./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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-dev-84cfde4 [2024-10-12 00:05:09,372 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:05:09,453 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:05:09,459 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:05:09,460 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:05:09,479 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:05:09,480 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:05:09,481 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:05:09,481 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:05:09,481 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:05:09,482 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:05:09,482 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:05:09,483 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:05:09,483 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:05:09,484 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:05:09,484 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:05:09,484 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:05:09,485 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:05:09,485 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:05:09,485 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:05:09,486 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:05:09,486 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:05:09,487 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:05:09,487 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:05:09,487 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:05:09,488 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:05:09,488 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:05:09,488 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:05:09,489 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:05:09,489 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:05:09,489 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:05:09,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:05:09,490 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:05:09,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:05:09,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:05:09,491 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:05:09,491 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:05:09,492 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:05:09,492 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:05:09,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:05:09,493 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:05:09,493 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:05:09,493 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:05:09,493 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:05:09,494 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fdb5189ea0a06d32886b44c2108d225ef2901fa5113fdc3856a252d0f653190 [2024-10-12 00:05:09,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:05:09,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:05:09,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:05:09,848 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:05:09,849 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:05:09,850 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2024-10-12 00:05:11,409 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:05:11,664 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:05:11,664 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2024-10-12 00:05:11,677 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/85fc5181c/608a590f2a0442f2864aba1497221a85/FLAGd50534184 [2024-10-12 00:05:11,697 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/85fc5181c/608a590f2a0442f2864aba1497221a85 [2024-10-12 00:05:11,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:05:11,702 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:05:11,704 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:05:11,704 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:05:11,710 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:05:11,711 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:05:11" (1/1) ... [2024-10-12 00:05:11,713 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c562a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:11, skipping insertion in model container [2024-10-12 00:05:11,714 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:05:11" (1/1) ... [2024-10-12 00:05:11,743 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:05:12,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:05:12,012 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:05:12,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:05:12,071 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:05:12,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:12 WrapperNode [2024-10-12 00:05:12,073 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:05:12,074 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:05:12,074 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:05:12,074 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:05:12,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:12" (1/1) ... [2024-10-12 00:05:12,098 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:12" (1/1) ... [2024-10-12 00:05:12,137 INFO L138 Inliner]: procedures = 27, calls = 60, calls flagged for inlining = 19, calls inlined = 27, statements flattened = 418 [2024-10-12 00:05:12,139 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:05:12,140 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:05:12,140 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:05:12,140 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:05:12,160 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:12" (1/1) ... [2024-10-12 00:05:12,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:12" (1/1) ... [2024-10-12 00:05:12,175 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:12" (1/1) ... [2024-10-12 00:05:12,205 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]. [2024-10-12 00:05:12,209 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:12" (1/1) ... [2024-10-12 00:05:12,210 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:12" (1/1) ... [2024-10-12 00:05:12,224 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:12" (1/1) ... [2024-10-12 00:05:12,230 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:12" (1/1) ... [2024-10-12 00:05:12,237 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:12" (1/1) ... [2024-10-12 00:05:12,240 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:12" (1/1) ... [2024-10-12 00:05:12,254 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:05:12,256 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:05:12,256 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:05:12,256 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:05:12,257 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:12" (1/1) ... [2024-10-12 00:05:12,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:05:12,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:12,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 00:05:12,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 00:05:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:05:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-12 00:05:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-12 00:05:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-12 00:05:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-12 00:05:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-12 00:05:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-12 00:05:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-12 00:05:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-12 00:05:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-12 00:05:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-12 00:05:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-12 00:05:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-12 00:05:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:05:12,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:05:12,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:05:12,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:05:12,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-12 00:05:12,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-12 00:05:12,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:05:12,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 00:05:12,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-12 00:05:12,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-12 00:05:12,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-12 00:05:12,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-12 00:05:12,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:05:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:05:12,364 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-12 00:05:12,556 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:05:12,561 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:05:13,260 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:05:13,260 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:05:13,897 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:05:13,898 INFO L314 CfgBuilder]: Removed 7 assume(true) statements. [2024-10-12 00:05:13,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:05:13 BoogieIcfgContainer [2024-10-12 00:05:13,899 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:05:13,901 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:05:13,901 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:05:13,906 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:05:13,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:05:11" (1/3) ... [2024-10-12 00:05:13,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a7b428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:05:13, skipping insertion in model container [2024-10-12 00:05:13,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:12" (2/3) ... [2024-10-12 00:05:13,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a7b428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:05:13, skipping insertion in model container [2024-10-12 00:05:13,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:05:13" (3/3) ... [2024-10-12 00:05:13,910 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product-alt.wvr.c [2024-10-12 00:05:13,929 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:05:13,930 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-10-12 00:05:13,930 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:05:14,120 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-12 00:05:14,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 83 transitions, 187 flow [2024-10-12 00:05:14,225 INFO L124 PetriNetUnfolderBase]: 7/80 cut-off events. [2024-10-12 00:05:14,226 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-12 00:05:14,231 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. [2024-10-12 00:05:14,232 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 83 transitions, 187 flow [2024-10-12 00:05:14,236 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 78 transitions, 171 flow [2024-10-12 00:05:14,250 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:05:14,258 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;@6b594f84, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:05:14,259 INFO L334 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2024-10-12 00:05:14,263 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:05:14,264 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-12 00:05:14,264 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:05:14,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:14,265 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-12 00:05:14,265 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-10-12 00:05:14,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:14,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1368666, now seen corresponding path program 1 times [2024-10-12 00:05:14,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:14,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519734084] [2024-10-12 00:05:14,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:14,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:14,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:14,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:14,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519734084] [2024-10-12 00:05:14,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519734084] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:14,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:14,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:05:14,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850042329] [2024-10-12 00:05:14,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:14,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:14,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:14,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:14,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:05:14,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 83 [2024-10-12 00:05:14,703 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) [2024-10-12 00:05:14,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:14,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 83 [2024-10-12 00:05:14,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:16,380 INFO L124 PetriNetUnfolderBase]: 4166/6692 cut-off events. [2024-10-12 00:05:16,381 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2024-10-12 00:05:16,400 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. [2024-10-12 00:05:16,476 INFO L140 encePairwiseOnDemand]: 60/83 looper letters, 52 selfloop transitions, 11 changer transitions 0/81 dead transitions. [2024-10-12 00:05:16,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 81 transitions, 303 flow [2024-10-12 00:05:16,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:05:16,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:05:16,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-10-12 00:05:16,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4789156626506024 [2024-10-12 00:05:16,493 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 171 flow. Second operand 4 states and 159 transitions. [2024-10-12 00:05:16,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 81 transitions, 303 flow [2024-10-12 00:05:16,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 81 transitions, 294 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-12 00:05:16,511 INFO L231 Difference]: Finished difference. Result has 76 places, 81 transitions, 242 flow [2024-10-12 00:05:16,513 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} [2024-10-12 00:05:16,518 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -5 predicate places. [2024-10-12 00:05:16,519 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 81 transitions, 242 flow [2024-10-12 00:05:16,519 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) [2024-10-12 00:05:16,519 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:16,519 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-12 00:05:16,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:05:16,520 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-10-12 00:05:16,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:16,521 INFO L85 PathProgramCache]: Analyzing trace with hash 2120595652, now seen corresponding path program 1 times [2024-10-12 00:05:16,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:16,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527525419] [2024-10-12 00:05:16,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:16,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:16,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:16,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:16,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527525419] [2024-10-12 00:05:16,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527525419] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:16,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714005973] [2024-10-12 00:05:16,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:16,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:16,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:16,711 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:16,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 00:05:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:16,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:05:16,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:16,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:16,924 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:05:16,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714005973] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:16,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:05:16,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-12 00:05:16,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373882856] [2024-10-12 00:05:16,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:16,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:05:16,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:16,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:05:16,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:05:16,962 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 83 [2024-10-12 00:05:16,964 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) [2024-10-12 00:05:16,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:16,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 83 [2024-10-12 00:05:16,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:18,411 INFO L124 PetriNetUnfolderBase]: 4166/6689 cut-off events. [2024-10-12 00:05:18,411 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-10-12 00:05:18,421 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. [2024-10-12 00:05:18,458 INFO L140 encePairwiseOnDemand]: 69/83 looper letters, 41 selfloop transitions, 19 changer transitions 0/78 dead transitions. [2024-10-12 00:05:18,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 78 transitions, 350 flow [2024-10-12 00:05:18,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:05:18,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:05:18,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-10-12 00:05:18,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3795180722891566 [2024-10-12 00:05:18,462 INFO L175 Difference]: Start difference. First operand has 76 places, 81 transitions, 242 flow. Second operand 6 states and 189 transitions. [2024-10-12 00:05:18,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 78 transitions, 350 flow [2024-10-12 00:05:18,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 78 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:05:18,465 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 268 flow [2024-10-12 00:05:18,465 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} [2024-10-12 00:05:18,466 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -3 predicate places. [2024-10-12 00:05:18,466 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 268 flow [2024-10-12 00:05:18,467 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) [2024-10-12 00:05:18,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:18,467 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-12 00:05:18,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 00:05:18,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:18,672 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-10-12 00:05:18,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:18,673 INFO L85 PathProgramCache]: Analyzing trace with hash 2122047894, now seen corresponding path program 1 times [2024-10-12 00:05:18,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:18,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448403352] [2024-10-12 00:05:18,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:18,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:18,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:18,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:18,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448403352] [2024-10-12 00:05:18,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448403352] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:18,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:18,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:05:18,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858128583] [2024-10-12 00:05:18,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:18,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:18,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:18,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:18,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:05:18,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 83 [2024-10-12 00:05:18,791 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) [2024-10-12 00:05:18,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:18,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 83 [2024-10-12 00:05:18,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:20,204 INFO L124 PetriNetUnfolderBase]: 4169/6702 cut-off events. [2024-10-12 00:05:20,204 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-10-12 00:05:20,217 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. [2024-10-12 00:05:20,251 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 62 selfloop transitions, 6 changer transitions 0/87 dead transitions. [2024-10-12 00:05:20,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 87 transitions, 458 flow [2024-10-12 00:05:20,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:05:20,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:05:20,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-10-12 00:05:20,255 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4759036144578313 [2024-10-12 00:05:20,257 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 268 flow. Second operand 4 states and 158 transitions. [2024-10-12 00:05:20,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 87 transitions, 458 flow [2024-10-12 00:05:20,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 87 transitions, 394 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-10-12 00:05:20,262 INFO L231 Difference]: Finished difference. Result has 78 places, 82 transitions, 265 flow [2024-10-12 00:05:20,262 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} [2024-10-12 00:05:20,263 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -3 predicate places. [2024-10-12 00:05:20,263 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 82 transitions, 265 flow [2024-10-12 00:05:20,263 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) [2024-10-12 00:05:20,263 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:20,264 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-12 00:05:20,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 00:05:20,264 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-10-12 00:05:20,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:20,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1313957154, now seen corresponding path program 1 times [2024-10-12 00:05:20,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:20,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136686275] [2024-10-12 00:05:20,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:20,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:20,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:20,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:20,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136686275] [2024-10-12 00:05:20,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136686275] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:20,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070969740] [2024-10-12 00:05:20,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:20,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:20,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:20,368 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:20,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 00:05:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:20,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:05:20,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:20,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:20,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:05:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:20,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070969740] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:05:20,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:05:20,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-12 00:05:20,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538085485] [2024-10-12 00:05:20,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:05:20,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:05:20,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:20,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:05:20,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:05:20,608 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 83 [2024-10-12 00:05:20,609 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) [2024-10-12 00:05:20,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:20,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 83 [2024-10-12 00:05:20,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:21,936 INFO L124 PetriNetUnfolderBase]: 4181/6750 cut-off events. [2024-10-12 00:05:21,937 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-10-12 00:05:21,950 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. [2024-10-12 00:05:21,985 INFO L140 encePairwiseOnDemand]: 69/83 looper letters, 52 selfloop transitions, 42 changer transitions 0/112 dead transitions. [2024-10-12 00:05:21,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 112 transitions, 612 flow [2024-10-12 00:05:21,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:05:21,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:05:21,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2024-10-12 00:05:21,991 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3686746987951807 [2024-10-12 00:05:21,991 INFO L175 Difference]: Start difference. First operand has 78 places, 82 transitions, 265 flow. Second operand 10 states and 306 transitions. [2024-10-12 00:05:21,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 112 transitions, 612 flow [2024-10-12 00:05:21,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 112 transitions, 605 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:05:21,997 INFO L231 Difference]: Finished difference. Result has 89 places, 112 transitions, 555 flow [2024-10-12 00:05:21,998 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} [2024-10-12 00:05:21,999 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 8 predicate places. [2024-10-12 00:05:22,000 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 112 transitions, 555 flow [2024-10-12 00:05:22,000 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) [2024-10-12 00:05:22,001 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:22,001 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:22,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 00:05:22,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:22,206 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-10-12 00:05:22,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:22,207 INFO L85 PathProgramCache]: Analyzing trace with hash -817322298, now seen corresponding path program 1 times [2024-10-12 00:05:22,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:22,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002983550] [2024-10-12 00:05:22,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:22,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:22,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:22,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:22,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002983550] [2024-10-12 00:05:22,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002983550] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:22,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:22,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:05:22,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587207177] [2024-10-12 00:05:22,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:22,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:22,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:22,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:22,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:05:22,337 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 83 [2024-10-12 00:05:22,337 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) [2024-10-12 00:05:22,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:22,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 83 [2024-10-12 00:05:22,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:23,891 INFO L124 PetriNetUnfolderBase]: 4196/6821 cut-off events. [2024-10-12 00:05:23,892 INFO L125 PetriNetUnfolderBase]: For 344/344 co-relation queries the response was YES. [2024-10-12 00:05:23,906 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. [2024-10-12 00:05:23,950 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 114 selfloop transitions, 15 changer transitions 0/150 dead transitions. [2024-10-12 00:05:23,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 150 transitions, 1099 flow [2024-10-12 00:05:23,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:05:23,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:05:23,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 204 transitions. [2024-10-12 00:05:23,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.491566265060241 [2024-10-12 00:05:23,952 INFO L175 Difference]: Start difference. First operand has 89 places, 112 transitions, 555 flow. Second operand 5 states and 204 transitions. [2024-10-12 00:05:23,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 150 transitions, 1099 flow [2024-10-12 00:05:23,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 150 transitions, 1041 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-10-12 00:05:23,960 INFO L231 Difference]: Finished difference. Result has 93 places, 118 transitions, 617 flow [2024-10-12 00:05:23,960 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} [2024-10-12 00:05:23,962 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 12 predicate places. [2024-10-12 00:05:23,963 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 118 transitions, 617 flow [2024-10-12 00:05:23,963 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) [2024-10-12 00:05:23,964 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:23,964 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:23,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 00:05:23,965 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-10-12 00:05:23,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:23,965 INFO L85 PathProgramCache]: Analyzing trace with hash 912089526, now seen corresponding path program 1 times [2024-10-12 00:05:23,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:23,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255372700] [2024-10-12 00:05:23,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:23,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:24,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:24,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255372700] [2024-10-12 00:05:24,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255372700] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:24,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116778] [2024-10-12 00:05:24,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:24,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:24,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:24,114 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:24,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 00:05:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:24,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:05:24,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:24,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:24,298 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:05:24,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116778] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:24,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:05:24,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-12 00:05:24,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637713791] [2024-10-12 00:05:24,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:24,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:05:24,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:24,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:05:24,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:05:24,310 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 83 [2024-10-12 00:05:24,311 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) [2024-10-12 00:05:24,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:24,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 83 [2024-10-12 00:05:24,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:25,305 INFO L124 PetriNetUnfolderBase]: 4196/6819 cut-off events. [2024-10-12 00:05:25,306 INFO L125 PetriNetUnfolderBase]: For 300/300 co-relation queries the response was YES. [2024-10-12 00:05:25,328 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. [2024-10-12 00:05:25,365 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 89 selfloop transitions, 22 changer transitions 0/130 dead transitions. [2024-10-12 00:05:25,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 130 transitions, 932 flow [2024-10-12 00:05:25,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:05:25,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:05:25,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-10-12 00:05:25,368 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41365461847389556 [2024-10-12 00:05:25,368 INFO L175 Difference]: Start difference. First operand has 93 places, 118 transitions, 617 flow. Second operand 6 states and 206 transitions. [2024-10-12 00:05:25,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 130 transitions, 932 flow [2024-10-12 00:05:25,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 130 transitions, 930 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-12 00:05:25,375 INFO L231 Difference]: Finished difference. Result has 97 places, 117 transitions, 655 flow [2024-10-12 00:05:25,375 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} [2024-10-12 00:05:25,376 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 16 predicate places. [2024-10-12 00:05:25,376 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 117 transitions, 655 flow [2024-10-12 00:05:25,377 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) [2024-10-12 00:05:25,377 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:25,377 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-10-12 00:05:25,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 00:05:25,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:25,578 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-10-12 00:05:25,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:25,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1789994421, now seen corresponding path program 1 times [2024-10-12 00:05:25,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:25,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252020623] [2024-10-12 00:05:25,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:25,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:25,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:25,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:25,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252020623] [2024-10-12 00:05:25,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252020623] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:25,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291363053] [2024-10-12 00:05:25,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:25,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:25,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:25,707 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:25,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 00:05:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:25,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:05:25,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:25,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:05:25,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:25,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291363053] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:05:25,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:05:25,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-12 00:05:25,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410548597] [2024-10-12 00:05:25,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:05:25,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:05:25,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:25,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:05:25,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:05:25,956 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 83 [2024-10-12 00:05:25,957 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) [2024-10-12 00:05:25,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:25,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 83 [2024-10-12 00:05:25,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:26,853 INFO L124 PetriNetUnfolderBase]: 4229/6966 cut-off events. [2024-10-12 00:05:26,854 INFO L125 PetriNetUnfolderBase]: For 608/608 co-relation queries the response was YES. [2024-10-12 00:05:26,871 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. [2024-10-12 00:05:26,905 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 136 selfloop transitions, 38 changer transitions 0/193 dead transitions. [2024-10-12 00:05:26,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 193 transitions, 1613 flow [2024-10-12 00:05:26,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:05:26,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:05:26,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 326 transitions. [2024-10-12 00:05:26,908 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3927710843373494 [2024-10-12 00:05:26,908 INFO L175 Difference]: Start difference. First operand has 97 places, 117 transitions, 655 flow. Second operand 10 states and 326 transitions. [2024-10-12 00:05:26,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 193 transitions, 1613 flow [2024-10-12 00:05:26,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 193 transitions, 1473 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-10-12 00:05:26,920 INFO L231 Difference]: Finished difference. Result has 104 places, 141 transitions, 872 flow [2024-10-12 00:05:26,921 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} [2024-10-12 00:05:26,921 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 23 predicate places. [2024-10-12 00:05:26,922 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 141 transitions, 872 flow [2024-10-12 00:05:26,922 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) [2024-10-12 00:05:26,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:26,922 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:26,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 00:05:27,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-12 00:05:27,127 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-10-12 00:05:27,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:27,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1454510550, now seen corresponding path program 1 times [2024-10-12 00:05:27,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:27,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64654895] [2024-10-12 00:05:27,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:27,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:05:27,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:27,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64654895] [2024-10-12 00:05:27,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64654895] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:27,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:27,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:05:27,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899020718] [2024-10-12 00:05:27,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:27,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:27,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:27,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:27,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:05:27,479 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 83 [2024-10-12 00:05:27,479 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) [2024-10-12 00:05:27,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:27,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 83 [2024-10-12 00:05:27,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:28,346 INFO L124 PetriNetUnfolderBase]: 4352/7180 cut-off events. [2024-10-12 00:05:28,346 INFO L125 PetriNetUnfolderBase]: For 639/639 co-relation queries the response was YES. [2024-10-12 00:05:28,369 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. [2024-10-12 00:05:28,396 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 125 selfloop transitions, 8 changer transitions 15/168 dead transitions. [2024-10-12 00:05:28,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 168 transitions, 1295 flow [2024-10-12 00:05:28,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:05:28,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:05:28,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2024-10-12 00:05:28,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5391566265060241 [2024-10-12 00:05:28,398 INFO L175 Difference]: Start difference. First operand has 104 places, 141 transitions, 872 flow. Second operand 4 states and 179 transitions. [2024-10-12 00:05:28,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 168 transitions, 1295 flow [2024-10-12 00:05:28,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 168 transitions, 1269 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-12 00:05:28,406 INFO L231 Difference]: Finished difference. Result has 106 places, 140 transitions, 869 flow [2024-10-12 00:05:28,406 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} [2024-10-12 00:05:28,407 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 25 predicate places. [2024-10-12 00:05:28,407 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 140 transitions, 869 flow [2024-10-12 00:05:28,407 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) [2024-10-12 00:05:28,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:28,408 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-12 00:05:28,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 00:05:28,408 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-10-12 00:05:28,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:28,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1493479732, now seen corresponding path program 2 times [2024-10-12 00:05:28,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:28,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149330738] [2024-10-12 00:05:28,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:28,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:28,589 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:28,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:28,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149330738] [2024-10-12 00:05:28,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149330738] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:28,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987130465] [2024-10-12 00:05:28,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:05:28,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:28,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:28,592 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:28,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 00:05:28,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:05:28,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:05:28,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:05:28,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:28,750 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 00:05:28,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:05:28,785 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 00:05:28,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987130465] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:05:28,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:05:28,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-12 00:05:28,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991070701] [2024-10-12 00:05:28,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:05:28,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 00:05:28,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:28,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 00:05:28,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-12 00:05:28,840 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 83 [2024-10-12 00:05:28,841 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) [2024-10-12 00:05:28,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:28,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 83 [2024-10-12 00:05:28,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:30,209 INFO L124 PetriNetUnfolderBase]: 4241/7016 cut-off events. [2024-10-12 00:05:30,209 INFO L125 PetriNetUnfolderBase]: For 1224/1224 co-relation queries the response was YES. [2024-10-12 00:05:30,228 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. [2024-10-12 00:05:30,249 INFO L140 encePairwiseOnDemand]: 69/83 looper letters, 56 selfloop transitions, 79 changer transitions 0/152 dead transitions. [2024-10-12 00:05:30,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 152 transitions, 1235 flow [2024-10-12 00:05:30,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-12 00:05:30,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-12 00:05:30,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 603 transitions. [2024-10-12 00:05:30,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30271084337349397 [2024-10-12 00:05:30,253 INFO L175 Difference]: Start difference. First operand has 106 places, 140 transitions, 869 flow. Second operand 24 states and 603 transitions. [2024-10-12 00:05:30,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 152 transitions, 1235 flow [2024-10-12 00:05:30,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 152 transitions, 1217 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:05:30,262 INFO L231 Difference]: Finished difference. Result has 127 places, 152 transitions, 1143 flow [2024-10-12 00:05:30,263 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} [2024-10-12 00:05:30,263 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 46 predicate places. [2024-10-12 00:05:30,264 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 152 transitions, 1143 flow [2024-10-12 00:05:30,264 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) [2024-10-12 00:05:30,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:30,264 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:30,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 00:05:30,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:30,469 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-10-12 00:05:30,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:30,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1380416714, now seen corresponding path program 1 times [2024-10-12 00:05:30,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:30,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702851632] [2024-10-12 00:05:30,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:30,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:30,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:05:30,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:30,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702851632] [2024-10-12 00:05:30,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702851632] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:30,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:30,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:05:30,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153654520] [2024-10-12 00:05:30,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:30,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:30,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:30,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:30,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:05:30,865 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 83 [2024-10-12 00:05:30,866 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) [2024-10-12 00:05:30,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:30,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 83 [2024-10-12 00:05:30,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:31,889 INFO L124 PetriNetUnfolderBase]: 4368/7272 cut-off events. [2024-10-12 00:05:31,889 INFO L125 PetriNetUnfolderBase]: For 1597/1597 co-relation queries the response was YES. [2024-10-12 00:05:31,908 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. [2024-10-12 00:05:31,930 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 116 selfloop transitions, 32 changer transitions 18/185 dead transitions. [2024-10-12 00:05:31,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 185 transitions, 1700 flow [2024-10-12 00:05:31,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:05:31,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:05:31,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 208 transitions. [2024-10-12 00:05:31,932 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5012048192771085 [2024-10-12 00:05:31,933 INFO L175 Difference]: Start difference. First operand has 127 places, 152 transitions, 1143 flow. Second operand 5 states and 208 transitions. [2024-10-12 00:05:31,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 185 transitions, 1700 flow [2024-10-12 00:05:31,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 185 transitions, 1486 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-10-12 00:05:31,944 INFO L231 Difference]: Finished difference. Result has 122 places, 162 transitions, 1167 flow [2024-10-12 00:05:31,944 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} [2024-10-12 00:05:31,945 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 41 predicate places. [2024-10-12 00:05:31,945 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 162 transitions, 1167 flow [2024-10-12 00:05:31,945 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) [2024-10-12 00:05:31,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:31,946 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-12 00:05:31,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 00:05:31,946 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-10-12 00:05:31,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:31,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1018921067, now seen corresponding path program 1 times [2024-10-12 00:05:31,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:31,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346264784] [2024-10-12 00:05:31,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:31,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-12 00:05:32,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:32,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346264784] [2024-10-12 00:05:32,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346264784] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:32,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:32,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:05:32,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574682153] [2024-10-12 00:05:32,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:32,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:32,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:32,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:32,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:05:32,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 83 [2024-10-12 00:05:32,095 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) [2024-10-12 00:05:32,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:32,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 83 [2024-10-12 00:05:32,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:33,071 INFO L124 PetriNetUnfolderBase]: 4362/7532 cut-off events. [2024-10-12 00:05:33,072 INFO L125 PetriNetUnfolderBase]: For 2445/2445 co-relation queries the response was YES. [2024-10-12 00:05:33,096 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. [2024-10-12 00:05:33,125 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 131 selfloop transitions, 11 changer transitions 0/161 dead transitions. [2024-10-12 00:05:33,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 161 transitions, 1441 flow [2024-10-12 00:05:33,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:05:33,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:05:33,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-10-12 00:05:33,127 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4939759036144578 [2024-10-12 00:05:33,127 INFO L175 Difference]: Start difference. First operand has 122 places, 162 transitions, 1167 flow. Second operand 4 states and 164 transitions. [2024-10-12 00:05:33,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 161 transitions, 1441 flow [2024-10-12 00:05:33,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 161 transitions, 1427 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-12 00:05:33,137 INFO L231 Difference]: Finished difference. Result has 125 places, 161 transitions, 1169 flow [2024-10-12 00:05:33,138 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} [2024-10-12 00:05:33,138 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 44 predicate places. [2024-10-12 00:05:33,138 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 161 transitions, 1169 flow [2024-10-12 00:05:33,139 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) [2024-10-12 00:05:33,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:33,139 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] [2024-10-12 00:05:33,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 00:05:33,139 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-10-12 00:05:33,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:33,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1485901192, now seen corresponding path program 1 times [2024-10-12 00:05:33,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:33,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375747728] [2024-10-12 00:05:33,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:33,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:34,719 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:05:34,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:34,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375747728] [2024-10-12 00:05:34,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375747728] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:34,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100533891] [2024-10-12 00:05:34,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:34,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:34,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:34,723 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:05:34,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 00:05:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:34,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-12 00:05:34,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:34,953 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 [2024-10-12 00:05:35,102 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 [2024-10-12 00:05:35,110 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 [2024-10-12 00:05:35,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:05:35,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:05:35,838 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 [2024-10-12 00:05:35,846 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 [2024-10-12 00:05:35,852 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 [2024-10-12 00:05:35,859 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 [2024-10-12 00:05:36,733 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:05:36,734 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 [2024-10-12 00:06:29,415 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 [2024-10-12 00:06:29,445 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 [2024-10-12 00:06:30,600 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