./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.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:41:25,673 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:41:25,735 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:41:25,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:41:25,740 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:41:25,760 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:41:25,761 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:41:25,761 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:41:25,762 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:41:25,763 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:41:25,764 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:41:25,764 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:41:25,764 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:41:25,765 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:41:25,766 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:41:25,766 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:41:25,766 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:41:25,767 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:41:25,767 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:41:25,767 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:41:25,767 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:41:25,770 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:41:25,770 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:41:25,770 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:41:25,770 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:41:25,770 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:41:25,771 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:41:25,771 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:41:25,771 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:41:25,771 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:41:25,771 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:41:25,772 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:41:25,772 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:41:25,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:41:25,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:41:25,772 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:41:25,772 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:41:25,772 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:41:25,773 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:41:25,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:41:25,773 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:41:25,773 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:41:25,774 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:41:25,774 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:41:25,774 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 [2024-10-24 23:41:25,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:41:25,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:41:25,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:41:25,993 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:41:25,994 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:41:25,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-10-24 23:41:27,197 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:41:27,347 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:41:27,348 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-10-24 23:41:27,354 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3926b784/7bbd75521da442078dc5618a31a46d5a/FLAG8082bb725 [2024-10-24 23:41:27,748 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3926b784/7bbd75521da442078dc5618a31a46d5a [2024-10-24 23:41:27,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:41:27,751 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:41:27,752 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:41:27,752 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:41:27,761 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:41:27,761 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:41:27" (1/1) ... [2024-10-24 23:41:27,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155a8e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:27, skipping insertion in model container [2024-10-24 23:41:27,762 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:41:27" (1/1) ... [2024-10-24 23:41:27,777 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:41:27,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:41:27,946 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:41:27,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:41:27,979 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:41:27,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:27 WrapperNode [2024-10-24 23:41:27,979 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:41:27,980 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:41:27,980 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:41:27,981 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:41:27,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:27" (1/1) ... [2024-10-24 23:41:27,992 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:27" (1/1) ... [2024-10-24 23:41:28,013 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 23, statements flattened = 332 [2024-10-24 23:41:28,013 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:41:28,014 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:41:28,014 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:41:28,014 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:41:28,027 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:27" (1/1) ... [2024-10-24 23:41:28,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:27" (1/1) ... [2024-10-24 23:41:28,030 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:27" (1/1) ... [2024-10-24 23:41:28,045 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-24 23:41:28,045 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:27" (1/1) ... [2024-10-24 23:41:28,046 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:27" (1/1) ... [2024-10-24 23:41:28,077 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:27" (1/1) ... [2024-10-24 23:41:28,081 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:27" (1/1) ... [2024-10-24 23:41:28,086 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:27" (1/1) ... [2024-10-24 23:41:28,088 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:27" (1/1) ... [2024-10-24 23:41:28,098 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:41:28,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:41:28,111 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:41:28,111 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:41:28,111 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:27" (1/1) ... [2024-10-24 23:41:28,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:41:28,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:28,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 23:41:28,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 23:41:28,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:41:28,200 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 23:41:28,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 23:41:28,200 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 23:41:28,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 23:41:28,200 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 23:41:28,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 23:41:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:41:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 23:41:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 23:41:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 23:41:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 23:41:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 23:41:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 23:41:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:41:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:41:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 23:41:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 23:41:28,204 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:41:28,321 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:41:28,323 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:41:28,750 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:41:28,751 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:41:29,088 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:41:29,088 INFO L314 CfgBuilder]: Removed 8 assume(true) statements. [2024-10-24 23:41:29,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:41:29 BoogieIcfgContainer [2024-10-24 23:41:29,089 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:41:29,090 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:41:29,090 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:41:29,093 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:41:29,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:41:27" (1/3) ... [2024-10-24 23:41:29,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21522cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:41:29, skipping insertion in model container [2024-10-24 23:41:29,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:27" (2/3) ... [2024-10-24 23:41:29,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21522cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:41:29, skipping insertion in model container [2024-10-24 23:41:29,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:41:29" (3/3) ... [2024-10-24 23:41:29,096 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2024-10-24 23:41:29,108 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:41:29,108 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2024-10-24 23:41:29,108 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:41:29,185 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 23:41:29,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 98 transitions, 217 flow [2024-10-24 23:41:29,249 INFO L124 PetriNetUnfolderBase]: 11/95 cut-off events. [2024-10-24 23:41:29,249 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 23:41:29,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 11/95 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 376 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2024-10-24 23:41:29,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 98 transitions, 217 flow [2024-10-24 23:41:29,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 93 transitions, 201 flow [2024-10-24 23:41:29,265 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:41:29,270 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;@157873ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:41:29,271 INFO L334 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2024-10-24 23:41:29,273 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:41:29,273 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-24 23:41:29,273 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:41:29,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:29,274 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 23:41:29,275 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-24 23:41:29,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:29,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1091473, now seen corresponding path program 1 times [2024-10-24 23:41:29,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:29,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934227539] [2024-10-24 23:41:29,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:29,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:29,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:29,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:29,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934227539] [2024-10-24 23:41:29,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934227539] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:29,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:29,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:41:29,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101593719] [2024-10-24 23:41:29,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:29,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:41:29,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:29,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:41:29,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:41:29,556 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-10-24 23:41:29,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2024-10-24 23:41:29,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:29,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-10-24 23:41:29,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:31,202 INFO L124 PetriNetUnfolderBase]: 10484/18132 cut-off events. [2024-10-24 23:41:31,203 INFO L125 PetriNetUnfolderBase]: For 593/593 co-relation queries the response was YES. [2024-10-24 23:41:31,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33028 conditions, 18132 events. 10484/18132 cut-off events. For 593/593 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 148660 event pairs, 8602 based on Foata normal form. 941/12136 useless extension candidates. Maximal degree in co-relation 31779. Up to 14417 conditions per place. [2024-10-24 23:41:31,307 INFO L140 encePairwiseOnDemand]: 78/98 looper letters, 57 selfloop transitions, 7 changer transitions 0/90 dead transitions. [2024-10-24 23:41:31,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 90 transitions, 323 flow [2024-10-24 23:41:31,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:41:31,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:41:31,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 193 transitions. [2024-10-24 23:41:31,318 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4923469387755102 [2024-10-24 23:41:31,320 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 201 flow. Second operand 4 states and 193 transitions. [2024-10-24 23:41:31,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 90 transitions, 323 flow [2024-10-24 23:41:31,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 90 transitions, 314 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 23:41:31,330 INFO L231 Difference]: Finished difference. Result has 87 places, 90 transitions, 234 flow [2024-10-24 23:41:31,331 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=87, PETRI_TRANSITIONS=90} [2024-10-24 23:41:31,334 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -5 predicate places. [2024-10-24 23:41:31,335 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 90 transitions, 234 flow [2024-10-24 23:41:31,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2024-10-24 23:41:31,336 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:31,336 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-24 23:41:31,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:41:31,336 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-24 23:41:31,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:31,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1842604543, now seen corresponding path program 1 times [2024-10-24 23:41:31,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:31,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558302048] [2024-10-24 23:41:31,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:31,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:31,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:31,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:31,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558302048] [2024-10-24 23:41:31,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558302048] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:31,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095196513] [2024-10-24 23:41:31,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:31,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:31,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:31,440 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:41:31,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:41:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:31,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:41:31,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:31,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:31,567 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:41:31,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095196513] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:31,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:41:31,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-24 23:41:31,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388755030] [2024-10-24 23:41:31,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:31,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:41:31,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:31,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:41:31,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:41:31,584 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-10-24 23:41:31,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 90 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 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) [2024-10-24 23:41:31,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:31,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-10-24 23:41:31,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:33,025 INFO L124 PetriNetUnfolderBase]: 10484/18130 cut-off events. [2024-10-24 23:41:33,025 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-10-24 23:41:33,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32877 conditions, 18130 events. 10484/18130 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 148872 event pairs, 8602 based on Foata normal form. 2/11198 useless extension candidates. Maximal degree in co-relation 32827. Up to 14407 conditions per place. [2024-10-24 23:41:33,167 INFO L140 encePairwiseOnDemand]: 89/98 looper letters, 50 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2024-10-24 23:41:33,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 88 transitions, 350 flow [2024-10-24 23:41:33,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:41:33,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:41:33,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 238 transitions. [2024-10-24 23:41:33,170 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-10-24 23:41:33,170 INFO L175 Difference]: Start difference. First operand has 87 places, 90 transitions, 234 flow. Second operand 6 states and 238 transitions. [2024-10-24 23:41:33,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 88 transitions, 350 flow [2024-10-24 23:41:33,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 88 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:41:33,175 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 250 flow [2024-10-24 23:41:33,175 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2024-10-24 23:41:33,176 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -2 predicate places. [2024-10-24 23:41:33,176 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 250 flow [2024-10-24 23:41:33,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 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) [2024-10-24 23:41:33,176 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:33,176 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-24 23:41:33,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 23:41:33,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:33,377 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-24 23:41:33,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:33,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1286164917, now seen corresponding path program 1 times [2024-10-24 23:41:33,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:33,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828631384] [2024-10-24 23:41:33,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:33,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:33,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:33,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:33,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828631384] [2024-10-24 23:41:33,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828631384] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:33,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838858983] [2024-10-24 23:41:33,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:33,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:33,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:33,485 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:41:33,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:41:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:33,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:41:33,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:33,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:33,585 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:41:33,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:33,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838858983] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:41:33,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:41:33,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-24 23:41:33,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186546581] [2024-10-24 23:41:33,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:41:33,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:41:33,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:33,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:41:33,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:41:33,643 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-10-24 23:41:33,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 250 flow. Second operand has 12 states, 12 states have (on average 30.083333333333332) internal successors, (361), 12 states have internal predecessors, (361), 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) [2024-10-24 23:41:33,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:33,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-10-24 23:41:33,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:35,025 INFO L124 PetriNetUnfolderBase]: 10490/18154 cut-off events. [2024-10-24 23:41:35,025 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-10-24 23:41:35,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32971 conditions, 18154 events. 10490/18154 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 149062 event pairs, 8602 based on Foata normal form. 6/11225 useless extension candidates. Maximal degree in co-relation 32829. Up to 14418 conditions per place. [2024-10-24 23:41:35,134 INFO L140 encePairwiseOnDemand]: 89/98 looper letters, 55 selfloop transitions, 25 changer transitions 0/106 dead transitions. [2024-10-24 23:41:35,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 106 transitions, 524 flow [2024-10-24 23:41:35,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:41:35,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:41:35,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 376 transitions. [2024-10-24 23:41:35,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3836734693877551 [2024-10-24 23:41:35,137 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 250 flow. Second operand 10 states and 376 transitions. [2024-10-24 23:41:35,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 106 transitions, 524 flow [2024-10-24 23:41:35,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 106 transitions, 466 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-24 23:41:35,140 INFO L231 Difference]: Finished difference. Result has 97 places, 106 transitions, 390 flow [2024-10-24 23:41:35,140 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=390, PETRI_PLACES=97, PETRI_TRANSITIONS=106} [2024-10-24 23:41:35,141 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 5 predicate places. [2024-10-24 23:41:35,141 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 106 transitions, 390 flow [2024-10-24 23:41:35,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 30.083333333333332) internal successors, (361), 12 states have internal predecessors, (361), 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) [2024-10-24 23:41:35,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:35,142 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:35,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 23:41:35,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-24 23:41:35,344 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-24 23:41:35,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:35,344 INFO L85 PathProgramCache]: Analyzing trace with hash -2007898327, now seen corresponding path program 1 times [2024-10-24 23:41:35,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:35,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521259442] [2024-10-24 23:41:35,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:35,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:35,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:35,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521259442] [2024-10-24 23:41:35,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521259442] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:35,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:35,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:41:35,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480374345] [2024-10-24 23:41:35,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:35,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:41:35,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:35,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:41:35,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:41:35,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 98 [2024-10-24 23:41:35,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 106 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:35,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:35,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 98 [2024-10-24 23:41:35,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:36,795 INFO L124 PetriNetUnfolderBase]: 10490/18170 cut-off events. [2024-10-24 23:41:36,795 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2024-10-24 23:41:36,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33040 conditions, 18170 events. 10490/18170 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 149066 event pairs, 8602 based on Foata normal form. 4/11241 useless extension candidates. Maximal degree in co-relation 32947. Up to 14433 conditions per place. [2024-10-24 23:41:36,926 INFO L140 encePairwiseOnDemand]: 93/98 looper letters, 84 selfloop transitions, 4 changer transitions 0/116 dead transitions. [2024-10-24 23:41:36,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 116 transitions, 643 flow [2024-10-24 23:41:36,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:41:36,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:41:36,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 228 transitions. [2024-10-24 23:41:36,931 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46530612244897956 [2024-10-24 23:41:36,931 INFO L175 Difference]: Start difference. First operand has 97 places, 106 transitions, 390 flow. Second operand 5 states and 228 transitions. [2024-10-24 23:41:36,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 116 transitions, 643 flow [2024-10-24 23:41:36,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 116 transitions, 610 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-24 23:41:36,936 INFO L231 Difference]: Finished difference. Result has 101 places, 107 transitions, 396 flow [2024-10-24 23:41:36,936 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=396, PETRI_PLACES=101, PETRI_TRANSITIONS=107} [2024-10-24 23:41:36,937 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 9 predicate places. [2024-10-24 23:41:36,938 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 107 transitions, 396 flow [2024-10-24 23:41:36,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:36,938 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:36,938 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:36,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 23:41:36,938 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-24 23:41:36,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:36,939 INFO L85 PathProgramCache]: Analyzing trace with hash -329465447, now seen corresponding path program 1 times [2024-10-24 23:41:36,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:36,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261643613] [2024-10-24 23:41:36,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:36,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:37,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:37,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:37,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261643613] [2024-10-24 23:41:37,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261643613] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:37,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:37,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 23:41:37,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235585766] [2024-10-24 23:41:37,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:37,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:41:37,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:37,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:41:37,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 23:41:37,095 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 98 [2024-10-24 23:41:37,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 107 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 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) [2024-10-24 23:41:37,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:37,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 98 [2024-10-24 23:41:37,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:39,090 INFO L124 PetriNetUnfolderBase]: 17375/29213 cut-off events. [2024-10-24 23:41:39,090 INFO L125 PetriNetUnfolderBase]: For 362/362 co-relation queries the response was YES. [2024-10-24 23:41:39,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53835 conditions, 29213 events. 17375/29213 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 1467. Compared 241275 event pairs, 12164 based on Foata normal form. 0/18959 useless extension candidates. Maximal degree in co-relation 53750. Up to 15572 conditions per place. [2024-10-24 23:41:39,275 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 171 selfloop transitions, 12 changer transitions 0/210 dead transitions. [2024-10-24 23:41:39,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 210 transitions, 980 flow [2024-10-24 23:41:39,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:41:39,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:41:39,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 354 transitions. [2024-10-24 23:41:39,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2024-10-24 23:41:39,277 INFO L175 Difference]: Start difference. First operand has 101 places, 107 transitions, 396 flow. Second operand 6 states and 354 transitions. [2024-10-24 23:41:39,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 210 transitions, 980 flow [2024-10-24 23:41:39,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 210 transitions, 976 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:39,283 INFO L231 Difference]: Finished difference. Result has 108 places, 111 transitions, 443 flow [2024-10-24 23:41:39,283 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=443, PETRI_PLACES=108, PETRI_TRANSITIONS=111} [2024-10-24 23:41:39,284 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 16 predicate places. [2024-10-24 23:41:39,285 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 111 transitions, 443 flow [2024-10-24 23:41:39,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 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) [2024-10-24 23:41:39,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:39,285 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:39,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 23:41:39,286 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-24 23:41:39,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:39,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1623494332, now seen corresponding path program 1 times [2024-10-24 23:41:39,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:39,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627288993] [2024-10-24 23:41:39,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:39,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:39,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:39,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:39,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627288993] [2024-10-24 23:41:39,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627288993] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:39,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:39,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:41:39,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38094548] [2024-10-24 23:41:39,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:39,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:41:39,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:39,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:41:39,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:41:39,343 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 98 [2024-10-24 23:41:39,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 111 transitions, 443 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2024-10-24 23:41:39,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:39,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 98 [2024-10-24 23:41:39,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:44,059 INFO L124 PetriNetUnfolderBase]: 31437/51477 cut-off events. [2024-10-24 23:41:44,060 INFO L125 PetriNetUnfolderBase]: For 6035/6451 co-relation queries the response was YES. [2024-10-24 23:41:44,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102654 conditions, 51477 events. 31437/51477 cut-off events. For 6035/6451 co-relation queries the response was YES. Maximal size of possible extension queue 1938. Compared 430220 event pairs, 17008 based on Foata normal form. 1044/35531 useless extension candidates. Maximal degree in co-relation 102557. Up to 26896 conditions per place. [2024-10-24 23:41:44,352 INFO L140 encePairwiseOnDemand]: 92/98 looper letters, 156 selfloop transitions, 5 changer transitions 0/188 dead transitions. [2024-10-24 23:41:44,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 188 transitions, 945 flow [2024-10-24 23:41:44,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:41:44,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:41:44,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 256 transitions. [2024-10-24 23:41:44,353 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-10-24 23:41:44,353 INFO L175 Difference]: Start difference. First operand has 108 places, 111 transitions, 443 flow. Second operand 4 states and 256 transitions. [2024-10-24 23:41:44,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 188 transitions, 945 flow [2024-10-24 23:41:44,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 188 transitions, 929 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:41:44,376 INFO L231 Difference]: Finished difference. Result has 111 places, 115 transitions, 470 flow [2024-10-24 23:41:44,376 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=470, PETRI_PLACES=111, PETRI_TRANSITIONS=115} [2024-10-24 23:41:44,378 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 19 predicate places. [2024-10-24 23:41:44,378 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 115 transitions, 470 flow [2024-10-24 23:41:44,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2024-10-24 23:41:44,379 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:44,379 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:44,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 23:41:44,379 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-24 23:41:44,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:44,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1060977136, now seen corresponding path program 1 times [2024-10-24 23:41:44,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:44,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149715350] [2024-10-24 23:41:44,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:44,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:44,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:44,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:44,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149715350] [2024-10-24 23:41:44,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149715350] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:44,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:44,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:41:44,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566843391] [2024-10-24 23:41:44,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:44,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:41:44,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:44,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:41:44,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:41:44,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 98 [2024-10-24 23:41:44,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 115 transitions, 470 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-10-24 23:41:44,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:44,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 98 [2024-10-24 23:41:44,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:49,733 INFO L124 PetriNetUnfolderBase]: 44277/74188 cut-off events. [2024-10-24 23:41:49,733 INFO L125 PetriNetUnfolderBase]: For 26446/28463 co-relation queries the response was YES. [2024-10-24 23:41:49,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156664 conditions, 74188 events. 44277/74188 cut-off events. For 26446/28463 co-relation queries the response was YES. Maximal size of possible extension queue 2602. Compared 668413 event pairs, 13958 based on Foata normal form. 937/51487 useless extension candidates. Maximal degree in co-relation 156566. Up to 39187 conditions per place. [2024-10-24 23:41:50,155 INFO L140 encePairwiseOnDemand]: 91/98 looper letters, 128 selfloop transitions, 3 changer transitions 0/160 dead transitions. [2024-10-24 23:41:50,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 160 transitions, 877 flow [2024-10-24 23:41:50,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:41:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:41:50,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 195 transitions. [2024-10-24 23:41:50,156 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6632653061224489 [2024-10-24 23:41:50,156 INFO L175 Difference]: Start difference. First operand has 111 places, 115 transitions, 470 flow. Second operand 3 states and 195 transitions. [2024-10-24 23:41:50,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 160 transitions, 877 flow [2024-10-24 23:41:50,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 160 transitions, 871 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:50,177 INFO L231 Difference]: Finished difference. Result has 113 places, 117 transitions, 492 flow [2024-10-24 23:41:50,177 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=113, PETRI_TRANSITIONS=117} [2024-10-24 23:41:50,177 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 21 predicate places. [2024-10-24 23:41:50,178 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 117 transitions, 492 flow [2024-10-24 23:41:50,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-10-24 23:41:50,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:50,178 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:50,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 23:41:50,178 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-24 23:41:50,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:50,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1060977132, now seen corresponding path program 1 times [2024-10-24 23:41:50,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:50,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689725275] [2024-10-24 23:41:50,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:50,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:50,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:50,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:50,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689725275] [2024-10-24 23:41:50,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689725275] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:50,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032945324] [2024-10-24 23:41:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:50,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:50,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:50,306 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:41:50,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 23:41:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:50,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 23:41:50,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:50,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:50,455 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:41:50,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:50,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032945324] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:41:50,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:41:50,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-10-24 23:41:50,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058175926] [2024-10-24 23:41:50,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:41:50,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-24 23:41:50,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:50,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-24 23:41:50,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-10-24 23:41:50,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-10-24 23:41:50,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 117 transitions, 492 flow. Second operand has 17 states, 17 states have (on average 30.647058823529413) internal successors, (521), 17 states have internal predecessors, (521), 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) [2024-10-24 23:41:50,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:50,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-10-24 23:41:50,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:57,739 INFO L124 PetriNetUnfolderBase]: 54138/91002 cut-off events. [2024-10-24 23:41:57,739 INFO L125 PetriNetUnfolderBase]: For 32550/34026 co-relation queries the response was YES. [2024-10-24 23:41:58,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200359 conditions, 91002 events. 54138/91002 cut-off events. For 32550/34026 co-relation queries the response was YES. Maximal size of possible extension queue 3045. Compared 839518 event pairs, 39554 based on Foata normal form. 1188/68022 useless extension candidates. Maximal degree in co-relation 200227. Up to 60456 conditions per place. [2024-10-24 23:41:58,341 INFO L140 encePairwiseOnDemand]: 88/98 looper letters, 150 selfloop transitions, 41 changer transitions 0/218 dead transitions. [2024-10-24 23:41:58,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 218 transitions, 1297 flow [2024-10-24 23:41:58,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 23:41:58,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-24 23:41:58,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 516 transitions. [2024-10-24 23:41:58,343 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4050235478806907 [2024-10-24 23:41:58,343 INFO L175 Difference]: Start difference. First operand has 113 places, 117 transitions, 492 flow. Second operand 13 states and 516 transitions. [2024-10-24 23:41:58,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 218 transitions, 1297 flow [2024-10-24 23:41:58,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 218 transitions, 1292 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:58,386 INFO L231 Difference]: Finished difference. Result has 128 places, 137 transitions, 755 flow [2024-10-24 23:41:58,387 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=755, PETRI_PLACES=128, PETRI_TRANSITIONS=137} [2024-10-24 23:41:58,387 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 36 predicate places. [2024-10-24 23:41:58,387 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 137 transitions, 755 flow [2024-10-24 23:41:58,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 30.647058823529413) internal successors, (521), 17 states have internal predecessors, (521), 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) [2024-10-24 23:41:58,388 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:58,388 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:58,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 23:41:58,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:58,589 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-24 23:41:58,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:58,589 INFO L85 PathProgramCache]: Analyzing trace with hash -377384081, now seen corresponding path program 1 times [2024-10-24 23:41:58,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:58,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212512426] [2024-10-24 23:41:58,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:58,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:58,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:58,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:58,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212512426] [2024-10-24 23:41:58,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212512426] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:58,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438561388] [2024-10-24 23:41:58,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:58,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:58,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:58,732 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:41:58,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 23:41:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:58,812 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 23:41:58,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:58,899 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 23 treesize of output 7 [2024-10-24 23:41:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:58,910 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:41:58,942 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 25 treesize of output 9 [2024-10-24 23:41:58,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:58,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438561388] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:41:58,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:41:58,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-10-24 23:41:58,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879759567] [2024-10-24 23:41:58,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:41:58,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-24 23:41:58,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:58,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-24 23:41:58,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-10-24 23:41:59,075 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 98 [2024-10-24 23:41:59,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 137 transitions, 755 flow. Second operand has 18 states, 18 states have (on average 29.5) internal successors, (531), 18 states have internal predecessors, (531), 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) [2024-10-24 23:41:59,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:59,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 98 [2024-10-24 23:41:59,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand