./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-prod-cons-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons-eq.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 3dfcb4860b3021904fb2e25e7c2a428c9bcb0d82c2290cad723458395a0647ea --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:43:45,416 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:43:45,470 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:43:45,475 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:43:45,475 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:43:45,499 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:43:45,500 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:43:45,500 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:43:45,501 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:43:45,502 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:43:45,502 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:43:45,503 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:43:45,503 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:43:45,503 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:43:45,503 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:43:45,504 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:43:45,504 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:43:45,504 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:43:45,504 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:43:45,505 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:43:45,505 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:43:45,505 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:43:45,505 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:43:45,506 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:43:45,506 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:43:45,506 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:43:45,506 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:43:45,506 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:43:45,506 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:43:45,507 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:43:45,507 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:43:45,507 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:43:45,507 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:43:45,507 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:43:45,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:43:45,508 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:43:45,508 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:43:45,508 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:43:45,508 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:43:45,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:43:45,509 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:43:45,510 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:43:45,510 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:43:45,510 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:43:45,510 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dfcb4860b3021904fb2e25e7c2a428c9bcb0d82c2290cad723458395a0647ea [2024-10-24 23:43:45,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:43:45,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:43:45,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:43:45,708 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:43:45,708 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:43:45,709 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2024-10-24 23:43:46,896 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:43:47,041 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:43:47,045 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2024-10-24 23:43:47,055 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ce11530b/48b661114efc42899479dd28bd1438c1/FLAG2d07d1cd1 [2024-10-24 23:43:47,066 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ce11530b/48b661114efc42899479dd28bd1438c1 [2024-10-24 23:43:47,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:43:47,069 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:43:47,070 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:43:47,070 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:43:47,075 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:43:47,076 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:43:47" (1/1) ... [2024-10-24 23:43:47,077 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d0fd58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:47, skipping insertion in model container [2024-10-24 23:43:47,077 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:43:47" (1/1) ... [2024-10-24 23:43:47,101 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:43:47,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:43:47,272 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:43:47,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:43:47,319 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:43:47,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:47 WrapperNode [2024-10-24 23:43:47,320 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:43:47,320 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:43:47,321 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:43:47,321 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:43:47,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:47" (1/1) ... [2024-10-24 23:43:47,332 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:47" (1/1) ... [2024-10-24 23:43:47,366 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 29, calls inlined = 35, statements flattened = 435 [2024-10-24 23:43:47,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:43:47,371 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:43:47,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:43:47,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:43:47,381 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:47" (1/1) ... [2024-10-24 23:43:47,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:47" (1/1) ... [2024-10-24 23:43:47,387 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:47" (1/1) ... [2024-10-24 23:43:47,407 INFO L175 MemorySlicer]: Split 24 memory accesses to 4 slices as follows [2, 3, 3, 16]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 4]. [2024-10-24 23:43:47,407 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:47" (1/1) ... [2024-10-24 23:43:47,407 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:47" (1/1) ... [2024-10-24 23:43:47,416 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:47" (1/1) ... [2024-10-24 23:43:47,420 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:47" (1/1) ... [2024-10-24 23:43:47,422 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:47" (1/1) ... [2024-10-24 23:43:47,424 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:47" (1/1) ... [2024-10-24 23:43:47,431 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:43:47,432 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:43:47,432 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:43:47,432 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:43:47,433 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:47" (1/1) ... [2024-10-24 23:43:47,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:43:47,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:47,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 23:43:47,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 23:43:47,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:43:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 23:43:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 23:43:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 23:43:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-24 23:43:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 23:43:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 23:43:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 23:43:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 23:43:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 23:43:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 23:43:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 23:43:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 23:43:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 23:43:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 23:43:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 23:43:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-24 23:43:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 23:43:47,501 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 23:43:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 23:43:47,501 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 23:43:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 23:43:47,501 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 23:43:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:43:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 23:43:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 23:43:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 23:43:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 23:43:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 23:43:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 23:43:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:43:47,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:43:47,504 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:43:47,640 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:43:47,642 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:43:48,177 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:43:48,178 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:43:48,601 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:43:48,601 INFO L314 CfgBuilder]: Removed 9 assume(true) statements. [2024-10-24 23:43:48,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:43:48 BoogieIcfgContainer [2024-10-24 23:43:48,602 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:43:48,603 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:43:48,603 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:43:48,606 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:43:48,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:43:47" (1/3) ... [2024-10-24 23:43:48,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee99a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:43:48, skipping insertion in model container [2024-10-24 23:43:48,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:47" (2/3) ... [2024-10-24 23:43:48,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee99a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:43:48, skipping insertion in model container [2024-10-24 23:43:48,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:43:48" (3/3) ... [2024-10-24 23:43:48,610 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2024-10-24 23:43:48,623 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:43:48,623 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-10-24 23:43:48,623 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:43:48,688 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 23:43:48,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 77 transitions, 175 flow [2024-10-24 23:43:48,748 INFO L124 PetriNetUnfolderBase]: 9/74 cut-off events. [2024-10-24 23:43:48,749 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 23:43:48,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 74 events. 9/74 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 219 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-10-24 23:43:48,753 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 77 transitions, 175 flow [2024-10-24 23:43:48,756 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 72 transitions, 159 flow [2024-10-24 23:43:48,766 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:43:48,772 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;@67cd0f6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:43:48,773 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-10-24 23:43:48,775 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:43:48,775 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-24 23:43:48,776 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:43:48,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:48,776 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 23:43:48,777 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:43:48,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:48,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1383832, now seen corresponding path program 1 times [2024-10-24 23:43:48,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:48,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066099409] [2024-10-24 23:43:48,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:48,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:49,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:49,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:49,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066099409] [2024-10-24 23:43:49,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066099409] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:49,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:43:49,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:43:49,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192638603] [2024-10-24 23:43:49,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:49,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:43:49,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:49,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:43:49,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:43:49,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-24 23:43:49,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:49,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:49,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-24 23:43:49,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:49,435 INFO L124 PetriNetUnfolderBase]: 993/1459 cut-off events. [2024-10-24 23:43:49,436 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-10-24 23:43:49,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2950 conditions, 1459 events. 993/1459 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 7721 event pairs, 581 based on Foata normal form. 4/765 useless extension candidates. Maximal degree in co-relation 2759. Up to 1343 conditions per place. [2024-10-24 23:43:49,450 INFO L140 encePairwiseOnDemand]: 55/77 looper letters, 32 selfloop transitions, 12 changer transitions 1/62 dead transitions. [2024-10-24 23:43:49,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 62 transitions, 229 flow [2024-10-24 23:43:49,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:43:49,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:43:49,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-10-24 23:43:49,459 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4383116883116883 [2024-10-24 23:43:49,460 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 159 flow. Second operand 4 states and 135 transitions. [2024-10-24 23:43:49,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 62 transitions, 229 flow [2024-10-24 23:43:49,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 23:43:49,471 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 151 flow [2024-10-24 23:43:49,473 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2024-10-24 23:43:49,477 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -12 predicate places. [2024-10-24 23:43:49,477 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 151 flow [2024-10-24 23:43:49,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:49,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:49,478 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-24 23:43:49,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:43:49,478 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:43:49,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:49,479 INFO L85 PathProgramCache]: Analyzing trace with hash 42900194, now seen corresponding path program 1 times [2024-10-24 23:43:49,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:49,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953882660] [2024-10-24 23:43:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:49,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:49,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:49,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:49,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953882660] [2024-10-24 23:43:49,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953882660] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:49,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:43:49,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:43:49,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600743742] [2024-10-24 23:43:49,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:49,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:43:49,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:49,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:43:49,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:43:49,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-24 23:43:49,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:49,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:49,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-24 23:43:49,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:49,893 INFO L124 PetriNetUnfolderBase]: 993/1468 cut-off events. [2024-10-24 23:43:49,894 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-10-24 23:43:49,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2956 conditions, 1468 events. 993/1468 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 7816 event pairs, 579 based on Foata normal form. 4/781 useless extension candidates. Maximal degree in co-relation 2858. Up to 1354 conditions per place. [2024-10-24 23:43:49,903 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 42 selfloop transitions, 14 changer transitions 0/73 dead transitions. [2024-10-24 23:43:49,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 73 transitions, 307 flow [2024-10-24 23:43:49,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:43:49,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:43:49,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2024-10-24 23:43:49,906 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-10-24 23:43:49,906 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 151 flow. Second operand 4 states and 140 transitions. [2024-10-24 23:43:49,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 73 transitions, 307 flow [2024-10-24 23:43:49,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 73 transitions, 263 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:43:49,909 INFO L231 Difference]: Finished difference. Result has 63 places, 73 transitions, 239 flow [2024-10-24 23:43:49,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=63, PETRI_TRANSITIONS=73} [2024-10-24 23:43:49,910 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2024-10-24 23:43:49,910 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 73 transitions, 239 flow [2024-10-24 23:43:49,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:49,911 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:49,911 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 23:43:49,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 23:43:49,911 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:43:49,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:49,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1720422664, now seen corresponding path program 1 times [2024-10-24 23:43:49,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:49,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153925506] [2024-10-24 23:43:49,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:49,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:50,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:50,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:50,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153925506] [2024-10-24 23:43:50,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153925506] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:50,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:43:50,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:43:50,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620640194] [2024-10-24 23:43:50,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:50,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:43:50,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:50,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:43:50,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:43:50,016 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-10-24 23:43:50,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 73 transitions, 239 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:50,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:50,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-10-24 23:43:50,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:50,235 INFO L124 PetriNetUnfolderBase]: 994/1472 cut-off events. [2024-10-24 23:43:50,236 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-10-24 23:43:50,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2985 conditions, 1472 events. 994/1472 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 7778 event pairs, 579 based on Foata normal form. 1/783 useless extension candidates. Maximal degree in co-relation 2894. Up to 1362 conditions per place. [2024-10-24 23:43:50,242 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 52 selfloop transitions, 5 changer transitions 0/76 dead transitions. [2024-10-24 23:43:50,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 76 transitions, 359 flow [2024-10-24 23:43:50,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:43:50,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:43:50,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-10-24 23:43:50,244 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4902597402597403 [2024-10-24 23:43:50,244 INFO L175 Difference]: Start difference. First operand has 63 places, 73 transitions, 239 flow. Second operand 4 states and 151 transitions. [2024-10-24 23:43:50,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 76 transitions, 359 flow [2024-10-24 23:43:50,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 359 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:43:50,246 INFO L231 Difference]: Finished difference. Result has 68 places, 76 transitions, 271 flow [2024-10-24 23:43:50,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=68, PETRI_TRANSITIONS=76} [2024-10-24 23:43:50,247 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -5 predicate places. [2024-10-24 23:43:50,247 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 76 transitions, 271 flow [2024-10-24 23:43:50,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:50,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:50,247 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-24 23:43:50,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 23:43:50,248 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:43:50,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:50,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1859173423, now seen corresponding path program 1 times [2024-10-24 23:43:50,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:50,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627010075] [2024-10-24 23:43:50,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:50,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:50,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:50,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:50,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627010075] [2024-10-24 23:43:50,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627010075] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:50,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407864535] [2024-10-24 23:43:50,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:50,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:50,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:50,319 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:43:50,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:43:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:50,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:43:50,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:50,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:50,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:50,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:50,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407864535] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:50,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:50,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-24 23:43:50,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296117020] [2024-10-24 23:43:50,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:50,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 23:43:50,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:50,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 23:43:50,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-24 23:43:50,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-24 23:43:50,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 76 transitions, 271 flow. Second operand has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:50,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:50,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-24 23:43:50,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:50,818 INFO L124 PetriNetUnfolderBase]: 1006/1520 cut-off events. [2024-10-24 23:43:50,818 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-10-24 23:43:50,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3132 conditions, 1520 events. 1006/1520 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 8178 event pairs, 579 based on Foata normal form. 0/826 useless extension candidates. Maximal degree in co-relation 3101. Up to 1363 conditions per place. [2024-10-24 23:43:50,824 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 45 selfloop transitions, 50 changer transitions 0/112 dead transitions. [2024-10-24 23:43:50,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 112 transitions, 626 flow [2024-10-24 23:43:50,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:43:50,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:43:50,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2024-10-24 23:43:50,826 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3948051948051948 [2024-10-24 23:43:50,826 INFO L175 Difference]: Start difference. First operand has 68 places, 76 transitions, 271 flow. Second operand 10 states and 304 transitions. [2024-10-24 23:43:50,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 112 transitions, 626 flow [2024-10-24 23:43:50,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 112 transitions, 619 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:43:50,829 INFO L231 Difference]: Finished difference. Result has 79 places, 112 transitions, 597 flow [2024-10-24 23:43:50,829 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=597, PETRI_PLACES=79, PETRI_TRANSITIONS=112} [2024-10-24 23:43:50,829 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 6 predicate places. [2024-10-24 23:43:50,830 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 112 transitions, 597 flow [2024-10-24 23:43:50,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:50,830 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:50,830 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:50,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 23:43:51,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:51,031 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:43:51,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:51,032 INFO L85 PathProgramCache]: Analyzing trace with hash 236349530, now seen corresponding path program 1 times [2024-10-24 23:43:51,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:51,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359219407] [2024-10-24 23:43:51,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:51,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:51,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:51,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359219407] [2024-10-24 23:43:51,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359219407] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:51,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:43:51,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:43:51,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119107562] [2024-10-24 23:43:51,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:51,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:43:51,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:51,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:43:51,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:43:51,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-10-24 23:43:51,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 112 transitions, 597 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:51,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:51,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-10-24 23:43:51,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:51,318 INFO L124 PetriNetUnfolderBase]: 1012/1545 cut-off events. [2024-10-24 23:43:51,318 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-10-24 23:43:51,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3301 conditions, 1545 events. 1012/1545 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 8439 event pairs, 579 based on Foata normal form. 1/858 useless extension candidates. Maximal degree in co-relation 3268. Up to 1401 conditions per place. [2024-10-24 23:43:51,325 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 102 selfloop transitions, 9 changer transitions 0/130 dead transitions. [2024-10-24 23:43:51,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 130 transitions, 933 flow [2024-10-24 23:43:51,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:43:51,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:43:51,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2024-10-24 23:43:51,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-24 23:43:51,326 INFO L175 Difference]: Start difference. First operand has 79 places, 112 transitions, 597 flow. Second operand 4 states and 154 transitions. [2024-10-24 23:43:51,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 130 transitions, 933 flow [2024-10-24 23:43:51,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 130 transitions, 772 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-10-24 23:43:51,331 INFO L231 Difference]: Finished difference. Result has 80 places, 119 transitions, 544 flow [2024-10-24 23:43:51,331 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=544, PETRI_PLACES=80, PETRI_TRANSITIONS=119} [2024-10-24 23:43:51,331 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2024-10-24 23:43:51,332 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 119 transitions, 544 flow [2024-10-24 23:43:51,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:51,332 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:51,332 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:51,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 23:43:51,332 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:43:51,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:51,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1265430579, now seen corresponding path program 1 times [2024-10-24 23:43:51,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:51,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743033623] [2024-10-24 23:43:51,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:51,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:51,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:43:51,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:51,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743033623] [2024-10-24 23:43:51,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743033623] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:51,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:43:51,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 23:43:51,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554970953] [2024-10-24 23:43:51,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:51,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:43:51,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:51,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:43:51,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:43:51,465 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-10-24 23:43:51,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 119 transitions, 544 flow. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:51,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:51,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-10-24 23:43:51,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:51,802 INFO L124 PetriNetUnfolderBase]: 1409/2292 cut-off events. [2024-10-24 23:43:51,803 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-10-24 23:43:51,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4837 conditions, 2292 events. 1409/2292 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 14737 event pairs, 953 based on Foata normal form. 33/1414 useless extension candidates. Maximal degree in co-relation 4802. Up to 1410 conditions per place. [2024-10-24 23:43:51,813 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 144 selfloop transitions, 13 changer transitions 0/178 dead transitions. [2024-10-24 23:43:51,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 178 transitions, 1134 flow [2024-10-24 23:43:51,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:43:51,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:43:51,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 214 transitions. [2024-10-24 23:43:51,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5558441558441558 [2024-10-24 23:43:51,815 INFO L175 Difference]: Start difference. First operand has 80 places, 119 transitions, 544 flow. Second operand 5 states and 214 transitions. [2024-10-24 23:43:51,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 178 transitions, 1134 flow [2024-10-24 23:43:51,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 178 transitions, 1127 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:43:51,819 INFO L231 Difference]: Finished difference. Result has 85 places, 125 transitions, 634 flow [2024-10-24 23:43:51,819 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=634, PETRI_PLACES=85, PETRI_TRANSITIONS=125} [2024-10-24 23:43:51,819 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 12 predicate places. [2024-10-24 23:43:51,820 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 125 transitions, 634 flow [2024-10-24 23:43:51,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:51,820 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:51,820 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:51,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 23:43:51,820 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:43:51,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:51,821 INFO L85 PathProgramCache]: Analyzing trace with hash -501156150, now seen corresponding path program 1 times [2024-10-24 23:43:51,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:51,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730988727] [2024-10-24 23:43:51,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:51,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:51,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:51,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:51,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730988727] [2024-10-24 23:43:51,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730988727] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:51,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:43:51,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:43:51,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905617024] [2024-10-24 23:43:51,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:51,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:43:51,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:51,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:43:51,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:43:51,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-10-24 23:43:51,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 125 transitions, 634 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:51,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:51,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-10-24 23:43:51,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:52,133 INFO L124 PetriNetUnfolderBase]: 1349/2084 cut-off events. [2024-10-24 23:43:52,133 INFO L125 PetriNetUnfolderBase]: For 316/316 co-relation queries the response was YES. [2024-10-24 23:43:52,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4691 conditions, 2084 events. 1349/2084 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 11190 event pairs, 327 based on Foata normal form. 26/1572 useless extension candidates. Maximal degree in co-relation 4653. Up to 1554 conditions per place. [2024-10-24 23:43:52,142 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 112 selfloop transitions, 2 changer transitions 2/137 dead transitions. [2024-10-24 23:43:52,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 137 transitions, 896 flow [2024-10-24 23:43:52,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:43:52,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:43:52,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2024-10-24 23:43:52,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6147186147186147 [2024-10-24 23:43:52,144 INFO L175 Difference]: Start difference. First operand has 85 places, 125 transitions, 634 flow. Second operand 3 states and 142 transitions. [2024-10-24 23:43:52,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 137 transitions, 896 flow [2024-10-24 23:43:52,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 137 transitions, 888 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 23:43:52,147 INFO L231 Difference]: Finished difference. Result has 87 places, 126 transitions, 648 flow [2024-10-24 23:43:52,147 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=648, PETRI_PLACES=87, PETRI_TRANSITIONS=126} [2024-10-24 23:43:52,148 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 14 predicate places. [2024-10-24 23:43:52,149 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 126 transitions, 648 flow [2024-10-24 23:43:52,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:52,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:52,149 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:52,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 23:43:52,149 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:43:52,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:52,149 INFO L85 PathProgramCache]: Analyzing trace with hash -501156149, now seen corresponding path program 1 times [2024-10-24 23:43:52,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:52,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821968692] [2024-10-24 23:43:52,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:52,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:52,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:52,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:52,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821968692] [2024-10-24 23:43:52,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821968692] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:52,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:43:52,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:43:52,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086428755] [2024-10-24 23:43:52,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:52,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:43:52,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:52,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:43:52,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:43:52,212 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-10-24 23:43:52,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 126 transitions, 648 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:52,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:52,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-10-24 23:43:52,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:52,467 INFO L124 PetriNetUnfolderBase]: 1300/1995 cut-off events. [2024-10-24 23:43:52,467 INFO L125 PetriNetUnfolderBase]: For 480/488 co-relation queries the response was YES. [2024-10-24 23:43:52,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5173 conditions, 1995 events. 1300/1995 cut-off events. For 480/488 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 10408 event pairs, 284 based on Foata normal form. 30/1568 useless extension candidates. Maximal degree in co-relation 5134. Up to 1554 conditions per place. [2024-10-24 23:43:52,477 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 111 selfloop transitions, 2 changer transitions 2/136 dead transitions. [2024-10-24 23:43:52,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 136 transitions, 904 flow [2024-10-24 23:43:52,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:43:52,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:43:52,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-10-24 23:43:52,480 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5887445887445888 [2024-10-24 23:43:52,480 INFO L175 Difference]: Start difference. First operand has 87 places, 126 transitions, 648 flow. Second operand 3 states and 136 transitions. [2024-10-24 23:43:52,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 136 transitions, 904 flow [2024-10-24 23:43:52,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 136 transitions, 902 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:43:52,486 INFO L231 Difference]: Finished difference. Result has 89 places, 126 transitions, 654 flow [2024-10-24 23:43:52,486 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=654, PETRI_PLACES=89, PETRI_TRANSITIONS=126} [2024-10-24 23:43:52,487 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 16 predicate places. [2024-10-24 23:43:52,487 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 126 transitions, 654 flow [2024-10-24 23:43:52,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:52,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:52,488 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:52,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 23:43:52,489 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:43:52,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:52,489 INFO L85 PathProgramCache]: Analyzing trace with hash 628565579, now seen corresponding path program 1 times [2024-10-24 23:43:52,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:52,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781281523] [2024-10-24 23:43:52,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:52,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:52,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:43:52,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:52,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781281523] [2024-10-24 23:43:52,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781281523] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:52,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301908196] [2024-10-24 23:43:52,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:52,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:52,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:52,571 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:43:52,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:43:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:52,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:43:52,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:43:52,693 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:43:52,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301908196] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:52,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:43:52,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-24 23:43:52,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21822215] [2024-10-24 23:43:52,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:52,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:43:52,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:52,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:43:52,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:43:52,699 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-10-24 23:43:52,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 126 transitions, 654 flow. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:52,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:52,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-10-24 23:43:52,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:52,993 INFO L124 PetriNetUnfolderBase]: 991/1665 cut-off events. [2024-10-24 23:43:52,993 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2024-10-24 23:43:52,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4369 conditions, 1665 events. 991/1665 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10051 event pairs, 721 based on Foata normal form. 1/1338 useless extension candidates. Maximal degree in co-relation 4330. Up to 1519 conditions per place. [2024-10-24 23:43:53,001 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 89 selfloop transitions, 17 changer transitions 0/125 dead transitions. [2024-10-24 23:43:53,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 125 transitions, 862 flow [2024-10-24 23:43:53,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:43:53,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:43:53,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2024-10-24 23:43:53,002 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43506493506493504 [2024-10-24 23:43:53,002 INFO L175 Difference]: Start difference. First operand has 89 places, 126 transitions, 654 flow. Second operand 6 states and 201 transitions. [2024-10-24 23:43:53,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 125 transitions, 862 flow [2024-10-24 23:43:53,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 125 transitions, 858 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:43:53,006 INFO L231 Difference]: Finished difference. Result has 91 places, 125 transitions, 680 flow [2024-10-24 23:43:53,006 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=680, PETRI_PLACES=91, PETRI_TRANSITIONS=125} [2024-10-24 23:43:53,006 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 18 predicate places. [2024-10-24 23:43:53,006 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 125 transitions, 680 flow [2024-10-24 23:43:53,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:53,007 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:53,007 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:53,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 23:43:53,210 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,SelfDestructingSolverStorable8 [2024-10-24 23:43:53,211 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:43:53,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:53,211 INFO L85 PathProgramCache]: Analyzing trace with hash -736677857, now seen corresponding path program 1 times [2024-10-24 23:43:53,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:53,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118835882] [2024-10-24 23:43:53,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:53,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:53,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:53,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:53,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118835882] [2024-10-24 23:43:53,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118835882] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:53,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861664982] [2024-10-24 23:43:53,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:53,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:53,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:53,295 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:43:53,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 23:43:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:53,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:43:53,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:53,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:53,425 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:43:53,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861664982] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:53,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:43:53,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-24 23:43:53,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433188510] [2024-10-24 23:43:53,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:53,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:43:53,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:53,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:43:53,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:43:53,433 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-10-24 23:43:53,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 125 transitions, 680 flow. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:53,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:53,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-10-24 23:43:53,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:53,700 INFO L124 PetriNetUnfolderBase]: 991/1663 cut-off events. [2024-10-24 23:43:53,700 INFO L125 PetriNetUnfolderBase]: For 488/488 co-relation queries the response was YES. [2024-10-24 23:43:53,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4352 conditions, 1663 events. 991/1663 cut-off events. For 488/488 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10107 event pairs, 721 based on Foata normal form. 2/1336 useless extension candidates. Maximal degree in co-relation 4309. Up to 1462 conditions per place. [2024-10-24 23:43:53,707 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 100 selfloop transitions, 17 changer transitions 0/135 dead transitions. [2024-10-24 23:43:53,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 135 transitions, 966 flow [2024-10-24 23:43:53,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:43:53,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:43:53,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 204 transitions. [2024-10-24 23:43:53,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-10-24 23:43:53,709 INFO L175 Difference]: Start difference. First operand has 91 places, 125 transitions, 680 flow. Second operand 6 states and 204 transitions. [2024-10-24 23:43:53,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 135 transitions, 966 flow [2024-10-24 23:43:53,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 135 transitions, 904 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-24 23:43:53,713 INFO L231 Difference]: Finished difference. Result has 90 places, 124 transitions, 648 flow [2024-10-24 23:43:53,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=648, PETRI_PLACES=90, PETRI_TRANSITIONS=124} [2024-10-24 23:43:53,714 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 17 predicate places. [2024-10-24 23:43:53,714 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 124 transitions, 648 flow [2024-10-24 23:43:53,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:53,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:53,714 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:53,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 23:43:53,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:53,915 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:43:53,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:53,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1989302111, now seen corresponding path program 1 times [2024-10-24 23:43:53,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:53,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80456291] [2024-10-24 23:43:53,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:53,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:53,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:43:53,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:53,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80456291] [2024-10-24 23:43:53,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80456291] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:53,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638895338] [2024-10-24 23:43:53,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:53,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:53,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:53,992 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:43:53,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 23:43:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:54,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:43:54,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:54,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:43:54,111 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:54,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:43:54,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638895338] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:54,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:54,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-24 23:43:54,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92054588] [2024-10-24 23:43:54,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:54,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:43:54,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:54,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:43:54,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:43:54,152 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-10-24 23:43:54,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 124 transitions, 648 flow. Second operand has 12 states, 12 states have (on average 27.5) internal successors, (330), 12 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:54,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:54,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-10-24 23:43:54,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:54,461 INFO L124 PetriNetUnfolderBase]: 994/1675 cut-off events. [2024-10-24 23:43:54,461 INFO L125 PetriNetUnfolderBase]: For 501/501 co-relation queries the response was YES. [2024-10-24 23:43:54,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4383 conditions, 1675 events. 994/1675 cut-off events. For 501/501 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10107 event pairs, 721 based on Foata normal form. 3/1351 useless extension candidates. Maximal degree in co-relation 4313. Up to 1526 conditions per place. [2024-10-24 23:43:54,467 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 92 selfloop transitions, 23 changer transitions 0/133 dead transitions. [2024-10-24 23:43:54,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 133 transitions, 920 flow [2024-10-24 23:43:54,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:43:54,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:43:54,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 316 transitions. [2024-10-24 23:43:54,469 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4103896103896104 [2024-10-24 23:43:54,469 INFO L175 Difference]: Start difference. First operand has 90 places, 124 transitions, 648 flow. Second operand 10 states and 316 transitions. [2024-10-24 23:43:54,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 133 transitions, 920 flow [2024-10-24 23:43:54,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 133 transitions, 870 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-10-24 23:43:54,472 INFO L231 Difference]: Finished difference. Result has 98 places, 133 transitions, 704 flow [2024-10-24 23:43:54,472 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=704, PETRI_PLACES=98, PETRI_TRANSITIONS=133} [2024-10-24 23:43:54,473 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 25 predicate places. [2024-10-24 23:43:54,473 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 133 transitions, 704 flow [2024-10-24 23:43:54,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.5) internal successors, (330), 12 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:54,473 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:54,473 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:54,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 23:43:54,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:54,677 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:43:54,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:54,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1362175725, now seen corresponding path program 1 times [2024-10-24 23:43:54,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:54,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145785798] [2024-10-24 23:43:54,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:54,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:54,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:54,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:54,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145785798] [2024-10-24 23:43:54,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145785798] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:54,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877193000] [2024-10-24 23:43:54,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:54,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:54,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:54,755 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:43:54,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 23:43:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:54,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:43:54,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:54,874 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:54,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:54,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877193000] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:54,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:54,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-24 23:43:54,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928685312] [2024-10-24 23:43:54,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:54,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:43:54,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:54,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:43:54,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:43:54,908 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-10-24 23:43:54,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 133 transitions, 704 flow. Second operand has 12 states, 12 states have (on average 27.833333333333332) internal successors, (334), 12 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:54,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:54,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-10-24 23:43:54,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:55,182 INFO L124 PetriNetUnfolderBase]: 1030/1825 cut-off events. [2024-10-24 23:43:55,182 INFO L125 PetriNetUnfolderBase]: For 607/607 co-relation queries the response was YES. [2024-10-24 23:43:55,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4830 conditions, 1825 events. 1030/1825 cut-off events. For 607/607 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11292 event pairs, 721 based on Foata normal form. 6/1503 useless extension candidates. Maximal degree in co-relation 4785. Up to 1512 conditions per place. [2024-10-24 23:43:55,190 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 146 selfloop transitions, 34 changer transitions 0/198 dead transitions. [2024-10-24 23:43:55,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 198 transitions, 1408 flow [2024-10-24 23:43:55,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:43:55,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:43:55,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2024-10-24 23:43:55,191 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42597402597402595 [2024-10-24 23:43:55,191 INFO L175 Difference]: Start difference. First operand has 98 places, 133 transitions, 704 flow. Second operand 10 states and 328 transitions. [2024-10-24 23:43:55,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 198 transitions, 1408 flow [2024-10-24 23:43:55,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 198 transitions, 1387 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-24 23:43:55,196 INFO L231 Difference]: Finished difference. Result has 108 places, 154 transitions, 909 flow [2024-10-24 23:43:55,196 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=909, PETRI_PLACES=108, PETRI_TRANSITIONS=154} [2024-10-24 23:43:55,196 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 35 predicate places. [2024-10-24 23:43:55,197 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 154 transitions, 909 flow [2024-10-24 23:43:55,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.833333333333332) internal successors, (334), 12 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:55,197 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:55,197 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-24 23:43:55,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 23:43:55,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-24 23:43:55,398 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:43:55,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:55,398 INFO L85 PathProgramCache]: Analyzing trace with hash 66792994, now seen corresponding path program 2 times [2024-10-24 23:43:55,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:55,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558586558] [2024-10-24 23:43:55,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:55,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:55,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:55,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558586558] [2024-10-24 23:43:55,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558586558] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:55,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886697029] [2024-10-24 23:43:55,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:43:55,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:55,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:55,509 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:43:55,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 23:43:55,588 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:43:55,588 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:43:55,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:43:55,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:55,621 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:43:55,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:55,640 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:43:55,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886697029] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:55,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:55,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-24 23:43:55,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886095304] [2024-10-24 23:43:55,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:55,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 23:43:55,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:55,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 23:43:55,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-24 23:43:55,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-24 23:43:55,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 154 transitions, 909 flow. Second operand has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:55,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:55,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-24 23:43:55,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:56,162 INFO L124 PetriNetUnfolderBase]: 1044/1880 cut-off events. [2024-10-24 23:43:56,162 INFO L125 PetriNetUnfolderBase]: For 1017/1017 co-relation queries the response was YES. [2024-10-24 23:43:56,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5094 conditions, 1880 events. 1044/1880 cut-off events. For 1017/1017 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 11634 event pairs, 721 based on Foata normal form. 15/1566 useless extension candidates. Maximal degree in co-relation 5045. Up to 1553 conditions per place. [2024-10-24 23:43:56,170 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 65 selfloop transitions, 90 changer transitions 0/170 dead transitions. [2024-10-24 23:43:56,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 170 transitions, 1320 flow [2024-10-24 23:43:56,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-24 23:43:56,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-24 23:43:56,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 588 transitions. [2024-10-24 23:43:56,173 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-10-24 23:43:56,173 INFO L175 Difference]: Start difference. First operand has 108 places, 154 transitions, 909 flow. Second operand 24 states and 588 transitions. [2024-10-24 23:43:56,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 170 transitions, 1320 flow [2024-10-24 23:43:56,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 170 transitions, 1294 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-24 23:43:56,179 INFO L231 Difference]: Finished difference. Result has 130 places, 170 transitions, 1216 flow [2024-10-24 23:43:56,179 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1216, PETRI_PLACES=130, PETRI_TRANSITIONS=170} [2024-10-24 23:43:56,179 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 57 predicate places. [2024-10-24 23:43:56,179 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 170 transitions, 1216 flow [2024-10-24 23:43:56,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:56,180 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:56,180 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:56,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 23:43:56,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:56,381 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:43:56,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:56,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1462387143, now seen corresponding path program 1 times [2024-10-24 23:43:56,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:56,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216759062] [2024-10-24 23:43:56,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:56,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:56,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:56,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:56,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216759062] [2024-10-24 23:43:56,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216759062] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:56,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:43:56,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:43:56,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152457113] [2024-10-24 23:43:56,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:56,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:43:56,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:56,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:43:56,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:43:56,452 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-10-24 23:43:56,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 170 transitions, 1216 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:56,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:56,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-10-24 23:43:56,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:56,736 INFO L124 PetriNetUnfolderBase]: 1197/2419 cut-off events. [2024-10-24 23:43:56,736 INFO L125 PetriNetUnfolderBase]: For 1955/1955 co-relation queries the response was YES. [2024-10-24 23:43:56,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7238 conditions, 2419 events. 1197/2419 cut-off events. For 1955/1955 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 16324 event pairs, 783 based on Foata normal form. 32/2147 useless extension candidates. Maximal degree in co-relation 7160. Up to 1689 conditions per place. [2024-10-24 23:43:56,749 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 255 selfloop transitions, 3 changer transitions 15/291 dead transitions. [2024-10-24 23:43:56,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 291 transitions, 2707 flow [2024-10-24 23:43:56,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:43:56,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:43:56,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2024-10-24 23:43:56,751 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-10-24 23:43:56,751 INFO L175 Difference]: Start difference. First operand has 130 places, 170 transitions, 1216 flow. Second operand 4 states and 182 transitions. [2024-10-24 23:43:56,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 291 transitions, 2707 flow [2024-10-24 23:43:56,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 291 transitions, 2383 flow, removed 39 selfloop flow, removed 10 redundant places. [2024-10-24 23:43:56,763 INFO L231 Difference]: Finished difference. Result has 124 places, 170 transitions, 1033 flow [2024-10-24 23:43:56,763 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1033, PETRI_PLACES=124, PETRI_TRANSITIONS=170} [2024-10-24 23:43:56,763 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 51 predicate places. [2024-10-24 23:43:56,764 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 170 transitions, 1033 flow [2024-10-24 23:43:56,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:56,764 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:56,764 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:56,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 23:43:56,764 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:43:56,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:56,765 INFO L85 PathProgramCache]: Analyzing trace with hash -267552598, now seen corresponding path program 1 times [2024-10-24 23:43:56,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:56,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818538770] [2024-10-24 23:43:56,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:56,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:56,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:43:56,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:56,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818538770] [2024-10-24 23:43:56,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818538770] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:56,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:43:56,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:43:56,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503893522] [2024-10-24 23:43:56,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:56,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:43:56,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:56,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:43:56,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:43:56,835 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-10-24 23:43:56,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 170 transitions, 1033 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:56,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:56,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-10-24 23:43:56,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:57,153 INFO L124 PetriNetUnfolderBase]: 1515/3071 cut-off events. [2024-10-24 23:43:57,153 INFO L125 PetriNetUnfolderBase]: For 2068/2068 co-relation queries the response was YES. [2024-10-24 23:43:57,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8566 conditions, 3071 events. 1515/3071 cut-off events. For 2068/2068 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 22172 event pairs, 1091 based on Foata normal form. 82/2777 useless extension candidates. Maximal degree in co-relation 8486. Up to 2006 conditions per place. [2024-10-24 23:43:57,189 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 173 selfloop transitions, 8 changer transitions 2/201 dead transitions. [2024-10-24 23:43:57,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 201 transitions, 1529 flow [2024-10-24 23:43:57,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:43:57,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:43:57,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2024-10-24 23:43:57,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5811688311688312 [2024-10-24 23:43:57,191 INFO L175 Difference]: Start difference. First operand has 124 places, 170 transitions, 1033 flow. Second operand 4 states and 179 transitions. [2024-10-24 23:43:57,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 201 transitions, 1529 flow [2024-10-24 23:43:57,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 201 transitions, 1524 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:43:57,198 INFO L231 Difference]: Finished difference. Result has 126 places, 170 transitions, 1053 flow [2024-10-24 23:43:57,199 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1053, PETRI_PLACES=126, PETRI_TRANSITIONS=170} [2024-10-24 23:43:57,200 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 53 predicate places. [2024-10-24 23:43:57,200 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 170 transitions, 1053 flow [2024-10-24 23:43:57,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:57,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:57,200 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:57,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 23:43:57,200 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:43:57,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:57,201 INFO L85 PathProgramCache]: Analyzing trace with hash -371542488, now seen corresponding path program 1 times [2024-10-24 23:43:57,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:57,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770191684] [2024-10-24 23:43:57,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:57,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:57,295 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 23:43:57,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:57,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770191684] [2024-10-24 23:43:57,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770191684] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:57,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538600898] [2024-10-24 23:43:57,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:57,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:57,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:57,299 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:43:57,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 23:43:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:57,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 23:43:57,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 23:43:57,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:57,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 23:43:57,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538600898] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:57,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-24 23:43:57,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2024-10-24 23:43:57,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143220645] [2024-10-24 23:43:57,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:57,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:43:57,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:57,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:43:57,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:43:57,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-10-24 23:43:57,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 170 transitions, 1053 flow. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:57,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:57,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-10-24 23:43:57,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:57,895 INFO L124 PetriNetUnfolderBase]: 1513/3069 cut-off events. [2024-10-24 23:43:57,895 INFO L125 PetriNetUnfolderBase]: For 2295/2295 co-relation queries the response was YES. [2024-10-24 23:43:57,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8970 conditions, 3069 events. 1513/3069 cut-off events. For 2295/2295 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 21666 event pairs, 1091 based on Foata normal form. 2/2692 useless extension candidates. Maximal degree in co-relation 8887. Up to 2028 conditions per place. [2024-10-24 23:43:57,907 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 203 selfloop transitions, 23 changer transitions 4/248 dead transitions. [2024-10-24 23:43:57,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 248 transitions, 2044 flow [2024-10-24 23:43:57,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:43:57,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:43:57,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 208 transitions. [2024-10-24 23:43:57,908 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5402597402597402 [2024-10-24 23:43:57,908 INFO L175 Difference]: Start difference. First operand has 126 places, 170 transitions, 1053 flow. Second operand 5 states and 208 transitions. [2024-10-24 23:43:57,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 248 transitions, 2044 flow [2024-10-24 23:43:57,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 248 transitions, 2028 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:43:57,917 INFO L231 Difference]: Finished difference. Result has 128 places, 169 transitions, 1077 flow [2024-10-24 23:43:57,918 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1077, PETRI_PLACES=128, PETRI_TRANSITIONS=169} [2024-10-24 23:43:57,918 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 55 predicate places. [2024-10-24 23:43:57,918 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 169 transitions, 1077 flow [2024-10-24 23:43:57,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:57,918 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:57,918 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-24 23:43:57,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-24 23:43:58,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:58,123 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:43:58,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:58,123 INFO L85 PathProgramCache]: Analyzing trace with hash -856268684, now seen corresponding path program 1 times [2024-10-24 23:43:58,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:58,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196213495] [2024-10-24 23:43:58,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:58,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:58,292 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:58,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:58,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196213495] [2024-10-24 23:43:58,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196213495] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:58,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133444152] [2024-10-24 23:43:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:58,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:58,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:58,294 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:43:58,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 23:43:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:58,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 23:43:58,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:58,430 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:58,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:58,552 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:58,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133444152] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:58,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:58,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-10-24 23:43:58,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824785026] [2024-10-24 23:43:58,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:58,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 23:43:58,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:58,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 23:43:58,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-24 23:43:58,632 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-24 23:43:58,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 169 transitions, 1077 flow. Second operand has 28 states, 28 states have (on average 21.071428571428573) internal successors, (590), 28 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:58,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:58,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-24 23:43:58,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:59,382 INFO L124 PetriNetUnfolderBase]: 1702/3825 cut-off events. [2024-10-24 23:43:59,382 INFO L125 PetriNetUnfolderBase]: For 7137/7137 co-relation queries the response was YES. [2024-10-24 23:43:59,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11941 conditions, 3825 events. 1702/3825 cut-off events. For 7137/7137 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 27510 event pairs, 1091 based on Foata normal form. 182/3580 useless extension candidates. Maximal degree in co-relation 11852. Up to 2588 conditions per place. [2024-10-24 23:43:59,398 INFO L140 encePairwiseOnDemand]: 60/77 looper letters, 67 selfloop transitions, 206 changer transitions 0/288 dead transitions. [2024-10-24 23:43:59,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 288 transitions, 2561 flow [2024-10-24 23:43:59,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-24 23:43:59,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-24 23:43:59,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 728 transitions. [2024-10-24 23:43:59,402 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-10-24 23:43:59,402 INFO L175 Difference]: Start difference. First operand has 128 places, 169 transitions, 1077 flow. Second operand 26 states and 728 transitions. [2024-10-24 23:43:59,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 288 transitions, 2561 flow [2024-10-24 23:43:59,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 288 transitions, 2525 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:43:59,417 INFO L231 Difference]: Finished difference. Result has 158 places, 288 transitions, 2519 flow [2024-10-24 23:43:59,417 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2519, PETRI_PLACES=158, PETRI_TRANSITIONS=288} [2024-10-24 23:43:59,418 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 85 predicate places. [2024-10-24 23:43:59,418 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 288 transitions, 2519 flow [2024-10-24 23:43:59,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 21.071428571428573) internal successors, (590), 28 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:43:59,418 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:59,419 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:43:59,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 23:43:59,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-24 23:43:59,619 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:43:59,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:59,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1186021678, now seen corresponding path program 2 times [2024-10-24 23:43:59,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:59,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491865828] [2024-10-24 23:43:59,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:59,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:59,799 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-24 23:43:59,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:59,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491865828] [2024-10-24 23:43:59,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491865828] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:59,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139835125] [2024-10-24 23:43:59,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:43:59,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:59,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:59,802 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:43:59,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 23:43:59,905 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:43:59,905 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:43:59,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:43:59,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:59,939 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-24 23:43:59,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:43:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-24 23:43:59,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139835125] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:43:59,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:43:59,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 3, 3] total 12 [2024-10-24 23:43:59,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559123360] [2024-10-24 23:43:59,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:43:59,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:43:59,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:59,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:43:59,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:44:00,023 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 77 [2024-10-24 23:44:00,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 288 transitions, 2519 flow. Second operand has 12 states, 12 states have (on average 19.833333333333332) internal successors, (238), 12 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:44:00,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:00,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 77 [2024-10-24 23:44:00,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:01,006 INFO L124 PetriNetUnfolderBase]: 3011/6361 cut-off events. [2024-10-24 23:44:01,006 INFO L125 PetriNetUnfolderBase]: For 11300/11300 co-relation queries the response was YES. [2024-10-24 23:44:01,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21718 conditions, 6361 events. 3011/6361 cut-off events. For 11300/11300 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 49196 event pairs, 2000 based on Foata normal form. 4/5619 useless extension candidates. Maximal degree in co-relation 21636. Up to 2714 conditions per place. [2024-10-24 23:44:01,039 INFO L140 encePairwiseOnDemand]: 61/77 looper letters, 310 selfloop transitions, 135 changer transitions 0/459 dead transitions. [2024-10-24 23:44:01,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 459 transitions, 5045 flow [2024-10-24 23:44:01,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 23:44:01,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-24 23:44:01,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 383 transitions. [2024-10-24 23:44:01,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31087662337662336 [2024-10-24 23:44:01,041 INFO L175 Difference]: Start difference. First operand has 158 places, 288 transitions, 2519 flow. Second operand 16 states and 383 transitions. [2024-10-24 23:44:01,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 459 transitions, 5045 flow [2024-10-24 23:44:01,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 459 transitions, 3914 flow, removed 399 selfloop flow, removed 16 redundant places. [2024-10-24 23:44:01,087 INFO L231 Difference]: Finished difference. Result has 159 places, 362 transitions, 2817 flow [2024-10-24 23:44:01,087 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1836, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2817, PETRI_PLACES=159, PETRI_TRANSITIONS=362} [2024-10-24 23:44:01,087 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 86 predicate places. [2024-10-24 23:44:01,087 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 362 transitions, 2817 flow [2024-10-24 23:44:01,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.833333333333332) internal successors, (238), 12 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:44:01,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:01,088 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:44:01,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-24 23:44:01,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-24 23:44:01,288 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:44:01,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:01,289 INFO L85 PathProgramCache]: Analyzing trace with hash -380536387, now seen corresponding path program 1 times [2024-10-24 23:44:01,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:01,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912810182] [2024-10-24 23:44:01,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:01,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 23:44:01,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:01,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912810182] [2024-10-24 23:44:01,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912810182] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:44:01,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709341846] [2024-10-24 23:44:01,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:01,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:01,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:44:01,382 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:44:01,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 23:44:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:01,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:44:01,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:44:01,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 23:44:01,582 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:44:01,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709341846] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:44:01,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:44:01,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-10-24 23:44:01,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668896729] [2024-10-24 23:44:01,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:44:01,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:44:01,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:01,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:44:01,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:44:01,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-10-24 23:44:01,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 362 transitions, 2817 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:44:01,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:01,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-10-24 23:44:01,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:02,586 INFO L124 PetriNetUnfolderBase]: 4156/7775 cut-off events. [2024-10-24 23:44:02,587 INFO L125 PetriNetUnfolderBase]: For 10123/10309 co-relation queries the response was YES. [2024-10-24 23:44:02,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25189 conditions, 7775 events. 4156/7775 cut-off events. For 10123/10309 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 53768 event pairs, 924 based on Foata normal form. 3/6584 useless extension candidates. Maximal degree in co-relation 23568. Up to 3518 conditions per place. [2024-10-24 23:44:02,620 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 356 selfloop transitions, 7 changer transitions 0/380 dead transitions. [2024-10-24 23:44:02,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 380 transitions, 3609 flow [2024-10-24 23:44:02,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:44:02,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:44:02,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 172 transitions. [2024-10-24 23:44:02,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5584415584415584 [2024-10-24 23:44:02,621 INFO L175 Difference]: Start difference. First operand has 159 places, 362 transitions, 2817 flow. Second operand 4 states and 172 transitions. [2024-10-24 23:44:02,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 380 transitions, 3609 flow [2024-10-24 23:44:02,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 380 transitions, 3576 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-24 23:44:02,670 INFO L231 Difference]: Finished difference. Result has 160 places, 366 transitions, 2843 flow [2024-10-24 23:44:02,671 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2780, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2843, PETRI_PLACES=160, PETRI_TRANSITIONS=366} [2024-10-24 23:44:02,671 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 87 predicate places. [2024-10-24 23:44:02,672 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 366 transitions, 2843 flow [2024-10-24 23:44:02,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:44:02,672 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:02,672 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:44:02,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-24 23:44:02,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:02,873 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:44:02,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:02,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1006088569, now seen corresponding path program 1 times [2024-10-24 23:44:02,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:02,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944738376] [2024-10-24 23:44:02,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:02,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:44:03,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:03,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944738376] [2024-10-24 23:44:03,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944738376] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:44:03,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:44:03,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:44:03,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038466707] [2024-10-24 23:44:03,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:44:03,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:44:03,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:03,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:44:03,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 23:44:03,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-10-24 23:44:03,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 366 transitions, 2843 flow. Second operand has 6 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:44:03,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:03,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-10-24 23:44:03,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:04,673 INFO L124 PetriNetUnfolderBase]: 4990/10453 cut-off events. [2024-10-24 23:44:04,673 INFO L125 PetriNetUnfolderBase]: For 21552/21622 co-relation queries the response was YES. [2024-10-24 23:44:04,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36756 conditions, 10453 events. 4990/10453 cut-off events. For 21552/21622 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 82701 event pairs, 1242 based on Foata normal form. 100/9855 useless extension candidates. Maximal degree in co-relation 33891. Up to 4315 conditions per place. [2024-10-24 23:44:04,716 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 467 selfloop transitions, 35 changer transitions 18/537 dead transitions. [2024-10-24 23:44:04,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 537 transitions, 5213 flow [2024-10-24 23:44:04,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:44:04,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:44:04,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 245 transitions. [2024-10-24 23:44:04,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2024-10-24 23:44:04,718 INFO L175 Difference]: Start difference. First operand has 160 places, 366 transitions, 2843 flow. Second operand 6 states and 245 transitions. [2024-10-24 23:44:04,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 537 transitions, 5213 flow [2024-10-24 23:44:04,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 537 transitions, 5212 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:44:04,832 INFO L231 Difference]: Finished difference. Result has 166 places, 380 transitions, 3127 flow [2024-10-24 23:44:04,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2842, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3127, PETRI_PLACES=166, PETRI_TRANSITIONS=380} [2024-10-24 23:44:04,833 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 93 predicate places. [2024-10-24 23:44:04,833 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 380 transitions, 3127 flow [2024-10-24 23:44:04,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:44:04,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:04,834 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-10-24 23:44:04,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 23:44:04,834 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:44:04,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:04,835 INFO L85 PathProgramCache]: Analyzing trace with hash -868808028, now seen corresponding path program 2 times [2024-10-24 23:44:04,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:04,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223864949] [2024-10-24 23:44:04,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:04,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:04,985 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:44:04,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:04,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223864949] [2024-10-24 23:44:04,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223864949] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:44:04,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859982851] [2024-10-24 23:44:04,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:44:04,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:04,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:44:04,988 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:44:04,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-24 23:44:05,105 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:44:05,105 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:44:05,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:44:05,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:44:05,141 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-24 23:44:05,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:44:05,174 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-24 23:44:05,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859982851] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:44:05,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:44:05,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-10-24 23:44:05,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449106109] [2024-10-24 23:44:05,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:44:05,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 23:44:05,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:05,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 23:44:05,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-24 23:44:05,187 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-10-24 23:44:05,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 380 transitions, 3127 flow. Second operand has 15 states, 15 states have (on average 28.066666666666666) internal successors, (421), 15 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:44:05,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:05,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-10-24 23:44:05,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:06,652 INFO L124 PetriNetUnfolderBase]: 5118/11063 cut-off events. [2024-10-24 23:44:06,652 INFO L125 PetriNetUnfolderBase]: For 23887/23887 co-relation queries the response was YES. [2024-10-24 23:44:06,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39971 conditions, 11063 events. 5118/11063 cut-off events. For 23887/23887 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 89547 event pairs, 2518 based on Foata normal form. 24/10244 useless extension candidates. Maximal degree in co-relation 36602. Up to 6374 conditions per place. [2024-10-24 23:44:06,700 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 551 selfloop transitions, 120 changer transitions 0/687 dead transitions. [2024-10-24 23:44:06,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 687 transitions, 7096 flow [2024-10-24 23:44:06,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 23:44:06,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-24 23:44:06,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 463 transitions. [2024-10-24 23:44:06,704 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40086580086580087 [2024-10-24 23:44:06,704 INFO L175 Difference]: Start difference. First operand has 166 places, 380 transitions, 3127 flow. Second operand 15 states and 463 transitions. [2024-10-24 23:44:06,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 687 transitions, 7096 flow [2024-10-24 23:44:06,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 687 transitions, 7020 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-10-24 23:44:06,852 INFO L231 Difference]: Finished difference. Result has 174 places, 402 transitions, 3532 flow [2024-10-24 23:44:06,852 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3043, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3532, PETRI_PLACES=174, PETRI_TRANSITIONS=402} [2024-10-24 23:44:06,852 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 101 predicate places. [2024-10-24 23:44:06,853 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 402 transitions, 3532 flow [2024-10-24 23:44:06,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 28.066666666666666) internal successors, (421), 15 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:44:06,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:06,853 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:44:06,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-24 23:44:07,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-24 23:44:07,053 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:44:07,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:07,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1422050239, now seen corresponding path program 1 times [2024-10-24 23:44:07,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:07,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625437037] [2024-10-24 23:44:07,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:07,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:07,122 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 23:44:07,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:07,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625437037] [2024-10-24 23:44:07,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625437037] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:44:07,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151795623] [2024-10-24 23:44:07,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:07,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:07,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:44:07,124 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:44:07,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-24 23:44:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:07,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:44:07,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:44:07,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 23:44:07,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:44:07,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 23:44:07,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151795623] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:44:07,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:44:07,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-10-24 23:44:07,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052614428] [2024-10-24 23:44:07,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:44:07,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 23:44:07,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:07,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 23:44:07,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-24 23:44:07,310 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-10-24 23:44:07,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 402 transitions, 3532 flow. Second operand has 7 states, 7 states have (on average 35.714285714285715) internal successors, (250), 7 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:44:07,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:07,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-10-24 23:44:07,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:10,174 INFO L124 PetriNetUnfolderBase]: 10830/19743 cut-off events. [2024-10-24 23:44:10,174 INFO L125 PetriNetUnfolderBase]: For 42899/43485 co-relation queries the response was YES. [2024-10-24 23:44:10,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67596 conditions, 19743 events. 10830/19743 cut-off events. For 42899/43485 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 155838 event pairs, 1584 based on Foata normal form. 274/19269 useless extension candidates. Maximal degree in co-relation 64158. Up to 5930 conditions per place. [2024-10-24 23:44:10,274 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 444 selfloop transitions, 9 changer transitions 2/471 dead transitions. [2024-10-24 23:44:10,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 471 transitions, 4724 flow [2024-10-24 23:44:10,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:44:10,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:44:10,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 283 transitions. [2024-10-24 23:44:10,275 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6125541125541125 [2024-10-24 23:44:10,275 INFO L175 Difference]: Start difference. First operand has 174 places, 402 transitions, 3532 flow. Second operand 6 states and 283 transitions. [2024-10-24 23:44:10,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 471 transitions, 4724 flow [2024-10-24 23:44:10,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 471 transitions, 4406 flow, removed 37 selfloop flow, removed 11 redundant places. [2024-10-24 23:44:10,392 INFO L231 Difference]: Finished difference. Result has 172 places, 409 transitions, 3334 flow [2024-10-24 23:44:10,392 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3214, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3334, PETRI_PLACES=172, PETRI_TRANSITIONS=409} [2024-10-24 23:44:10,393 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 99 predicate places. [2024-10-24 23:44:10,393 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 409 transitions, 3334 flow [2024-10-24 23:44:10,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.714285714285715) internal successors, (250), 7 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:44:10,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:10,393 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:44:10,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-24 23:44:10,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-24 23:44:10,594 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:44:10,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:10,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1422050246, now seen corresponding path program 1 times [2024-10-24 23:44:10,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:10,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572733693] [2024-10-24 23:44:10,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:10,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:10,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 23:44:10,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:10,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572733693] [2024-10-24 23:44:10,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572733693] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:44:10,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731890486] [2024-10-24 23:44:10,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:10,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:10,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:44:10,662 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:44:10,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-24 23:44:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:10,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:44:10,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:44:10,841 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 23:44:10,841 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:44:10,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731890486] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:44:10,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:44:10,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-10-24 23:44:10,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469791510] [2024-10-24 23:44:10,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:44:10,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:44:10,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:10,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:44:10,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 23:44:10,846 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-10-24 23:44:10,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 409 transitions, 3334 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:44:10,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:10,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-10-24 23:44:10,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:12,937 INFO L124 PetriNetUnfolderBase]: 9512/17687 cut-off events. [2024-10-24 23:44:12,937 INFO L125 PetriNetUnfolderBase]: For 55517/56960 co-relation queries the response was YES. [2024-10-24 23:44:12,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63434 conditions, 17687 events. 9512/17687 cut-off events. For 55517/56960 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 138803 event pairs, 1988 based on Foata normal form. 868/18133 useless extension candidates. Maximal degree in co-relation 60125. Up to 7880 conditions per place. [2024-10-24 23:44:13,020 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 394 selfloop transitions, 11 changer transitions 0/421 dead transitions. [2024-10-24 23:44:13,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 421 transitions, 4180 flow [2024-10-24 23:44:13,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:44:13,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:44:13,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2024-10-24 23:44:13,021 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.551948051948052 [2024-10-24 23:44:13,021 INFO L175 Difference]: Start difference. First operand has 172 places, 409 transitions, 3334 flow. Second operand 4 states and 170 transitions. [2024-10-24 23:44:13,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 421 transitions, 4180 flow [2024-10-24 23:44:13,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 421 transitions, 4160 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-10-24 23:44:13,146 INFO L231 Difference]: Finished difference. Result has 174 places, 408 transitions, 3332 flow [2024-10-24 23:44:13,146 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3310, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3332, PETRI_PLACES=174, PETRI_TRANSITIONS=408} [2024-10-24 23:44:13,146 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 101 predicate places. [2024-10-24 23:44:13,147 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 408 transitions, 3332 flow [2024-10-24 23:44:13,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:44:13,147 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:13,147 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:44:13,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-24 23:44:13,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-24 23:44:13,347 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:44:13,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:13,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1422050245, now seen corresponding path program 1 times [2024-10-24 23:44:13,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:13,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281716491] [2024-10-24 23:44:13,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:13,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:13,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 23:44:13,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:13,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281716491] [2024-10-24 23:44:13,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281716491] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:44:13,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4603955] [2024-10-24 23:44:13,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:13,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:13,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:44:13,518 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:44:13,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-24 23:44:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:13,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:44:13,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:44:13,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 23:44:13,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:44:13,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 23:44:13,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4603955] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:44:13,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:44:13,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2024-10-24 23:44:13,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048529790] [2024-10-24 23:44:13,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:44:13,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 23:44:13,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:13,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 23:44:13,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:44:13,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-24 23:44:13,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 408 transitions, 3332 flow. Second operand has 9 states, 9 states have (on average 24.22222222222222) internal successors, (218), 9 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:44:13,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:13,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-24 23:44:13,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:17,678 INFO L124 PetriNetUnfolderBase]: 12068/24127 cut-off events. [2024-10-24 23:44:17,678 INFO L125 PetriNetUnfolderBase]: For 86058/87117 co-relation queries the response was YES. [2024-10-24 23:44:17,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81776 conditions, 24127 events. 12068/24127 cut-off events. For 86058/87117 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 212711 event pairs, 4516 based on Foata normal form. 2974/26816 useless extension candidates. Maximal degree in co-relation 76886. Up to 9236 conditions per place. [2024-10-24 23:44:17,798 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 480 selfloop transitions, 112 changer transitions 6/611 dead transitions. [2024-10-24 23:44:17,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 611 transitions, 6090 flow [2024-10-24 23:44:17,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 23:44:17,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 23:44:17,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 269 transitions. [2024-10-24 23:44:17,799 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38816738816738816 [2024-10-24 23:44:17,799 INFO L175 Difference]: Start difference. First operand has 174 places, 408 transitions, 3332 flow. Second operand 9 states and 269 transitions. [2024-10-24 23:44:17,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 611 transitions, 6090 flow [2024-10-24 23:44:18,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 611 transitions, 6045 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-24 23:44:18,035 INFO L231 Difference]: Finished difference. Result has 177 places, 468 transitions, 4412 flow [2024-10-24 23:44:18,035 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3256, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4412, PETRI_PLACES=177, PETRI_TRANSITIONS=468} [2024-10-24 23:44:18,035 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 104 predicate places. [2024-10-24 23:44:18,035 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 468 transitions, 4412 flow [2024-10-24 23:44:18,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.22222222222222) internal successors, (218), 9 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:44:18,035 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:18,036 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:44:18,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-24 23:44:18,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:18,236 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:44:18,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:18,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1301440830, now seen corresponding path program 2 times [2024-10-24 23:44:18,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:18,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374459130] [2024-10-24 23:44:18,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:18,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:18,364 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 23:44:18,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:18,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374459130] [2024-10-24 23:44:18,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374459130] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:44:18,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000969151] [2024-10-24 23:44:18,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:44:18,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:18,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:44:18,367 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:44:18,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-24 23:44:18,515 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 23:44:18,515 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:44:18,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 23:44:18,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:44:18,551 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 23:44:18,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:44:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 23:44:18,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000969151] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:44:18,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:44:18,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-24 23:44:18,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524819279] [2024-10-24 23:44:18,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:44:18,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 23:44:18,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:18,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 23:44:18,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-24 23:44:18,637 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-10-24 23:44:18,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 468 transitions, 4412 flow. Second operand has 13 states, 13 states have (on average 33.53846153846154) internal successors, (436), 13 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:44:18,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:18,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-10-24 23:44:18,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:24,098 INFO L124 PetriNetUnfolderBase]: 22638/41015 cut-off events. [2024-10-24 23:44:24,099 INFO L125 PetriNetUnfolderBase]: For 133225/134025 co-relation queries the response was YES. [2024-10-24 23:44:24,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139121 conditions, 41015 events. 22638/41015 cut-off events. For 133225/134025 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 347833 event pairs, 1714 based on Foata normal form. 2206/42673 useless extension candidates. Maximal degree in co-relation 133624. Up to 8074 conditions per place. [2024-10-24 23:44:24,831 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 544 selfloop transitions, 47 changer transitions 0/607 dead transitions. [2024-10-24 23:44:24,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 607 transitions, 6274 flow [2024-10-24 23:44:24,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 23:44:24,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 23:44:24,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 499 transitions. [2024-10-24 23:44:24,833 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54004329004329 [2024-10-24 23:44:24,833 INFO L175 Difference]: Start difference. First operand has 177 places, 468 transitions, 4412 flow. Second operand 12 states and 499 transitions. [2024-10-24 23:44:24,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 607 transitions, 6274 flow [2024-10-24 23:44:25,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 607 transitions, 6210 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-10-24 23:44:25,445 INFO L231 Difference]: Finished difference. Result has 193 places, 507 transitions, 4950 flow [2024-10-24 23:44:25,445 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=4348, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4950, PETRI_PLACES=193, PETRI_TRANSITIONS=507} [2024-10-24 23:44:25,445 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 120 predicate places. [2024-10-24 23:44:25,446 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 507 transitions, 4950 flow [2024-10-24 23:44:25,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 33.53846153846154) internal successors, (436), 13 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:44:25,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:25,446 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 1, 1, 1] [2024-10-24 23:44:25,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-24 23:44:25,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:25,646 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:44:25,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:25,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1634458378, now seen corresponding path program 2 times [2024-10-24 23:44:25,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:25,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341589014] [2024-10-24 23:44:25,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:25,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:26,039 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:44:26,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:26,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341589014] [2024-10-24 23:44:26,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341589014] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:44:26,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724068529] [2024-10-24 23:44:26,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:44:26,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:26,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:44:26,041 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:44:26,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-24 23:44:26,162 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:44:26,162 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:44:26,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:44:26,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:44:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-10-24 23:44:26,228 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:44:26,283 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-10-24 23:44:26,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724068529] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:44:26,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:44:26,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 3, 3] total 30 [2024-10-24 23:44:26,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749650777] [2024-10-24 23:44:26,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:44:26,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-24 23:44:26,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:26,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-24 23:44:26,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2024-10-24 23:44:26,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-24 23:44:26,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 507 transitions, 4950 flow. Second operand has 31 states, 31 states have (on average 21.096774193548388) internal successors, (654), 31 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:44:26,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:26,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-24 23:44:26,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:34,860 INFO L124 PetriNetUnfolderBase]: 22695/41753 cut-off events. [2024-10-24 23:44:34,860 INFO L125 PetriNetUnfolderBase]: For 191720/192808 co-relation queries the response was YES. [2024-10-24 23:44:35,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155339 conditions, 41753 events. 22695/41753 cut-off events. For 191720/192808 co-relation queries the response was YES. Maximal size of possible extension queue 815. Compared 358714 event pairs, 13482 based on Foata normal form. 406/41851 useless extension candidates. Maximal degree in co-relation 147474. Up to 32396 conditions per place. [2024-10-24 23:44:35,216 INFO L140 encePairwiseOnDemand]: 60/77 looper letters, 121 selfloop transitions, 399 changer transitions 0/533 dead transitions. [2024-10-24 23:44:35,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 533 transitions, 6205 flow [2024-10-24 23:44:35,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-10-24 23:44:35,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-10-24 23:44:35,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 1335 transitions. [2024-10-24 23:44:35,219 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3041695146958305 [2024-10-24 23:44:35,219 INFO L175 Difference]: Start difference. First operand has 193 places, 507 transitions, 4950 flow. Second operand 57 states and 1335 transitions. [2024-10-24 23:44:35,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 533 transitions, 6205 flow [2024-10-24 23:44:36,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 533 transitions, 6103 flow, removed 51 selfloop flow, removed 0 redundant places. [2024-10-24 23:44:36,035 INFO L231 Difference]: Finished difference. Result has 250 places, 533 transitions, 5940 flow [2024-10-24 23:44:36,036 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=4822, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=372, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=5940, PETRI_PLACES=250, PETRI_TRANSITIONS=533} [2024-10-24 23:44:36,036 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 177 predicate places. [2024-10-24 23:44:36,036 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 533 transitions, 5940 flow [2024-10-24 23:44:36,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 21.096774193548388) internal successors, (654), 31 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:44:36,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:36,036 INFO L204 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 1, 1, 1, 1] [2024-10-24 23:44:36,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-24 23:44:36,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-24 23:44:36,237 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-24 23:44:36,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:36,237 INFO L85 PathProgramCache]: Analyzing trace with hash -821472769, now seen corresponding path program 1 times [2024-10-24 23:44:36,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:36,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754187966] [2024-10-24 23:44:36,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:36,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:36,705 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:44:36,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:36,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754187966] [2024-10-24 23:44:36,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754187966] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:44:36,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312169546] [2024-10-24 23:44:36,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:36,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:36,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:44:36,707 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:44:36,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-24 23:44:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:36,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-24 23:44:36,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:44:36,913 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:44:36,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:44:37,452 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:44:37,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312169546] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:44:37,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:44:37,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 59 [2024-10-24 23:44:37,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880649033] [2024-10-24 23:44:37,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:44:37,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-10-24 23:44:37,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:37,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-10-24 23:44:37,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2024-10-24 23:44:37,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-24 23:44:37,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 533 transitions, 5940 flow. Second operand has 60 states, 60 states have (on average 21.05) internal successors, (1263), 60 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:44:37,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:37,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-24 23:44:37,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand