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-17 07:53:07,673 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:53:07,673 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-11-17 07:53:07,674 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:53:07,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:07,674 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:07,675 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:53:07,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:07,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2039817743, now seen corresponding path program 1 times [2024-11-17 07:53:07,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:07,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458753292] [2024-11-17 07:53:07,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:07,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:08,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:08,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:08,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458753292] [2024-11-17 07:53:08,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458753292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:53:08,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:53:08,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:53:08,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960887952] [2024-11-17 07:53:08,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:53:08,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:53:08,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:08,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:53:08,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:53:08,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 74 [2024-11-17 07:53:08,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 148 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) [2024-11-17 07:53:08,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:08,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 74 [2024-11-17 07:53:08,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:08,550 INFO L124 PetriNetUnfolderBase]: 1646/3135 cut-off events. [2024-11-17 07:53:08,551 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2024-11-17 07:53:08,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5666 conditions, 3135 events. 1646/3135 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 20646 event pairs, 1224 based on Foata normal form. 250/2963 useless extension candidates. Maximal degree in co-relation 5426. Up to 2330 conditions per place. [2024-11-17 07:53:08,579 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 44 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2024-11-17 07:53:08,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 68 transitions, 244 flow [2024-11-17 07:53:08,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:53:08,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:53:08,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-11-17 07:53:08,592 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-11-17 07:53:08,594 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 148 flow. Second operand 4 states and 146 transitions. [2024-11-17 07:53:08,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 68 transitions, 244 flow [2024-11-17 07:53:08,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 68 transitions, 238 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 07:53:08,604 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 165 flow [2024-11-17 07:53:08,608 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2024-11-17 07:53:08,612 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 1 predicate places. [2024-11-17 07:53:08,612 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 165 flow [2024-11-17 07:53:08,613 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) [2024-11-17 07:53:08,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:08,613 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:08,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:53:08,614 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:53:08,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:08,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1073262144, now seen corresponding path program 1 times [2024-11-17 07:53:08,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:08,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977064606] [2024-11-17 07:53:08,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:08,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:08,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:08,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:08,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977064606] [2024-11-17 07:53:08,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977064606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:08,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317758423] [2024-11-17 07:53:08,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:08,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:08,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:08,777 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) [2024-11-17 07:53:08,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:53:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:08,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:53:08,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:08,905 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:53:08,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317758423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:53:08,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:53:08,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-17 07:53:08,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339052919] [2024-11-17 07:53:08,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:53:08,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:53:08,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:08,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:53:08,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:53:08,924 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 74 [2024-11-17 07:53:08,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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) [2024-11-17 07:53:08,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:08,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 74 [2024-11-17 07:53:08,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:09,203 INFO L124 PetriNetUnfolderBase]: 1646/3134 cut-off events. [2024-11-17 07:53:09,204 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-17 07:53:09,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5647 conditions, 3134 events. 1646/3134 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 20630 event pairs, 1224 based on Foata normal form. 1/2713 useless extension candidates. Maximal degree in co-relation 5618. Up to 2325 conditions per place. [2024-11-17 07:53:09,222 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 40 selfloop transitions, 7 changer transitions 0/67 dead transitions. [2024-11-17 07:53:09,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 67 transitions, 255 flow [2024-11-17 07:53:09,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:53:09,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:53:09,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-11-17 07:53:09,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-11-17 07:53:09,226 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 165 flow. Second operand 6 states and 186 transitions. [2024-11-17 07:53:09,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 67 transitions, 255 flow [2024-11-17 07:53:09,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 67 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:53:09,228 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 172 flow [2024-11-17 07:53:09,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=172, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2024-11-17 07:53:09,229 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 4 predicate places. [2024-11-17 07:53:09,229 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 172 flow [2024-11-17 07:53:09,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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) [2024-11-17 07:53:09,231 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:09,231 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:09,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 07:53:09,432 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 [2024-11-17 07:53:09,432 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:53:09,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:09,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1088612245, now seen corresponding path program 1 times [2024-11-17 07:53:09,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:09,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859159347] [2024-11-17 07:53:09,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:09,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:09,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:09,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:09,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859159347] [2024-11-17 07:53:09,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859159347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:09,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211137220] [2024-11-17 07:53:09,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:09,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:09,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:09,544 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) [2024-11-17 07:53:09,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:53:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:09,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:53:09,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:09,635 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:09,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:09,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211137220] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:09,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:09,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:53:09,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185716741] [2024-11-17 07:53:09,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:09,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:53:09,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:09,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:53:09,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:53:09,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 74 [2024-11-17 07:53:09,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 172 flow. Second operand has 12 states, 12 states have (on average 25.083333333333332) internal successors, (301), 12 states have internal predecessors, (301), 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) [2024-11-17 07:53:09,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:09,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 74 [2024-11-17 07:53:09,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:10,012 INFO L124 PetriNetUnfolderBase]: 1649/3152 cut-off events. [2024-11-17 07:53:10,012 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-11-17 07:53:10,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5697 conditions, 3152 events. 1649/3152 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 20807 event pairs, 1224 based on Foata normal form. 3/2734 useless extension candidates. Maximal degree in co-relation 5619. Up to 2332 conditions per place. [2024-11-17 07:53:10,028 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 43 selfloop transitions, 13 changer transitions 0/76 dead transitions. [2024-11-17 07:53:10,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 76 transitions, 338 flow [2024-11-17 07:53:10,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:53:10,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:53:10,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 289 transitions. [2024-11-17 07:53:10,032 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39054054054054055 [2024-11-17 07:53:10,032 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 172 flow. Second operand 10 states and 289 transitions. [2024-11-17 07:53:10,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 76 transitions, 338 flow [2024-11-17 07:53:10,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 76 transitions, 308 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-17 07:53:10,035 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 240 flow [2024-11-17 07:53:10,036 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=240, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2024-11-17 07:53:10,037 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 12 predicate places. [2024-11-17 07:53:10,037 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 240 flow [2024-11-17 07:53:10,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.083333333333332) internal successors, (301), 12 states have internal predecessors, (301), 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) [2024-11-17 07:53:10,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:10,038 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, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:10,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-17 07:53:10,238 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 [2024-11-17 07:53:10,239 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:53:10,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:10,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1835452716, now seen corresponding path program 1 times [2024-11-17 07:53:10,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:10,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116224840] [2024-11-17 07:53:10,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:10,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:10,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:10,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:10,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116224840] [2024-11-17 07:53:10,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116224840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:53:10,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:53:10,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:53:10,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12639803] [2024-11-17 07:53:10,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:53:10,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:53:10,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:10,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:53:10,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:53:10,309 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 74 [2024-11-17 07:53:10,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 240 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) [2024-11-17 07:53:10,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:10,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 74 [2024-11-17 07:53:10,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:10,722 INFO L124 PetriNetUnfolderBase]: 3130/5213 cut-off events. [2024-11-17 07:53:10,722 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-11-17 07:53:10,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10014 conditions, 5213 events. 3130/5213 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 31721 event pairs, 1701 based on Foata normal form. 74/4751 useless extension candidates. Maximal degree in co-relation 9976. Up to 3128 conditions per place. [2024-11-17 07:53:10,749 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 94 selfloop transitions, 4 changer transitions 0/115 dead transitions. [2024-11-17 07:53:10,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 115 transitions, 522 flow [2024-11-17 07:53:10,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:53:10,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:53:10,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 172 transitions. [2024-11-17 07:53:10,751 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2024-11-17 07:53:10,751 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 240 flow. Second operand 4 states and 172 transitions. [2024-11-17 07:53:10,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 115 transitions, 522 flow [2024-11-17 07:53:10,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 115 transitions, 511 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-17 07:53:10,754 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 258 flow [2024-11-17 07:53:10,754 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=80, 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=258, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2024-11-17 07:53:10,788 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 15 predicate places. [2024-11-17 07:53:10,789 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 258 flow [2024-11-17 07:53:10,792 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) [2024-11-17 07:53:10,792 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:10,793 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:10,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:53:10,793 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:53:10,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:10,793 INFO L85 PathProgramCache]: Analyzing trace with hash 664254452, now seen corresponding path program 1 times [2024-11-17 07:53:10,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:10,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194029137] [2024-11-17 07:53:10,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:10,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:10,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:10,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:10,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194029137] [2024-11-17 07:53:10,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194029137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:53:10,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:53:10,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:53:10,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287281144] [2024-11-17 07:53:10,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:53:10,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:53:10,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:10,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:53:10,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:53:10,870 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 74 [2024-11-17 07:53:10,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2024-11-17 07:53:10,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:10,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 74 [2024-11-17 07:53:10,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:11,400 INFO L124 PetriNetUnfolderBase]: 4294/7044 cut-off events. [2024-11-17 07:53:11,402 INFO L125 PetriNetUnfolderBase]: For 715/994 co-relation queries the response was YES. [2024-11-17 07:53:11,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14666 conditions, 7044 events. 4294/7044 cut-off events. For 715/994 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 43468 event pairs, 2336 based on Foata normal form. 282/6653 useless extension candidates. Maximal degree in co-relation 14626. Up to 4266 conditions per place. [2024-11-17 07:53:11,436 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 98 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2024-11-17 07:53:11,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 120 transitions, 570 flow [2024-11-17 07:53:11,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:53:11,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:53:11,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2024-11-17 07:53:11,438 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5743243243243243 [2024-11-17 07:53:11,438 INFO L175 Difference]: Start difference. First operand has 85 places, 79 transitions, 258 flow. Second operand 4 states and 170 transitions. [2024-11-17 07:53:11,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 120 transitions, 570 flow [2024-11-17 07:53:11,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 120 transitions, 563 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:53:11,441 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 284 flow [2024-11-17 07:53:11,441 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=84, 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=284, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2024-11-17 07:53:11,441 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 19 predicate places. [2024-11-17 07:53:11,442 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 284 flow [2024-11-17 07:53:11,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2024-11-17 07:53:11,442 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:11,442 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:11,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:53:11,442 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:53:11,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:11,443 INFO L85 PathProgramCache]: Analyzing trace with hash -2068387358, now seen corresponding path program 2 times [2024-11-17 07:53:11,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:11,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61177342] [2024-11-17 07:53:11,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:11,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:11,592 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:11,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:11,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61177342] [2024-11-17 07:53:11,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61177342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:11,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315870478] [2024-11-17 07:53:11,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:53:11,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:11,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:11,596 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) [2024-11-17 07:53:11,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 07:53:11,659 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:53:11,659 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:53:11,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 07:53:11,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:11,770 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:53:11,771 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:11,833 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:53:11,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315870478] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:11,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:11,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2024-11-17 07:53:11,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142242047] [2024-11-17 07:53:11,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:11,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-17 07:53:11,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:11,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-17 07:53:11,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-17 07:53:11,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 74 [2024-11-17 07:53:11,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 284 flow. Second operand has 16 states, 16 states have (on average 24.25) internal successors, (388), 16 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:11,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:11,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 74 [2024-11-17 07:53:11,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:12,550 INFO L124 PetriNetUnfolderBase]: 3130/5673 cut-off events. [2024-11-17 07:53:12,551 INFO L125 PetriNetUnfolderBase]: For 1056/1271 co-relation queries the response was YES. [2024-11-17 07:53:12,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12150 conditions, 5673 events. 3130/5673 cut-off events. For 1056/1271 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 37920 event pairs, 2336 based on Foata normal form. 153/5259 useless extension candidates. Maximal degree in co-relation 12096. Up to 4352 conditions per place. [2024-11-17 07:53:12,577 INFO L140 encePairwiseOnDemand]: 66/74 looper letters, 46 selfloop transitions, 22 changer transitions 0/89 dead transitions. [2024-11-17 07:53:12,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 89 transitions, 439 flow [2024-11-17 07:53:12,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-17 07:53:12,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-17 07:53:12,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 418 transitions. [2024-11-17 07:53:12,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3530405405405405 [2024-11-17 07:53:12,579 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 284 flow. Second operand 16 states and 418 transitions. [2024-11-17 07:53:12,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 89 transitions, 439 flow [2024-11-17 07:53:12,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 89 transitions, 424 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-17 07:53:12,583 INFO L231 Difference]: Finished difference. Result has 98 places, 84 transitions, 322 flow [2024-11-17 07:53:12,583 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=322, PETRI_PLACES=98, PETRI_TRANSITIONS=84} [2024-11-17 07:53:12,583 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 28 predicate places. [2024-11-17 07:53:12,584 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 84 transitions, 322 flow [2024-11-17 07:53:12,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 24.25) internal successors, (388), 16 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:12,584 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:12,584 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:12,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 07:53:12,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:12,785 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:53:12,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:12,785 INFO L85 PathProgramCache]: Analyzing trace with hash -884762740, now seen corresponding path program 1 times [2024-11-17 07:53:12,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:12,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003694916] [2024-11-17 07:53:12,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:12,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:12,839 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 07:53:12,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:12,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003694916] [2024-11-17 07:53:12,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003694916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:53:12,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:53:12,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:53:12,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339550823] [2024-11-17 07:53:12,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:53:12,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:53:12,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:12,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:53:12,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:53:12,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 74 [2024-11-17 07:53:12,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 84 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2024-11-17 07:53:12,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:12,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 74 [2024-11-17 07:53:12,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:13,286 INFO L124 PetriNetUnfolderBase]: 3129/5671 cut-off events. [2024-11-17 07:53:13,287 INFO L125 PetriNetUnfolderBase]: For 1040/1255 co-relation queries the response was YES. [2024-11-17 07:53:13,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11958 conditions, 5671 events. 3129/5671 cut-off events. For 1040/1255 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 37835 event pairs, 2336 based on Foata normal form. 152/5256 useless extension candidates. Maximal degree in co-relation 11818. Up to 4363 conditions per place. [2024-11-17 07:53:13,307 INFO L140 encePairwiseOnDemand]: 70/74 looper letters, 59 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2024-11-17 07:53:13,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 83 transitions, 440 flow [2024-11-17 07:53:13,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:53:13,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:53:13,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2024-11-17 07:53:13,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-11-17 07:53:13,308 INFO L175 Difference]: Start difference. First operand has 98 places, 84 transitions, 322 flow. Second operand 4 states and 143 transitions. [2024-11-17 07:53:13,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 83 transitions, 440 flow [2024-11-17 07:53:13,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 83 transitions, 366 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-11-17 07:53:13,312 INFO L231 Difference]: Finished difference. Result has 88 places, 83 transitions, 252 flow [2024-11-17 07:53:13,312 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=252, PETRI_PLACES=88, PETRI_TRANSITIONS=83} [2024-11-17 07:53:13,313 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 18 predicate places. [2024-11-17 07:53:13,315 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 83 transitions, 252 flow [2024-11-17 07:53:13,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2024-11-17 07:53:13,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:13,316 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:13,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:53:13,316 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:53:13,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:13,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1625957371, now seen corresponding path program 1 times [2024-11-17 07:53:13,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:13,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575759177] [2024-11-17 07:53:13,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:13,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:53:13,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:13,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575759177] [2024-11-17 07:53:13,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575759177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:13,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068359111] [2024-11-17 07:53:13,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:13,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:13,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:13,391 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) [2024-11-17 07:53:13,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 07:53:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:13,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 07:53:13,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:13,620 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:13,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:13,749 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:13,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068359111] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:13,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:13,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-17 07:53:13,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970919639] [2024-11-17 07:53:13,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:13,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-17 07:53:13,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:13,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-17 07:53:13,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-17 07:53:13,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 74 [2024-11-17 07:53:13,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 83 transitions, 252 flow. Second operand has 19 states, 19 states have (on average 20.05263157894737) internal successors, (381), 19 states have internal predecessors, (381), 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) [2024-11-17 07:53:13,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:13,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 74 [2024-11-17 07:53:13,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:15,434 INFO L124 PetriNetUnfolderBase]: 7436/11967 cut-off events. [2024-11-17 07:53:15,435 INFO L125 PetriNetUnfolderBase]: For 1812/2375 co-relation queries the response was YES. [2024-11-17 07:53:15,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26046 conditions, 11967 events. 7436/11967 cut-off events. For 1812/2375 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 78238 event pairs, 1900 based on Foata normal form. 397/11076 useless extension candidates. Maximal degree in co-relation 25999. Up to 1752 conditions per place. [2024-11-17 07:53:15,489 INFO L140 encePairwiseOnDemand]: 60/74 looper letters, 226 selfloop transitions, 30 changer transitions 12/283 dead transitions. [2024-11-17 07:53:15,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 283 transitions, 1320 flow [2024-11-17 07:53:15,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-17 07:53:15,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-17 07:53:15,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 528 transitions. [2024-11-17 07:53:15,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41971383147853736 [2024-11-17 07:53:15,491 INFO L175 Difference]: Start difference. First operand has 88 places, 83 transitions, 252 flow. Second operand 17 states and 528 transitions. [2024-11-17 07:53:15,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 283 transitions, 1320 flow [2024-11-17 07:53:15,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 283 transitions, 1314 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:53:15,503 INFO L231 Difference]: Finished difference. Result has 102 places, 90 transitions, 341 flow [2024-11-17 07:53:15,503 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=341, PETRI_PLACES=102, PETRI_TRANSITIONS=90} [2024-11-17 07:53:15,504 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 32 predicate places. [2024-11-17 07:53:15,504 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 90 transitions, 341 flow [2024-11-17 07:53:15,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 20.05263157894737) internal successors, (381), 19 states have internal predecessors, (381), 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) [2024-11-17 07:53:15,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:15,505 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:15,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 07:53:15,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:15,709 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:53:15,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:15,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1336459205, now seen corresponding path program 1 times [2024-11-17 07:53:15,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:15,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595231618] [2024-11-17 07:53:15,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:15,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:15,798 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:53:15,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:15,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595231618] [2024-11-17 07:53:15,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595231618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:15,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782245122] [2024-11-17 07:53:15,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:15,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:15,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:15,801 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) [2024-11-17 07:53:15,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 07:53:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:15,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 07:53:15,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:15,972 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:15,973 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:16,100 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:16,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782245122] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:16,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:16,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-17 07:53:16,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007554268] [2024-11-17 07:53:16,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:16,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-17 07:53:16,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:16,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-17 07:53:16,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-17 07:53:16,205 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 74 [2024-11-17 07:53:16,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 90 transitions, 341 flow. Second operand has 19 states, 19 states have (on average 20.263157894736842) internal successors, (385), 19 states have internal predecessors, (385), 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) [2024-11-17 07:53:16,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:16,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 74 [2024-11-17 07:53:16,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:17,538 INFO L124 PetriNetUnfolderBase]: 7185/11603 cut-off events. [2024-11-17 07:53:17,539 INFO L125 PetriNetUnfolderBase]: For 4548/4684 co-relation queries the response was YES. [2024-11-17 07:53:17,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27083 conditions, 11603 events. 7185/11603 cut-off events. For 4548/4684 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 76152 event pairs, 1825 based on Foata normal form. 110/10553 useless extension candidates. Maximal degree in co-relation 18289. Up to 1753 conditions per place. [2024-11-17 07:53:17,591 INFO L140 encePairwiseOnDemand]: 60/74 looper letters, 158 selfloop transitions, 23 changer transitions 83/279 dead transitions. [2024-11-17 07:53:17,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 279 transitions, 1464 flow [2024-11-17 07:53:17,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-17 07:53:17,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-17 07:53:17,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 519 transitions. [2024-11-17 07:53:17,593 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41255961844197137 [2024-11-17 07:53:17,593 INFO L175 Difference]: Start difference. First operand has 102 places, 90 transitions, 341 flow. Second operand 17 states and 519 transitions. [2024-11-17 07:53:17,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 279 transitions, 1464 flow [2024-11-17 07:53:17,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 279 transitions, 1377 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-11-17 07:53:17,608 INFO L231 Difference]: Finished difference. Result has 112 places, 82 transitions, 315 flow [2024-11-17 07:53:17,608 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=315, PETRI_PLACES=112, PETRI_TRANSITIONS=82} [2024-11-17 07:53:17,610 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 42 predicate places. [2024-11-17 07:53:17,610 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 82 transitions, 315 flow [2024-11-17 07:53:17,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 20.263157894736842) internal successors, (385), 19 states have internal predecessors, (385), 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) [2024-11-17 07:53:17,610 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:17,610 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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, 1, 1, 1, 1] [2024-11-17 07:53:17,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 07:53:17,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:17,811 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:53:17,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:17,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1649753599, now seen corresponding path program 1 times [2024-11-17 07:53:17,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:17,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509405231] [2024-11-17 07:53:17,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:17,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:17,953 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:53:17,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:17,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509405231] [2024-11-17 07:53:17,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509405231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:17,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732772028] [2024-11-17 07:53:17,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:17,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:17,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:17,957 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) [2024-11-17 07:53:17,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 07:53:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:18,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:53:18,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:18,053 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:53:18,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:53:18,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732772028] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:18,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:18,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:53:18,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563603170] [2024-11-17 07:53:18,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:18,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:53:18,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:18,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:53:18,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:53:18,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 74 [2024-11-17 07:53:18,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 82 transitions, 315 flow. Second operand has 12 states, 12 states have (on average 24.583333333333332) internal successors, (295), 12 states have internal predecessors, (295), 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) [2024-11-17 07:53:18,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:18,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 74 [2024-11-17 07:53:18,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:19,297 INFO L124 PetriNetUnfolderBase]: 8643/14131 cut-off events. [2024-11-17 07:53:19,297 INFO L125 PetriNetUnfolderBase]: For 6519/6671 co-relation queries the response was YES. [2024-11-17 07:53:19,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33662 conditions, 14131 events. 8643/14131 cut-off events. For 6519/6671 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 91223 event pairs, 2599 based on Foata normal form. 318/13248 useless extension candidates. Maximal degree in co-relation 33534. Up to 4815 conditions per place. [2024-11-17 07:53:19,355 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 220 selfloop transitions, 13 changer transitions 0/251 dead transitions. [2024-11-17 07:53:19,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 251 transitions, 1327 flow [2024-11-17 07:53:19,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:53:19,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:53:19,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 415 transitions. [2024-11-17 07:53:19,356 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5608108108108109 [2024-11-17 07:53:19,356 INFO L175 Difference]: Start difference. First operand has 112 places, 82 transitions, 315 flow. Second operand 10 states and 415 transitions. [2024-11-17 07:53:19,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 251 transitions, 1327 flow [2024-11-17 07:53:19,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 251 transitions, 1151 flow, removed 24 selfloop flow, removed 16 redundant places. [2024-11-17 07:53:19,369 INFO L231 Difference]: Finished difference. Result has 100 places, 91 transitions, 321 flow [2024-11-17 07:53:19,369 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=321, PETRI_PLACES=100, PETRI_TRANSITIONS=91} [2024-11-17 07:53:19,370 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 30 predicate places. [2024-11-17 07:53:19,370 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 91 transitions, 321 flow [2024-11-17 07:53:19,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.583333333333332) internal successors, (295), 12 states have internal predecessors, (295), 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) [2024-11-17 07:53:19,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:19,371 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:19,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 07:53:19,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:19,572 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:53:19,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:19,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1834430865, now seen corresponding path program 1 times [2024-11-17 07:53:19,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:19,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476422639] [2024-11-17 07:53:19,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:19,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:19,637 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:53:19,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:19,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476422639] [2024-11-17 07:53:19,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476422639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:19,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326641583] [2024-11-17 07:53:19,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:19,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:19,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:19,640 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) [2024-11-17 07:53:19,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 07:53:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:19,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:53:19,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:19,727 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:53:19,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:19,756 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:53:19,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326641583] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:19,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:19,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:53:19,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657745330] [2024-11-17 07:53:19,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:19,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:53:19,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:19,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:53:19,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:53:19,778 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 74 [2024-11-17 07:53:19,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 91 transitions, 321 flow. Second operand has 12 states, 12 states have (on average 24.75) internal successors, (297), 12 states have internal predecessors, (297), 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) [2024-11-17 07:53:19,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:19,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 74 [2024-11-17 07:53:19,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:21,723 INFO L124 PetriNetUnfolderBase]: 16861/26776 cut-off events. [2024-11-17 07:53:21,723 INFO L125 PetriNetUnfolderBase]: For 13327/13799 co-relation queries the response was YES. [2024-11-17 07:53:21,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61208 conditions, 26776 events. 16861/26776 cut-off events. For 13327/13799 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 174493 event pairs, 4307 based on Foata normal form. 585/24940 useless extension candidates. Maximal degree in co-relation 61103. Up to 8600 conditions per place. [2024-11-17 07:53:21,857 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 266 selfloop transitions, 13 changer transitions 0/300 dead transitions. [2024-11-17 07:53:21,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 300 transitions, 1675 flow [2024-11-17 07:53:21,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:53:21,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:53:21,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 407 transitions. [2024-11-17 07:53:21,858 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-17 07:53:21,858 INFO L175 Difference]: Start difference. First operand has 100 places, 91 transitions, 321 flow. Second operand 10 states and 407 transitions. [2024-11-17 07:53:21,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 300 transitions, 1675 flow [2024-11-17 07:53:21,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 300 transitions, 1600 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-11-17 07:53:21,876 INFO L231 Difference]: Finished difference. Result has 110 places, 100 transitions, 390 flow [2024-11-17 07:53:21,876 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=390, PETRI_PLACES=110, PETRI_TRANSITIONS=100} [2024-11-17 07:53:21,876 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 40 predicate places. [2024-11-17 07:53:21,876 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 100 transitions, 390 flow [2024-11-17 07:53:21,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.75) internal successors, (297), 12 states have internal predecessors, (297), 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) [2024-11-17 07:53:21,877 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:21,877 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:21,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-17 07:53:22,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:22,077 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:53:22,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:22,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1782429609, now seen corresponding path program 2 times [2024-11-17 07:53:22,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:22,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905374676] [2024-11-17 07:53:22,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:22,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:22,369 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-17 07:53:22,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:22,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905374676] [2024-11-17 07:53:22,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905374676] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:22,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912241566] [2024-11-17 07:53:22,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:53:22,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:22,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:22,372 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) [2024-11-17 07:53:22,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 07:53:22,430 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:53:22,431 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:53:22,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:53:22,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:22,529 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-17 07:53:22,529 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:22,609 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-17 07:53:22,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912241566] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:22,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:22,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2024-11-17 07:53:22,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540958798] [2024-11-17 07:53:22,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:22,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 07:53:22,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:22,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 07:53:22,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-17 07:53:22,679 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 74 [2024-11-17 07:53:22,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 100 transitions, 390 flow. Second operand has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:22,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:22,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 74 [2024-11-17 07:53:22,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:26,964 INFO L124 PetriNetUnfolderBase]: 37049/56579 cut-off events. [2024-11-17 07:53:26,964 INFO L125 PetriNetUnfolderBase]: For 39248/40256 co-relation queries the response was YES. [2024-11-17 07:53:27,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136813 conditions, 56579 events. 37049/56579 cut-off events. For 39248/40256 co-relation queries the response was YES. Maximal size of possible extension queue 863. Compared 394375 event pairs, 6280 based on Foata normal form. 388/52087 useless extension candidates. Maximal degree in co-relation 109003. Up to 12656 conditions per place. [2024-11-17 07:53:27,336 INFO L140 encePairwiseOnDemand]: 58/74 looper letters, 219 selfloop transitions, 43 changer transitions 45/325 dead transitions. [2024-11-17 07:53:27,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 325 transitions, 1880 flow [2024-11-17 07:53:27,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-17 07:53:27,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-17 07:53:27,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 535 transitions. [2024-11-17 07:53:27,339 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38051209103840683 [2024-11-17 07:53:27,339 INFO L175 Difference]: Start difference. First operand has 110 places, 100 transitions, 390 flow. Second operand 19 states and 535 transitions. [2024-11-17 07:53:27,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 325 transitions, 1880 flow [2024-11-17 07:53:27,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 325 transitions, 1785 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-11-17 07:53:27,536 INFO L231 Difference]: Finished difference. Result has 125 places, 113 transitions, 556 flow [2024-11-17 07:53:27,536 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=556, PETRI_PLACES=125, PETRI_TRANSITIONS=113} [2024-11-17 07:53:27,537 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 55 predicate places. [2024-11-17 07:53:27,537 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 113 transitions, 556 flow [2024-11-17 07:53:27,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:27,537 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:27,537 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:27,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-17 07:53:27,738 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,SelfDestructingSolverStorable11 [2024-11-17 07:53:27,738 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:53:27,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:27,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1719832759, now seen corresponding path program 2 times [2024-11-17 07:53:27,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:27,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423542957] [2024-11-17 07:53:27,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:27,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:27,925 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-17 07:53:27,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:27,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423542957] [2024-11-17 07:53:27,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423542957] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:27,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488452080] [2024-11-17 07:53:27,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:53:27,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:27,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:27,929 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) [2024-11-17 07:53:27,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 07:53:28,000 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:53:28,000 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:53:28,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:53:28,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:28,098 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-17 07:53:28,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:28,169 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-17 07:53:28,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488452080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:28,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:28,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2024-11-17 07:53:28,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802239440] [2024-11-17 07:53:28,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:28,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 07:53:28,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:28,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 07:53:28,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-17 07:53:28,346 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 74 [2024-11-17 07:53:28,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 113 transitions, 556 flow. Second operand has 14 states, 14 states have (on average 21.428571428571427) internal successors, (300), 14 states have internal predecessors, (300), 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) [2024-11-17 07:53:28,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:28,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 74 [2024-11-17 07:53:28,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:32,691 INFO L124 PetriNetUnfolderBase]: 35595/55078 cut-off events. [2024-11-17 07:53:32,692 INFO L125 PetriNetUnfolderBase]: For 55902/56563 co-relation queries the response was YES. [2024-11-17 07:53:32,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139941 conditions, 55078 events. 35595/55078 cut-off events. For 55902/56563 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 391132 event pairs, 5585 based on Foata normal form. 670/50963 useless extension candidates. Maximal degree in co-relation 108519. Up to 13226 conditions per place. [2024-11-17 07:53:32,877 INFO L140 encePairwiseOnDemand]: 59/74 looper letters, 0 selfloop transitions, 0 changer transitions 334/334 dead transitions. [2024-11-17 07:53:32,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 334 transitions, 2181 flow [2024-11-17 07:53:32,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-17 07:53:32,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-17 07:53:32,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 524 transitions. [2024-11-17 07:53:32,880 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37268847795163584 [2024-11-17 07:53:32,880 INFO L175 Difference]: Start difference. First operand has 125 places, 113 transitions, 556 flow. Second operand 19 states and 524 transitions. [2024-11-17 07:53:32,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 334 transitions, 2181 flow [2024-11-17 07:53:33,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 334 transitions, 2144 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-11-17 07:53:33,047 INFO L231 Difference]: Finished difference. Result has 130 places, 0 transitions, 0 flow [2024-11-17 07:53:33,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=0, PETRI_PLACES=130, PETRI_TRANSITIONS=0} [2024-11-17 07:53:33,048 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 60 predicate places. [2024-11-17 07:53:33,048 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 0 transitions, 0 flow [2024-11-17 07:53:33,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.428571428571427) internal successors, (300), 14 states have internal predecessors, (300), 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) [2024-11-17 07:53:33,050 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2024-11-17 07:53:33,050 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-17 07:53:33,050 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-17 07:53:33,050 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-17 07:53:33,050 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-17 07:53:33,050 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-17 07:53:33,051 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2024-11-17 07:53:33,051 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2024-11-17 07:53:33,051 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2024-11-17 07:53:33,051 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-17 07:53:33,051 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-17 07:53:33,051 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-17 07:53:33,051 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-17 07:53:33,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-17 07:53:33,251 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,SelfDestructingSolverStorable12 [2024-11-17 07:53:33,251 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:33,256 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-17 07:53:33,256 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-17 07:53:33,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 07:53:33 BasicIcfg [2024-11-17 07:53:33,259 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-17 07:53:33,259 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-17 07:53:33,260 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-17 07:53:33,260 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-17 07:53:33,260 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:53:07" (3/4) ... [2024-11-17 07:53:33,261 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-17 07:53:33,263 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-17 07:53:33,263 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-17 07:53:33,263 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-17 07:53:33,266 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-11-17 07:53:33,266 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-17 07:53:33,266 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-17 07:53:33,266 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-17 07:53:33,324 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-17 07:53:33,324 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-17 07:53:33,324 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-17 07:53:33,325 INFO L158 Benchmark]: Toolchain (without parser) took 26788.66ms. Allocated memory was 138.4MB in the beginning and 9.7GB in the end (delta: 9.6GB). Free memory was 68.8MB in the beginning and 8.3GB in the end (delta: -8.2GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-11-17 07:53:33,325 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 138.4MB. Free memory is still 101.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 07:53:33,325 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.87ms. Allocated memory was 138.4MB in the beginning and 180.4MB in the end (delta: 41.9MB). Free memory was 68.6MB in the beginning and 149.9MB in the end (delta: -81.3MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2024-11-17 07:53:33,326 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.19ms. Allocated memory is still 180.4MB. Free memory was 149.9MB in the beginning and 147.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 07:53:33,326 INFO L158 Benchmark]: Boogie Preprocessor took 40.62ms. Allocated memory is still 180.4MB. Free memory was 147.8MB in the beginning and 145.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 07:53:33,326 INFO L158 Benchmark]: IcfgBuilder took 626.72ms. Allocated memory is still 180.4MB. Free memory was 144.8MB in the beginning and 107.1MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-11-17 07:53:33,327 INFO L158 Benchmark]: TraceAbstraction took 25759.53ms. Allocated memory was 180.4MB in the beginning and 9.7GB in the end (delta: 9.5GB). Free memory was 105.9MB in the beginning and 8.3GB in the end (delta: -8.2GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2024-11-17 07:53:33,327 INFO L158 Benchmark]: Witness Printer took 64.96ms. Allocated memory is still 9.7GB. Free memory was 8.3GB in the beginning and 8.3GB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-17 07:53:33,328 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 138.4MB. Free memory is still 101.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 257.87ms. Allocated memory was 138.4MB in the beginning and 180.4MB in the end (delta: 41.9MB). Free memory was 68.6MB in the beginning and 149.9MB in the end (delta: -81.3MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.19ms. Allocated memory is still 180.4MB. Free memory was 149.9MB in the beginning and 147.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.62ms. Allocated memory is still 180.4MB. Free memory was 147.8MB in the beginning and 145.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 626.72ms. Allocated memory is still 180.4MB. Free memory was 144.8MB in the beginning and 107.1MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 25759.53ms. Allocated memory was 180.4MB in the beginning and 9.7GB in the end (delta: 9.5GB). Free memory was 105.9MB in the beginning and 8.3GB in the end (delta: -8.2GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. * Witness Printer took 64.96ms. Allocated memory is still 9.7GB. Free memory was 8.3GB in the beginning and 8.3GB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 111]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 111]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 106 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 25.6s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 20.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2127 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2040 mSDsluCounter, 1138 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1072 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7958 IncrementalHoareTripleChecker+Invalid, 8027 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 66 mSDtfsCounter, 7958 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 828 GetRequests, 624 SyntacticMatches, 11 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=556occurred in iteration=12, InterpolantAutomatonStates: 140, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 821 NumberOfCodeBlocks, 741 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1129 ConstructedInterpolants, 0 QuantifiedInterpolants, 2691 SizeOfPredicates, 36 NumberOfNonLiveVariables, 1206 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 30 InterpolantComputations, 5 PerfectInterpolantSequences, 440/677 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-17 07:53:33,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE