./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-min-max-inc-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 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-min-max-inc-dec.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 47fde0ba5912e0415b0c299af0f3ae7b3e6a5b956bf726bb77299079d74126b4 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:03:08,357 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:03:08,438 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-15 00:03:08,443 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:03:08,444 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:03:08,485 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:03:08,486 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:03:08,487 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:03:08,488 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:03:08,488 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:03:08,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 00:03:08,489 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 00:03:08,490 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:03:08,492 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:03:08,492 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:03:08,492 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:03:08,493 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 00:03:08,493 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 00:03:08,493 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:03:08,493 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 00:03:08,493 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:03:08,497 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 00:03:08,498 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 00:03:08,498 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 00:03:08,498 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:03:08,498 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-15 00:03:08,498 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:03:08,499 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 00:03:08,499 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:03:08,499 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:03:08,499 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:03:08,499 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:03:08,500 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 00:03:08,500 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 00:03:08,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:03:08,500 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:03:08,500 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 00:03:08,501 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 00:03:08,501 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:03:08,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 00:03:08,503 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 00:03:08,503 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 00:03:08,503 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 00:03:08,503 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 00:03:08,504 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47fde0ba5912e0415b0c299af0f3ae7b3e6a5b956bf726bb77299079d74126b4 [2024-10-15 00:03:08,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:03:08,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:03:08,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:03:08,797 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:03:08,797 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:03:08,799 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2024-10-15 00:03:10,206 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:03:10,411 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:03:10,411 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2024-10-15 00:03:10,419 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f0b1145f/a0d7fa33aa264b3fbd7c86ffff04078b/FLAG78648bc38 [2024-10-15 00:03:10,791 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f0b1145f/a0d7fa33aa264b3fbd7c86ffff04078b [2024-10-15 00:03:10,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:03:10,795 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:03:10,797 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:03:10,797 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:03:10,802 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:03:10,803 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:03:10" (1/1) ... [2024-10-15 00:03:10,803 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@abc05ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:10, skipping insertion in model container [2024-10-15 00:03:10,804 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:03:10" (1/1) ... [2024-10-15 00:03:10,826 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:03:11,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:03:11,035 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:03:11,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:03:11,134 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:03:11,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11 WrapperNode [2024-10-15 00:03:11,135 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:03:11,137 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:03:11,139 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:03:11,139 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:03:11,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,155 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,185 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 162 [2024-10-15 00:03:11,189 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:03:11,190 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:03:11,191 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:03:11,191 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:03:11,203 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,214 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,242 INFO L175 MemorySlicer]: Split 15 memory accesses to 2 slices as follows [2, 13]. 87 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-15 00:03:11,243 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,243 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,254 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,261 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,262 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,264 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,273 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:03:11,274 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:03:11,274 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:03:11,274 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:03:11,275 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:03:11,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:11,306 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) [2024-10-15 00:03:11,308 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 [2024-10-15 00:03:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 00:03:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-15 00:03:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-15 00:03:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-15 00:03:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-15 00:03:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-15 00:03:11,346 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-15 00:03:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-15 00:03:11,346 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-15 00:03:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-15 00:03:11,348 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-15 00:03:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-15 00:03:11,348 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-15 00:03:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 00:03:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-15 00:03:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-10-15 00:03:11,349 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-10-15 00:03:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-15 00:03:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-15 00:03:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-15 00:03:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:03:11,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:03:11,352 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-15 00:03:11,462 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:03:11,463 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:03:11,822 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-15 00:03:11,823 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:03:12,063 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:03:12,063 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-15 00:03:12,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:03:12 BoogieIcfgContainer [2024-10-15 00:03:12,064 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:03:12,066 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 00:03:12,066 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 00:03:12,069 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 00:03:12,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:03:10" (1/3) ... [2024-10-15 00:03:12,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4900f57e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:03:12, skipping insertion in model container [2024-10-15 00:03:12,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (2/3) ... [2024-10-15 00:03:12,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4900f57e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:03:12, skipping insertion in model container [2024-10-15 00:03:12,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:03:12" (3/3) ... [2024-10-15 00:03:12,073 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2024-10-15 00:03:12,090 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 00:03:12,090 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-15 00:03:12,091 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-15 00:03:12,194 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-10-15 00:03:12,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 79 transitions, 193 flow [2024-10-15 00:03:12,277 INFO L124 PetriNetUnfolderBase]: 5/74 cut-off events. [2024-10-15 00:03:12,278 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-15 00:03:12,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 74 events. 5/74 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 235 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-10-15 00:03:12,283 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 79 transitions, 193 flow [2024-10-15 00:03:12,287 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 72 transitions, 171 flow [2024-10-15 00:03:12,297 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 00:03:12,304 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;@613650c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 00:03:12,305 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2024-10-15 00:03:12,308 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-15 00:03:12,309 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-15 00:03:12,309 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-15 00:03:12,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:12,310 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-15 00:03:12,310 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-15 00:03:12,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:12,316 INFO L85 PathProgramCache]: Analyzing trace with hash 625751, now seen corresponding path program 1 times [2024-10-15 00:03:12,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:12,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437602089] [2024-10-15 00:03:12,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:12,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:12,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:12,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:12,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437602089] [2024-10-15 00:03:12,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437602089] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:12,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:12,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:03:12,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861177393] [2024-10-15 00:03:12,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:12,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:03:12,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:12,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:03:12,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:03:12,703 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-10-15 00:03:12,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 171 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) [2024-10-15 00:03:12,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:12,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-10-15 00:03:12,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:17,414 INFO L124 PetriNetUnfolderBase]: 32005/40621 cut-off events. [2024-10-15 00:03:17,414 INFO L125 PetriNetUnfolderBase]: For 1030/1030 co-relation queries the response was YES. [2024-10-15 00:03:17,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82004 conditions, 40621 events. 32005/40621 cut-off events. For 1030/1030 co-relation queries the response was YES. Maximal size of possible extension queue 1937. Compared 236056 event pairs, 23773 based on Foata normal form. 1/35759 useless extension candidates. Maximal degree in co-relation 75525. Up to 39189 conditions per place. [2024-10-15 00:03:17,857 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 40 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2024-10-15 00:03:17,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 72 transitions, 259 flow [2024-10-15 00:03:17,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:03:17,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:03:17,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2024-10-15 00:03:17,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5727848101265823 [2024-10-15 00:03:17,872 INFO L175 Difference]: Start difference. First operand has 83 places, 72 transitions, 171 flow. Second operand 4 states and 181 transitions. [2024-10-15 00:03:17,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 72 transitions, 259 flow [2024-10-15 00:03:18,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 72 transitions, 242 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-10-15 00:03:18,009 INFO L231 Difference]: Finished difference. Result has 76 places, 72 transitions, 177 flow [2024-10-15 00:03:18,011 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=76, PETRI_TRANSITIONS=72} [2024-10-15 00:03:18,014 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -7 predicate places. [2024-10-15 00:03:18,015 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 72 transitions, 177 flow [2024-10-15 00:03:18,015 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) [2024-10-15 00:03:18,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:18,015 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-15 00:03:18,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 00:03:18,016 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-15 00:03:18,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:18,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1462517101, now seen corresponding path program 1 times [2024-10-15 00:03:18,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:18,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135004069] [2024-10-15 00:03:18,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:18,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:18,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:18,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:18,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135004069] [2024-10-15 00:03:18,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135004069] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:18,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:18,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-15 00:03:18,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702765190] [2024-10-15 00:03:18,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:18,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:03:18,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:18,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:03:18,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-15 00:03:18,177 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-10-15 00:03:18,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 177 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) [2024-10-15 00:03:18,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:18,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-10-15 00:03:18,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:21,612 INFO L124 PetriNetUnfolderBase]: 32005/40620 cut-off events. [2024-10-15 00:03:21,612 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2024-10-15 00:03:21,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81231 conditions, 40620 events. 32005/40620 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 1937. Compared 235862 event pairs, 23773 based on Foata normal form. 1/35759 useless extension candidates. Maximal degree in co-relation 81204. Up to 39184 conditions per place. [2024-10-15 00:03:22,006 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 36 selfloop transitions, 7 changer transitions 0/71 dead transitions. [2024-10-15 00:03:22,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 71 transitions, 259 flow [2024-10-15 00:03:22,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:03:22,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:03:22,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 242 transitions. [2024-10-15 00:03:22,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.510548523206751 [2024-10-15 00:03:22,009 INFO L175 Difference]: Start difference. First operand has 76 places, 72 transitions, 177 flow. Second operand 6 states and 242 transitions. [2024-10-15 00:03:22,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 71 transitions, 259 flow [2024-10-15 00:03:22,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 71 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:03:22,012 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 184 flow [2024-10-15 00:03:22,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2024-10-15 00:03:22,013 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -4 predicate places. [2024-10-15 00:03:22,013 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 184 flow [2024-10-15 00:03:22,013 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) [2024-10-15 00:03:22,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:22,014 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-15 00:03:22,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-15 00:03:22,014 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-15 00:03:22,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:22,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1906609483, now seen corresponding path program 1 times [2024-10-15 00:03:22,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:22,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690017581] [2024-10-15 00:03:22,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:22,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:22,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:22,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:22,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690017581] [2024-10-15 00:03:22,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690017581] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:22,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162155768] [2024-10-15 00:03:22,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:22,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:22,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:22,121 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) [2024-10-15 00:03:22,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 00:03:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:22,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:03:22,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:22,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:22,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:22,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:22,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162155768] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:22,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:22,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-15 00:03:22,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577054464] [2024-10-15 00:03:22,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:22,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-15 00:03:22,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:22,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-15 00:03:22,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-15 00:03:22,298 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-10-15 00:03:22,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 184 flow. Second operand has 10 states, 10 states have (on average 34.0) internal successors, (340), 10 states have internal predecessors, (340), 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) [2024-10-15 00:03:22,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:22,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-10-15 00:03:22,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:25,226 INFO L124 PetriNetUnfolderBase]: 32008/40632 cut-off events. [2024-10-15 00:03:25,226 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-10-15 00:03:25,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81275 conditions, 40632 events. 32008/40632 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 1937. Compared 236308 event pairs, 23773 based on Foata normal form. 3/35771 useless extension candidates. Maximal degree in co-relation 81205. Up to 39191 conditions per place. [2024-10-15 00:03:25,483 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 39 selfloop transitions, 13 changer transitions 0/80 dead transitions. [2024-10-15 00:03:25,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 80 transitions, 342 flow [2024-10-15 00:03:25,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:03:25,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:03:25,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 385 transitions. [2024-10-15 00:03:25,489 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4873417721518987 [2024-10-15 00:03:25,490 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 184 flow. Second operand 10 states and 385 transitions. [2024-10-15 00:03:25,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 80 transitions, 342 flow [2024-10-15 00:03:25,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 80 transitions, 296 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-10-15 00:03:25,494 INFO L231 Difference]: Finished difference. Result has 86 places, 80 transitions, 236 flow [2024-10-15 00:03:25,494 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=236, PETRI_PLACES=86, PETRI_TRANSITIONS=80} [2024-10-15 00:03:25,495 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2024-10-15 00:03:25,495 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 80 transitions, 236 flow [2024-10-15 00:03:25,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 34.0) internal successors, (340), 10 states have internal predecessors, (340), 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) [2024-10-15 00:03:25,495 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:25,495 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:25,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 00:03:25,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:25,701 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-15 00:03:25,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:25,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1343238740, now seen corresponding path program 1 times [2024-10-15 00:03:25,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:25,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74068179] [2024-10-15 00:03:25,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:25,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:25,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:25,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:25,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74068179] [2024-10-15 00:03:25,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74068179] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:25,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:25,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:03:25,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143442458] [2024-10-15 00:03:25,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:25,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:03:25,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:25,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:03:25,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:03:25,785 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 79 [2024-10-15 00:03:25,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-10-15 00:03:25,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:25,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 79 [2024-10-15 00:03:25,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:28,450 INFO L124 PetriNetUnfolderBase]: 32007/40631 cut-off events. [2024-10-15 00:03:28,450 INFO L125 PetriNetUnfolderBase]: For 158/158 co-relation queries the response was YES. [2024-10-15 00:03:28,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81272 conditions, 40631 events. 32007/40631 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 1937. Compared 235882 event pairs, 23773 based on Foata normal form. 1/35771 useless extension candidates. Maximal degree in co-relation 81238. Up to 39195 conditions per place. [2024-10-15 00:03:28,664 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 48 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-10-15 00:03:28,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 79 transitions, 332 flow [2024-10-15 00:03:28,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:03:28,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:03:28,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-10-15 00:03:28,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.620253164556962 [2024-10-15 00:03:28,666 INFO L175 Difference]: Start difference. First operand has 86 places, 80 transitions, 236 flow. Second operand 3 states and 147 transitions. [2024-10-15 00:03:28,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 79 transitions, 332 flow [2024-10-15 00:03:28,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 79 transitions, 322 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-15 00:03:28,668 INFO L231 Difference]: Finished difference. Result has 86 places, 79 transitions, 226 flow [2024-10-15 00:03:28,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=86, PETRI_TRANSITIONS=79} [2024-10-15 00:03:28,669 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2024-10-15 00:03:28,670 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 79 transitions, 226 flow [2024-10-15 00:03:28,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-10-15 00:03:28,671 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:28,671 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:28,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-15 00:03:28,671 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-15 00:03:28,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:28,672 INFO L85 PathProgramCache]: Analyzing trace with hash 200136662, now seen corresponding path program 1 times [2024-10-15 00:03:28,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:28,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467764594] [2024-10-15 00:03:28,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:28,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:28,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:28,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:28,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467764594] [2024-10-15 00:03:28,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467764594] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:28,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541027950] [2024-10-15 00:03:28,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:28,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:28,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:28,991 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) [2024-10-15 00:03:28,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 00:03:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:29,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-15 00:03:29,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:29,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:03:29,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:29,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:29,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-15 00:03:29,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-10-15 00:03:29,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:29,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541027950] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:29,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:29,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-15 00:03:29,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330026602] [2024-10-15 00:03:29,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:29,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-15 00:03:29,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:29,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-15 00:03:29,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-15 00:03:29,318 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 79 [2024-10-15 00:03:29,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 79 transitions, 226 flow. Second operand has 11 states, 11 states have (on average 37.18181818181818) internal successors, (409), 11 states have internal predecessors, (409), 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) [2024-10-15 00:03:29,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:29,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 79 [2024-10-15 00:03:29,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:34,662 INFO L124 PetriNetUnfolderBase]: 46167/70061 cut-off events. [2024-10-15 00:03:34,663 INFO L125 PetriNetUnfolderBase]: For 484/484 co-relation queries the response was YES. [2024-10-15 00:03:34,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128250 conditions, 70061 events. 46167/70061 cut-off events. For 484/484 co-relation queries the response was YES. Maximal size of possible extension queue 3024. Compared 585376 event pairs, 18757 based on Foata normal form. 0/61407 useless extension candidates. Maximal degree in co-relation 128230. Up to 32815 conditions per place. [2024-10-15 00:03:35,108 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 87 selfloop transitions, 12 changer transitions 0/128 dead transitions. [2024-10-15 00:03:35,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 128 transitions, 532 flow [2024-10-15 00:03:35,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 00:03:35,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-15 00:03:35,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 371 transitions. [2024-10-15 00:03:35,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5870253164556962 [2024-10-15 00:03:35,110 INFO L175 Difference]: Start difference. First operand has 86 places, 79 transitions, 226 flow. Second operand 8 states and 371 transitions. [2024-10-15 00:03:35,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 128 transitions, 532 flow [2024-10-15 00:03:35,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 128 transitions, 528 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:03:35,113 INFO L231 Difference]: Finished difference. Result has 93 places, 82 transitions, 270 flow [2024-10-15 00:03:35,114 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=270, PETRI_PLACES=93, PETRI_TRANSITIONS=82} [2024-10-15 00:03:35,114 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 10 predicate places. [2024-10-15 00:03:35,114 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 82 transitions, 270 flow [2024-10-15 00:03:35,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 37.18181818181818) internal successors, (409), 11 states have internal predecessors, (409), 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) [2024-10-15 00:03:35,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:35,115 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:35,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 00:03:35,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:35,316 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-15 00:03:35,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:35,317 INFO L85 PathProgramCache]: Analyzing trace with hash 728860106, now seen corresponding path program 1 times [2024-10-15 00:03:35,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:35,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204521179] [2024-10-15 00:03:35,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:35,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:35,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:35,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:35,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204521179] [2024-10-15 00:03:35,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204521179] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:35,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:35,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:03:35,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777857467] [2024-10-15 00:03:35,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:35,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:03:35,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:35,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:03:35,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:03:35,377 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 79 [2024-10-15 00:03:35,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 82 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-10-15 00:03:35,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:35,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 79 [2024-10-15 00:03:35,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:44,812 INFO L124 PetriNetUnfolderBase]: 95418/124241 cut-off events. [2024-10-15 00:03:44,813 INFO L125 PetriNetUnfolderBase]: For 47632/47632 co-relation queries the response was YES. [2024-10-15 00:03:45,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280787 conditions, 124241 events. 95418/124241 cut-off events. For 47632/47632 co-relation queries the response was YES. Maximal size of possible extension queue 4081. Compared 808320 event pairs, 53624 based on Foata normal form. 1832/114965 useless extension candidates. Maximal degree in co-relation 280755. Up to 86322 conditions per place. [2024-10-15 00:03:45,812 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 115 selfloop transitions, 4 changer transitions 0/144 dead transitions. [2024-10-15 00:03:45,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 144 transitions, 690 flow [2024-10-15 00:03:45,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:03:45,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:03:45,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 225 transitions. [2024-10-15 00:03:45,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7120253164556962 [2024-10-15 00:03:45,814 INFO L175 Difference]: Start difference. First operand has 93 places, 82 transitions, 270 flow. Second operand 4 states and 225 transitions. [2024-10-15 00:03:45,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 144 transitions, 690 flow [2024-10-15 00:03:45,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 144 transitions, 680 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-15 00:03:45,860 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 289 flow [2024-10-15 00:03:45,860 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=289, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2024-10-15 00:03:45,861 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 11 predicate places. [2024-10-15 00:03:45,861 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 289 flow [2024-10-15 00:03:45,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-10-15 00:03:45,862 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:45,862 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:45,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-15 00:03:45,862 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-15 00:03:45,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:45,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1027190265, now seen corresponding path program 1 times [2024-10-15 00:03:45,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:45,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143350338] [2024-10-15 00:03:45,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:45,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:45,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:46,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:46,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:46,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143350338] [2024-10-15 00:03:46,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143350338] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:46,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186096473] [2024-10-15 00:03:46,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:46,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:46,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:46,165 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) [2024-10-15 00:03:46,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 00:03:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:46,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-15 00:03:46,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:46,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:03:46,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:46,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:46,445 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 14 treesize of output 12 [2024-10-15 00:03:46,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-15 00:03:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:46,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186096473] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:46,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:46,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-15 00:03:46,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390440117] [2024-10-15 00:03:46,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:46,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-15 00:03:46,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:46,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-15 00:03:46,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-15 00:03:46,489 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 79 [2024-10-15 00:03:46,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 289 flow. Second operand has 11 states, 11 states have (on average 37.54545454545455) internal successors, (413), 11 states have internal predecessors, (413), 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) [2024-10-15 00:03:46,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:46,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 79 [2024-10-15 00:03:46,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand