./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-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-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:06:08,946 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:06:09,032 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:06:09,038 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:06:09,040 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:06:09,074 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:06:09,075 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:06:09,076 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:06:09,077 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:06:09,078 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:06:09,078 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:06:09,079 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:06:09,079 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:06:09,081 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:06:09,082 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:06:09,082 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:06:09,082 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:06:09,083 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:06:09,083 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:06:09,083 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:06:09,087 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:06:09,087 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:06:09,088 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:06:09,088 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:06:09,088 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:06:09,088 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:06:09,089 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:06:09,089 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:06:09,089 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:06:09,090 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:06:09,090 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:06:09,090 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:06:09,090 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:06:09,091 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:06:09,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:06:09,091 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:06:09,092 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:06:09,092 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:06:09,092 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:06:09,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:06:09,092 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:06:09,094 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:06:09,094 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:06:09,095 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:06:09,095 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 [2024-11-19 14:06:09,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:06:09,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:06:09,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:06:09,387 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:06:09,387 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:06:09,388 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-11-19 14:06:10,838 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:06:11,024 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:06:11,025 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-11-19 14:06:11,033 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b68140fe6/d6fb618b94094ed0b7f8ca4662f5f420/FLAGd947aab2d [2024-11-19 14:06:11,047 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b68140fe6/d6fb618b94094ed0b7f8ca4662f5f420 [2024-11-19 14:06:11,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:06:11,052 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:06:11,053 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:06:11,053 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:06:11,058 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:06:11,059 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:06:11" (1/1) ... [2024-11-19 14:06:11,059 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bed67a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:11, skipping insertion in model container [2024-11-19 14:06:11,059 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:06:11" (1/1) ... [2024-11-19 14:06:11,080 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:06:11,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:06:11,346 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:06:11,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:06:11,409 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:06:11,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:11 WrapperNode [2024-11-19 14:06:11,410 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:06:11,412 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:06:11,412 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:06:11,412 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:06:11,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:11" (1/1) ... [2024-11-19 14:06:11,431 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:11" (1/1) ... [2024-11-19 14:06:11,473 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 23, statements flattened = 332 [2024-11-19 14:06:11,474 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:06:11,474 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:06:11,475 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:06:11,475 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:06:11,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:11" (1/1) ... [2024-11-19 14:06:11,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:11" (1/1) ... [2024-11-19 14:06:11,491 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:11" (1/1) ... [2024-11-19 14:06:11,512 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]. [2024-11-19 14:06:11,513 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:11" (1/1) ... [2024-11-19 14:06:11,513 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:11" (1/1) ... [2024-11-19 14:06:11,521 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:11" (1/1) ... [2024-11-19 14:06:11,526 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:11" (1/1) ... [2024-11-19 14:06:11,533 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:11" (1/1) ... [2024-11-19 14:06:11,535 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:11" (1/1) ... [2024-11-19 14:06:11,541 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:06:11,542 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:06:11,543 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:06:11,543 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:06:11,544 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:11" (1/1) ... [2024-11-19 14:06:11,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:06:11,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:11,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 14:06:11,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 14:06:11,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:06:11,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:06:11,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:06:11,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:06:11,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:06:11,630 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 14:06:11,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 14:06:11,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:06:11,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:06:11,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:06:11,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:06:11,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 14:06:11,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 14:06:11,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:06:11,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:06:11,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:06:11,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:06:11,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:06:11,634 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:06:11,760 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:06:11,763 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:06:12,300 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:06:12,300 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:06:12,750 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:06:12,750 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-19 14:06:12,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:06:12 BoogieIcfgContainer [2024-11-19 14:06:12,751 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:06:12,754 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:06:12,754 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:06:12,759 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:06:12,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:06:11" (1/3) ... [2024-11-19 14:06:12,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3603144d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:06:12, skipping insertion in model container [2024-11-19 14:06:12,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:11" (2/3) ... [2024-11-19 14:06:12,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3603144d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:06:12, skipping insertion in model container [2024-11-19 14:06:12,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:06:12" (3/3) ... [2024-11-19 14:06:12,762 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2024-11-19 14:06:12,778 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:06:12,778 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2024-11-19 14:06:12,778 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:06:12,906 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 14:06:12,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 98 transitions, 217 flow [2024-11-19 14:06:12,987 INFO L124 PetriNetUnfolderBase]: 11/95 cut-off events. [2024-11-19 14:06:12,987 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 14:06:12,993 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. [2024-11-19 14:06:12,993 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 98 transitions, 217 flow [2024-11-19 14:06:12,999 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 93 transitions, 201 flow [2024-11-19 14:06:13,015 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:06:13,023 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;@39dba3d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:06:13,024 INFO L334 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2024-11-19 14:06:13,027 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:06:13,028 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:06:13,028 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:06:13,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:13,029 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:06:13,030 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-19 14:06:13,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:13,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1091473, now seen corresponding path program 1 times [2024-11-19 14:06:13,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:13,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527909305] [2024-11-19 14:06:13,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:13,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:13,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:13,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:13,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527909305] [2024-11-19 14:06:13,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527909305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:13,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:13,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:06:13,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471187970] [2024-11-19 14:06:13,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:13,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:13,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:13,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:13,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:13,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-11-19 14:06:13,399 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) [2024-11-19 14:06:13,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:13,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-11-19 14:06:13,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:15,833 INFO L124 PetriNetUnfolderBase]: 10484/18132 cut-off events. [2024-11-19 14:06:15,833 INFO L125 PetriNetUnfolderBase]: For 593/593 co-relation queries the response was YES. [2024-11-19 14:06:15,875 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. [2024-11-19 14:06:15,992 INFO L140 encePairwiseOnDemand]: 78/98 looper letters, 57 selfloop transitions, 7 changer transitions 0/90 dead transitions. [2024-11-19 14:06:15,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 90 transitions, 323 flow [2024-11-19 14:06:15,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:15,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:16,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 193 transitions. [2024-11-19 14:06:16,006 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4923469387755102 [2024-11-19 14:06:16,009 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 201 flow. Second operand 4 states and 193 transitions. [2024-11-19 14:06:16,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 90 transitions, 323 flow [2024-11-19 14:06:16,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 90 transitions, 314 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 14:06:16,022 INFO L231 Difference]: Finished difference. Result has 87 places, 90 transitions, 234 flow [2024-11-19 14:06:16,024 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} [2024-11-19 14:06:16,029 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -5 predicate places. [2024-11-19 14:06:16,032 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 90 transitions, 234 flow [2024-11-19 14:06:16,033 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) [2024-11-19 14:06:16,033 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:16,033 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 14:06:16,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:06:16,034 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-19 14:06:16,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:16,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1842604543, now seen corresponding path program 1 times [2024-11-19 14:06:16,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:16,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751851938] [2024-11-19 14:06:16,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:16,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:16,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:16,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:16,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751851938] [2024-11-19 14:06:16,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751851938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:16,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317836465] [2024-11-19 14:06:16,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:16,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:16,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:16,200 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:16,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:06:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:16,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:06:16,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:16,368 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:06:16,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317836465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:16,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:06:16,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:06:16,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019068411] [2024-11-19 14:06:16,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:16,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:06:16,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:16,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:06:16,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:06:16,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-11-19 14:06:16,391 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) [2024-11-19 14:06:16,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:16,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-11-19 14:06:16,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:18,378 INFO L124 PetriNetUnfolderBase]: 10484/18130 cut-off events. [2024-11-19 14:06:18,379 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-11-19 14:06:18,428 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. [2024-11-19 14:06:18,515 INFO L140 encePairwiseOnDemand]: 89/98 looper letters, 50 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2024-11-19 14:06:18,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 88 transitions, 350 flow [2024-11-19 14:06:18,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:06:18,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:06:18,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 238 transitions. [2024-11-19 14:06:18,518 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-11-19 14:06:18,518 INFO L175 Difference]: Start difference. First operand has 87 places, 90 transitions, 234 flow. Second operand 6 states and 238 transitions. [2024-11-19 14:06:18,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 88 transitions, 350 flow [2024-11-19 14:06:18,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 88 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:06:18,521 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 250 flow [2024-11-19 14:06:18,521 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} [2024-11-19 14:06:18,522 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -2 predicate places. [2024-11-19 14:06:18,522 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 250 flow [2024-11-19 14:06:18,522 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) [2024-11-19 14:06:18,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:18,523 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:06:18,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 14:06:18,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:18,725 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-19 14:06:18,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:18,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1286164917, now seen corresponding path program 1 times [2024-11-19 14:06:18,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:18,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967812867] [2024-11-19 14:06:18,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:18,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:18,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:18,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:18,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967812867] [2024-11-19 14:06:18,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967812867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:18,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479391348] [2024-11-19 14:06:18,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:18,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:18,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:18,840 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:18,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:06:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:18,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:06:18,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:18,972 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:19,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479391348] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:19,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:19,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:06:19,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039453221] [2024-11-19 14:06:19,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:19,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:06:19,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:19,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:06:19,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:06:19,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-11-19 14:06:19,053 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) [2024-11-19 14:06:19,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:19,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-11-19 14:06:19,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:21,295 INFO L124 PetriNetUnfolderBase]: 10490/18154 cut-off events. [2024-11-19 14:06:21,296 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-11-19 14:06:21,334 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. [2024-11-19 14:06:21,419 INFO L140 encePairwiseOnDemand]: 89/98 looper letters, 55 selfloop transitions, 25 changer transitions 0/106 dead transitions. [2024-11-19 14:06:21,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 106 transitions, 524 flow [2024-11-19 14:06:21,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:06:21,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:06:21,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 376 transitions. [2024-11-19 14:06:21,422 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3836734693877551 [2024-11-19 14:06:21,422 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 250 flow. Second operand 10 states and 376 transitions. [2024-11-19 14:06:21,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 106 transitions, 524 flow [2024-11-19 14:06:21,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 106 transitions, 466 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-19 14:06:21,426 INFO L231 Difference]: Finished difference. Result has 97 places, 106 transitions, 390 flow [2024-11-19 14:06:21,427 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} [2024-11-19 14:06:21,427 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 5 predicate places. [2024-11-19 14:06:21,427 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 106 transitions, 390 flow [2024-11-19 14:06:21,428 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) [2024-11-19 14:06:21,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:21,428 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:21,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 14:06:21,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-19 14:06:21,633 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-19 14:06:21,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:21,634 INFO L85 PathProgramCache]: Analyzing trace with hash -2007898327, now seen corresponding path program 1 times [2024-11-19 14:06:21,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:21,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824361455] [2024-11-19 14:06:21,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:21,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:21,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:21,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:21,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824361455] [2024-11-19 14:06:21,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824361455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:21,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:21,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:21,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301725071] [2024-11-19 14:06:21,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:21,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:21,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:21,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:21,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:21,773 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 98 [2024-11-19 14:06:21,773 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) [2024-11-19 14:06:21,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:21,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 98 [2024-11-19 14:06:21,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:23,068 INFO L124 PetriNetUnfolderBase]: 10490/18170 cut-off events. [2024-11-19 14:06:23,069 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2024-11-19 14:06:23,114 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. [2024-11-19 14:06:23,367 INFO L140 encePairwiseOnDemand]: 93/98 looper letters, 84 selfloop transitions, 4 changer transitions 0/116 dead transitions. [2024-11-19 14:06:23,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 116 transitions, 643 flow [2024-11-19 14:06:23,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:06:23,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:06:23,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 228 transitions. [2024-11-19 14:06:23,369 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46530612244897956 [2024-11-19 14:06:23,369 INFO L175 Difference]: Start difference. First operand has 97 places, 106 transitions, 390 flow. Second operand 5 states and 228 transitions. [2024-11-19 14:06:23,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 116 transitions, 643 flow [2024-11-19 14:06:23,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 116 transitions, 610 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:23,375 INFO L231 Difference]: Finished difference. Result has 101 places, 107 transitions, 396 flow [2024-11-19 14:06:23,377 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} [2024-11-19 14:06:23,378 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 9 predicate places. [2024-11-19 14:06:23,378 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 107 transitions, 396 flow [2024-11-19 14:06:23,378 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) [2024-11-19 14:06:23,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:23,378 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:23,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:06:23,379 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-19 14:06:23,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:23,379 INFO L85 PathProgramCache]: Analyzing trace with hash -329465447, now seen corresponding path program 1 times [2024-11-19 14:06:23,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:23,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734912895] [2024-11-19 14:06:23,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:23,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:23,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:23,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:23,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734912895] [2024-11-19 14:06:23,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734912895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:23,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:23,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 14:06:23,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868516819] [2024-11-19 14:06:23,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:23,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:06:23,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:23,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:06:23,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 14:06:23,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 98 [2024-11-19 14:06:23,564 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) [2024-11-19 14:06:23,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:23,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 98 [2024-11-19 14:06:23,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:26,016 INFO L124 PetriNetUnfolderBase]: 17375/29213 cut-off events. [2024-11-19 14:06:26,017 INFO L125 PetriNetUnfolderBase]: For 362/362 co-relation queries the response was YES. [2024-11-19 14:06:26,101 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. [2024-11-19 14:06:26,220 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 171 selfloop transitions, 12 changer transitions 0/210 dead transitions. [2024-11-19 14:06:26,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 210 transitions, 980 flow [2024-11-19 14:06:26,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:06:26,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:06:26,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 354 transitions. [2024-11-19 14:06:26,222 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2024-11-19 14:06:26,222 INFO L175 Difference]: Start difference. First operand has 101 places, 107 transitions, 396 flow. Second operand 6 states and 354 transitions. [2024-11-19 14:06:26,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 210 transitions, 980 flow [2024-11-19 14:06:26,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 210 transitions, 976 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:26,227 INFO L231 Difference]: Finished difference. Result has 108 places, 111 transitions, 443 flow [2024-11-19 14:06:26,228 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} [2024-11-19 14:06:26,228 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 16 predicate places. [2024-11-19 14:06:26,228 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 111 transitions, 443 flow [2024-11-19 14:06:26,229 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) [2024-11-19 14:06:26,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:26,229 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:26,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:06:26,229 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-19 14:06:26,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:26,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1623494332, now seen corresponding path program 1 times [2024-11-19 14:06:26,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:26,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143290759] [2024-11-19 14:06:26,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:26,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:26,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:26,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:26,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143290759] [2024-11-19 14:06:26,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143290759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:26,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:26,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:26,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937005803] [2024-11-19 14:06:26,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:26,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:26,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:26,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:26,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:26,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 98 [2024-11-19 14:06:26,304 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) [2024-11-19 14:06:26,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:26,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 98 [2024-11-19 14:06:26,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:30,779 INFO L124 PetriNetUnfolderBase]: 31437/51477 cut-off events. [2024-11-19 14:06:30,780 INFO L125 PetriNetUnfolderBase]: For 6035/6451 co-relation queries the response was YES. [2024-11-19 14:06:30,945 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. [2024-11-19 14:06:31,157 INFO L140 encePairwiseOnDemand]: 92/98 looper letters, 156 selfloop transitions, 5 changer transitions 0/188 dead transitions. [2024-11-19 14:06:31,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 188 transitions, 945 flow [2024-11-19 14:06:31,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:31,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:31,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 256 transitions. [2024-11-19 14:06:31,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-11-19 14:06:31,159 INFO L175 Difference]: Start difference. First operand has 108 places, 111 transitions, 443 flow. Second operand 4 states and 256 transitions. [2024-11-19 14:06:31,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 188 transitions, 945 flow [2024-11-19 14:06:31,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 188 transitions, 929 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:31,198 INFO L231 Difference]: Finished difference. Result has 111 places, 115 transitions, 470 flow [2024-11-19 14:06:31,198 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} [2024-11-19 14:06:31,199 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 19 predicate places. [2024-11-19 14:06:31,199 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 115 transitions, 470 flow [2024-11-19 14:06:31,199 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) [2024-11-19 14:06:31,199 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:31,200 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:31,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:06:31,200 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-19 14:06:31,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:31,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1060977136, now seen corresponding path program 1 times [2024-11-19 14:06:31,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:31,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62915141] [2024-11-19 14:06:31,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:31,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:31,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:31,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62915141] [2024-11-19 14:06:31,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62915141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:31,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:31,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:06:31,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300669404] [2024-11-19 14:06:31,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:31,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:31,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:31,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:31,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:31,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 98 [2024-11-19 14:06:31,340 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) [2024-11-19 14:06:31,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:31,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 98 [2024-11-19 14:06:31,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:37,230 INFO L124 PetriNetUnfolderBase]: 44277/74188 cut-off events. [2024-11-19 14:06:37,230 INFO L125 PetriNetUnfolderBase]: For 26446/28463 co-relation queries the response was YES. [2024-11-19 14:06:37,529 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. [2024-11-19 14:06:37,920 INFO L140 encePairwiseOnDemand]: 91/98 looper letters, 128 selfloop transitions, 3 changer transitions 0/160 dead transitions. [2024-11-19 14:06:37,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 160 transitions, 877 flow [2024-11-19 14:06:37,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:37,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 195 transitions. [2024-11-19 14:06:37,921 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6632653061224489 [2024-11-19 14:06:37,922 INFO L175 Difference]: Start difference. First operand has 111 places, 115 transitions, 470 flow. Second operand 3 states and 195 transitions. [2024-11-19 14:06:37,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 160 transitions, 877 flow [2024-11-19 14:06:37,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 160 transitions, 871 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:37,950 INFO L231 Difference]: Finished difference. Result has 113 places, 117 transitions, 492 flow [2024-11-19 14:06:37,950 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} [2024-11-19 14:06:37,951 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 21 predicate places. [2024-11-19 14:06:37,951 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 117 transitions, 492 flow [2024-11-19 14:06:37,951 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) [2024-11-19 14:06:37,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:37,951 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:37,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 14:06:37,952 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-19 14:06:37,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:37,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1060977132, now seen corresponding path program 1 times [2024-11-19 14:06:37,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:37,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48989895] [2024-11-19 14:06:37,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:37,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:38,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:38,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:38,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48989895] [2024-11-19 14:06:38,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48989895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:38,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527583538] [2024-11-19 14:06:38,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:38,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:38,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:38,100 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:38,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:06:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:38,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 14:06:38,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:38,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:38,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:38,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:38,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527583538] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:38,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:38,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-19 14:06:38,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360160320] [2024-11-19 14:06:38,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:38,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 14:06:38,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:38,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 14:06:38,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-19 14:06:38,456 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-11-19 14:06:38,457 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) [2024-11-19 14:06:38,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:38,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-11-19 14:06:38,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:46,550 INFO L124 PetriNetUnfolderBase]: 54138/91002 cut-off events. [2024-11-19 14:06:46,551 INFO L125 PetriNetUnfolderBase]: For 32550/34026 co-relation queries the response was YES. [2024-11-19 14:06:46,934 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. [2024-11-19 14:06:47,276 INFO L140 encePairwiseOnDemand]: 88/98 looper letters, 150 selfloop transitions, 41 changer transitions 0/218 dead transitions. [2024-11-19 14:06:47,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 218 transitions, 1297 flow [2024-11-19 14:06:47,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 14:06:47,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 14:06:47,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 516 transitions. [2024-11-19 14:06:47,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4050235478806907 [2024-11-19 14:06:47,279 INFO L175 Difference]: Start difference. First operand has 113 places, 117 transitions, 492 flow. Second operand 13 states and 516 transitions. [2024-11-19 14:06:47,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 218 transitions, 1297 flow [2024-11-19 14:06:47,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 218 transitions, 1292 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:47,356 INFO L231 Difference]: Finished difference. Result has 128 places, 137 transitions, 755 flow [2024-11-19 14:06:47,356 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} [2024-11-19 14:06:47,357 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 36 predicate places. [2024-11-19 14:06:47,357 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 137 transitions, 755 flow [2024-11-19 14:06:47,358 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) [2024-11-19 14:06:47,358 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:47,358 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:47,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 14:06:47,558 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 [2024-11-19 14:06:47,559 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-11-19 14:06:47,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:47,560 INFO L85 PathProgramCache]: Analyzing trace with hash -377384081, now seen corresponding path program 1 times [2024-11-19 14:06:47,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:47,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330697699] [2024-11-19 14:06:47,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:47,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:47,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:47,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:47,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330697699] [2024-11-19 14:06:47,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330697699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:47,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906667342] [2024-11-19 14:06:47,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:47,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:47,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:47,779 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:47,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:06:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:47,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 14:06:47,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:48,022 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 [2024-11-19 14:06:48,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:48,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:48,082 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 [2024-11-19 14:06:48,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:48,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906667342] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:48,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:48,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-19 14:06:48,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483951101] [2024-11-19 14:06:48,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:48,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 14:06:48,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:48,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 14:06:48,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-19 14:06:48,285 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 98 [2024-11-19 14:06:48,287 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) [2024-11-19 14:06:48,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:48,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 98 [2024-11-19 14:06:48,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand