./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-min-max-inc.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 341ac5a9697f243416924cef7ae19a5e9bc693a5982154ab196fb2faacf237d5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:07:05,825 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:07:05,886 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:07:05,892 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:07:05,894 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:07:05,923 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:07:05,924 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:07:05,924 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:07:05,925 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:07:05,929 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:07:05,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:07:05,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:07:05,930 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:07:05,931 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:07:05,932 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:07:05,932 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:07:05,932 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:07:05,932 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:07:05,933 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:07:05,933 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:07:05,933 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:07:05,934 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:07:05,934 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:07:05,934 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:07:05,935 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:07:05,935 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:07:05,935 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:07:05,935 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:07:05,936 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:07:05,936 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:07:05,936 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:07:05,937 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:07:05,937 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:07:05,937 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:07:05,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:07:05,938 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:07:05,938 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:07:05,938 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:07:05,939 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:07:05,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:07:05,939 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:07:05,940 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:07:05,940 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:07:05,940 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:07:05,941 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 341ac5a9697f243416924cef7ae19a5e9bc693a5982154ab196fb2faacf237d5 [2024-11-19 14:07:06,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:07:06,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:07:06,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:07:06,198 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:07:06,198 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:07:06,200 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2024-11-19 14:07:07,565 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:07:07,756 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:07:07,756 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2024-11-19 14:07:07,763 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd1bcc9c6/75f3da12573a410281cc84f3552bb3cc/FLAG01aa4d0e4 [2024-11-19 14:07:08,141 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd1bcc9c6/75f3da12573a410281cc84f3552bb3cc [2024-11-19 14:07:08,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:07:08,145 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:07:08,147 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:07:08,147 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:07:08,152 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:07:08,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:07:08" (1/1) ... [2024-11-19 14:07:08,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a0634f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:08, skipping insertion in model container [2024-11-19 14:07:08,154 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:07:08" (1/1) ... [2024-11-19 14:07:08,176 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:07:08,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:07:08,458 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:07:08,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:07:08,505 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:07:08,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:08 WrapperNode [2024-11-19 14:07:08,506 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:07:08,507 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:07:08,507 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:07:08,507 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:07:08,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:08" (1/1) ... [2024-11-19 14:07:08,521 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:08" (1/1) ... [2024-11-19 14:07:08,550 INFO L138 Inliner]: procedures = 23, calls = 26, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 126 [2024-11-19 14:07:08,551 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:07:08,551 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:07:08,551 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:07:08,551 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:07:08,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:08" (1/1) ... [2024-11-19 14:07:08,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:08" (1/1) ... [2024-11-19 14:07:08,565 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:08" (1/1) ... [2024-11-19 14:07:08,585 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 2 writes are split as follows [0, 2]. [2024-11-19 14:07:08,585 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:08" (1/1) ... [2024-11-19 14:07:08,585 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:08" (1/1) ... [2024-11-19 14:07:08,592 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:08" (1/1) ... [2024-11-19 14:07:08,597 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:08" (1/1) ... [2024-11-19 14:07:08,598 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:08" (1/1) ... [2024-11-19 14:07:08,602 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:08" (1/1) ... [2024-11-19 14:07:08,608 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:07:08,609 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:07:08,609 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:07:08,609 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:07:08,610 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:08" (1/1) ... [2024-11-19 14:07:08,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:07:08,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:08,642 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 14:07:08,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 14:07:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:07:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:07:08,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:07:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:07:08,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:07:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 14:07:08,691 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 14:07:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-19 14:07:08,691 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-19 14:07:08,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:07:08,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:07:08,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:07:08,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:07:08,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:07:08,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:07:08,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:07:08,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:07:08,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:07:08,696 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:07:08,836 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:07:08,839 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:07:09,181 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:07:09,181 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:07:09,364 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:07:09,364 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 14:07:09,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:07:09 BoogieIcfgContainer [2024-11-19 14:07:09,365 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:07:09,368 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:07:09,368 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:07:09,372 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:07:09,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:07:08" (1/3) ... [2024-11-19 14:07:09,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7846d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:07:09, skipping insertion in model container [2024-11-19 14:07:09,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:08" (2/3) ... [2024-11-19 14:07:09,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7846d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:07:09, skipping insertion in model container [2024-11-19 14:07:09,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:07:09" (3/3) ... [2024-11-19 14:07:09,375 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc.wvr.c [2024-11-19 14:07:09,389 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:07:09,389 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-19 14:07:09,389 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:07:09,481 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-19 14:07:09,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 84 transitions, 196 flow [2024-11-19 14:07:09,597 INFO L124 PetriNetUnfolderBase]: 7/80 cut-off events. [2024-11-19 14:07:09,598 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 14:07:09,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 80 events. 7/80 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 230 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2024-11-19 14:07:09,603 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 84 transitions, 196 flow [2024-11-19 14:07:09,606 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 78 transitions, 177 flow [2024-11-19 14:07:09,617 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:07:09,623 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;@31d35d90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:07:09,625 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-19 14:07:09,629 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:07:09,629 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-11-19 14:07:09,629 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:07:09,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:09,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 14:07:09,630 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-19 14:07:09,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:09,635 INFO L85 PathProgramCache]: Analyzing trace with hash 508805331, now seen corresponding path program 1 times [2024-11-19 14:07:09,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:09,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558554745] [2024-11-19 14:07:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:09,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:09,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:09,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:09,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558554745] [2024-11-19 14:07:09,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558554745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:09,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:09,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:07:09,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599538872] [2024-11-19 14:07:09,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:09,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:09,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:09,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:09,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:09,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-19 14:07:09,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:09,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:09,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-19 14:07:09,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:12,946 INFO L124 PetriNetUnfolderBase]: 17677/29142 cut-off events. [2024-11-19 14:07:12,947 INFO L125 PetriNetUnfolderBase]: For 1185/1185 co-relation queries the response was YES. [2024-11-19 14:07:13,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51996 conditions, 29142 events. 17677/29142 cut-off events. For 1185/1185 co-relation queries the response was YES. Maximal size of possible extension queue 1451. Compared 246080 event pairs, 12761 based on Foata normal form. 1/25265 useless extension candidates. Maximal degree in co-relation 49383. Up to 21575 conditions per place. [2024-11-19 14:07:13,250 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 41 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2024-11-19 14:07:13,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 81 transitions, 273 flow [2024-11-19 14:07:13,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:07:13,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:07:13,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2024-11-19 14:07:13,263 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6160714285714286 [2024-11-19 14:07:13,265 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 177 flow. Second operand 4 states and 207 transitions. [2024-11-19 14:07:13,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 81 transitions, 273 flow [2024-11-19 14:07:13,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 81 transitions, 260 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-19 14:07:13,286 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 193 flow [2024-11-19 14:07:13,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2024-11-19 14:07:13,291 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -2 predicate places. [2024-11-19 14:07:13,292 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 193 flow [2024-11-19 14:07:13,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:13,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:13,293 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:13,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:07:13,293 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-19 14:07:13,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:13,294 INFO L85 PathProgramCache]: Analyzing trace with hash 880540487, now seen corresponding path program 1 times [2024-11-19 14:07:13,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:13,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408237354] [2024-11-19 14:07:13,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:13,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:13,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:13,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:13,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408237354] [2024-11-19 14:07:13,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408237354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:13,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758504228] [2024-11-19 14:07:13,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:13,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:13,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:13,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:13,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:07:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:13,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:07:13,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:13,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:13,701 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:07:13,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758504228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:13,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:07:13,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 14:07:13,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211292222] [2024-11-19 14:07:13,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:13,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:07:13,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:13,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:07:13,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:07:13,715 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-19 14:07:13,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:13,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:13,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-19 14:07:13,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:16,086 INFO L124 PetriNetUnfolderBase]: 17677/29141 cut-off events. [2024-11-19 14:07:16,087 INFO L125 PetriNetUnfolderBase]: For 229/229 co-relation queries the response was YES. [2024-11-19 14:07:16,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51671 conditions, 29141 events. 17677/29141 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 1451. Compared 246035 event pairs, 12761 based on Foata normal form. 1/25265 useless extension candidates. Maximal degree in co-relation 51644. Up to 21570 conditions per place. [2024-11-19 14:07:16,320 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 37 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2024-11-19 14:07:16,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 80 transitions, 277 flow [2024-11-19 14:07:16,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:07:16,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:07:16,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 285 transitions. [2024-11-19 14:07:16,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5654761904761905 [2024-11-19 14:07:16,328 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 193 flow. Second operand 6 states and 285 transitions. [2024-11-19 14:07:16,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 80 transitions, 277 flow [2024-11-19 14:07:16,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:07:16,330 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 200 flow [2024-11-19 14:07:16,331 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2024-11-19 14:07:16,332 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 1 predicate places. [2024-11-19 14:07:16,332 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 200 flow [2024-11-19 14:07:16,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:16,332 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:16,333 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-19 14:07:16,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:07:16,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:16,536 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-19 14:07:16,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:16,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1526951836, now seen corresponding path program 1 times [2024-11-19 14:07:16,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:16,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274037149] [2024-11-19 14:07:16,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:16,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:16,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:16,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274037149] [2024-11-19 14:07:16,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274037149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:16,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899963483] [2024-11-19 14:07:16,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:16,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:16,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:16,666 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:16,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:07:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:16,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:07:16,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:16,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:16,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:16,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:16,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899963483] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:16,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:16,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 14:07:16,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732557121] [2024-11-19 14:07:16,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:16,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:07:16,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:16,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:07:16,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:07:16,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-19 14:07:16,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 200 flow. Second operand has 12 states, 12 states have (on average 41.166666666666664) internal successors, (494), 12 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:16,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:16,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-19 14:07:16,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:18,899 INFO L124 PetriNetUnfolderBase]: 17680/29153 cut-off events. [2024-11-19 14:07:18,899 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2024-11-19 14:07:18,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51715 conditions, 29153 events. 17680/29153 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 1451. Compared 246179 event pairs, 12761 based on Foata normal form. 3/25277 useless extension candidates. Maximal degree in co-relation 51645. Up to 21577 conditions per place. [2024-11-19 14:07:19,080 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 40 selfloop transitions, 13 changer transitions 0/89 dead transitions. [2024-11-19 14:07:19,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 360 flow [2024-11-19 14:07:19,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:07:19,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:07:19,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 456 transitions. [2024-11-19 14:07:19,086 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-19 14:07:19,087 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 200 flow. Second operand 10 states and 456 transitions. [2024-11-19 14:07:19,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 360 flow [2024-11-19 14:07:19,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 314 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-19 14:07:19,091 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 252 flow [2024-11-19 14:07:19,092 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=252, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2024-11-19 14:07:19,093 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 8 predicate places. [2024-11-19 14:07:19,093 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 252 flow [2024-11-19 14:07:19,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 41.166666666666664) internal successors, (494), 12 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:19,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:19,094 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:19,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 14:07:19,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-19 14:07:19,299 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-19 14:07:19,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:19,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1146063111, now seen corresponding path program 1 times [2024-11-19 14:07:19,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:19,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558159202] [2024-11-19 14:07:19,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:19,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:19,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:19,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558159202] [2024-11-19 14:07:19,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558159202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:19,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:19,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:07:19,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384328211] [2024-11-19 14:07:19,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:19,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:19,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:19,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:19,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:19,411 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-19 14:07:19,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:19,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:19,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-19 14:07:19,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:22,891 INFO L124 PetriNetUnfolderBase]: 35361/59053 cut-off events. [2024-11-19 14:07:22,891 INFO L125 PetriNetUnfolderBase]: For 567/567 co-relation queries the response was YES. [2024-11-19 14:07:23,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103912 conditions, 59053 events. 35361/59053 cut-off events. For 567/567 co-relation queries the response was YES. Maximal size of possible extension queue 2680. Compared 544043 event pairs, 8077 based on Foata normal form. 955/52276 useless extension candidates. Maximal degree in co-relation 103878. Up to 28557 conditions per place. [2024-11-19 14:07:23,342 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 121 selfloop transitions, 4 changer transitions 1/159 dead transitions. [2024-11-19 14:07:23,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 159 transitions, 652 flow [2024-11-19 14:07:23,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:07:23,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:07:23,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 308 transitions. [2024-11-19 14:07:23,344 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-11-19 14:07:23,344 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 252 flow. Second operand 5 states and 308 transitions. [2024-11-19 14:07:23,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 159 transitions, 652 flow [2024-11-19 14:07:23,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 159 transitions, 641 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-19 14:07:23,348 INFO L231 Difference]: Finished difference. Result has 97 places, 91 transitions, 269 flow [2024-11-19 14:07:23,349 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=97, PETRI_TRANSITIONS=91} [2024-11-19 14:07:23,349 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 13 predicate places. [2024-11-19 14:07:23,350 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 91 transitions, 269 flow [2024-11-19 14:07:23,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:23,350 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:23,350 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:23,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:07:23,351 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-19 14:07:23,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:23,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1101535529, now seen corresponding path program 1 times [2024-11-19 14:07:23,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:23,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146620561] [2024-11-19 14:07:23,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:23,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:23,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:23,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:23,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146620561] [2024-11-19 14:07:23,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146620561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:23,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:23,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:07:23,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462515114] [2024-11-19 14:07:23,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:23,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:07:23,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:23,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:07:23,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:07:23,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-19 14:07:23,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 91 transitions, 269 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:23,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:23,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-19 14:07:23,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:26,350 INFO L124 PetriNetUnfolderBase]: 26496/43856 cut-off events. [2024-11-19 14:07:26,350 INFO L125 PetriNetUnfolderBase]: For 2397/2429 co-relation queries the response was YES. [2024-11-19 14:07:26,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79471 conditions, 43856 events. 26496/43856 cut-off events. For 2397/2429 co-relation queries the response was YES. Maximal size of possible extension queue 2232. Compared 390811 event pairs, 18803 based on Foata normal form. 33/38258 useless extension candidates. Maximal degree in co-relation 79437. Up to 32364 conditions per place. [2024-11-19 14:07:26,667 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 50 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2024-11-19 14:07:26,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 370 flow [2024-11-19 14:07:26,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:07:26,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:07:26,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-11-19 14:07:26,669 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6706349206349206 [2024-11-19 14:07:26,669 INFO L175 Difference]: Start difference. First operand has 97 places, 91 transitions, 269 flow. Second operand 3 states and 169 transitions. [2024-11-19 14:07:26,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 370 flow [2024-11-19 14:07:26,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 90 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:07:26,687 INFO L231 Difference]: Finished difference. Result has 98 places, 90 transitions, 268 flow [2024-11-19 14:07:26,687 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=98, PETRI_TRANSITIONS=90} [2024-11-19 14:07:26,688 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 14 predicate places. [2024-11-19 14:07:26,688 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 90 transitions, 268 flow [2024-11-19 14:07:26,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:26,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:26,688 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:26,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:07:26,689 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-19 14:07:26,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:26,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1779969763, now seen corresponding path program 1 times [2024-11-19 14:07:26,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:26,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594618076] [2024-11-19 14:07:26,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:26,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:26,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:26,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594618076] [2024-11-19 14:07:26,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594618076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:26,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796062277] [2024-11-19 14:07:26,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:26,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:26,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:26,991 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:26,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:07:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:27,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 14:07:27,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:27,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 14:07:27,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:27,252 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:27,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-19 14:07:27,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-19 14:07:27,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:27,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796062277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:27,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:27,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-19 14:07:27,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533028187] [2024-11-19 14:07:27,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:27,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 14:07:27,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:27,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 14:07:27,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-19 14:07:27,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-19 14:07:27,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 90 transitions, 268 flow. Second operand has 11 states, 11 states have (on average 44.81818181818182) internal successors, (493), 11 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:27,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:27,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-19 14:07:27,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:32,265 INFO L124 PetriNetUnfolderBase]: 45706/72657 cut-off events. [2024-11-19 14:07:32,266 INFO L125 PetriNetUnfolderBase]: For 3719/3751 co-relation queries the response was YES. [2024-11-19 14:07:32,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133083 conditions, 72657 events. 45706/72657 cut-off events. For 3719/3751 co-relation queries the response was YES. Maximal size of possible extension queue 3085. Compared 650495 event pairs, 15736 based on Foata normal form. 32/64978 useless extension candidates. Maximal degree in co-relation 133056. Up to 22344 conditions per place. [2024-11-19 14:07:32,795 INFO L140 encePairwiseOnDemand]: 74/84 looper letters, 88 selfloop transitions, 13 changer transitions 0/139 dead transitions. [2024-11-19 14:07:32,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 139 transitions, 588 flow [2024-11-19 14:07:32,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 14:07:32,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 14:07:32,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 426 transitions. [2024-11-19 14:07:32,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6339285714285714 [2024-11-19 14:07:32,798 INFO L175 Difference]: Start difference. First operand has 98 places, 90 transitions, 268 flow. Second operand 8 states and 426 transitions. [2024-11-19 14:07:32,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 139 transitions, 588 flow [2024-11-19 14:07:32,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 139 transitions, 584 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:07:32,810 INFO L231 Difference]: Finished difference. Result has 105 places, 94 transitions, 319 flow [2024-11-19 14:07:32,810 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=319, PETRI_PLACES=105, PETRI_TRANSITIONS=94} [2024-11-19 14:07:32,811 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 21 predicate places. [2024-11-19 14:07:32,811 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 94 transitions, 319 flow [2024-11-19 14:07:32,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 44.81818181818182) internal successors, (493), 11 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:32,812 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:32,812 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:32,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 14:07:33,012 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 [2024-11-19 14:07:33,013 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-19 14:07:33,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:33,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1779969764, now seen corresponding path program 1 times [2024-11-19 14:07:33,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:33,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720217794] [2024-11-19 14:07:33,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:33,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:33,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:33,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:33,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720217794] [2024-11-19 14:07:33,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720217794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:33,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:33,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:07:33,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395311174] [2024-11-19 14:07:33,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:33,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:33,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:33,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:33,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:33,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-19 14:07:33,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 94 transitions, 319 flow. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:33,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:33,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-19 14:07:33,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:37,392 INFO L124 PetriNetUnfolderBase]: 39246/60585 cut-off events. [2024-11-19 14:07:37,393 INFO L125 PetriNetUnfolderBase]: For 12636/12668 co-relation queries the response was YES. [2024-11-19 14:07:37,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122326 conditions, 60585 events. 39246/60585 cut-off events. For 12636/12668 co-relation queries the response was YES. Maximal size of possible extension queue 2524. Compared 510143 event pairs, 15949 based on Foata normal form. 32/56707 useless extension candidates. Maximal degree in co-relation 122287. Up to 29774 conditions per place. [2024-11-19 14:07:38,192 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 92 selfloop transitions, 4 changer transitions 0/134 dead transitions. [2024-11-19 14:07:38,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 134 transitions, 606 flow [2024-11-19 14:07:38,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:07:38,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:07:38,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2024-11-19 14:07:38,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2024-11-19 14:07:38,194 INFO L175 Difference]: Start difference. First operand has 105 places, 94 transitions, 319 flow. Second operand 4 states and 248 transitions. [2024-11-19 14:07:38,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 134 transitions, 606 flow [2024-11-19 14:07:38,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 134 transitions, 596 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 14:07:38,217 INFO L231 Difference]: Finished difference. Result has 103 places, 92 transitions, 308 flow [2024-11-19 14:07:38,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=103, PETRI_TRANSITIONS=92} [2024-11-19 14:07:38,218 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 19 predicate places. [2024-11-19 14:07:38,218 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 92 transitions, 308 flow [2024-11-19 14:07:38,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:38,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:38,218 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2024-11-19 14:07:38,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 14:07:38,219 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-19 14:07:38,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:38,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1681187984, now seen corresponding path program 2 times [2024-11-19 14:07:38,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:38,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742474431] [2024-11-19 14:07:38,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:07:38,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:38,236 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:07:38,236 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:07:38,287 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:07:38,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:38,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742474431] [2024-11-19 14:07:38,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742474431] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:38,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335125649] [2024-11-19 14:07:38,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:07:38,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:38,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:38,293 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:38,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:07:38,362 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:07:38,362 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:07:38,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 14:07:38,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:38,392 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:07:38,393 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:38,434 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:07:38,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335125649] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:38,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:38,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-11-19 14:07:38,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823599476] [2024-11-19 14:07:38,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:38,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:07:38,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:38,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:07:38,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 14:07:38,456 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2024-11-19 14:07:38,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 92 transitions, 308 flow. Second operand has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 6 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:38,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:38,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2024-11-19 14:07:38,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:42,993 INFO L124 PetriNetUnfolderBase]: 39247/63088 cut-off events. [2024-11-19 14:07:42,993 INFO L125 PetriNetUnfolderBase]: For 18823/18855 co-relation queries the response was YES. [2024-11-19 14:07:43,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129347 conditions, 63088 events. 39247/63088 cut-off events. For 18823/18855 co-relation queries the response was YES. Maximal size of possible extension queue 2626. Compared 562850 event pairs, 28059 based on Foata normal form. 33/58325 useless extension candidates. Maximal degree in co-relation 129315. Up to 48172 conditions per place. [2024-11-19 14:07:43,445 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 39 selfloop transitions, 16 changer transitions 0/91 dead transitions. [2024-11-19 14:07:43,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 91 transitions, 408 flow [2024-11-19 14:07:43,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:07:43,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:07:43,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 275 transitions. [2024-11-19 14:07:43,447 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5456349206349206 [2024-11-19 14:07:43,447 INFO L175 Difference]: Start difference. First operand has 103 places, 92 transitions, 308 flow. Second operand 6 states and 275 transitions. [2024-11-19 14:07:43,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 91 transitions, 408 flow [2024-11-19 14:07:43,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 91 transitions, 390 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-19 14:07:43,486 INFO L231 Difference]: Finished difference. Result has 100 places, 91 transitions, 312 flow [2024-11-19 14:07:43,486 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=100, PETRI_TRANSITIONS=91} [2024-11-19 14:07:43,487 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 16 predicate places. [2024-11-19 14:07:43,487 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 91 transitions, 312 flow [2024-11-19 14:07:43,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 6 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:43,487 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:43,487 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:43,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 14:07:43,688 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 [2024-11-19 14:07:43,688 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-19 14:07:43,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:43,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1153979142, now seen corresponding path program 1 times [2024-11-19 14:07:43,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:43,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57243984] [2024-11-19 14:07:43,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:43,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:43,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:43,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:43,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57243984] [2024-11-19 14:07:43,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57243984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:43,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:43,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:07:43,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513910638] [2024-11-19 14:07:43,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:43,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:43,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:43,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:43,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:43,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-19 14:07:43,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 91 transitions, 312 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:43,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:43,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-19 14:07:43,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:48,219 INFO L124 PetriNetUnfolderBase]: 45352/68671 cut-off events. [2024-11-19 14:07:48,220 INFO L125 PetriNetUnfolderBase]: For 14349/14381 co-relation queries the response was YES. [2024-11-19 14:07:48,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138446 conditions, 68671 events. 45352/68671 cut-off events. For 14349/14381 co-relation queries the response was YES. Maximal size of possible extension queue 2780. Compared 573603 event pairs, 19307 based on Foata normal form. 1622/66692 useless extension candidates. Maximal degree in co-relation 138360. Up to 37244 conditions per place. [2024-11-19 14:07:48,649 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 97 selfloop transitions, 4 changer transitions 0/136 dead transitions. [2024-11-19 14:07:48,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 136 transitions, 624 flow [2024-11-19 14:07:48,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:07:48,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:07:48,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2024-11-19 14:07:48,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7410714285714286 [2024-11-19 14:07:48,651 INFO L175 Difference]: Start difference. First operand has 100 places, 91 transitions, 312 flow. Second operand 4 states and 249 transitions. [2024-11-19 14:07:48,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 136 transitions, 624 flow [2024-11-19 14:07:48,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 136 transitions, 596 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 14:07:48,676 INFO L231 Difference]: Finished difference. Result has 101 places, 92 transitions, 305 flow [2024-11-19 14:07:48,676 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=305, PETRI_PLACES=101, PETRI_TRANSITIONS=92} [2024-11-19 14:07:48,677 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 17 predicate places. [2024-11-19 14:07:48,677 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 92 transitions, 305 flow [2024-11-19 14:07:48,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:48,677 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:48,678 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] [2024-11-19 14:07:48,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 14:07:48,678 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-19 14:07:48,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:48,680 INFO L85 PathProgramCache]: Analyzing trace with hash -572865167, now seen corresponding path program 1 times [2024-11-19 14:07:48,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:48,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822015507] [2024-11-19 14:07:48,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:48,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:48,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:48,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:48,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822015507] [2024-11-19 14:07:48,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822015507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:48,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:48,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:07:48,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342980138] [2024-11-19 14:07:48,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:48,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:48,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:48,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:48,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:48,740 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2024-11-19 14:07:48,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 92 transitions, 305 flow. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:48,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:48,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2024-11-19 14:07:48,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand