./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 01:52:39,981 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 01:52:40,055 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 01:52:40,060 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 01:52:40,060 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 01:52:40,077 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 01:52:40,079 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 01:52:40,079 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 01:52:40,080 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 01:52:40,080 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 01:52:40,080 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 01:52:40,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 01:52:40,081 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 01:52:40,083 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 01:52:40,083 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 01:52:40,083 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 01:52:40,083 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 01:52:40,084 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 01:52:40,084 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 01:52:40,084 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 01:52:40,084 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 01:52:40,085 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 01:52:40,085 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 01:52:40,085 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 01:52:40,085 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 01:52:40,086 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 01:52:40,086 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 01:52:40,086 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 01:52:40,086 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 01:52:40,086 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 01:52:40,087 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 01:52:40,087 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 01:52:40,087 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 01:52:40,087 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 01:52:40,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:52:40,088 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 01:52:40,088 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 01:52:40,088 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 01:52:40,088 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 01:52:40,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 01:52:40,089 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 01:52:40,089 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 01:52:40,089 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 01:52:40,090 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 01:52:40,090 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba [2024-11-23 01:52:40,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 01:52:40,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 01:52:40,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 01:52:40,400 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 01:52:40,403 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 01:52:40,404 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2024-11-23 01:52:41,759 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 01:52:42,009 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 01:52:42,011 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2024-11-23 01:52:42,043 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e6bd2974/09cd494a33674b12a3763afeba72ff90/FLAG7f1eabfb5 [2024-11-23 01:52:42,338 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e6bd2974/09cd494a33674b12a3763afeba72ff90 [2024-11-23 01:52:42,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 01:52:42,342 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 01:52:42,343 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 01:52:42,343 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 01:52:42,347 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 01:52:42,348 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:42" (1/1) ... [2024-11-23 01:52:42,348 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f56bd17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:42, skipping insertion in model container [2024-11-23 01:52:42,349 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:42" (1/1) ... [2024-11-23 01:52:42,400 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 01:52:42,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:52:42,903 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 01:52:42,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:52:43,058 INFO L204 MainTranslator]: Completed translation [2024-11-23 01:52:43,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:43 WrapperNode [2024-11-23 01:52:43,059 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 01:52:43,060 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 01:52:43,063 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 01:52:43,063 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 01:52:43,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:43" (1/1) ... [2024-11-23 01:52:43,089 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:43" (1/1) ... [2024-11-23 01:52:43,127 INFO L138 Inliner]: procedures = 272, calls = 96, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 299 [2024-11-23 01:52:43,131 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 01:52:43,132 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 01:52:43,132 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 01:52:43,132 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 01:52:43,144 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:43" (1/1) ... [2024-11-23 01:52:43,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:43" (1/1) ... [2024-11-23 01:52:43,150 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:43" (1/1) ... [2024-11-23 01:52:43,170 INFO L175 MemorySlicer]: Split 79 memory accesses to 4 slices as follows [2, 2, 5, 70]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 0, 5, 60]. The 5 writes are split as follows [0, 1, 0, 4]. [2024-11-23 01:52:43,170 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:43" (1/1) ... [2024-11-23 01:52:43,170 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:43" (1/1) ... [2024-11-23 01:52:43,182 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:43" (1/1) ... [2024-11-23 01:52:43,190 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:43" (1/1) ... [2024-11-23 01:52:43,192 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:43" (1/1) ... [2024-11-23 01:52:43,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:43" (1/1) ... [2024-11-23 01:52:43,197 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 01:52:43,198 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 01:52:43,198 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 01:52:43,198 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 01:52:43,199 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:43" (1/1) ... [2024-11-23 01:52:43,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:52:43,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:52:43,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 01:52:43,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 01:52:43,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 01:52:43,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 01:52:43,305 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-23 01:52:43,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 01:52:43,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 01:52:43,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 01:52:43,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 01:52:43,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 01:52:43,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 01:52:43,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 01:52:43,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 01:52:43,307 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-23 01:52:43,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 01:52:43,308 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-23 01:52:43,308 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-23 01:52:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 01:52:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 01:52:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 01:52:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 01:52:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 01:52:43,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 01:52:43,312 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 01:52:43,501 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 01:52:43,503 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 01:52:43,974 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 01:52:43,977 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 01:52:44,383 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 01:52:44,384 INFO L316 CfgBuilder]: Removed 25 assume(true) statements. [2024-11-23 01:52:44,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:44 BoogieIcfgContainer [2024-11-23 01:52:44,384 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 01:52:44,386 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 01:52:44,386 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 01:52:44,389 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 01:52:44,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:52:42" (1/3) ... [2024-11-23 01:52:44,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b22028b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:44, skipping insertion in model container [2024-11-23 01:52:44,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:43" (2/3) ... [2024-11-23 01:52:44,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b22028b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:44, skipping insertion in model container [2024-11-23 01:52:44,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:44" (3/3) ... [2024-11-23 01:52:44,393 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_70-funloop_racefree.i [2024-11-23 01:52:44,408 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 01:52:44,408 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-23 01:52:44,409 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 01:52:44,460 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-23 01:52:44,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 123 transitions, 253 flow [2024-11-23 01:52:44,549 INFO L124 PetriNetUnfolderBase]: 38/176 cut-off events. [2024-11-23 01:52:44,550 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-23 01:52:44,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 176 events. 38/176 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 736 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 108. Up to 8 conditions per place. [2024-11-23 01:52:44,558 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 123 transitions, 253 flow [2024-11-23 01:52:44,564 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 122 transitions, 251 flow [2024-11-23 01:52:44,575 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:52:44,584 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;@2232dab9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:52:44,584 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-23 01:52:44,587 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:52:44,587 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-23 01:52:44,587 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:52:44,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:44,588 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 01:52:44,589 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-23 01:52:44,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:44,594 INFO L85 PathProgramCache]: Analyzing trace with hash 763913, now seen corresponding path program 1 times [2024-11-23 01:52:44,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:44,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935921224] [2024-11-23 01:52:44,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:44,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:44,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:44,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:44,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935921224] [2024-11-23 01:52:44,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935921224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:52:44,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:52:44,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:52:44,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753330297] [2024-11-23 01:52:44,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:52:44,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:52:44,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:44,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:52:44,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:52:44,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 123 [2024-11-23 01:52:44,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 122 transitions, 251 flow. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:44,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:44,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 123 [2024-11-23 01:52:44,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:45,309 INFO L124 PetriNetUnfolderBase]: 575/1803 cut-off events. [2024-11-23 01:52:45,310 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-23 01:52:45,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2910 conditions, 1803 events. 575/1803 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 12744 event pairs, 480 based on Foata normal form. 291/1823 useless extension candidates. Maximal degree in co-relation 2810. Up to 1100 conditions per place. [2024-11-23 01:52:45,320 INFO L140 encePairwiseOnDemand]: 97/123 looper letters, 53 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2024-11-23 01:52:45,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 104 transitions, 327 flow [2024-11-23 01:52:45,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:52:45,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:52:45,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 271 transitions. [2024-11-23 01:52:45,333 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5508130081300813 [2024-11-23 01:52:45,334 INFO L175 Difference]: Start difference. First operand has 100 places, 122 transitions, 251 flow. Second operand 4 states and 271 transitions. [2024-11-23 01:52:45,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 104 transitions, 327 flow [2024-11-23 01:52:45,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 104 transitions, 327 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:52:45,340 INFO L231 Difference]: Finished difference. Result has 105 places, 104 transitions, 235 flow [2024-11-23 01:52:45,341 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=105, PETRI_TRANSITIONS=104} [2024-11-23 01:52:45,343 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 5 predicate places. [2024-11-23 01:52:45,344 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 104 transitions, 235 flow [2024-11-23 01:52:45,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:45,344 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:45,344 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-23 01:52:45,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 01:52:45,345 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-23 01:52:45,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:45,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1283705744, now seen corresponding path program 1 times [2024-11-23 01:52:45,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:45,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131055406] [2024-11-23 01:52:45,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:45,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:45,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:45,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:45,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131055406] [2024-11-23 01:52:45,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131055406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:52:45,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130289060] [2024-11-23 01:52:45,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:45,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:52:45,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:52:45,468 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:52:45,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 01:52:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:45,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:52:45,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:52:45,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:45,578 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:52:45,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130289060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:52:45,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:52:45,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 01:52:45,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807237785] [2024-11-23 01:52:45,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:52:45,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:52:45,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:45,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:52:45,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:52:45,594 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 123 [2024-11-23 01:52:45,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 104 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 48.833333333333336) internal successors, (293), 6 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:45,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:45,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 123 [2024-11-23 01:52:45,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:45,879 INFO L124 PetriNetUnfolderBase]: 575/1802 cut-off events. [2024-11-23 01:52:45,880 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-23 01:52:45,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2920 conditions, 1802 events. 575/1802 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 12769 event pairs, 480 based on Foata normal form. 1/1532 useless extension candidates. Maximal degree in co-relation 2902. Up to 1095 conditions per place. [2024-11-23 01:52:45,887 INFO L140 encePairwiseOnDemand]: 118/123 looper letters, 49 selfloop transitions, 6 changer transitions 0/103 dead transitions. [2024-11-23 01:52:45,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 103 transitions, 341 flow [2024-11-23 01:52:45,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:52:45,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:52:45,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 344 transitions. [2024-11-23 01:52:45,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46612466124661245 [2024-11-23 01:52:45,890 INFO L175 Difference]: Start difference. First operand has 105 places, 104 transitions, 235 flow. Second operand 6 states and 344 transitions. [2024-11-23 01:52:45,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 103 transitions, 341 flow [2024-11-23 01:52:45,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 103 transitions, 339 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:52:45,894 INFO L231 Difference]: Finished difference. Result has 108 places, 103 transitions, 241 flow [2024-11-23 01:52:45,894 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=241, PETRI_PLACES=108, PETRI_TRANSITIONS=103} [2024-11-23 01:52:45,895 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 8 predicate places. [2024-11-23 01:52:45,895 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 103 transitions, 241 flow [2024-11-23 01:52:45,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.833333333333336) internal successors, (293), 6 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:45,896 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:45,896 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-23 01:52:45,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 01:52:46,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:52:46,103 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-23 01:52:46,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:46,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1140173217, now seen corresponding path program 1 times [2024-11-23 01:52:46,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:46,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648477016] [2024-11-23 01:52:46,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:46,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:46,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:52:46,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:46,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648477016] [2024-11-23 01:52:46,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648477016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:52:46,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:52:46,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:52:46,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447488821] [2024-11-23 01:52:46,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:52:46,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:52:46,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:46,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:52:46,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:52:46,182 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 123 [2024-11-23 01:52:46,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 103 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:46,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:46,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 123 [2024-11-23 01:52:46,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:46,427 INFO L124 PetriNetUnfolderBase]: 575/1801 cut-off events. [2024-11-23 01:52:46,428 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-23 01:52:46,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2922 conditions, 1801 events. 575/1801 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 12743 event pairs, 480 based on Foata normal form. 1/1532 useless extension candidates. Maximal degree in co-relation 2898. Up to 1098 conditions per place. [2024-11-23 01:52:46,438 INFO L140 encePairwiseOnDemand]: 120/123 looper letters, 50 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2024-11-23 01:52:46,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 102 transitions, 345 flow [2024-11-23 01:52:46,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:52:46,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:52:46,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2024-11-23 01:52:46,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5338753387533876 [2024-11-23 01:52:46,439 INFO L175 Difference]: Start difference. First operand has 108 places, 103 transitions, 241 flow. Second operand 3 states and 197 transitions. [2024-11-23 01:52:46,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 102 transitions, 345 flow [2024-11-23 01:52:46,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 102 transitions, 323 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-23 01:52:46,442 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 223 flow [2024-11-23 01:52:46,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2024-11-23 01:52:46,443 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 3 predicate places. [2024-11-23 01:52:46,443 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 223 flow [2024-11-23 01:52:46,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:46,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:46,443 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:52:46,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 01:52:46,444 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-23 01:52:46,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:46,444 INFO L85 PathProgramCache]: Analyzing trace with hash 489313452, now seen corresponding path program 1 times [2024-11-23 01:52:46,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:46,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508124983] [2024-11-23 01:52:46,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:46,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:46,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:46,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:46,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508124983] [2024-11-23 01:52:46,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508124983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:52:46,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407675628] [2024-11-23 01:52:46,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:46,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:52:46,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:52:46,525 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:52:46,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 01:52:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:46,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 01:52:46,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:52:46,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:46,683 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:52:46,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:46,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407675628] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:52:46,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:52:46,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-23 01:52:46,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250132793] [2024-11-23 01:52:46,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:52:46,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:52:46,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:46,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:52:46,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:52:46,740 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 123 [2024-11-23 01:52:46,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 223 flow. Second operand has 10 states, 10 states have (on average 49.3) internal successors, (493), 10 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:46,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:46,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 123 [2024-11-23 01:52:46,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:47,018 INFO L124 PetriNetUnfolderBase]: 575/1805 cut-off events. [2024-11-23 01:52:47,018 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-23 01:52:47,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2925 conditions, 1805 events. 575/1805 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 12730 event pairs, 480 based on Foata normal form. 2/1538 useless extension candidates. Maximal degree in co-relation 2891. Up to 1096 conditions per place. [2024-11-23 01:52:47,025 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 50 selfloop transitions, 7 changer transitions 0/105 dead transitions. [2024-11-23 01:52:47,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 105 transitions, 352 flow [2024-11-23 01:52:47,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 01:52:47,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 01:52:47,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 395 transitions. [2024-11-23 01:52:47,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45876887340301975 [2024-11-23 01:52:47,027 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 223 flow. Second operand 7 states and 395 transitions. [2024-11-23 01:52:47,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 105 transitions, 352 flow [2024-11-23 01:52:47,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 105 transitions, 338 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:52:47,030 INFO L231 Difference]: Finished difference. Result has 109 places, 105 transitions, 249 flow [2024-11-23 01:52:47,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=249, PETRI_PLACES=109, PETRI_TRANSITIONS=105} [2024-11-23 01:52:47,031 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 9 predicate places. [2024-11-23 01:52:47,031 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 105 transitions, 249 flow [2024-11-23 01:52:47,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.3) internal successors, (493), 10 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:47,032 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:47,032 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-23 01:52:47,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 01:52:47,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-23 01:52:47,236 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-23 01:52:47,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:47,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1495311540, now seen corresponding path program 2 times [2024-11-23 01:52:47,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:47,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025598377] [2024-11-23 01:52:47,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:52:47,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:47,256 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:52:47,257 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:52:47,299 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:52:47,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:47,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025598377] [2024-11-23 01:52:47,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025598377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:52:47,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:52:47,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:52:47,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118564388] [2024-11-23 01:52:47,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:52:47,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:52:47,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:47,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:52:47,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:52:47,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 123 [2024-11-23 01:52:47,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 105 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:47,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:47,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 123 [2024-11-23 01:52:47,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:47,556 INFO L124 PetriNetUnfolderBase]: 595/1764 cut-off events. [2024-11-23 01:52:47,557 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-23 01:52:47,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2921 conditions, 1764 events. 595/1764 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 12352 event pairs, 138 based on Foata normal form. 21/1539 useless extension candidates. Maximal degree in co-relation 2882. Up to 1067 conditions per place. [2024-11-23 01:52:47,564 INFO L140 encePairwiseOnDemand]: 117/123 looper letters, 98 selfloop transitions, 3 changer transitions 0/146 dead transitions. [2024-11-23 01:52:47,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 146 transitions, 533 flow [2024-11-23 01:52:47,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:52:47,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:52:47,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 287 transitions. [2024-11-23 01:52:47,565 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-23 01:52:47,565 INFO L175 Difference]: Start difference. First operand has 109 places, 105 transitions, 249 flow. Second operand 4 states and 287 transitions. [2024-11-23 01:52:47,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 146 transitions, 533 flow [2024-11-23 01:52:47,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 146 transitions, 529 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:52:47,570 INFO L231 Difference]: Finished difference. Result has 109 places, 103 transitions, 251 flow [2024-11-23 01:52:47,571 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=251, PETRI_PLACES=109, PETRI_TRANSITIONS=103} [2024-11-23 01:52:47,572 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 9 predicate places. [2024-11-23 01:52:47,573 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 103 transitions, 251 flow [2024-11-23 01:52:47,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:47,573 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:47,573 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:52:47,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 01:52:47,574 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-23 01:52:47,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:47,574 INFO L85 PathProgramCache]: Analyzing trace with hash 575544587, now seen corresponding path program 1 times [2024-11-23 01:52:47,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:47,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22795400] [2024-11-23 01:52:47,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:47,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:47,775 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:52:47,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:47,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22795400] [2024-11-23 01:52:47,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22795400] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:52:47,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872462603] [2024-11-23 01:52:47,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:47,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:52:47,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:52:47,780 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:52:47,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 01:52:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:47,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 01:52:47,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:52:47,997 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:52:48,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:52:48,135 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:52:48,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872462603] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:52:48,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:52:48,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-23 01:52:48,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032838268] [2024-11-23 01:52:48,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:52:48,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-23 01:52:48,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:48,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 01:52:48,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-23 01:52:48,152 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 123 [2024-11-23 01:52:48,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 103 transitions, 251 flow. Second operand has 18 states, 18 states have (on average 49.22222222222222) internal successors, (886), 18 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:48,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:48,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 123 [2024-11-23 01:52:48,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:48,660 INFO L124 PetriNetUnfolderBase]: 573/1766 cut-off events. [2024-11-23 01:52:48,660 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-23 01:52:48,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2940 conditions, 1766 events. 573/1766 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 12226 event pairs, 480 based on Foata normal form. 4/1527 useless extension candidates. Maximal degree in co-relation 2865. Up to 1074 conditions per place. [2024-11-23 01:52:48,670 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 50 selfloop transitions, 15 changer transitions 0/111 dead transitions. [2024-11-23 01:52:48,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 111 transitions, 429 flow [2024-11-23 01:52:48,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 01:52:48,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-23 01:52:48,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 789 transitions. [2024-11-23 01:52:48,672 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4276422764227642 [2024-11-23 01:52:48,673 INFO L175 Difference]: Start difference. First operand has 109 places, 103 transitions, 251 flow. Second operand 15 states and 789 transitions. [2024-11-23 01:52:48,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 111 transitions, 429 flow [2024-11-23 01:52:48,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 111 transitions, 423 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:52:48,677 INFO L231 Difference]: Finished difference. Result has 124 places, 111 transitions, 342 flow [2024-11-23 01:52:48,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=342, PETRI_PLACES=124, PETRI_TRANSITIONS=111} [2024-11-23 01:52:48,678 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 24 predicate places. [2024-11-23 01:52:48,678 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 111 transitions, 342 flow [2024-11-23 01:52:48,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 49.22222222222222) internal successors, (886), 18 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:48,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:48,679 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:52:48,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 01:52:48,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:52:48,884 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-23 01:52:48,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:48,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1227919413, now seen corresponding path program 2 times [2024-11-23 01:52:48,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:48,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693936302] [2024-11-23 01:52:48,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:52:48,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:48,913 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 01:52:48,913 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:52:49,151 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:52:49,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:49,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693936302] [2024-11-23 01:52:49,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693936302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:52:49,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707484502] [2024-11-23 01:52:49,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:52:49,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:52:49,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:52:49,154 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:52:49,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 01:52:49,226 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 01:52:49,226 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:52:49,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 01:52:49,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:52:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:52:49,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:52:49,410 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:52:49,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707484502] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:52:49,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:52:49,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-11-23 01:52:49,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807243740] [2024-11-23 01:52:49,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:52:49,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-23 01:52:49,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:49,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-23 01:52:49,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-23 01:52:49,442 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 123 [2024-11-23 01:52:49,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 111 transitions, 342 flow. Second operand has 23 states, 23 states have (on average 49.21739130434783) internal successors, (1132), 23 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:49,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:49,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 123 [2024-11-23 01:52:49,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:49,808 INFO L124 PetriNetUnfolderBase]: 573/1775 cut-off events. [2024-11-23 01:52:49,809 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-11-23 01:52:49,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2981 conditions, 1775 events. 573/1775 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 12227 event pairs, 480 based on Foata normal form. 3/1535 useless extension candidates. Maximal degree in co-relation 2846. Up to 1074 conditions per place. [2024-11-23 01:52:49,817 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 50 selfloop transitions, 21 changer transitions 0/117 dead transitions. [2024-11-23 01:52:49,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 117 transitions, 538 flow [2024-11-23 01:52:49,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-23 01:52:49,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-23 01:52:49,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1082 transitions. [2024-11-23 01:52:49,820 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.418892760356175 [2024-11-23 01:52:49,821 INFO L175 Difference]: Start difference. First operand has 124 places, 111 transitions, 342 flow. Second operand 21 states and 1082 transitions. [2024-11-23 01:52:49,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 117 transitions, 538 flow [2024-11-23 01:52:49,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 117 transitions, 528 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-23 01:52:49,824 INFO L231 Difference]: Finished difference. Result has 143 places, 117 transitions, 443 flow [2024-11-23 01:52:49,824 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=443, PETRI_PLACES=143, PETRI_TRANSITIONS=117} [2024-11-23 01:52:49,825 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 43 predicate places. [2024-11-23 01:52:49,825 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 117 transitions, 443 flow [2024-11-23 01:52:49,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 49.21739130434783) internal successors, (1132), 23 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:49,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:49,827 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:52:49,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 01:52:50,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:52:50,031 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-23 01:52:50,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:50,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1404602748, now seen corresponding path program 3 times [2024-11-23 01:52:50,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:50,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258450082] [2024-11-23 01:52:50,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 01:52:50,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:50,109 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-23 01:52:50,109 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-23 01:52:50,109 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 01:52:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 01:52:50,160 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 01:52:50,160 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-23 01:52:50,161 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2024-11-23 01:52:50,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2024-11-23 01:52:50,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2024-11-23 01:52:50,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2024-11-23 01:52:50,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2024-11-23 01:52:50,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2024-11-23 01:52:50,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2024-11-23 01:52:50,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2024-11-23 01:52:50,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2024-11-23 01:52:50,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2024-11-23 01:52:50,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2024-11-23 01:52:50,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2024-11-23 01:52:50,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2024-11-23 01:52:50,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2024-11-23 01:52:50,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2024-11-23 01:52:50,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2024-11-23 01:52:50,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2024-11-23 01:52:50,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2024-11-23 01:52:50,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2024-11-23 01:52:50,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2024-11-23 01:52:50,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2024-11-23 01:52:50,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2024-11-23 01:52:50,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2024-11-23 01:52:50,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2024-11-23 01:52:50,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2024-11-23 01:52:50,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 01:52:50,164 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2024-11-23 01:52:50,171 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-23 01:52:50,171 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-23 01:52:50,210 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-23 01:52:50,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 175 transitions, 366 flow [2024-11-23 01:52:50,229 INFO L124 PetriNetUnfolderBase]: 64/300 cut-off events. [2024-11-23 01:52:50,229 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-23 01:52:50,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 300 events. 64/300 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1506 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 178. Up to 12 conditions per place. [2024-11-23 01:52:50,231 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 175 transitions, 366 flow [2024-11-23 01:52:50,233 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 175 transitions, 366 flow [2024-11-23 01:52:50,234 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:52:50,235 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;@2232dab9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:52:50,235 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-11-23 01:52:50,237 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:52:50,237 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-23 01:52:50,237 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:52:50,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:50,237 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 01:52:50,237 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-23 01:52:50,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:50,238 INFO L85 PathProgramCache]: Analyzing trace with hash 937688, now seen corresponding path program 1 times [2024-11-23 01:52:50,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:50,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935191382] [2024-11-23 01:52:50,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:50,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:50,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:50,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:50,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935191382] [2024-11-23 01:52:50,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935191382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:52:50,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:52:50,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:52:50,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723511717] [2024-11-23 01:52:50,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:52:50,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:52:50,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:50,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:52:50,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:52:50,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 175 [2024-11-23 01:52:50,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 175 transitions, 366 flow. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:50,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:50,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 175 [2024-11-23 01:52:50,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:54,221 INFO L124 PetriNetUnfolderBase]: 24270/52769 cut-off events. [2024-11-23 01:52:54,221 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2024-11-23 01:52:54,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88276 conditions, 52769 events. 24270/52769 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 1462. Compared 566956 event pairs, 21160 based on Foata normal form. 9793/54962 useless extension candidates. Maximal degree in co-relation 65647. Up to 35393 conditions per place. [2024-11-23 01:52:54,570 INFO L140 encePairwiseOnDemand]: 139/175 looper letters, 77 selfloop transitions, 3 changer transitions 0/147 dead transitions. [2024-11-23 01:52:54,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 147 transitions, 470 flow [2024-11-23 01:52:54,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:52:54,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:52:54,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 381 transitions. [2024-11-23 01:52:54,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5442857142857143 [2024-11-23 01:52:54,572 INFO L175 Difference]: Start difference. First operand has 141 places, 175 transitions, 366 flow. Second operand 4 states and 381 transitions. [2024-11-23 01:52:54,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 147 transitions, 470 flow [2024-11-23 01:52:54,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 147 transitions, 470 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:52:54,574 INFO L231 Difference]: Finished difference. Result has 146 places, 147 transitions, 330 flow [2024-11-23 01:52:54,575 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=330, PETRI_PLACES=146, PETRI_TRANSITIONS=147} [2024-11-23 01:52:54,576 INFO L277 CegarLoopForPetriNet]: 141 programPoint places, 5 predicate places. [2024-11-23 01:52:54,576 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 147 transitions, 330 flow [2024-11-23 01:52:54,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:54,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:54,577 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-23 01:52:54,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 01:52:54,577 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-23 01:52:54,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:54,577 INFO L85 PathProgramCache]: Analyzing trace with hash -2129124048, now seen corresponding path program 1 times [2024-11-23 01:52:54,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:54,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918008957] [2024-11-23 01:52:54,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:54,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:54,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:54,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:54,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918008957] [2024-11-23 01:52:54,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918008957] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:52:54,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629884455] [2024-11-23 01:52:54,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:54,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:52:54,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:52:54,635 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:52:54,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 01:52:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:54,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:52:54,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:52:54,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:52:54,728 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:52:54,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629884455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:52:54,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:52:54,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 01:52:54,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142370546] [2024-11-23 01:52:54,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:52:54,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:52:54,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:54,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:52:54,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:52:54,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 175 [2024-11-23 01:52:54,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 147 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:54,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:54,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 175 [2024-11-23 01:52:54,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:52:58,661 INFO L124 PetriNetUnfolderBase]: 24270/52768 cut-off events. [2024-11-23 01:52:58,661 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-11-23 01:52:58,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88286 conditions, 52768 events. 24270/52768 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 1462. Compared 566907 event pairs, 21160 based on Foata normal form. 1/45169 useless extension candidates. Maximal degree in co-relation 88267. Up to 35388 conditions per place. [2024-11-23 01:52:58,981 INFO L140 encePairwiseOnDemand]: 170/175 looper letters, 73 selfloop transitions, 6 changer transitions 0/146 dead transitions. [2024-11-23 01:52:58,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 146 transitions, 484 flow [2024-11-23 01:52:58,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:52:58,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:52:58,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 482 transitions. [2024-11-23 01:52:58,983 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45904761904761904 [2024-11-23 01:52:58,984 INFO L175 Difference]: Start difference. First operand has 146 places, 147 transitions, 330 flow. Second operand 6 states and 482 transitions. [2024-11-23 01:52:58,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 146 transitions, 484 flow [2024-11-23 01:52:58,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 146 transitions, 482 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:52:58,986 INFO L231 Difference]: Finished difference. Result has 149 places, 146 transitions, 336 flow [2024-11-23 01:52:58,987 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=336, PETRI_PLACES=149, PETRI_TRANSITIONS=146} [2024-11-23 01:52:58,989 INFO L277 CegarLoopForPetriNet]: 141 programPoint places, 8 predicate places. [2024-11-23 01:52:58,989 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 146 transitions, 336 flow [2024-11-23 01:52:58,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:58,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:52:58,990 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-23 01:52:58,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 01:52:59,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 01:52:59,190 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-23 01:52:59,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:52:59,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1578335056, now seen corresponding path program 1 times [2024-11-23 01:52:59,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:52:59,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202149567] [2024-11-23 01:52:59,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:52:59,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:52:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:52:59,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:52:59,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:52:59,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202149567] [2024-11-23 01:52:59,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202149567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:52:59,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:52:59,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:52:59,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466281809] [2024-11-23 01:52:59,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:52:59,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:52:59,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:52:59,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:52:59,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:52:59,258 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 175 [2024-11-23 01:52:59,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 146 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:52:59,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:52:59,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 175 [2024-11-23 01:52:59,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:53:02,396 INFO L124 PetriNetUnfolderBase]: 24270/52767 cut-off events. [2024-11-23 01:53:02,396 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2024-11-23 01:53:02,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88288 conditions, 52767 events. 24270/52767 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 1462. Compared 566968 event pairs, 21160 based on Foata normal form. 1/45169 useless extension candidates. Maximal degree in co-relation 88263. Up to 35391 conditions per place. [2024-11-23 01:53:02,689 INFO L140 encePairwiseOnDemand]: 172/175 looper letters, 74 selfloop transitions, 4 changer transitions 0/145 dead transitions. [2024-11-23 01:53:02,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 145 transitions, 488 flow [2024-11-23 01:53:02,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:53:02,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:53:02,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2024-11-23 01:53:02,693 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5295238095238095 [2024-11-23 01:53:02,693 INFO L175 Difference]: Start difference. First operand has 149 places, 146 transitions, 336 flow. Second operand 3 states and 278 transitions. [2024-11-23 01:53:02,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 145 transitions, 488 flow [2024-11-23 01:53:02,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 145 transitions, 466 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-23 01:53:02,696 INFO L231 Difference]: Finished difference. Result has 144 places, 145 transitions, 318 flow [2024-11-23 01:53:02,697 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=144, PETRI_TRANSITIONS=145} [2024-11-23 01:53:02,697 INFO L277 CegarLoopForPetriNet]: 141 programPoint places, 3 predicate places. [2024-11-23 01:53:02,697 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 145 transitions, 318 flow [2024-11-23 01:53:02,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:53:02,698 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:53:02,698 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:53:02,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 01:53:02,698 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-23 01:53:02,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:53:02,698 INFO L85 PathProgramCache]: Analyzing trace with hash -656967283, now seen corresponding path program 1 times [2024-11-23 01:53:02,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:53:02,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170317038] [2024-11-23 01:53:02,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:53:02,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:53:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:53:02,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:53:02,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:53:02,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170317038] [2024-11-23 01:53:02,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170317038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:53:02,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032309772] [2024-11-23 01:53:02,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:53:02,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:53:02,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:53:02,769 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:53:02,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 01:53:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:53:02,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 01:53:02,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:53:02,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:53:02,856 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:53:02,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:53:02,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032309772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:53:02,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:53:02,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-23 01:53:02,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433845401] [2024-11-23 01:53:02,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:53:02,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:53:02,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:53:02,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:53:02,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:53:02,897 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 175 [2024-11-23 01:53:02,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 145 transitions, 318 flow. Second operand has 10 states, 10 states have (on average 68.3) internal successors, (683), 10 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:53:02,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:53:02,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 175 [2024-11-23 01:53:02,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:53:06,339 INFO L124 PetriNetUnfolderBase]: 24270/52771 cut-off events. [2024-11-23 01:53:06,339 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-11-23 01:53:06,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88291 conditions, 52771 events. 24270/52771 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 1462. Compared 566952 event pairs, 21160 based on Foata normal form. 2/45175 useless extension candidates. Maximal degree in co-relation 88256. Up to 35389 conditions per place. [2024-11-23 01:53:06,580 INFO L140 encePairwiseOnDemand]: 171/175 looper letters, 74 selfloop transitions, 7 changer transitions 0/148 dead transitions. [2024-11-23 01:53:06,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 148 transitions, 495 flow [2024-11-23 01:53:06,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 01:53:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 01:53:06,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 552 transitions. [2024-11-23 01:53:06,582 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4506122448979592 [2024-11-23 01:53:06,582 INFO L175 Difference]: Start difference. First operand has 144 places, 145 transitions, 318 flow. Second operand 7 states and 552 transitions. [2024-11-23 01:53:06,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 148 transitions, 495 flow [2024-11-23 01:53:06,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 148 transitions, 481 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:53:06,584 INFO L231 Difference]: Finished difference. Result has 150 places, 148 transitions, 344 flow [2024-11-23 01:53:06,586 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=344, PETRI_PLACES=150, PETRI_TRANSITIONS=148} [2024-11-23 01:53:06,586 INFO L277 CegarLoopForPetriNet]: 141 programPoint places, 9 predicate places. [2024-11-23 01:53:06,587 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 148 transitions, 344 flow [2024-11-23 01:53:06,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.3) internal successors, (683), 10 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:53:06,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:53:06,588 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-23 01:53:06,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-23 01:53:06,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:53:06,789 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-23 01:53:06,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:53:06,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1253243533, now seen corresponding path program 2 times [2024-11-23 01:53:06,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:53:06,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229861279] [2024-11-23 01:53:06,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:53:06,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:53:06,801 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:53:06,801 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:53:06,830 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:53:06,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:53:06,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229861279] [2024-11-23 01:53:06,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229861279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:53:06,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:53:06,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:53:06,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363707202] [2024-11-23 01:53:06,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:53:06,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:53:06,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:53:06,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:53:06,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:53:06,838 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 175 [2024-11-23 01:53:06,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 148 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:53:06,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:53:06,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 175 [2024-11-23 01:53:06,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:53:10,277 INFO L124 PetriNetUnfolderBase]: 26447/54738 cut-off events. [2024-11-23 01:53:10,278 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-11-23 01:53:10,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93631 conditions, 54738 events. 26447/54738 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 1465. Compared 570605 event pairs, 11420 based on Foata normal form. 21/47111 useless extension candidates. Maximal degree in co-relation 93591. Up to 38696 conditions per place. [2024-11-23 01:53:10,561 INFO L140 encePairwiseOnDemand]: 169/175 looper letters, 126 selfloop transitions, 3 changer transitions 0/193 dead transitions. [2024-11-23 01:53:10,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 193 transitions, 692 flow [2024-11-23 01:53:10,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:53:10,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:53:10,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2024-11-23 01:53:10,563 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5585714285714286 [2024-11-23 01:53:10,563 INFO L175 Difference]: Start difference. First operand has 150 places, 148 transitions, 344 flow. Second operand 4 states and 391 transitions. [2024-11-23 01:53:10,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 193 transitions, 692 flow [2024-11-23 01:53:10,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 193 transitions, 688 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:53:10,565 INFO L231 Difference]: Finished difference. Result has 153 places, 150 transitions, 364 flow [2024-11-23 01:53:10,566 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=364, PETRI_PLACES=153, PETRI_TRANSITIONS=150} [2024-11-23 01:53:10,566 INFO L277 CegarLoopForPetriNet]: 141 programPoint places, 12 predicate places. [2024-11-23 01:53:10,566 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 150 transitions, 364 flow [2024-11-23 01:53:10,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:53:10,566 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:53:10,566 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:53:10,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 01:53:10,567 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-23 01:53:10,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:53:10,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1521693614, now seen corresponding path program 1 times [2024-11-23 01:53:10,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:53:10,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662992913] [2024-11-23 01:53:10,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:53:10,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:53:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:53:10,640 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 01:53:10,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:53:10,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662992913] [2024-11-23 01:53:10,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662992913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:53:10,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937204602] [2024-11-23 01:53:10,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:53:10,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:53:10,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:53:10,643 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:53:10,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 01:53:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:53:10,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 01:53:10,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:53:10,736 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 01:53:10,736 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:53:10,793 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 01:53:10,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937204602] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:53:10,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:53:10,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-23 01:53:10,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043809109] [2024-11-23 01:53:10,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:53:10,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-23 01:53:10,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:53:10,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 01:53:10,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-23 01:53:10,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 175 [2024-11-23 01:53:10,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 150 transitions, 364 flow. Second operand has 18 states, 18 states have (on average 68.27777777777777) internal successors, (1229), 18 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:53:10,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:53:10,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 175 [2024-11-23 01:53:10,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:53:14,812 INFO L124 PetriNetUnfolderBase]: 24267/53404 cut-off events. [2024-11-23 01:53:14,812 INFO L125 PetriNetUnfolderBase]: For 1130/1988 co-relation queries the response was YES. [2024-11-23 01:53:14,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89879 conditions, 53404 events. 24267/53404 cut-off events. For 1130/1988 co-relation queries the response was YES. Maximal size of possible extension queue 1468. Compared 578477 event pairs, 21160 based on Foata normal form. 23/46152 useless extension candidates. Maximal degree in co-relation 89802. Up to 35346 conditions per place. [2024-11-23 01:53:15,139 INFO L140 encePairwiseOnDemand]: 171/175 looper letters, 75 selfloop transitions, 15 changer transitions 0/158 dead transitions. [2024-11-23 01:53:15,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 158 transitions, 592 flow [2024-11-23 01:53:15,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 01:53:15,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-23 01:53:15,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1098 transitions. [2024-11-23 01:53:15,142 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41828571428571426 [2024-11-23 01:53:15,142 INFO L175 Difference]: Start difference. First operand has 153 places, 150 transitions, 364 flow. Second operand 15 states and 1098 transitions. [2024-11-23 01:53:15,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 158 transitions, 592 flow [2024-11-23 01:53:15,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 158 transitions, 590 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:53:15,146 INFO L231 Difference]: Finished difference. Result has 170 places, 158 transitions, 459 flow [2024-11-23 01:53:15,146 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=459, PETRI_PLACES=170, PETRI_TRANSITIONS=158} [2024-11-23 01:53:15,146 INFO L277 CegarLoopForPetriNet]: 141 programPoint places, 29 predicate places. [2024-11-23 01:53:15,147 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 158 transitions, 459 flow [2024-11-23 01:53:15,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 68.27777777777777) internal successors, (1229), 18 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:53:15,147 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:53:15,147 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:53:15,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 01:53:15,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:53:15,348 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-23 01:53:15,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:53:15,349 INFO L85 PathProgramCache]: Analyzing trace with hash -389828178, now seen corresponding path program 2 times [2024-11-23 01:53:15,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:53:15,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381425856] [2024-11-23 01:53:15,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:53:15,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:53:15,372 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 01:53:15,372 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:53:15,424 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-23 01:53:15,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:53:15,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381425856] [2024-11-23 01:53:15,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381425856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:53:15,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613302791] [2024-11-23 01:53:15,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:53:15,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:53:15,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:53:15,430 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:53:15,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 01:53:15,513 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 01:53:15,514 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:53:15,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 01:53:15,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:53:15,670 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 01:53:15,670 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:53:15,914 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 01:53:15,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613302791] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:53:15,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:53:15,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 16, 16] total 25 [2024-11-23 01:53:15,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180620866] [2024-11-23 01:53:15,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:53:15,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-23 01:53:15,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:53:15,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-23 01:53:15,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2024-11-23 01:53:15,958 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 175 [2024-11-23 01:53:15,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 158 transitions, 459 flow. Second operand has 25 states, 25 states have (on average 65.6) internal successors, (1640), 25 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:53:15,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:53:15,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 175 [2024-11-23 01:53:15,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:53:20,197 INFO L124 PetriNetUnfolderBase]: 25037/47756 cut-off events. [2024-11-23 01:53:20,197 INFO L125 PetriNetUnfolderBase]: For 1569/1569 co-relation queries the response was YES. [2024-11-23 01:53:20,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86898 conditions, 47756 events. 25037/47756 cut-off events. For 1569/1569 co-relation queries the response was YES. Maximal size of possible extension queue 1263. Compared 462506 event pairs, 840 based on Foata normal form. 444/42228 useless extension candidates. Maximal degree in co-relation 86761. Up to 30730 conditions per place. [2024-11-23 01:53:20,481 INFO L140 encePairwiseOnDemand]: 167/175 looper letters, 199 selfloop transitions, 27 changer transitions 0/290 dead transitions. [2024-11-23 01:53:20,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 290 transitions, 1215 flow [2024-11-23 01:53:20,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-23 01:53:20,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-23 01:53:20,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1830 transitions. [2024-11-23 01:53:20,485 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41828571428571426 [2024-11-23 01:53:20,485 INFO L175 Difference]: Start difference. First operand has 170 places, 158 transitions, 459 flow. Second operand 25 states and 1830 transitions. [2024-11-23 01:53:20,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 290 transitions, 1215 flow [2024-11-23 01:53:20,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 290 transitions, 1205 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-23 01:53:20,491 INFO L231 Difference]: Finished difference. Result has 189 places, 163 transitions, 555 flow [2024-11-23 01:53:20,492 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=555, PETRI_PLACES=189, PETRI_TRANSITIONS=163} [2024-11-23 01:53:20,492 INFO L277 CegarLoopForPetriNet]: 141 programPoint places, 48 predicate places. [2024-11-23 01:53:20,492 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 163 transitions, 555 flow [2024-11-23 01:53:20,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 65.6) internal successors, (1640), 25 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:53:20,493 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:53:20,493 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-23 01:53:20,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 01:53:20,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-23 01:53:20,697 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-23 01:53:20,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:53:20,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1415746409, now seen corresponding path program 1 times [2024-11-23 01:53:20,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:53:20,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852169095] [2024-11-23 01:53:20,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:53:20,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:53:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:53:20,769 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-23 01:53:20,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:53:20,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852169095] [2024-11-23 01:53:20,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852169095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:53:20,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:53:20,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:53:20,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18256797] [2024-11-23 01:53:20,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:53:20,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:53:20,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:53:20,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:53:20,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:53:20,778 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 175 [2024-11-23 01:53:20,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 163 transitions, 555 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:53:20,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:53:20,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 175 [2024-11-23 01:53:20,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:53:24,288 INFO L124 PetriNetUnfolderBase]: 24608/46830 cut-off events. [2024-11-23 01:53:24,289 INFO L125 PetriNetUnfolderBase]: For 3499/3499 co-relation queries the response was YES. [2024-11-23 01:53:24,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86081 conditions, 46830 events. 24608/46830 cut-off events. For 3499/3499 co-relation queries the response was YES. Maximal size of possible extension queue 1238. Compared 450080 event pairs, 1280 based on Foata normal form. 441/41939 useless extension candidates. Maximal degree in co-relation 85926. Up to 32530 conditions per place. [2024-11-23 01:53:24,766 INFO L140 encePairwiseOnDemand]: 170/175 looper letters, 177 selfloop transitions, 6 changer transitions 0/247 dead transitions. [2024-11-23 01:53:24,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 247 transitions, 1087 flow [2024-11-23 01:53:24,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:53:24,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:53:24,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 427 transitions. [2024-11-23 01:53:24,767 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.61 [2024-11-23 01:53:24,767 INFO L175 Difference]: Start difference. First operand has 189 places, 163 transitions, 555 flow. Second operand 4 states and 427 transitions. [2024-11-23 01:53:24,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 247 transitions, 1087 flow [2024-11-23 01:53:24,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 247 transitions, 1010 flow, removed 10 selfloop flow, removed 21 redundant places. [2024-11-23 01:53:24,801 INFO L231 Difference]: Finished difference. Result has 171 places, 163 transitions, 494 flow [2024-11-23 01:53:24,801 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=494, PETRI_PLACES=171, PETRI_TRANSITIONS=163} [2024-11-23 01:53:24,802 INFO L277 CegarLoopForPetriNet]: 141 programPoint places, 30 predicate places. [2024-11-23 01:53:24,802 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 163 transitions, 494 flow [2024-11-23 01:53:24,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:53:24,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:53:24,802 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:53:24,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 01:53:24,802 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-23 01:53:24,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:53:24,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2028998699, now seen corresponding path program 1 times [2024-11-23 01:53:24,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:53:24,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354676758] [2024-11-23 01:53:24,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:53:24,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:53:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:53:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:53:25,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:53:25,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354676758] [2024-11-23 01:53:25,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354676758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:53:25,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:53:25,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 01:53:25,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710907754] [2024-11-23 01:53:25,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:53:25,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:53:25,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:53:25,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:53:25,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 01:53:25,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 175 [2024-11-23 01:53:25,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 163 transitions, 494 flow. Second operand has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:53:25,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:53:25,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 175 [2024-11-23 01:53:25,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand