./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-pthread.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e78822126ecf610a8f2b081cd67f0280b0032e707126b95c500c0e8fa18b6e03 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 23:47:50,031 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 23:47:50,086 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 23:47:50,091 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 23:47:50,092 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 23:47:50,109 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 23:47:50,110 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 23:47:50,111 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 23:47:50,111 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 23:47:50,112 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 23:47:50,112 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 23:47:50,113 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 23:47:50,113 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 23:47:50,115 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 23:47:50,115 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 23:47:50,115 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 23:47:50,115 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 23:47:50,116 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 23:47:50,116 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 23:47:50,116 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 23:47:50,116 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 23:47:50,119 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 23:47:50,119 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 23:47:50,120 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 23:47:50,120 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 23:47:50,120 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 23:47:50,120 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 23:47:50,120 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 23:47:50,121 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 23:47:50,121 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 23:47:50,121 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 23:47:50,121 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 23:47:50,121 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 23:47:50,121 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 23:47:50,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:47:50,122 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 23:47:50,122 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 23:47:50,122 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 23:47:50,122 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 23:47:50,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 23:47:50,123 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 23:47:50,123 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 23:47:50,123 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 23:47:50,124 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 23:47:50,124 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e78822126ecf610a8f2b081cd67f0280b0032e707126b95c500c0e8fa18b6e03 [2024-10-11 23:47:50,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 23:47:50,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 23:47:50,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 23:47:50,343 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 23:47:50,343 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 23:47:50,344 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-pthread.i [2024-10-11 23:47:51,534 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 23:47:51,737 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 23:47:51,738 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-pthread.i [2024-10-11 23:47:51,752 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/a77198532/3794c020b1cb4e5d8846f11a12b4d2bd/FLAGc0aaa3e94 [2024-10-11 23:47:51,766 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/a77198532/3794c020b1cb4e5d8846f11a12b4d2bd [2024-10-11 23:47:51,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 23:47:51,769 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 23:47:51,771 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 23:47:51,771 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 23:47:51,775 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 23:47:51,775 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:47:51" (1/1) ... [2024-10-11 23:47:51,776 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48615a4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:51, skipping insertion in model container [2024-10-11 23:47:51,776 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:47:51" (1/1) ... [2024-10-11 23:47:51,813 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 23:47:52,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:47:52,116 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 23:47:52,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:47:52,178 INFO L204 MainTranslator]: Completed translation [2024-10-11 23:47:52,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:52 WrapperNode [2024-10-11 23:47:52,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 23:47:52,179 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 23:47:52,179 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 23:47:52,179 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 23:47:52,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:52" (1/1) ... [2024-10-11 23:47:52,196 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:52" (1/1) ... [2024-10-11 23:47:52,211 INFO L138 Inliner]: procedures = 164, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 99 [2024-10-11 23:47:52,211 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 23:47:52,212 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 23:47:52,212 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 23:47:52,212 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 23:47:52,219 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:52" (1/1) ... [2024-10-11 23:47:52,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:52" (1/1) ... [2024-10-11 23:47:52,222 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:52" (1/1) ... [2024-10-11 23:47:52,232 INFO L175 MemorySlicer]: Split 15 memory accesses to 3 slices as follows [2, 5, 8]. 53 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 6]. The 1 writes are split as follows [0, 0, 1]. [2024-10-11 23:47:52,235 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:52" (1/1) ... [2024-10-11 23:47:52,235 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:52" (1/1) ... [2024-10-11 23:47:52,243 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:52" (1/1) ... [2024-10-11 23:47:52,245 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:52" (1/1) ... [2024-10-11 23:47:52,246 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:52" (1/1) ... [2024-10-11 23:47:52,248 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:52" (1/1) ... [2024-10-11 23:47:52,253 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 23:47:52,253 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 23:47:52,253 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 23:47:52,254 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 23:47:52,254 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:52" (1/1) ... [2024-10-11 23:47:52,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:47:52,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:52,284 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 23:47:52,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 23:47:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 23:47:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 23:47:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 23:47:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-11 23:47:52,322 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-11 23:47:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 23:47:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 23:47:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 23:47:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 23:47:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 23:47:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 23:47:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 23:47:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 23:47:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 23:47:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 23:47:52,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 23:47:52,323 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 23:47:52,419 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 23:47:52,420 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 23:47:52,553 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 23:47:52,553 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 23:47:52,659 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 23:47:52,659 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 23:47:52,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:47:52 BoogieIcfgContainer [2024-10-11 23:47:52,659 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 23:47:52,662 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 23:47:52,662 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 23:47:52,665 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 23:47:52,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 11:47:51" (1/3) ... [2024-10-11 23:47:52,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d9b76d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:47:52, skipping insertion in model container [2024-10-11 23:47:52,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:47:52" (2/3) ... [2024-10-11 23:47:52,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d9b76d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:47:52, skipping insertion in model container [2024-10-11 23:47:52,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:47:52" (3/3) ... [2024-10-11 23:47:52,668 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym-pthread.i [2024-10-11 23:47:52,681 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 23:47:52,681 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-11 23:47:52,682 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 23:47:52,717 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 23:47:52,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 33 transitions, 70 flow [2024-10-11 23:47:52,776 INFO L124 PetriNetUnfolderBase]: 3/35 cut-off events. [2024-10-11 23:47:52,776 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:47:52,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 35 events. 3/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 45 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-10-11 23:47:52,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 33 transitions, 70 flow [2024-10-11 23:47:52,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 33 transitions, 70 flow [2024-10-11 23:47:52,792 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:47:52,799 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;@68d2a2aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:47:52,801 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-10-11 23:47:52,803 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:47:52,807 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-11 23:47:52,807 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:47:52,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:52,807 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 23:47:52,808 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-11 23:47:52,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:52,812 INFO L85 PathProgramCache]: Analyzing trace with hash 302535, now seen corresponding path program 1 times [2024-10-11 23:47:52,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:52,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573411520] [2024-10-11 23:47:52,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:52,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:53,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:53,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:53,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573411520] [2024-10-11 23:47:53,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573411520] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:53,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:53,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:47:53,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227964213] [2024-10-11 23:47:53,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:53,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:47:53,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:53,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:47:53,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:47:53,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-10-11 23:47:53,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-10-11 23:47:53,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:53,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-10-11 23:47:53,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:53,239 INFO L124 PetriNetUnfolderBase]: 24/88 cut-off events. [2024-10-11 23:47:53,241 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:47:53,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 88 events. 24/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 185 event pairs, 20 based on Foata normal form. 4/81 useless extension candidates. Maximal degree in co-relation 127. Up to 64 conditions per place. [2024-10-11 23:47:53,243 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 19 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2024-10-11 23:47:53,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 114 flow [2024-10-11 23:47:53,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:47:53,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:47:53,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-10-11 23:47:53,252 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5378787878787878 [2024-10-11 23:47:53,254 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 70 flow. Second operand 4 states and 71 transitions. [2024-10-11 23:47:53,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 114 flow [2024-10-11 23:47:53,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 114 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:47:53,257 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 90 flow [2024-10-11 23:47:53,258 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2024-10-11 23:47:53,261 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2024-10-11 23:47:53,261 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 90 flow [2024-10-11 23:47:53,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-10-11 23:47:53,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:53,261 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-11 23:47:53,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 23:47:53,262 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-11 23:47:53,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:53,262 INFO L85 PathProgramCache]: Analyzing trace with hash 423187167, now seen corresponding path program 1 times [2024-10-11 23:47:53,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:53,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535816771] [2024-10-11 23:47:53,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:53,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:53,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:53,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535816771] [2024-10-11 23:47:53,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535816771] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:53,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393854986] [2024-10-11 23:47:53,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:53,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:53,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:53,377 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:53,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 23:47:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:53,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:47:53,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:53,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:53,472 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:47:53,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393854986] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:53,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:47:53,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-11 23:47:53,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824279112] [2024-10-11 23:47:53,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:53,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:47:53,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:53,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:47:53,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:47:53,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-10-11 23:47:53,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 90 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2024-10-11 23:47:53,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:53,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-10-11 23:47:53,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:53,560 INFO L124 PetriNetUnfolderBase]: 24/87 cut-off events. [2024-10-11 23:47:53,561 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 23:47:53,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 87 events. 24/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 187 event pairs, 20 based on Foata normal form. 1/77 useless extension candidates. Maximal degree in co-relation 150. Up to 59 conditions per place. [2024-10-11 23:47:53,563 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 15 selfloop transitions, 6 changer transitions 0/32 dead transitions. [2024-10-11 23:47:53,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 128 flow [2024-10-11 23:47:53,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:47:53,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:47:53,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-10-11 23:47:53,565 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-10-11 23:47:53,566 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 90 flow. Second operand 6 states and 88 transitions. [2024-10-11 23:47:53,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 128 flow [2024-10-11 23:47:53,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:47:53,567 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 96 flow [2024-10-11 23:47:53,567 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-10-11 23:47:53,568 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-10-11 23:47:53,568 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 96 flow [2024-10-11 23:47:53,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2024-10-11 23:47:53,570 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:53,570 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-11 23:47:53,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 23:47:53,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:53,776 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-11 23:47:53,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:53,776 INFO L85 PathProgramCache]: Analyzing trace with hash 233900593, now seen corresponding path program 1 times [2024-10-11 23:47:53,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:53,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020700544] [2024-10-11 23:47:53,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:53,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:53,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:47:53,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:53,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020700544] [2024-10-11 23:47:53,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020700544] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:53,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:53,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:47:53,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595260258] [2024-10-11 23:47:53,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:53,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:47:53,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:53,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:47:53,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:47:53,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-10-11 23:47:53,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-10-11 23:47:53,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:53,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-10-11 23:47:53,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:53,877 INFO L124 PetriNetUnfolderBase]: 24/86 cut-off events. [2024-10-11 23:47:53,877 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-11 23:47:53,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 86 events. 24/86 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 187 event pairs, 20 based on Foata normal form. 1/77 useless extension candidates. Maximal degree in co-relation 146. Up to 62 conditions per place. [2024-10-11 23:47:53,879 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 16 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2024-10-11 23:47:53,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 132 flow [2024-10-11 23:47:53,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:47:53,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:47:53,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-10-11 23:47:53,882 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2024-10-11 23:47:53,882 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 96 flow. Second operand 3 states and 52 transitions. [2024-10-11 23:47:53,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 31 transitions, 132 flow [2024-10-11 23:47:53,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 110 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-11 23:47:53,883 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 78 flow [2024-10-11 23:47:53,884 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2024-10-11 23:47:53,884 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-10-11 23:47:53,884 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 78 flow [2024-10-11 23:47:53,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-10-11 23:47:53,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:53,885 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:53,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 23:47:53,885 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-11 23:47:53,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:53,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1441491304, now seen corresponding path program 1 times [2024-10-11 23:47:53,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:53,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068020814] [2024-10-11 23:47:53,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:53,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:53,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:53,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:53,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068020814] [2024-10-11 23:47:53,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068020814] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:53,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221867703] [2024-10-11 23:47:53,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:53,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:53,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:53,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:53,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 23:47:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:54,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:47:54,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:54,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:54,038 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:47:54,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:54,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221867703] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:47:54,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:47:54,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-11 23:47:54,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039255671] [2024-10-11 23:47:54,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:47:54,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 23:47:54,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:54,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 23:47:54,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 23:47:54,080 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-10-11 23:47:54,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 78 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 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) [2024-10-11 23:47:54,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:54,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-10-11 23:47:54,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:54,152 INFO L124 PetriNetUnfolderBase]: 24/90 cut-off events. [2024-10-11 23:47:54,153 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-11 23:47:54,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 90 events. 24/90 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 182 event pairs, 20 based on Foata normal form. 2/83 useless extension candidates. Maximal degree in co-relation 139. Up to 60 conditions per place. [2024-10-11 23:47:54,154 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 16 selfloop transitions, 7 changer transitions 0/34 dead transitions. [2024-10-11 23:47:54,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 139 flow [2024-10-11 23:47:54,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:47:54,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:47:54,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2024-10-11 23:47:54,156 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-10-11 23:47:54,156 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 78 flow. Second operand 7 states and 102 transitions. [2024-10-11 23:47:54,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 139 flow [2024-10-11 23:47:54,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 125 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:47:54,157 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 104 flow [2024-10-11 23:47:54,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=104, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-10-11 23:47:54,158 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2024-10-11 23:47:54,158 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 104 flow [2024-10-11 23:47:54,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 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) [2024-10-11 23:47:54,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:54,159 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:54,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 23:47:54,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:54,367 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-11 23:47:54,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:54,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1254322792, now seen corresponding path program 2 times [2024-10-11 23:47:54,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:54,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460657914] [2024-10-11 23:47:54,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:54,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:54,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 23:47:54,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:54,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460657914] [2024-10-11 23:47:54,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460657914] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:54,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:54,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:47:54,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231924975] [2024-10-11 23:47:54,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:54,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:47:54,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:54,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:47:54,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:47:54,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-10-11 23:47:54,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-10-11 23:47:54,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:54,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-10-11 23:47:54,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:54,491 INFO L124 PetriNetUnfolderBase]: 26/97 cut-off events. [2024-10-11 23:47:54,492 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-11 23:47:54,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 97 events. 26/97 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 199 event pairs, 2 based on Foata normal form. 3/97 useless extension candidates. Maximal degree in co-relation 153. Up to 53 conditions per place. [2024-10-11 23:47:54,492 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 24 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2024-10-11 23:47:54,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 158 flow [2024-10-11 23:47:54,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:47:54,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:47:54,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-10-11 23:47:54,493 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-10-11 23:47:54,493 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 104 flow. Second operand 3 states and 55 transitions. [2024-10-11 23:47:54,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 158 flow [2024-10-11 23:47:54,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 154 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:47:54,495 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 102 flow [2024-10-11 23:47:54,495 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2024-10-11 23:47:54,495 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-10-11 23:47:54,496 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 102 flow [2024-10-11 23:47:54,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-10-11 23:47:54,496 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:54,496 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1] [2024-10-11 23:47:54,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 23:47:54,496 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-11 23:47:54,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:54,497 INFO L85 PathProgramCache]: Analyzing trace with hash 229275648, now seen corresponding path program 1 times [2024-10-11 23:47:54,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:54,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222126586] [2024-10-11 23:47:54,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:54,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:47:54,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:54,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222126586] [2024-10-11 23:47:54,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222126586] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:54,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761400838] [2024-10-11 23:47:54,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:54,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:54,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:54,592 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:54,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 23:47:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:54,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 23:47:54,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:47:54,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:47:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:47:54,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761400838] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:47:54,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:47:54,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-11 23:47:54,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474774866] [2024-10-11 23:47:54,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:47:54,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 23:47:54,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:54,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 23:47:54,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-11 23:47:54,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-10-11 23:47:54,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 102 flow. Second operand has 15 states, 15 states have (on average 12.333333333333334) internal successors, (185), 15 states have internal predecessors, (185), 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) [2024-10-11 23:47:54,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:54,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-10-11 23:47:54,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:54,866 INFO L124 PetriNetUnfolderBase]: 24/98 cut-off events. [2024-10-11 23:47:54,867 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-10-11 23:47:54,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 98 events. 24/98 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 175 event pairs, 20 based on Foata normal form. 3/93 useless extension candidates. Maximal degree in co-relation 146. Up to 60 conditions per place. [2024-10-11 23:47:54,867 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 16 selfloop transitions, 13 changer transitions 0/39 dead transitions. [2024-10-11 23:47:54,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 39 transitions, 196 flow [2024-10-11 23:47:54,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 23:47:54,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 23:47:54,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 175 transitions. [2024-10-11 23:47:54,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40792540792540793 [2024-10-11 23:47:54,869 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 102 flow. Second operand 13 states and 175 transitions. [2024-10-11 23:47:54,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 39 transitions, 196 flow [2024-10-11 23:47:54,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 39 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:47:54,870 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 175 flow [2024-10-11 23:47:54,870 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=175, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2024-10-11 23:47:54,871 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2024-10-11 23:47:54,871 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 175 flow [2024-10-11 23:47:54,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.333333333333334) internal successors, (185), 15 states have internal predecessors, (185), 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) [2024-10-11 23:47:54,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:54,871 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1] [2024-10-11 23:47:54,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 23:47:55,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:55,072 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-11 23:47:55,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:55,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1450152680, now seen corresponding path program 2 times [2024-10-11 23:47:55,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:55,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611540464] [2024-10-11 23:47:55,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:55,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:55,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:47:55,088 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 23:47:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:47:55,113 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 23:47:55,113 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 23:47:55,114 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-10-11 23:47:55,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-10-11 23:47:55,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-10-11 23:47:55,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-10-11 23:47:55,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2024-10-11 23:47:55,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2024-10-11 23:47:55,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2024-10-11 23:47:55,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-10-11 23:47:55,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-10-11 23:47:55,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-10-11 23:47:55,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-10-11 23:47:55,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 23:47:55,117 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-10-11 23:47:55,118 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 23:47:55,118 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 23:47:55,134 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 23:47:55,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 55 transitions, 120 flow [2024-10-11 23:47:55,139 INFO L124 PetriNetUnfolderBase]: 5/60 cut-off events. [2024-10-11 23:47:55,140 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 23:47:55,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 60 events. 5/60 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 113 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 45. Up to 3 conditions per place. [2024-10-11 23:47:55,140 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 55 transitions, 120 flow [2024-10-11 23:47:55,140 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 55 transitions, 120 flow [2024-10-11 23:47:55,141 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:47:55,142 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;@68d2a2aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:47:55,142 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-10-11 23:47:55,142 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:47:55,142 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-11 23:47:55,142 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:47:55,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:55,146 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 23:47:55,146 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:47:55,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:55,146 INFO L85 PathProgramCache]: Analyzing trace with hash 357150, now seen corresponding path program 1 times [2024-10-11 23:47:55,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:55,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868985114] [2024-10-11 23:47:55,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:55,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:55,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:55,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:55,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868985114] [2024-10-11 23:47:55,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868985114] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:55,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:55,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:47:55,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803661940] [2024-10-11 23:47:55,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:55,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:47:55,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:55,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:47:55,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:47:55,181 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-11 23:47:55,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 120 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) [2024-10-11 23:47:55,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:55,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-11 23:47:55,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:55,334 INFO L124 PetriNetUnfolderBase]: 640/1334 cut-off events. [2024-10-11 23:47:55,334 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-10-11 23:47:55,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2417 conditions, 1334 events. 640/1334 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7514 event pairs, 570 based on Foata normal form. 70/1293 useless extension candidates. Maximal degree in co-relation 1594. Up to 1043 conditions per place. [2024-10-11 23:47:55,345 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 31 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2024-10-11 23:47:55,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 186 flow [2024-10-11 23:47:55,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:47:55,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:47:55,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-10-11 23:47:55,347 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-10-11 23:47:55,347 INFO L175 Difference]: Start difference. First operand has 55 places, 55 transitions, 120 flow. Second operand 4 states and 120 transitions. [2024-10-11 23:47:55,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 186 flow [2024-10-11 23:47:55,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 186 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:47:55,349 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 138 flow [2024-10-11 23:47:55,349 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-10-11 23:47:55,350 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2024-10-11 23:47:55,350 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 138 flow [2024-10-11 23:47:55,350 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) [2024-10-11 23:47:55,351 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:55,351 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-11 23:47:55,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 23:47:55,351 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:47:55,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:55,351 INFO L85 PathProgramCache]: Analyzing trace with hash 2050277247, now seen corresponding path program 1 times [2024-10-11 23:47:55,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:55,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782658583] [2024-10-11 23:47:55,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:55,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:55,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:55,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:55,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782658583] [2024-10-11 23:47:55,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782658583] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:55,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646336469] [2024-10-11 23:47:55,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:55,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:55,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:55,404 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:55,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 23:47:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:55,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:47:55,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:55,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:55,476 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:47:55,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646336469] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:55,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:47:55,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-11 23:47:55,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266797718] [2024-10-11 23:47:55,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:55,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:47:55,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:55,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:47:55,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:47:55,483 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-11 23:47:55,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 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) [2024-10-11 23:47:55,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:55,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-11 23:47:55,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:55,632 INFO L124 PetriNetUnfolderBase]: 640/1333 cut-off events. [2024-10-11 23:47:55,633 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-10-11 23:47:55,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2427 conditions, 1333 events. 640/1333 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7536 event pairs, 570 based on Foata normal form. 1/1223 useless extension candidates. Maximal degree in co-relation 2408. Up to 1038 conditions per place. [2024-10-11 23:47:55,639 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 27 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2024-10-11 23:47:55,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 200 flow [2024-10-11 23:47:55,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:47:55,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:47:55,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-10-11 23:47:55,640 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-10-11 23:47:55,640 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 138 flow. Second operand 6 states and 154 transitions. [2024-10-11 23:47:55,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 200 flow [2024-10-11 23:47:55,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 53 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:47:55,641 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 144 flow [2024-10-11 23:47:55,641 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2024-10-11 23:47:55,642 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-10-11 23:47:55,642 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 144 flow [2024-10-11 23:47:55,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 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) [2024-10-11 23:47:55,642 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:55,642 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-11 23:47:55,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 23:47:55,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 23:47:55,847 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:47:55,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:55,847 INFO L85 PathProgramCache]: Analyzing trace with hash -865914424, now seen corresponding path program 1 times [2024-10-11 23:47:55,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:55,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847522723] [2024-10-11 23:47:55,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:55,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:55,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:47:55,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:55,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847522723] [2024-10-11 23:47:55,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847522723] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:55,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:55,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:47:55,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687611739] [2024-10-11 23:47:55,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:55,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:47:55,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:55,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:47:55,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:47:55,874 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-11 23:47:55,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-10-11 23:47:55,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:55,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-11 23:47:55,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:55,977 INFO L124 PetriNetUnfolderBase]: 640/1332 cut-off events. [2024-10-11 23:47:55,977 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-10-11 23:47:55,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2429 conditions, 1332 events. 640/1332 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7547 event pairs, 570 based on Foata normal form. 1/1223 useless extension candidates. Maximal degree in co-relation 2404. Up to 1041 conditions per place. [2024-10-11 23:47:55,983 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 28 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2024-10-11 23:47:55,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 52 transitions, 204 flow [2024-10-11 23:47:55,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:47:55,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:47:55,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-10-11 23:47:55,984 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5515151515151515 [2024-10-11 23:47:55,984 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 144 flow. Second operand 3 states and 91 transitions. [2024-10-11 23:47:55,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 52 transitions, 204 flow [2024-10-11 23:47:55,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 52 transitions, 182 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-11 23:47:55,985 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 126 flow [2024-10-11 23:47:55,985 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-10-11 23:47:55,985 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-10-11 23:47:55,986 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 126 flow [2024-10-11 23:47:55,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-10-11 23:47:55,986 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:55,986 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:55,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 23:47:55,986 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:47:55,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:55,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1081237396, now seen corresponding path program 1 times [2024-10-11 23:47:55,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:55,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393889891] [2024-10-11 23:47:55,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:55,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:56,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:56,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:56,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393889891] [2024-10-11 23:47:56,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393889891] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:56,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779943134] [2024-10-11 23:47:56,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:56,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:56,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:56,028 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:56,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 23:47:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:56,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:47:56,085 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:56,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:56,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:47:56,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:56,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779943134] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:47:56,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:47:56,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-11 23:47:56,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212606552] [2024-10-11 23:47:56,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:47:56,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 23:47:56,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:56,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 23:47:56,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 23:47:56,131 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-11 23:47:56,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 126 flow. Second operand has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 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) [2024-10-11 23:47:56,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:56,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-11 23:47:56,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:56,294 INFO L124 PetriNetUnfolderBase]: 640/1336 cut-off events. [2024-10-11 23:47:56,294 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-10-11 23:47:56,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2432 conditions, 1336 events. 640/1336 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7525 event pairs, 570 based on Foata normal form. 2/1229 useless extension candidates. Maximal degree in co-relation 2397. Up to 1039 conditions per place. [2024-10-11 23:47:56,299 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 28 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2024-10-11 23:47:56,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 211 flow [2024-10-11 23:47:56,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:47:56,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:47:56,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-10-11 23:47:56,300 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4597402597402597 [2024-10-11 23:47:56,300 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 126 flow. Second operand 7 states and 177 transitions. [2024-10-11 23:47:56,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 211 flow [2024-10-11 23:47:56,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:47:56,302 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 152 flow [2024-10-11 23:47:56,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=152, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-10-11 23:47:56,302 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2024-10-11 23:47:56,303 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 152 flow [2024-10-11 23:47:56,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 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) [2024-10-11 23:47:56,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:56,303 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:56,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 23:47:56,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 23:47:56,508 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:47:56,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:56,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1750020084, now seen corresponding path program 2 times [2024-10-11 23:47:56,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:56,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406647252] [2024-10-11 23:47:56,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:56,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:56,555 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 23:47:56,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:56,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406647252] [2024-10-11 23:47:56,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406647252] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:56,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:56,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:47:56,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551666492] [2024-10-11 23:47:56,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:56,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:47:56,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:56,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:47:56,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:47:56,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-11 23:47:56,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-10-11 23:47:56,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:56,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-11 23:47:56,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:56,674 INFO L124 PetriNetUnfolderBase]: 698/1432 cut-off events. [2024-10-11 23:47:56,674 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-10-11 23:47:56,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 1432 events. 698/1432 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8011 event pairs, 291 based on Foata normal form. 36/1390 useless extension candidates. Maximal degree in co-relation 2592. Up to 976 conditions per place. [2024-10-11 23:47:56,680 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 48 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-10-11 23:47:56,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 68 transitions, 283 flow [2024-10-11 23:47:56,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:47:56,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:47:56,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-10-11 23:47:56,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6424242424242425 [2024-10-11 23:47:56,681 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 152 flow. Second operand 3 states and 106 transitions. [2024-10-11 23:47:56,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 68 transitions, 283 flow [2024-10-11 23:47:56,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 279 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:47:56,684 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 150 flow [2024-10-11 23:47:56,684 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-10-11 23:47:56,685 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-10-11 23:47:56,686 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 150 flow [2024-10-11 23:47:56,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-10-11 23:47:56,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:56,686 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:56,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 23:47:56,686 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:47:56,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:56,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1583951849, now seen corresponding path program 1 times [2024-10-11 23:47:56,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:56,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079138323] [2024-10-11 23:47:56,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:56,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 23:47:56,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:56,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079138323] [2024-10-11 23:47:56,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079138323] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:56,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:56,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:47:56,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141538720] [2024-10-11 23:47:56,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:56,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:47:56,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:56,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:47:56,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:47:56,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-11 23:47:56,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-10-11 23:47:56,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:56,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-11 23:47:56,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:56,851 INFO L124 PetriNetUnfolderBase]: 640/1326 cut-off events. [2024-10-11 23:47:56,851 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2024-10-11 23:47:56,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2500 conditions, 1326 events. 640/1326 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7250 event pairs, 264 based on Foata normal form. 36/1290 useless extension candidates. Maximal degree in co-relation 2461. Up to 882 conditions per place. [2024-10-11 23:47:56,857 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 47 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2024-10-11 23:47:56,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 67 transitions, 279 flow [2024-10-11 23:47:56,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:47:56,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:47:56,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-10-11 23:47:56,858 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-10-11 23:47:56,858 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 150 flow. Second operand 3 states and 105 transitions. [2024-10-11 23:47:56,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 67 transitions, 279 flow [2024-10-11 23:47:56,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 67 transitions, 275 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:47:56,859 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 148 flow [2024-10-11 23:47:56,859 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-10-11 23:47:56,860 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2024-10-11 23:47:56,860 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 148 flow [2024-10-11 23:47:56,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-10-11 23:47:56,860 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:56,861 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:56,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 23:47:56,861 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:47:56,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:56,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1803873116, now seen corresponding path program 1 times [2024-10-11 23:47:56,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:56,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527583268] [2024-10-11 23:47:56,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:56,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:56,898 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-11 23:47:56,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:56,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527583268] [2024-10-11 23:47:56,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527583268] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:56,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:56,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:47:56,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930944308] [2024-10-11 23:47:56,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:56,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:47:56,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:56,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:47:56,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:47:56,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-11 23:47:56,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-10-11 23:47:56,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:56,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-11 23:47:56,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:57,013 INFO L124 PetriNetUnfolderBase]: 695/1416 cut-off events. [2024-10-11 23:47:57,013 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2024-10-11 23:47:57,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2684 conditions, 1416 events. 695/1416 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7819 event pairs, 102 based on Foata normal form. 33/1401 useless extension candidates. Maximal degree in co-relation 2645. Up to 913 conditions per place. [2024-10-11 23:47:57,019 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 47 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2024-10-11 23:47:57,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 274 flow [2024-10-11 23:47:57,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:47:57,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:47:57,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-10-11 23:47:57,020 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-10-11 23:47:57,020 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 148 flow. Second operand 3 states and 105 transitions. [2024-10-11 23:47:57,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 274 flow [2024-10-11 23:47:57,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 65 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:47:57,022 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 146 flow [2024-10-11 23:47:57,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2024-10-11 23:47:57,023 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 5 predicate places. [2024-10-11 23:47:57,023 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 146 flow [2024-10-11 23:47:57,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-10-11 23:47:57,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:57,032 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2024-10-11 23:47:57,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 23:47:57,032 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:47:57,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:57,032 INFO L85 PathProgramCache]: Analyzing trace with hash -85516912, now seen corresponding path program 1 times [2024-10-11 23:47:57,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:57,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759664477] [2024-10-11 23:47:57,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:57,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:57,098 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 23:47:57,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:57,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759664477] [2024-10-11 23:47:57,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759664477] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:57,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700950086] [2024-10-11 23:47:57,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:57,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:57,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:57,101 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:57,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 23:47:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:57,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 23:47:57,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:57,192 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 23:47:57,192 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:47:57,251 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 23:47:57,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700950086] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:47:57,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:47:57,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-11 23:47:57,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331767965] [2024-10-11 23:47:57,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:47:57,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 23:47:57,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:57,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 23:47:57,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-11 23:47:57,263 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-11 23:47:57,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 146 flow. Second operand has 15 states, 15 states have (on average 21.4) internal successors, (321), 15 states have internal predecessors, (321), 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) [2024-10-11 23:47:57,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:57,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-11 23:47:57,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:57,456 INFO L124 PetriNetUnfolderBase]: 640/1331 cut-off events. [2024-10-11 23:47:57,457 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-10-11 23:47:57,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2517 conditions, 1331 events. 640/1331 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7403 event pairs, 570 based on Foata normal form. 3/1239 useless extension candidates. Maximal degree in co-relation 2451. Up to 1039 conditions per place. [2024-10-11 23:47:57,462 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 28 selfloop transitions, 13 changer transitions 0/58 dead transitions. [2024-10-11 23:47:57,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 58 transitions, 264 flow [2024-10-11 23:47:57,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 23:47:57,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 23:47:57,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 304 transitions. [2024-10-11 23:47:57,464 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4251748251748252 [2024-10-11 23:47:57,464 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 146 flow. Second operand 13 states and 304 transitions. [2024-10-11 23:47:57,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 58 transitions, 264 flow [2024-10-11 23:47:57,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 58 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:47:57,466 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 219 flow [2024-10-11 23:47:57,466 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=219, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2024-10-11 23:47:57,467 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2024-10-11 23:47:57,467 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 219 flow [2024-10-11 23:47:57,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 21.4) internal successors, (321), 15 states have internal predecessors, (321), 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) [2024-10-11 23:47:57,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:57,467 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 3, 2, 1, 1, 1, 1, 1] [2024-10-11 23:47:57,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 23:47:57,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 23:47:57,669 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-11 23:47:57,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:57,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1711516783, now seen corresponding path program 2 times [2024-10-11 23:47:57,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:57,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219352058] [2024-10-11 23:47:57,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:57,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:47:57,681 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 23:47:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:47:57,691 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 23:47:57,692 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 23:47:57,692 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-10-11 23:47:57,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2024-10-11 23:47:57,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2024-10-11 23:47:57,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2024-10-11 23:47:57,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2024-10-11 23:47:57,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2024-10-11 23:47:57,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2024-10-11 23:47:57,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2024-10-11 23:47:57,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2024-10-11 23:47:57,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2024-10-11 23:47:57,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2024-10-11 23:47:57,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2024-10-11 23:47:57,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2024-10-11 23:47:57,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2024-10-11 23:47:57,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2024-10-11 23:47:57,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 23:47:57,693 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2024-10-11 23:47:57,694 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 23:47:57,694 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-11 23:47:57,712 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 23:47:57,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 77 transitions, 172 flow [2024-10-11 23:47:57,718 INFO L124 PetriNetUnfolderBase]: 7/85 cut-off events. [2024-10-11 23:47:57,718 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-11 23:47:57,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 85 events. 7/85 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 208 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 66. Up to 4 conditions per place. [2024-10-11 23:47:57,718 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 77 transitions, 172 flow [2024-10-11 23:47:57,719 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 77 transitions, 172 flow [2024-10-11 23:47:57,720 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:47:57,720 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;@68d2a2aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:47:57,720 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-10-11 23:47:57,721 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:47:57,721 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-11 23:47:57,721 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:47:57,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:57,721 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 23:47:57,721 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:47:57,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:57,721 INFO L85 PathProgramCache]: Analyzing trace with hash 433611, now seen corresponding path program 1 times [2024-10-11 23:47:57,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:57,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717062028] [2024-10-11 23:47:57,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:57,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:57,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:57,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:57,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717062028] [2024-10-11 23:47:57,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717062028] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:57,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:57,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:47:57,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098998797] [2024-10-11 23:47:57,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:57,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:47:57,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:57,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:47:57,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:47:57,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-11 23:47:57,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:57,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:57,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-11 23:47:57,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:58,938 INFO L124 PetriNetUnfolderBase]: 11409/19193 cut-off events. [2024-10-11 23:47:58,938 INFO L125 PetriNetUnfolderBase]: For 799/799 co-relation queries the response was YES. [2024-10-11 23:47:58,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35523 conditions, 19193 events. 11409/19193 cut-off events. For 799/799 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 146550 event pairs, 10250 based on Foata normal form. 1159/19041 useless extension candidates. Maximal degree in co-relation 15025. Up to 15805 conditions per place. [2024-10-11 23:47:59,022 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 43 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-10-11 23:47:59,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 75 transitions, 260 flow [2024-10-11 23:47:59,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:47:59,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:47:59,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2024-10-11 23:47:59,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5487012987012987 [2024-10-11 23:47:59,024 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 172 flow. Second operand 4 states and 169 transitions. [2024-10-11 23:47:59,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 75 transitions, 260 flow [2024-10-11 23:47:59,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 258 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-11 23:47:59,025 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 186 flow [2024-10-11 23:47:59,026 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-10-11 23:47:59,026 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-10-11 23:47:59,026 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 186 flow [2024-10-11 23:47:59,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:59,027 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:59,027 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-11 23:47:59,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 23:47:59,027 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:47:59,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:59,027 INFO L85 PathProgramCache]: Analyzing trace with hash 33236063, now seen corresponding path program 1 times [2024-10-11 23:47:59,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:59,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24517042] [2024-10-11 23:47:59,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:59,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:59,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:59,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:59,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24517042] [2024-10-11 23:47:59,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24517042] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:59,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936844763] [2024-10-11 23:47:59,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:59,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:59,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:59,073 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:59,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 23:47:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:59,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:47:59,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:59,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:59,144 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:47:59,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936844763] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:59,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:47:59,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-11 23:47:59,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494911974] [2024-10-11 23:47:59,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:59,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:47:59,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:59,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:47:59,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:47:59,151 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-11 23:47:59,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:59,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:59,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-11 23:47:59,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:00,352 INFO L124 PetriNetUnfolderBase]: 11409/19192 cut-off events. [2024-10-11 23:48:00,352 INFO L125 PetriNetUnfolderBase]: For 442/442 co-relation queries the response was YES. [2024-10-11 23:48:00,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35412 conditions, 19192 events. 11409/19192 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 146540 event pairs, 10250 based on Foata normal form. 1/17882 useless extension candidates. Maximal degree in co-relation 35392. Up to 15800 conditions per place. [2024-10-11 23:48:00,434 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 39 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2024-10-11 23:48:00,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 74 transitions, 272 flow [2024-10-11 23:48:00,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:48:00,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:48:00,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 220 transitions. [2024-10-11 23:48:00,435 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-10-11 23:48:00,435 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 186 flow. Second operand 6 states and 220 transitions. [2024-10-11 23:48:00,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 74 transitions, 272 flow [2024-10-11 23:48:00,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 74 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:48:00,437 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 192 flow [2024-10-11 23:48:00,437 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-10-11 23:48:00,437 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2024-10-11 23:48:00,438 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 192 flow [2024-10-11 23:48:00,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:48:00,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:00,438 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-11 23:48:00,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 23:48:00,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 23:48:00,639 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:48:00,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:00,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1030318389, now seen corresponding path program 1 times [2024-10-11 23:48:00,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:00,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963641972] [2024-10-11 23:48:00,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:00,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:00,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:48:00,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:00,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963641972] [2024-10-11 23:48:00,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963641972] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:00,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:48:00,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:48:00,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081999019] [2024-10-11 23:48:00,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:00,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:48:00,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:00,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:48:00,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:48:00,756 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-11 23:48:00,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 192 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) [2024-10-11 23:48:00,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:00,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-11 23:48:00,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:01,766 INFO L124 PetriNetUnfolderBase]: 11409/19191 cut-off events. [2024-10-11 23:48:01,767 INFO L125 PetriNetUnfolderBase]: For 447/447 co-relation queries the response was YES. [2024-10-11 23:48:01,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35414 conditions, 19191 events. 11409/19191 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 146566 event pairs, 10250 based on Foata normal form. 1/17882 useless extension candidates. Maximal degree in co-relation 35388. Up to 15803 conditions per place. [2024-10-11 23:48:01,868 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 40 selfloop transitions, 4 changer transitions 0/73 dead transitions. [2024-10-11 23:48:01,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 73 transitions, 276 flow [2024-10-11 23:48:01,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:48:01,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:48:01,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-10-11 23:48:01,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5627705627705628 [2024-10-11 23:48:01,870 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 192 flow. Second operand 3 states and 130 transitions. [2024-10-11 23:48:01,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 73 transitions, 276 flow [2024-10-11 23:48:01,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 254 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-11 23:48:01,871 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 174 flow [2024-10-11 23:48:01,872 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2024-10-11 23:48:01,872 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2024-10-11 23:48:01,872 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 174 flow [2024-10-11 23:48:01,872 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) [2024-10-11 23:48:01,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:01,873 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:01,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 23:48:01,873 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:48:01,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:01,873 INFO L85 PathProgramCache]: Analyzing trace with hash -2000107466, now seen corresponding path program 1 times [2024-10-11 23:48:01,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:01,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327385258] [2024-10-11 23:48:01,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:01,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:01,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:48:01,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:01,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327385258] [2024-10-11 23:48:01,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327385258] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:48:01,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030117772] [2024-10-11 23:48:01,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:01,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:48:01,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:48:01,915 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:48:01,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 23:48:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:02,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:48:02,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:48:02,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:48:02,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:48:02,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:48:02,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030117772] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:48:02,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:48:02,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-11 23:48:02,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244612716] [2024-10-11 23:48:02,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:48:02,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 23:48:02,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:02,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 23:48:02,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 23:48:02,170 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-11 23:48:02,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 174 flow. Second operand has 10 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 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) [2024-10-11 23:48:02,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:02,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-11 23:48:02,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:03,153 INFO L124 PetriNetUnfolderBase]: 11409/19195 cut-off events. [2024-10-11 23:48:03,153 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-10-11 23:48:03,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35417 conditions, 19195 events. 11409/19195 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 146625 event pairs, 10250 based on Foata normal form. 2/17888 useless extension candidates. Maximal degree in co-relation 35381. Up to 15801 conditions per place. [2024-10-11 23:48:03,228 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 40 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2024-10-11 23:48:03,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 76 transitions, 283 flow [2024-10-11 23:48:03,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:48:03,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:48:03,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 252 transitions. [2024-10-11 23:48:03,230 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2024-10-11 23:48:03,230 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 174 flow. Second operand 7 states and 252 transitions. [2024-10-11 23:48:03,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 76 transitions, 283 flow [2024-10-11 23:48:03,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 76 transitions, 269 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:48:03,231 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 200 flow [2024-10-11 23:48:03,232 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2024-10-11 23:48:03,232 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 8 predicate places. [2024-10-11 23:48:03,232 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 200 flow [2024-10-11 23:48:03,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 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) [2024-10-11 23:48:03,232 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:03,233 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:03,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 23:48:03,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:48:03,435 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:48:03,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:03,435 INFO L85 PathProgramCache]: Analyzing trace with hash -132993098, now seen corresponding path program 2 times [2024-10-11 23:48:03,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:03,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158241796] [2024-10-11 23:48:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:03,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:03,473 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 23:48:03,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:03,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158241796] [2024-10-11 23:48:03,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158241796] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:03,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:48:03,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:48:03,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181183789] [2024-10-11 23:48:03,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:03,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:48:03,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:03,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:48:03,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:48:03,479 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-11 23:48:03,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2024-10-11 23:48:03,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:03,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-11 23:48:03,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:04,812 INFO L124 PetriNetUnfolderBase]: 12446/20635 cut-off events. [2024-10-11 23:48:04,812 INFO L125 PetriNetUnfolderBase]: For 463/463 co-relation queries the response was YES. [2024-10-11 23:48:04,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38336 conditions, 20635 events. 12446/20635 cut-off events. For 463/463 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 158626 event pairs, 1538 based on Foata normal form. 399/20377 useless extension candidates. Maximal degree in co-relation 38295. Up to 14759 conditions per place. [2024-10-11 23:48:04,888 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 72 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2024-10-11 23:48:04,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 101 transitions, 408 flow [2024-10-11 23:48:04,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:48:04,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:48:04,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2024-10-11 23:48:04,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6796536796536796 [2024-10-11 23:48:04,890 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 200 flow. Second operand 3 states and 157 transitions. [2024-10-11 23:48:04,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 101 transitions, 408 flow [2024-10-11 23:48:04,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 101 transitions, 404 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:48:04,891 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 198 flow [2024-10-11 23:48:04,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2024-10-11 23:48:04,892 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2024-10-11 23:48:04,892 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 198 flow [2024-10-11 23:48:04,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2024-10-11 23:48:04,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:04,892 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:04,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-11 23:48:04,892 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:48:04,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:04,892 INFO L85 PathProgramCache]: Analyzing trace with hash 172181730, now seen corresponding path program 1 times [2024-10-11 23:48:04,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:04,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050862561] [2024-10-11 23:48:04,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:04,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:04,923 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 23:48:04,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:04,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050862561] [2024-10-11 23:48:04,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050862561] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:04,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:48:04,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:48:04,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863924516] [2024-10-11 23:48:04,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:04,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:48:04,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:04,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:48:04,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:48:04,929 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-11 23:48:04,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2024-10-11 23:48:04,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:04,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-11 23:48:04,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:05,985 INFO L124 PetriNetUnfolderBase]: 11409/19199 cut-off events. [2024-10-11 23:48:05,986 INFO L125 PetriNetUnfolderBase]: For 1221/1221 co-relation queries the response was YES. [2024-10-11 23:48:06,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36225 conditions, 19199 events. 11409/19199 cut-off events. For 1221/1221 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 148235 event pairs, 1538 based on Foata normal form. 399/18956 useless extension candidates. Maximal degree in co-relation 36185. Up to 13323 conditions per place. [2024-10-11 23:48:06,044 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 71 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2024-10-11 23:48:06,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 100 transitions, 404 flow [2024-10-11 23:48:06,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:48:06,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:48:06,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-10-11 23:48:06,046 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6753246753246753 [2024-10-11 23:48:06,046 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 198 flow. Second operand 3 states and 156 transitions. [2024-10-11 23:48:06,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 100 transitions, 404 flow [2024-10-11 23:48:06,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 100 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:48:06,048 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 196 flow [2024-10-11 23:48:06,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2024-10-11 23:48:06,049 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2024-10-11 23:48:06,049 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 196 flow [2024-10-11 23:48:06,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2024-10-11 23:48:06,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:06,049 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:06,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-11 23:48:06,049 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:48:06,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:06,050 INFO L85 PathProgramCache]: Analyzing trace with hash -2081627036, now seen corresponding path program 1 times [2024-10-11 23:48:06,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:06,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785646935] [2024-10-11 23:48:06,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:06,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:06,121 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:48:06,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:06,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785646935] [2024-10-11 23:48:06,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785646935] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:48:06,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711226829] [2024-10-11 23:48:06,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:06,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:48:06,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:48:06,123 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:48:06,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 23:48:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:06,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 23:48:06,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:48:06,216 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:48:06,216 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:48:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:48:06,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711226829] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:48:06,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:48:06,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-11 23:48:06,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641793241] [2024-10-11 23:48:06,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:48:06,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 23:48:06,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:06,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 23:48:06,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-11 23:48:06,276 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-11 23:48:06,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 196 flow. Second operand has 15 states, 15 states have (on average 30.466666666666665) internal successors, (457), 15 states have internal predecessors, (457), 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) [2024-10-11 23:48:06,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:06,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-11 23:48:06,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:07,570 INFO L124 PetriNetUnfolderBase]: 11409/19208 cut-off events. [2024-10-11 23:48:07,570 INFO L125 PetriNetUnfolderBase]: For 1264/1264 co-relation queries the response was YES. [2024-10-11 23:48:07,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36252 conditions, 19208 events. 11409/19208 cut-off events. For 1264/1264 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 146578 event pairs, 10250 based on Foata normal form. 3/17902 useless extension candidates. Maximal degree in co-relation 36185. Up to 15801 conditions per place. [2024-10-11 23:48:07,654 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 40 selfloop transitions, 13 changer transitions 0/80 dead transitions. [2024-10-11 23:48:07,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 80 transitions, 338 flow [2024-10-11 23:48:07,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 23:48:07,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 23:48:07,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 433 transitions. [2024-10-11 23:48:07,660 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4325674325674326 [2024-10-11 23:48:07,660 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 196 flow. Second operand 13 states and 433 transitions. [2024-10-11 23:48:07,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 80 transitions, 338 flow [2024-10-11 23:48:07,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 80 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:48:07,662 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 269 flow [2024-10-11 23:48:07,662 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=269, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-10-11 23:48:07,664 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 19 predicate places. [2024-10-11 23:48:07,664 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 269 flow [2024-10-11 23:48:07,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 30.466666666666665) internal successors, (457), 15 states have internal predecessors, (457), 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) [2024-10-11 23:48:07,665 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:07,665 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:07,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-11 23:48:07,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:48:07,866 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:48:07,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:07,866 INFO L85 PathProgramCache]: Analyzing trace with hash -468022576, now seen corresponding path program 2 times [2024-10-11 23:48:07,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:07,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491036589] [2024-10-11 23:48:07,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:07,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:07,928 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-11 23:48:07,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:07,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491036589] [2024-10-11 23:48:07,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491036589] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:07,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:48:07,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:48:07,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584923030] [2024-10-11 23:48:07,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:07,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:48:07,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:07,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:48:07,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:48:07,936 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-11 23:48:07,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 269 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2024-10-11 23:48:07,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:07,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-11 23:48:07,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:09,075 INFO L124 PetriNetUnfolderBase]: 12443/20454 cut-off events. [2024-10-11 23:48:09,075 INFO L125 PetriNetUnfolderBase]: For 504/504 co-relation queries the response was YES. [2024-10-11 23:48:09,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38186 conditions, 20454 events. 12443/20454 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 151700 event pairs, 3941 based on Foata normal form. 396/19986 useless extension candidates. Maximal degree in co-relation 38099. Up to 14696 conditions per place. [2024-10-11 23:48:09,187 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 77 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2024-10-11 23:48:09,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 104 transitions, 480 flow [2024-10-11 23:48:09,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:48:09,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:48:09,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-10-11 23:48:09,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6753246753246753 [2024-10-11 23:48:09,189 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 269 flow. Second operand 3 states and 156 transitions. [2024-10-11 23:48:09,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 104 transitions, 480 flow [2024-10-11 23:48:09,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 104 transitions, 470 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-11 23:48:09,191 INFO L231 Difference]: Finished difference. Result has 93 places, 79 transitions, 261 flow [2024-10-11 23:48:09,191 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=93, PETRI_TRANSITIONS=79} [2024-10-11 23:48:09,193 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 16 predicate places. [2024-10-11 23:48:09,194 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 79 transitions, 261 flow [2024-10-11 23:48:09,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2024-10-11 23:48:09,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:09,194 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:09,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-11 23:48:09,194 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:48:09,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:09,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1623797475, now seen corresponding path program 1 times [2024-10-11 23:48:09,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:09,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082358460] [2024-10-11 23:48:09,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:09,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:09,290 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-11 23:48:09,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:09,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082358460] [2024-10-11 23:48:09,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082358460] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:09,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:48:09,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:48:09,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994114763] [2024-10-11 23:48:09,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:09,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:48:09,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:09,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:48:09,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:48:09,300 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-11 23:48:09,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 79 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2024-10-11 23:48:09,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:09,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-11 23:48:09,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:10,699 INFO L124 PetriNetUnfolderBase]: 11409/18892 cut-off events. [2024-10-11 23:48:10,699 INFO L125 PetriNetUnfolderBase]: For 1252/1252 co-relation queries the response was YES. [2024-10-11 23:48:10,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35949 conditions, 18892 events. 11409/18892 cut-off events. For 1252/1252 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 139055 event pairs, 3644 based on Foata normal form. 396/18475 useless extension candidates. Maximal degree in co-relation 35866. Up to 13266 conditions per place. [2024-10-11 23:48:10,800 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 76 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2024-10-11 23:48:10,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 103 transitions, 470 flow [2024-10-11 23:48:10,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:48:10,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:48:10,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-10-11 23:48:10,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.670995670995671 [2024-10-11 23:48:10,802 INFO L175 Difference]: Start difference. First operand has 93 places, 79 transitions, 261 flow. Second operand 3 states and 155 transitions. [2024-10-11 23:48:10,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 103 transitions, 470 flow [2024-10-11 23:48:10,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 103 transitions, 466 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:48:10,807 INFO L231 Difference]: Finished difference. Result has 92 places, 78 transitions, 259 flow [2024-10-11 23:48:10,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=92, PETRI_TRANSITIONS=78} [2024-10-11 23:48:10,808 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 15 predicate places. [2024-10-11 23:48:10,808 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 78 transitions, 259 flow [2024-10-11 23:48:10,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2024-10-11 23:48:10,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:10,809 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:10,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-11 23:48:10,809 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:48:10,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:10,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1460830165, now seen corresponding path program 1 times [2024-10-11 23:48:10,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:10,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593513775] [2024-10-11 23:48:10,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:10,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-11 23:48:10,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:10,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593513775] [2024-10-11 23:48:10,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593513775] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:10,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:48:10,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:48:10,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964865467] [2024-10-11 23:48:10,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:10,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:48:10,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:10,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:48:10,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:48:10,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-11 23:48:10,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 78 transitions, 259 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-10-11 23:48:10,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:10,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-11 23:48:10,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:48:12,359 INFO L124 PetriNetUnfolderBase]: 12377/20389 cut-off events. [2024-10-11 23:48:12,359 INFO L125 PetriNetUnfolderBase]: For 1348/1348 co-relation queries the response was YES. [2024-10-11 23:48:12,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38843 conditions, 20389 events. 12377/20389 cut-off events. For 1348/1348 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 152589 event pairs, 2132 based on Foata normal form. 363/20146 useless extension candidates. Maximal degree in co-relation 38760. Up to 13673 conditions per place. [2024-10-11 23:48:12,470 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 76 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2024-10-11 23:48:12,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 101 transitions, 465 flow [2024-10-11 23:48:12,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:48:12,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:48:12,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-10-11 23:48:12,471 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.670995670995671 [2024-10-11 23:48:12,471 INFO L175 Difference]: Start difference. First operand has 92 places, 78 transitions, 259 flow. Second operand 3 states and 155 transitions. [2024-10-11 23:48:12,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 101 transitions, 465 flow [2024-10-11 23:48:12,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 101 transitions, 457 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:48:12,475 INFO L231 Difference]: Finished difference. Result has 91 places, 77 transitions, 257 flow [2024-10-11 23:48:12,475 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=257, PETRI_PLACES=91, PETRI_TRANSITIONS=77} [2024-10-11 23:48:12,475 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 14 predicate places. [2024-10-11 23:48:12,475 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 77 transitions, 257 flow [2024-10-11 23:48:12,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-10-11 23:48:12,476 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:12,476 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 4, 3, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:12,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-11 23:48:12,476 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-11 23:48:12,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:12,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1958880075, now seen corresponding path program 1 times [2024-10-11 23:48:12,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:12,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657354443] [2024-10-11 23:48:12,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:12,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:48:12,489 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 23:48:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:48:12,501 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 23:48:12,501 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 23:48:12,501 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2024-10-11 23:48:12,501 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2024-10-11 23:48:12,502 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2024-10-11 23:48:12,502 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2024-10-11 23:48:12,502 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2024-10-11 23:48:12,502 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2024-10-11 23:48:12,502 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2024-10-11 23:48:12,503 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2024-10-11 23:48:12,503 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2024-10-11 23:48:12,503 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2024-10-11 23:48:12,503 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2024-10-11 23:48:12,503 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2024-10-11 23:48:12,503 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2024-10-11 23:48:12,503 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2024-10-11 23:48:12,503 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2024-10-11 23:48:12,504 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2024-10-11 23:48:12,504 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2024-10-11 23:48:12,504 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2024-10-11 23:48:12,504 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2024-10-11 23:48:12,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-11 23:48:12,504 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:48:12,505 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 23:48:12,505 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-11 23:48:12,530 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 23:48:12,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 226 flow [2024-10-11 23:48:12,541 INFO L124 PetriNetUnfolderBase]: 9/110 cut-off events. [2024-10-11 23:48:12,542 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-11 23:48:12,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 110 events. 9/110 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 314 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 93. Up to 5 conditions per place. [2024-10-11 23:48:12,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 99 transitions, 226 flow [2024-10-11 23:48:12,546 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 99 transitions, 226 flow [2024-10-11 23:48:12,547 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:48:12,547 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;@68d2a2aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:48:12,548 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-11 23:48:12,548 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:48:12,549 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-11 23:48:12,549 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:48:12,549 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:48:12,549 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 23:48:12,549 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-11 23:48:12,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:48:12,550 INFO L85 PathProgramCache]: Analyzing trace with hash 531918, now seen corresponding path program 1 times [2024-10-11 23:48:12,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:48:12,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465201372] [2024-10-11 23:48:12,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:48:12,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:48:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:48:12,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:48:12,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:48:12,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465201372] [2024-10-11 23:48:12,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465201372] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:48:12,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:48:12,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:48:12,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719995175] [2024-10-11 23:48:12,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:48:12,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:48:12,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:48:12,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:48:12,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:48:12,577 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 99 [2024-10-11 23:48:12,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 99 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 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) [2024-10-11 23:48:12,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:48:12,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 99 [2024-10-11 23:48:12,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand