./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.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 6fdb5189ea0a06d32886b44c2108d225ef2901fa5113fdc3856a252d0f653190 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:11:29,453 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:11:29,513 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:11:29,518 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:11:29,518 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:11:29,537 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:11:29,538 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:11:29,538 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:11:29,539 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:11:29,539 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:11:29,540 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:11:29,540 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:11:29,541 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:11:29,541 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:11:29,541 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:11:29,542 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:11:29,542 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:11:29,542 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:11:29,543 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:11:29,543 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:11:29,543 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:11:29,544 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:11:29,545 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:11:29,545 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:11:29,545 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:11:29,546 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:11:29,546 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:11:29,546 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:11:29,547 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:11:29,547 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:11:29,547 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:11:29,548 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:11:29,548 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:11:29,548 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:11:29,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:11:29,549 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:11:29,549 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:11:29,549 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:11:29,550 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:11:29,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:11:29,550 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:11:29,550 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:11:29,551 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:11:29,551 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:11:29,551 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fdb5189ea0a06d32886b44c2108d225ef2901fa5113fdc3856a252d0f653190 [2024-11-09 15:11:29,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:11:29,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:11:29,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:11:29,825 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:11:29,825 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:11:29,826 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2024-11-09 15:11:31,319 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:11:31,538 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:11:31,538 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2024-11-09 15:11:31,551 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f2548249/6314721ad46f45539de99ee4e02e4566/FLAGe658de904 [2024-11-09 15:11:31,896 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f2548249/6314721ad46f45539de99ee4e02e4566 [2024-11-09 15:11:31,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:11:31,900 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:11:31,901 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:11:31,901 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:11:31,907 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:11:31,908 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:11:31" (1/1) ... [2024-11-09 15:11:31,909 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45df9a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:31, skipping insertion in model container [2024-11-09 15:11:31,909 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:11:31" (1/1) ... [2024-11-09 15:11:31,940 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:11:32,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:11:32,215 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:11:32,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:11:32,265 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:11:32,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:32 WrapperNode [2024-11-09 15:11:32,266 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:11:32,267 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:11:32,267 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:11:32,267 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:11:32,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:32" (1/1) ... [2024-11-09 15:11:32,304 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:32" (1/1) ... [2024-11-09 15:11:32,367 INFO L138 Inliner]: procedures = 27, calls = 60, calls flagged for inlining = 19, calls inlined = 27, statements flattened = 418 [2024-11-09 15:11:32,367 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:11:32,368 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:11:32,368 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:11:32,368 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:11:32,383 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:32" (1/1) ... [2024-11-09 15:11:32,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:32" (1/1) ... [2024-11-09 15:11:32,393 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:32" (1/1) ... [2024-11-09 15:11:32,411 INFO L175 MemorySlicer]: Split 30 memory accesses to 3 slices as follows [2, 4, 24]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 1, 3]. [2024-11-09 15:11:32,411 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:32" (1/1) ... [2024-11-09 15:11:32,411 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:32" (1/1) ... [2024-11-09 15:11:32,423 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:32" (1/1) ... [2024-11-09 15:11:32,428 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:32" (1/1) ... [2024-11-09 15:11:32,431 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:32" (1/1) ... [2024-11-09 15:11:32,433 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:32" (1/1) ... [2024-11-09 15:11:32,438 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:11:32,439 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:11:32,441 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:11:32,441 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:11:32,442 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:32" (1/1) ... [2024-11-09 15:11:32,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:11:32,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:11:32,482 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 15:11:32,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 15:11:32,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:11:32,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-09 15:11:32,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-09 15:11:32,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-09 15:11:32,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:11:32,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:11:32,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 15:11:32,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:11:32,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:11:32,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 15:11:32,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-09 15:11:32,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-09 15:11:32,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-09 15:11:32,538 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:11:32,538 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:11:32,538 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:11:32,538 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:11:32,538 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 15:11:32,538 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 15:11:32,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:11:32,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:11:32,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 15:11:32,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 15:11:32,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 15:11:32,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:11:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:11:32,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:11:32,544 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:11:32,713 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:11:32,716 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:11:33,423 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:11:33,423 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:11:34,037 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:11:34,037 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-09 15:11:34,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:11:34 BoogieIcfgContainer [2024-11-09 15:11:34,038 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:11:34,040 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:11:34,041 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:11:34,044 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:11:34,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:11:31" (1/3) ... [2024-11-09 15:11:34,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7534d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:11:34, skipping insertion in model container [2024-11-09 15:11:34,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:11:32" (2/3) ... [2024-11-09 15:11:34,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7534d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:11:34, skipping insertion in model container [2024-11-09 15:11:34,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:11:34" (3/3) ... [2024-11-09 15:11:34,048 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product-alt.wvr.c [2024-11-09 15:11:34,066 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:11:34,066 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-11-09 15:11:34,066 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:11:34,256 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 15:11:34,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 83 transitions, 187 flow [2024-11-09 15:11:34,360 INFO L124 PetriNetUnfolderBase]: 7/80 cut-off events. [2024-11-09 15:11:34,361 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 15:11:34,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 80 events. 7/80 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 274 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2024-11-09 15:11:34,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 83 transitions, 187 flow [2024-11-09 15:11:34,370 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 78 transitions, 171 flow [2024-11-09 15:11:34,379 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:11:34,388 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;@77832d93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:11:34,389 INFO L334 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2024-11-09 15:11:34,391 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:11:34,391 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:11:34,392 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:11:34,392 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:34,392 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:11:34,393 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 15:11:34,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:34,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1368666, now seen corresponding path program 1 times [2024-11-09 15:11:34,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:34,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580000258] [2024-11-09 15:11:34,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:34,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:34,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:34,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:34,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580000258] [2024-11-09 15:11:34,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580000258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:11:34,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:11:34,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:11:34,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034888589] [2024-11-09 15:11:34,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:11:34,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:11:34,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:34,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:11:34,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:11:34,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 83 [2024-11-09 15:11:34,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:34,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:34,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 83 [2024-11-09 15:11:34,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:36,354 INFO L124 PetriNetUnfolderBase]: 4166/6692 cut-off events. [2024-11-09 15:11:36,355 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2024-11-09 15:11:36,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12884 conditions, 6692 events. 4166/6692 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 41308 event pairs, 3616 based on Foata normal form. 3/3715 useless extension candidates. Maximal degree in co-relation 12198. Up to 5909 conditions per place. [2024-11-09 15:11:36,417 INFO L140 encePairwiseOnDemand]: 60/83 looper letters, 52 selfloop transitions, 11 changer transitions 0/81 dead transitions. [2024-11-09 15:11:36,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 81 transitions, 303 flow [2024-11-09 15:11:36,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:11:36,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:11:36,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-11-09 15:11:36,433 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4789156626506024 [2024-11-09 15:11:36,434 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 171 flow. Second operand 4 states and 159 transitions. [2024-11-09 15:11:36,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 81 transitions, 303 flow [2024-11-09 15:11:36,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 81 transitions, 294 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 15:11:36,454 INFO L231 Difference]: Finished difference. Result has 76 places, 81 transitions, 242 flow [2024-11-09 15:11:36,456 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=76, PETRI_TRANSITIONS=81} [2024-11-09 15:11:36,462 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -5 predicate places. [2024-11-09 15:11:36,463 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 81 transitions, 242 flow [2024-11-09 15:11:36,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:36,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:36,463 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:11:36,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:11:36,464 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 15:11:36,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:36,464 INFO L85 PathProgramCache]: Analyzing trace with hash 2120595652, now seen corresponding path program 1 times [2024-11-09 15:11:36,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:36,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107515941] [2024-11-09 15:11:36,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:36,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:36,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:36,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:36,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107515941] [2024-11-09 15:11:36,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107515941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:11:36,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276465717] [2024-11-09 15:11:36,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:36,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:11:36,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:11:36,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:11:36,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:11:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:36,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:11:36,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:11:36,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:36,849 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:11:36,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276465717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:11:36,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:11:36,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:11:36,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863333374] [2024-11-09 15:11:36,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:11:36,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:11:36,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:36,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:11:36,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:11:36,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 83 [2024-11-09 15:11:36,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 81 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:36,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:36,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 83 [2024-11-09 15:11:36,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:38,149 INFO L124 PetriNetUnfolderBase]: 4166/6689 cut-off events. [2024-11-09 15:11:38,150 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-11-09 15:11:38,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12812 conditions, 6689 events. 4166/6689 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 41343 event pairs, 3616 based on Foata normal form. 3/3717 useless extension candidates. Maximal degree in co-relation 12740. Up to 5894 conditions per place. [2024-11-09 15:11:38,193 INFO L140 encePairwiseOnDemand]: 69/83 looper letters, 41 selfloop transitions, 19 changer transitions 0/78 dead transitions. [2024-11-09 15:11:38,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 78 transitions, 350 flow [2024-11-09 15:11:38,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:11:38,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:11:38,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-11-09 15:11:38,196 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3795180722891566 [2024-11-09 15:11:38,196 INFO L175 Difference]: Start difference. First operand has 76 places, 81 transitions, 242 flow. Second operand 6 states and 189 transitions. [2024-11-09 15:11:38,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 78 transitions, 350 flow [2024-11-09 15:11:38,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 78 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:11:38,199 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 268 flow [2024-11-09 15:11:38,199 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2024-11-09 15:11:38,200 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -3 predicate places. [2024-11-09 15:11:38,200 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 268 flow [2024-11-09 15:11:38,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:38,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:38,201 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 15:11:38,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 15:11:38,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:11:38,405 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 15:11:38,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:38,406 INFO L85 PathProgramCache]: Analyzing trace with hash 2122047894, now seen corresponding path program 1 times [2024-11-09 15:11:38,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:38,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030434136] [2024-11-09 15:11:38,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:38,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:38,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:38,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:38,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030434136] [2024-11-09 15:11:38,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030434136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:11:38,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:11:38,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:11:38,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471040691] [2024-11-09 15:11:38,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:11:38,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:11:38,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:38,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:11:38,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:11:38,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 83 [2024-11-09 15:11:38,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:38,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:38,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 83 [2024-11-09 15:11:38,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:39,861 INFO L124 PetriNetUnfolderBase]: 4169/6702 cut-off events. [2024-11-09 15:11:39,862 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-11-09 15:11:39,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12872 conditions, 6702 events. 4169/6702 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 41507 event pairs, 3616 based on Foata normal form. 1/3730 useless extension candidates. Maximal degree in co-relation 12761. Up to 5912 conditions per place. [2024-11-09 15:11:39,919 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 62 selfloop transitions, 6 changer transitions 0/87 dead transitions. [2024-11-09 15:11:39,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 87 transitions, 458 flow [2024-11-09 15:11:39,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:11:39,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:11:39,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-11-09 15:11:39,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4759036144578313 [2024-11-09 15:11:39,923 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 268 flow. Second operand 4 states and 158 transitions. [2024-11-09 15:11:39,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 87 transitions, 458 flow [2024-11-09 15:11:39,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 87 transitions, 394 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-09 15:11:39,930 INFO L231 Difference]: Finished difference. Result has 78 places, 82 transitions, 265 flow [2024-11-09 15:11:39,930 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=265, PETRI_PLACES=78, PETRI_TRANSITIONS=82} [2024-11-09 15:11:39,931 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -3 predicate places. [2024-11-09 15:11:39,931 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 82 transitions, 265 flow [2024-11-09 15:11:39,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:39,933 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:39,933 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:11:39,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 15:11:39,934 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 15:11:39,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:39,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1313957154, now seen corresponding path program 1 times [2024-11-09 15:11:39,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:39,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937206812] [2024-11-09 15:11:39,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:39,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:40,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:40,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:40,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937206812] [2024-11-09 15:11:40,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937206812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:11:40,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776841856] [2024-11-09 15:11:40,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:40,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:11:40,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:11:40,042 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:11:40,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:11:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:40,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:11:40,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:11:40,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:40,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:11:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:40,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776841856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:11:40,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:11:40,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:11:40,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611379362] [2024-11-09 15:11:40,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:11:40,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:11:40,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:40,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:11:40,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:11:40,290 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 83 [2024-11-09 15:11:40,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 82 transitions, 265 flow. Second operand has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:40,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:40,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 83 [2024-11-09 15:11:40,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:41,466 INFO L124 PetriNetUnfolderBase]: 4181/6750 cut-off events. [2024-11-09 15:11:41,467 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-11-09 15:11:41,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12993 conditions, 6750 events. 4181/6750 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 42024 event pairs, 3616 based on Foata normal form. 12/3789 useless extension candidates. Maximal degree in co-relation 12889. Up to 5923 conditions per place. [2024-11-09 15:11:41,511 INFO L140 encePairwiseOnDemand]: 69/83 looper letters, 52 selfloop transitions, 42 changer transitions 0/112 dead transitions. [2024-11-09 15:11:41,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 112 transitions, 612 flow [2024-11-09 15:11:41,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:11:41,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:11:41,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2024-11-09 15:11:41,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3686746987951807 [2024-11-09 15:11:41,514 INFO L175 Difference]: Start difference. First operand has 78 places, 82 transitions, 265 flow. Second operand 10 states and 306 transitions. [2024-11-09 15:11:41,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 112 transitions, 612 flow [2024-11-09 15:11:41,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 112 transitions, 605 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:11:41,519 INFO L231 Difference]: Finished difference. Result has 89 places, 112 transitions, 555 flow [2024-11-09 15:11:41,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=555, PETRI_PLACES=89, PETRI_TRANSITIONS=112} [2024-11-09 15:11:41,520 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 8 predicate places. [2024-11-09 15:11:41,520 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 112 transitions, 555 flow [2024-11-09 15:11:41,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:41,521 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:41,521 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:11:41,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 15:11:41,721 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,SelfDestructingSolverStorable3 [2024-11-09 15:11:41,722 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 15:11:41,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:41,722 INFO L85 PathProgramCache]: Analyzing trace with hash -817322298, now seen corresponding path program 1 times [2024-11-09 15:11:41,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:41,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714768928] [2024-11-09 15:11:41,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:41,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:41,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:41,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:41,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714768928] [2024-11-09 15:11:41,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714768928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:11:41,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:11:41,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:11:41,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940897337] [2024-11-09 15:11:41,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:11:41,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:11:41,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:41,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:11:41,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:11:41,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 83 [2024-11-09 15:11:41,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 112 transitions, 555 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:41,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:41,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 83 [2024-11-09 15:11:41,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:42,848 INFO L124 PetriNetUnfolderBase]: 4196/6821 cut-off events. [2024-11-09 15:11:42,849 INFO L125 PetriNetUnfolderBase]: For 344/344 co-relation queries the response was YES. [2024-11-09 15:11:42,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13337 conditions, 6821 events. 4196/6821 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 42339 event pairs, 3616 based on Foata normal form. 2/3853 useless extension candidates. Maximal degree in co-relation 13115. Up to 5946 conditions per place. [2024-11-09 15:11:42,883 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 114 selfloop transitions, 15 changer transitions 0/150 dead transitions. [2024-11-09 15:11:42,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 150 transitions, 1099 flow [2024-11-09 15:11:42,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:11:42,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:11:42,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 204 transitions. [2024-11-09 15:11:42,885 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.491566265060241 [2024-11-09 15:11:42,885 INFO L175 Difference]: Start difference. First operand has 89 places, 112 transitions, 555 flow. Second operand 5 states and 204 transitions. [2024-11-09 15:11:42,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 150 transitions, 1099 flow [2024-11-09 15:11:42,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 150 transitions, 1041 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-11-09 15:11:42,895 INFO L231 Difference]: Finished difference. Result has 93 places, 118 transitions, 617 flow [2024-11-09 15:11:42,895 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=617, PETRI_PLACES=93, PETRI_TRANSITIONS=118} [2024-11-09 15:11:42,896 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 12 predicate places. [2024-11-09 15:11:42,896 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 118 transitions, 617 flow [2024-11-09 15:11:42,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:42,898 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:42,898 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 15:11:42,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:11:42,898 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 15:11:42,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:42,899 INFO L85 PathProgramCache]: Analyzing trace with hash 912089526, now seen corresponding path program 1 times [2024-11-09 15:11:42,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:42,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466045310] [2024-11-09 15:11:42,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:42,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:42,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:42,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:42,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466045310] [2024-11-09 15:11:42,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466045310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:11:42,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374239249] [2024-11-09 15:11:42,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:42,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:11:42,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:11:42,994 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:11:42,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:11:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:43,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:11:43,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:11:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:43,162 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:11:43,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374239249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:11:43,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:11:43,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-09 15:11:43,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532204562] [2024-11-09 15:11:43,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:11:43,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:11:43,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:43,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:11:43,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:11:43,172 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 83 [2024-11-09 15:11:43,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 118 transitions, 617 flow. Second operand has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:43,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:43,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 83 [2024-11-09 15:11:43,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:44,432 INFO L124 PetriNetUnfolderBase]: 4196/6819 cut-off events. [2024-11-09 15:11:44,432 INFO L125 PetriNetUnfolderBase]: For 300/300 co-relation queries the response was YES. [2024-11-09 15:11:44,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13334 conditions, 6819 events. 4196/6819 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 42394 event pairs, 3616 based on Foata normal form. 2/3850 useless extension candidates. Maximal degree in co-relation 13116. Up to 5926 conditions per place. [2024-11-09 15:11:44,477 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 89 selfloop transitions, 22 changer transitions 0/130 dead transitions. [2024-11-09 15:11:44,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 130 transitions, 932 flow [2024-11-09 15:11:44,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:11:44,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:11:44,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-11-09 15:11:44,479 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41365461847389556 [2024-11-09 15:11:44,480 INFO L175 Difference]: Start difference. First operand has 93 places, 118 transitions, 617 flow. Second operand 6 states and 206 transitions. [2024-11-09 15:11:44,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 130 transitions, 932 flow [2024-11-09 15:11:44,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 130 transitions, 930 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-09 15:11:44,488 INFO L231 Difference]: Finished difference. Result has 97 places, 117 transitions, 655 flow [2024-11-09 15:11:44,489 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=655, PETRI_PLACES=97, PETRI_TRANSITIONS=117} [2024-11-09 15:11:44,490 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 16 predicate places. [2024-11-09 15:11:44,490 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 117 transitions, 655 flow [2024-11-09 15:11:44,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:44,491 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:44,491 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 15:11:44,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 15:11:44,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:11:44,696 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 15:11:44,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:44,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1789994421, now seen corresponding path program 1 times [2024-11-09 15:11:44,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:44,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779755849] [2024-11-09 15:11:44,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:44,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:44,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:44,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:44,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779755849] [2024-11-09 15:11:44,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779755849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:11:44,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815532317] [2024-11-09 15:11:44,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:44,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:11:44,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:11:44,824 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:11:44,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:11:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:44,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:11:44,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:11:44,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:44,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:11:45,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:45,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815532317] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:11:45,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:11:45,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 15:11:45,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659076368] [2024-11-09 15:11:45,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:11:45,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:11:45,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:45,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:11:45,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:11:45,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 83 [2024-11-09 15:11:45,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 117 transitions, 655 flow. Second operand has 12 states, 12 states have (on average 26.666666666666668) internal successors, (320), 12 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:45,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:45,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 83 [2024-11-09 15:11:45,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:45,966 INFO L124 PetriNetUnfolderBase]: 4229/6966 cut-off events. [2024-11-09 15:11:45,966 INFO L125 PetriNetUnfolderBase]: For 608/608 co-relation queries the response was YES. [2024-11-09 15:11:45,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13940 conditions, 6966 events. 4229/6966 cut-off events. For 608/608 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 43725 event pairs, 3616 based on Foata normal form. 6/4003 useless extension candidates. Maximal degree in co-relation 13535. Up to 5967 conditions per place. [2024-11-09 15:11:46,004 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 136 selfloop transitions, 38 changer transitions 0/193 dead transitions. [2024-11-09 15:11:46,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 193 transitions, 1613 flow [2024-11-09 15:11:46,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:11:46,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:11:46,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 326 transitions. [2024-11-09 15:11:46,006 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3927710843373494 [2024-11-09 15:11:46,006 INFO L175 Difference]: Start difference. First operand has 97 places, 117 transitions, 655 flow. Second operand 10 states and 326 transitions. [2024-11-09 15:11:46,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 193 transitions, 1613 flow [2024-11-09 15:11:46,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 193 transitions, 1473 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-11-09 15:11:46,015 INFO L231 Difference]: Finished difference. Result has 104 places, 141 transitions, 872 flow [2024-11-09 15:11:46,015 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=872, PETRI_PLACES=104, PETRI_TRANSITIONS=141} [2024-11-09 15:11:46,016 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 23 predicate places. [2024-11-09 15:11:46,016 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 141 transitions, 872 flow [2024-11-09 15:11:46,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.666666666666668) internal successors, (320), 12 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:46,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:46,017 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:11:46,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 15:11:46,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:11:46,218 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 15:11:46,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:46,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1454510550, now seen corresponding path program 1 times [2024-11-09 15:11:46,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:46,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934042089] [2024-11-09 15:11:46,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:46,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:46,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:11:46,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:46,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934042089] [2024-11-09 15:11:46,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934042089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:11:46,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:11:46,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:11:46,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956196548] [2024-11-09 15:11:46,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:11:46,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:11:46,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:46,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:11:46,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:11:46,586 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 83 [2024-11-09 15:11:46,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 141 transitions, 872 flow. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:46,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:46,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 83 [2024-11-09 15:11:46,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:47,425 INFO L124 PetriNetUnfolderBase]: 4352/7180 cut-off events. [2024-11-09 15:11:47,425 INFO L125 PetriNetUnfolderBase]: For 639/639 co-relation queries the response was YES. [2024-11-09 15:11:47,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14382 conditions, 7180 events. 4352/7180 cut-off events. For 639/639 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 44785 event pairs, 3740 based on Foata normal form. 0/4211 useless extension candidates. Maximal degree in co-relation 14101. Up to 6030 conditions per place. [2024-11-09 15:11:47,457 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 125 selfloop transitions, 8 changer transitions 15/168 dead transitions. [2024-11-09 15:11:47,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 168 transitions, 1295 flow [2024-11-09 15:11:47,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:11:47,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:11:47,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2024-11-09 15:11:47,458 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5391566265060241 [2024-11-09 15:11:47,458 INFO L175 Difference]: Start difference. First operand has 104 places, 141 transitions, 872 flow. Second operand 4 states and 179 transitions. [2024-11-09 15:11:47,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 168 transitions, 1295 flow [2024-11-09 15:11:47,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 168 transitions, 1269 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-09 15:11:47,466 INFO L231 Difference]: Finished difference. Result has 106 places, 140 transitions, 869 flow [2024-11-09 15:11:47,466 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=869, PETRI_PLACES=106, PETRI_TRANSITIONS=140} [2024-11-09 15:11:47,467 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 25 predicate places. [2024-11-09 15:11:47,467 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 140 transitions, 869 flow [2024-11-09 15:11:47,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:47,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:47,467 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-09 15:11:47,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 15:11:47,468 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 15:11:47,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:47,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1493479732, now seen corresponding path program 2 times [2024-11-09 15:11:47,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:47,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601913901] [2024-11-09 15:11:47,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:47,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:47,645 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:11:47,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:47,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601913901] [2024-11-09 15:11:47,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601913901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:11:47,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70428658] [2024-11-09 15:11:47,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:11:47,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:11:47,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:11:47,649 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:11:47,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 15:11:47,776 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:11:47,777 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:11:47,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:11:47,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:11:47,825 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:11:47,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:11:47,856 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:11:47,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70428658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:11:47,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:11:47,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-09 15:11:47,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107392513] [2024-11-09 15:11:47,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:11:47,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 15:11:47,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:47,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 15:11:47,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-09 15:11:47,908 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 83 [2024-11-09 15:11:47,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 140 transitions, 869 flow. Second operand has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:47,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:47,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 83 [2024-11-09 15:11:47,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:49,037 INFO L124 PetriNetUnfolderBase]: 4241/7016 cut-off events. [2024-11-09 15:11:49,038 INFO L125 PetriNetUnfolderBase]: For 1224/1224 co-relation queries the response was YES. [2024-11-09 15:11:49,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14671 conditions, 7016 events. 4241/7016 cut-off events. For 1224/1224 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 44013 event pairs, 3616 based on Foata normal form. 14/4604 useless extension candidates. Maximal degree in co-relation 14348. Up to 6022 conditions per place. [2024-11-09 15:11:49,067 INFO L140 encePairwiseOnDemand]: 69/83 looper letters, 56 selfloop transitions, 79 changer transitions 0/152 dead transitions. [2024-11-09 15:11:49,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 152 transitions, 1235 flow [2024-11-09 15:11:49,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 15:11:49,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 15:11:49,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 603 transitions. [2024-11-09 15:11:49,070 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30271084337349397 [2024-11-09 15:11:49,070 INFO L175 Difference]: Start difference. First operand has 106 places, 140 transitions, 869 flow. Second operand 24 states and 603 transitions. [2024-11-09 15:11:49,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 152 transitions, 1235 flow [2024-11-09 15:11:49,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 152 transitions, 1217 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:11:49,079 INFO L231 Difference]: Finished difference. Result has 127 places, 152 transitions, 1143 flow [2024-11-09 15:11:49,080 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1143, PETRI_PLACES=127, PETRI_TRANSITIONS=152} [2024-11-09 15:11:49,080 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 46 predicate places. [2024-11-09 15:11:49,081 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 152 transitions, 1143 flow [2024-11-09 15:11:49,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:49,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:49,082 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:11:49,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 15:11:49,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:11:49,283 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 15:11:49,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:49,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1380416714, now seen corresponding path program 1 times [2024-11-09 15:11:49,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:49,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022560266] [2024-11-09 15:11:49,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:49,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:49,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:11:49,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:49,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022560266] [2024-11-09 15:11:49,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022560266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:11:49,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:11:49,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:11:49,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884162244] [2024-11-09 15:11:49,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:11:49,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:11:49,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:49,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:11:49,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:11:49,554 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 83 [2024-11-09 15:11:49,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 152 transitions, 1143 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:49,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:49,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 83 [2024-11-09 15:11:49,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:50,580 INFO L124 PetriNetUnfolderBase]: 4368/7272 cut-off events. [2024-11-09 15:11:50,580 INFO L125 PetriNetUnfolderBase]: For 1597/1597 co-relation queries the response was YES. [2024-11-09 15:11:50,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15579 conditions, 7272 events. 4368/7272 cut-off events. For 1597/1597 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 45127 event pairs, 3740 based on Foata normal form. 83/4929 useless extension candidates. Maximal degree in co-relation 15117. Up to 6074 conditions per place. [2024-11-09 15:11:50,612 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 116 selfloop transitions, 32 changer transitions 18/185 dead transitions. [2024-11-09 15:11:50,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 185 transitions, 1700 flow [2024-11-09 15:11:50,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:11:50,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:11:50,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 208 transitions. [2024-11-09 15:11:50,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5012048192771085 [2024-11-09 15:11:50,614 INFO L175 Difference]: Start difference. First operand has 127 places, 152 transitions, 1143 flow. Second operand 5 states and 208 transitions. [2024-11-09 15:11:50,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 185 transitions, 1700 flow [2024-11-09 15:11:50,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 185 transitions, 1486 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-11-09 15:11:50,627 INFO L231 Difference]: Finished difference. Result has 122 places, 162 transitions, 1167 flow [2024-11-09 15:11:50,627 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1167, PETRI_PLACES=122, PETRI_TRANSITIONS=162} [2024-11-09 15:11:50,628 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 41 predicate places. [2024-11-09 15:11:50,628 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 162 transitions, 1167 flow [2024-11-09 15:11:50,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:50,628 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:50,629 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-11-09 15:11:50,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 15:11:50,629 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 15:11:50,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:50,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1018921067, now seen corresponding path program 1 times [2024-11-09 15:11:50,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:50,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165183014] [2024-11-09 15:11:50,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:50,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:50,753 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 15:11:50,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:50,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165183014] [2024-11-09 15:11:50,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165183014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:11:50,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:11:50,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:11:50,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725784921] [2024-11-09 15:11:50,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:11:50,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:11:50,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:11:50,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:11:50,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:11:50,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 83 [2024-11-09 15:11:50,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 162 transitions, 1167 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:50,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:11:50,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 83 [2024-11-09 15:11:50,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:11:51,763 INFO L124 PetriNetUnfolderBase]: 4362/7532 cut-off events. [2024-11-09 15:11:51,764 INFO L125 PetriNetUnfolderBase]: For 2445/2445 co-relation queries the response was YES. [2024-11-09 15:11:51,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16140 conditions, 7532 events. 4362/7532 cut-off events. For 2445/2445 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 50260 event pairs, 3740 based on Foata normal form. 1/5055 useless extension candidates. Maximal degree in co-relation 15746. Up to 6365 conditions per place. [2024-11-09 15:11:51,799 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 131 selfloop transitions, 11 changer transitions 0/161 dead transitions. [2024-11-09 15:11:51,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 161 transitions, 1441 flow [2024-11-09 15:11:51,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:11:51,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:11:51,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-09 15:11:51,801 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4939759036144578 [2024-11-09 15:11:51,801 INFO L175 Difference]: Start difference. First operand has 122 places, 162 transitions, 1167 flow. Second operand 4 states and 164 transitions. [2024-11-09 15:11:51,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 161 transitions, 1441 flow [2024-11-09 15:11:51,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 161 transitions, 1427 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-09 15:11:51,812 INFO L231 Difference]: Finished difference. Result has 125 places, 161 transitions, 1169 flow [2024-11-09 15:11:51,813 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1169, PETRI_PLACES=125, PETRI_TRANSITIONS=161} [2024-11-09 15:11:51,813 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 44 predicate places. [2024-11-09 15:11:51,813 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 161 transitions, 1169 flow [2024-11-09 15:11:51,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:11:51,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:11:51,814 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:11:51,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 15:11:51,814 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 15:11:51,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:11:51,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1485901192, now seen corresponding path program 1 times [2024-11-09 15:11:51,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:11:51,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077234071] [2024-11-09 15:11:51,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:51,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:11:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:53,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:11:53,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:11:53,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077234071] [2024-11-09 15:11:53,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077234071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:11:53,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854141692] [2024-11-09 15:11:53,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:11:53,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:11:53,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:11:53,138 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:11:53,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 15:11:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:11:53,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-09 15:11:53,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:11:53,391 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 23 treesize of output 1 [2024-11-09 15:11:53,549 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 23 treesize of output 1 [2024-11-09 15:11:53,555 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 23 treesize of output 1 [2024-11-09 15:11:53,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:11:53,859 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:11:54,258 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 65 treesize of output 63 [2024-11-09 15:11:54,265 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 124 treesize of output 110 [2024-11-09 15:11:54,277 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 110 treesize of output 106 [2024-11-09 15:11:54,292 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 182 treesize of output 154 [2024-11-09 15:11:55,060 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:11:55,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 1090 treesize of output 1321 [2024-11-09 15:12:44,697 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 20 treesize of output 8 [2024-11-09 15:12:44,728 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 20 treesize of output 8 [2024-11-09 15:12:45,865 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 20 treesize of output 8 [2024-11-09 15:12:46,208 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 20 treesize of output 8 [2024-11-09 15:12:46,231 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 20 treesize of output 8 [2024-11-09 15:12:46,405 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 20 treesize of output 8 [2024-11-09 15:12:46,433 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 20 treesize of output 8 [2024-11-09 15:12:46,615 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 20 treesize of output 8 [2024-11-09 15:12:49,318 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 20 treesize of output 8 [2024-11-09 15:12:49,332 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 20 treesize of output 8