./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 23:57:34,312 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 23:57:34,378 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 23:57:34,384 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 23:57:34,385 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 23:57:34,409 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 23:57:34,410 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 23:57:34,410 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 23:57:34,411 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 23:57:34,411 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 23:57:34,412 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 23:57:34,412 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 23:57:34,413 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 23:57:34,414 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 23:57:34,415 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 23:57:34,416 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 23:57:34,416 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 23:57:34,416 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 23:57:34,417 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 23:57:34,417 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 23:57:34,420 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 23:57:34,421 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 23:57:34,421 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 23:57:34,421 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 23:57:34,421 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 23:57:34,421 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 23:57:34,422 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 23:57:34,422 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 23:57:34,422 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 23:57:34,422 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 23:57:34,423 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 23:57:34,423 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 23:57:34,423 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 23:57:34,423 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 23:57:34,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:57:34,424 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 23:57:34,424 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 23:57:34,424 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 23:57:34,424 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 23:57:34,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 23:57:34,425 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 23:57:34,425 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 23:57:34,426 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 23:57:34,426 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 23:57:34,426 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 [2024-10-11 23:57:34,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 23:57:34,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 23:57:34,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 23:57:34,678 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 23:57:34,678 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 23:57:34,679 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2024-10-11 23:57:35,998 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 23:57:36,222 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 23:57:36,223 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2024-10-11 23:57:36,239 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f47b453aa/a0740ffad5e4492195a016035dc582b5/FLAGd4b1bd918 [2024-10-11 23:57:36,556 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f47b453aa/a0740ffad5e4492195a016035dc582b5 [2024-10-11 23:57:36,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 23:57:36,561 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 23:57:36,563 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 23:57:36,563 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 23:57:36,568 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 23:57:36,569 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:57:36" (1/1) ... [2024-10-11 23:57:36,569 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3687ad7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:36, skipping insertion in model container [2024-10-11 23:57:36,569 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:57:36" (1/1) ... [2024-10-11 23:57:36,605 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 23:57:37,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:57:37,013 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 23:57:37,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:57:37,115 INFO L204 MainTranslator]: Completed translation [2024-10-11 23:57:37,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:37 WrapperNode [2024-10-11 23:57:37,116 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 23:57:37,117 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 23:57:37,118 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 23:57:37,118 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 23:57:37,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:37" (1/1) ... [2024-10-11 23:57:37,143 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:37" (1/1) ... [2024-10-11 23:57:37,165 INFO L138 Inliner]: procedures = 271, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 101 [2024-10-11 23:57:37,166 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 23:57:37,166 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 23:57:37,167 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 23:57:37,167 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 23:57:37,177 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:37" (1/1) ... [2024-10-11 23:57:37,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:37" (1/1) ... [2024-10-11 23:57:37,182 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:37" (1/1) ... [2024-10-11 23:57:37,205 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-10-11 23:57:37,205 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:37" (1/1) ... [2024-10-11 23:57:37,206 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:37" (1/1) ... [2024-10-11 23:57:37,211 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:37" (1/1) ... [2024-10-11 23:57:37,214 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:37" (1/1) ... [2024-10-11 23:57:37,216 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:37" (1/1) ... [2024-10-11 23:57:37,219 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:37" (1/1) ... [2024-10-11 23:57:37,222 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 23:57:37,223 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 23:57:37,223 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 23:57:37,223 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 23:57:37,224 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:37" (1/1) ... [2024-10-11 23:57:37,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:57:37,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:57:37,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 23:57:37,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 23:57:37,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 23:57:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 23:57:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 23:57:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 23:57:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 23:57:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 23:57:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-11 23:57:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 23:57:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 23:57:37,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 23:57:37,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-11 23:57:37,307 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 23:57:37,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 23:57:37,307 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-11 23:57:37,307 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-11 23:57:37,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 23:57:37,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 23:57:37,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 23:57:37,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 23:57:37,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 23:57:37,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 23:57:37,310 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 23:57:37,430 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 23:57:37,432 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 23:57:37,633 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 23:57:37,633 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 23:57:37,803 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 23:57:37,803 INFO L314 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-11 23:57:37,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:57:37 BoogieIcfgContainer [2024-10-11 23:57:37,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 23:57:37,805 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 23:57:37,805 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 23:57:37,808 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 23:57:37,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 11:57:36" (1/3) ... [2024-10-11 23:57:37,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c038800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:57:37, skipping insertion in model container [2024-10-11 23:57:37,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:37" (2/3) ... [2024-10-11 23:57:37,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c038800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:57:37, skipping insertion in model container [2024-10-11 23:57:37,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:57:37" (3/3) ... [2024-10-11 23:57:37,810 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2024-10-11 23:57:37,823 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 23:57:37,823 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-11 23:57:37,823 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 23:57:37,856 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-11 23:57:37,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 67 transitions, 141 flow [2024-10-11 23:57:37,913 INFO L124 PetriNetUnfolderBase]: 17/89 cut-off events. [2024-10-11 23:57:37,913 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 23:57:37,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 89 events. 17/89 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 271 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 58. Up to 6 conditions per place. [2024-10-11 23:57:37,918 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 67 transitions, 141 flow [2024-10-11 23:57:37,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 66 transitions, 139 flow [2024-10-11 23:57:37,933 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:57:37,941 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;@23d136f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:57:37,941 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-11 23:57:37,947 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:57:37,947 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2024-10-11 23:57:37,947 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:57:37,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:37,948 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 23:57:37,949 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:57:37,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:37,953 INFO L85 PathProgramCache]: Analyzing trace with hash 379522226, now seen corresponding path program 1 times [2024-10-11 23:57:37,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:37,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165911071] [2024-10-11 23:57:37,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:37,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:57:38,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:38,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165911071] [2024-10-11 23:57:38,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165911071] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:38,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:57:38,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:57:38,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161871014] [2024-10-11 23:57:38,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:38,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:57:38,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:38,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:57:38,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:57:38,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 67 [2024-10-11 23:57:38,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 66 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:38,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:38,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 67 [2024-10-11 23:57:38,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:57:38,465 INFO L124 PetriNetUnfolderBase]: 159/431 cut-off events. [2024-10-11 23:57:38,465 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 23:57:38,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 431 events. 159/431 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2126 event pairs, 20 based on Foata normal form. 72/444 useless extension candidates. Maximal degree in co-relation 709. Up to 264 conditions per place. [2024-10-11 23:57:38,470 INFO L140 encePairwiseOnDemand]: 53/67 looper letters, 47 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2024-10-11 23:57:38,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 79 transitions, 265 flow [2024-10-11 23:57:38,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:57:38,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:57:38,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2024-10-11 23:57:38,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7052238805970149 [2024-10-11 23:57:38,484 INFO L175 Difference]: Start difference. First operand has 58 places, 66 transitions, 139 flow. Second operand 4 states and 189 transitions. [2024-10-11 23:57:38,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 79 transitions, 265 flow [2024-10-11 23:57:38,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 79 transitions, 265 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:57:38,491 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 129 flow [2024-10-11 23:57:38,492 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2024-10-11 23:57:38,500 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2024-10-11 23:57:38,501 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 129 flow [2024-10-11 23:57:38,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:38,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:38,501 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-11 23:57:38,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 23:57:38,501 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:57:38,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:38,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1993082579, now seen corresponding path program 1 times [2024-10-11 23:57:38,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:38,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218605434] [2024-10-11 23:57:38,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:38,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:57:38,532 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 23:57:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:57:38,579 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 23:57:38,581 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 23:57:38,583 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-10-11 23:57:38,585 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-10-11 23:57:38,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-10-11 23:57:38,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-10-11 23:57:38,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-10-11 23:57:38,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-10-11 23:57:38,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-10-11 23:57:38,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-10-11 23:57:38,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-10-11 23:57:38,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-10-11 23:57:38,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-10-11 23:57:38,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-10-11 23:57:38,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-10-11 23:57:38,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 23:57:38,590 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-11 23:57:38,593 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 23:57:38,593 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 23:57:38,614 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 23:57:38,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 100 transitions, 216 flow [2024-10-11 23:57:38,637 INFO L124 PetriNetUnfolderBase]: 30/163 cut-off events. [2024-10-11 23:57:38,637 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 23:57:38,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 163 events. 30/163 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 593 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 98. Up to 9 conditions per place. [2024-10-11 23:57:38,640 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 100 transitions, 216 flow [2024-10-11 23:57:38,643 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 100 transitions, 216 flow [2024-10-11 23:57:38,646 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:57:38,646 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;@23d136f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:57:38,647 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-11 23:57:38,649 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:57:38,650 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2024-10-11 23:57:38,650 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:57:38,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:38,650 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 23:57:38,650 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:57:38,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:38,651 INFO L85 PathProgramCache]: Analyzing trace with hash 474982517, now seen corresponding path program 1 times [2024-10-11 23:57:38,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:38,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403575182] [2024-10-11 23:57:38,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:38,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:57:38,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:38,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403575182] [2024-10-11 23:57:38,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403575182] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:38,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:57:38,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:57:38,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086855388] [2024-10-11 23:57:38,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:38,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:57:38,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:38,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:57:38,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:57:38,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 100 [2024-10-11 23:57:38,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 100 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:38,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:38,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 100 [2024-10-11 23:57:38,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:57:39,734 INFO L124 PetriNetUnfolderBase]: 4611/9735 cut-off events. [2024-10-11 23:57:39,735 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-10-11 23:57:39,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16808 conditions, 9735 events. 4611/9735 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 83375 event pairs, 1952 based on Foata normal form. 1699/10288 useless extension candidates. Maximal degree in co-relation 1345. Up to 6969 conditions per place. [2024-10-11 23:57:39,800 INFO L140 encePairwiseOnDemand]: 80/100 looper letters, 65 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2024-10-11 23:57:39,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 111 transitions, 374 flow [2024-10-11 23:57:39,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:57:39,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:57:39,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2024-10-11 23:57:39,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6725 [2024-10-11 23:57:39,805 INFO L175 Difference]: Start difference. First operand has 86 places, 100 transitions, 216 flow. Second operand 4 states and 269 transitions. [2024-10-11 23:57:39,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 111 transitions, 374 flow [2024-10-11 23:57:39,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 111 transitions, 374 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:57:39,809 INFO L231 Difference]: Finished difference. Result has 91 places, 88 transitions, 212 flow [2024-10-11 23:57:39,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=91, PETRI_TRANSITIONS=88} [2024-10-11 23:57:39,810 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 5 predicate places. [2024-10-11 23:57:39,810 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 88 transitions, 212 flow [2024-10-11 23:57:39,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:39,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:39,811 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 23:57:39,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 23:57:39,811 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:57:39,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:39,812 INFO L85 PathProgramCache]: Analyzing trace with hash -842024632, now seen corresponding path program 1 times [2024-10-11 23:57:39,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:39,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483044437] [2024-10-11 23:57:39,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:39,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:39,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:57:39,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:39,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483044437] [2024-10-11 23:57:39,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483044437] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:57:39,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552451381] [2024-10-11 23:57:39,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:39,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:57:39,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:57:39,970 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:57:39,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 23:57:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:40,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:57:40,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:57:40,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:57:40,113 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:57:40,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552451381] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:40,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:57:40,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-11 23:57:40,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944179011] [2024-10-11 23:57:40,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:40,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:57:40,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:40,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:57:40,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:57:40,127 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 100 [2024-10-11 23:57:40,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 88 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:40,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:40,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 100 [2024-10-11 23:57:40,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:57:40,911 INFO L124 PetriNetUnfolderBase]: 3957/8025 cut-off events. [2024-10-11 23:57:40,911 INFO L125 PetriNetUnfolderBase]: For 504/504 co-relation queries the response was YES. [2024-10-11 23:57:40,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14616 conditions, 8025 events. 3957/8025 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 64932 event pairs, 264 based on Foata normal form. 144/7265 useless extension candidates. Maximal degree in co-relation 1212. Up to 3893 conditions per place. [2024-10-11 23:57:40,973 INFO L140 encePairwiseOnDemand]: 95/100 looper letters, 105 selfloop transitions, 6 changer transitions 0/154 dead transitions. [2024-10-11 23:57:40,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 154 transitions, 564 flow [2024-10-11 23:57:40,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:57:40,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:57:40,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 370 transitions. [2024-10-11 23:57:40,975 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-10-11 23:57:40,976 INFO L175 Difference]: Start difference. First operand has 91 places, 88 transitions, 212 flow. Second operand 6 states and 370 transitions. [2024-10-11 23:57:40,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 154 transitions, 564 flow [2024-10-11 23:57:40,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 154 transitions, 562 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:57:40,980 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 218 flow [2024-10-11 23:57:40,981 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2024-10-11 23:57:40,981 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 8 predicate places. [2024-10-11 23:57:40,982 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 218 flow [2024-10-11 23:57:40,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:40,982 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:40,982 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:57:40,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 23:57:41,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:57:41,187 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:57:41,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:41,187 INFO L85 PathProgramCache]: Analyzing trace with hash -124472098, now seen corresponding path program 1 times [2024-10-11 23:57:41,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:41,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962837517] [2024-10-11 23:57:41,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:41,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:41,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:57:41,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:41,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962837517] [2024-10-11 23:57:41,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962837517] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:41,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:57:41,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:57:41,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190490881] [2024-10-11 23:57:41,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:41,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:57:41,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:41,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:57:41,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:57:41,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 100 [2024-10-11 23:57:41,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:41,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:41,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 100 [2024-10-11 23:57:41,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:57:42,294 INFO L124 PetriNetUnfolderBase]: 6320/12941 cut-off events. [2024-10-11 23:57:42,295 INFO L125 PetriNetUnfolderBase]: For 1175/1336 co-relation queries the response was YES. [2024-10-11 23:57:42,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23410 conditions, 12941 events. 6320/12941 cut-off events. For 1175/1336 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 112465 event pairs, 1495 based on Foata normal form. 222/11783 useless extension candidates. Maximal degree in co-relation 18886. Up to 6459 conditions per place. [2024-10-11 23:57:42,443 INFO L140 encePairwiseOnDemand]: 91/100 looper letters, 122 selfloop transitions, 12 changer transitions 0/178 dead transitions. [2024-10-11 23:57:42,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 178 transitions, 722 flow [2024-10-11 23:57:42,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 23:57:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 23:57:42,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 355 transitions. [2024-10-11 23:57:42,445 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71 [2024-10-11 23:57:42,445 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 218 flow. Second operand 5 states and 355 transitions. [2024-10-11 23:57:42,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 178 transitions, 722 flow [2024-10-11 23:57:42,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 178 transitions, 699 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-11 23:57:42,454 INFO L231 Difference]: Finished difference. Result has 98 places, 98 transitions, 300 flow [2024-10-11 23:57:42,455 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=98, PETRI_TRANSITIONS=98} [2024-10-11 23:57:42,456 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 12 predicate places. [2024-10-11 23:57:42,456 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 98 transitions, 300 flow [2024-10-11 23:57:42,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:42,457 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:42,457 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-10-11 23:57:42,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 23:57:42,457 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:57:42,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:42,458 INFO L85 PathProgramCache]: Analyzing trace with hash -332959344, now seen corresponding path program 1 times [2024-10-11 23:57:42,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:42,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375129630] [2024-10-11 23:57:42,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:42,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:42,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:57:42,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:42,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375129630] [2024-10-11 23:57:42,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375129630] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:42,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:57:42,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:57:42,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785571753] [2024-10-11 23:57:42,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:42,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:57:42,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:42,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:57:42,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:57:42,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 100 [2024-10-11 23:57:42,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 98 transitions, 300 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:42,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:42,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 100 [2024-10-11 23:57:42,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:57:43,392 INFO L124 PetriNetUnfolderBase]: 5565/11300 cut-off events. [2024-10-11 23:57:43,392 INFO L125 PetriNetUnfolderBase]: For 3880/3885 co-relation queries the response was YES. [2024-10-11 23:57:43,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22980 conditions, 11300 events. 5565/11300 cut-off events. For 3880/3885 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 94885 event pairs, 1085 based on Foata normal form. 160/10328 useless extension candidates. Maximal degree in co-relation 19721. Up to 7389 conditions per place. [2024-10-11 23:57:43,480 INFO L140 encePairwiseOnDemand]: 95/100 looper letters, 103 selfloop transitions, 6 changer transitions 0/152 dead transitions. [2024-10-11 23:57:43,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 152 transitions, 688 flow [2024-10-11 23:57:43,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:57:43,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:57:43,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 259 transitions. [2024-10-11 23:57:43,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6475 [2024-10-11 23:57:43,482 INFO L175 Difference]: Start difference. First operand has 98 places, 98 transitions, 300 flow. Second operand 4 states and 259 transitions. [2024-10-11 23:57:43,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 152 transitions, 688 flow [2024-10-11 23:57:43,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 152 transitions, 684 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 23:57:43,492 INFO L231 Difference]: Finished difference. Result has 100 places, 98 transitions, 312 flow [2024-10-11 23:57:43,492 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=312, PETRI_PLACES=100, PETRI_TRANSITIONS=98} [2024-10-11 23:57:43,493 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 14 predicate places. [2024-10-11 23:57:43,493 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 98 transitions, 312 flow [2024-10-11 23:57:43,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:43,494 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:43,494 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-10-11 23:57:43,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 23:57:43,494 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:57:43,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:43,495 INFO L85 PathProgramCache]: Analyzing trace with hash -2146333056, now seen corresponding path program 1 times [2024-10-11 23:57:43,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:43,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285128101] [2024-10-11 23:57:43,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:43,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:57:43,508 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 23:57:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:57:43,520 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 23:57:43,520 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 23:57:43,521 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-10-11 23:57:43,521 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-10-11 23:57:43,521 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-10-11 23:57:43,521 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-10-11 23:57:43,522 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-10-11 23:57:43,522 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-10-11 23:57:43,522 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-10-11 23:57:43,522 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-10-11 23:57:43,522 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-10-11 23:57:43,523 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-10-11 23:57:43,523 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-10-11 23:57:43,523 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-10-11 23:57:43,523 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-10-11 23:57:43,523 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-10-11 23:57:43,523 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-10-11 23:57:43,524 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-10-11 23:57:43,524 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-10-11 23:57:43,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 23:57:43,524 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-11 23:57:43,525 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 23:57:43,525 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-11 23:57:43,547 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 23:57:43,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 133 transitions, 293 flow [2024-10-11 23:57:43,570 INFO L124 PetriNetUnfolderBase]: 46/256 cut-off events. [2024-10-11 23:57:43,570 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-11 23:57:43,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 256 events. 46/256 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1036 event pairs, 1 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 178. Up to 12 conditions per place. [2024-10-11 23:57:43,572 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 133 transitions, 293 flow [2024-10-11 23:57:43,575 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 133 transitions, 293 flow [2024-10-11 23:57:43,576 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:57:43,576 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;@23d136f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:57:43,576 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-11 23:57:43,579 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:57:43,579 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2024-10-11 23:57:43,580 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:57:43,580 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:43,580 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 23:57:43,580 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-11 23:57:43,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:43,581 INFO L85 PathProgramCache]: Analyzing trace with hash 601934873, now seen corresponding path program 1 times [2024-10-11 23:57:43,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:43,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239241134] [2024-10-11 23:57:43,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:43,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:43,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:57:43,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:43,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239241134] [2024-10-11 23:57:43,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239241134] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:43,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:57:43,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:57:43,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008335042] [2024-10-11 23:57:43,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:43,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:57:43,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:43,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:57:43,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:57:43,633 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2024-10-11 23:57:43,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 133 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:43,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:43,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2024-10-11 23:57:43,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:57:54,185 INFO L124 PetriNetUnfolderBase]: 86447/153025 cut-off events. [2024-10-11 23:57:54,185 INFO L125 PetriNetUnfolderBase]: For 1911/1911 co-relation queries the response was YES. [2024-10-11 23:57:54,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271744 conditions, 153025 events. 86447/153025 cut-off events. For 1911/1911 co-relation queries the response was YES. Maximal size of possible extension queue 3550. Compared 1600832 event pairs, 52468 based on Foata normal form. 31112/168963 useless extension candidates. Maximal degree in co-relation 17771. Up to 117557 conditions per place. [2024-10-11 23:57:55,204 INFO L140 encePairwiseOnDemand]: 107/133 looper letters, 78 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2024-10-11 23:57:55,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 138 transitions, 465 flow [2024-10-11 23:57:55,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:57:55,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:57:55,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2024-10-11 23:57:55,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6466165413533834 [2024-10-11 23:57:55,207 INFO L175 Difference]: Start difference. First operand has 114 places, 133 transitions, 293 flow. Second operand 4 states and 344 transitions. [2024-10-11 23:57:55,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 138 transitions, 465 flow [2024-10-11 23:57:55,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 138 transitions, 465 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:57:55,213 INFO L231 Difference]: Finished difference. Result has 119 places, 115 transitions, 277 flow [2024-10-11 23:57:55,213 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=277, PETRI_PLACES=119, PETRI_TRANSITIONS=115} [2024-10-11 23:57:55,214 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 5 predicate places. [2024-10-11 23:57:55,215 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 115 transitions, 277 flow [2024-10-11 23:57:55,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:55,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:55,215 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 23:57:55,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 23:57:55,216 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-11 23:57:55,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:55,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1310171192, now seen corresponding path program 1 times [2024-10-11 23:57:55,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:55,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173634691] [2024-10-11 23:57:55,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:55,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:55,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:57:55,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:55,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173634691] [2024-10-11 23:57:55,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173634691] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:57:55,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684102721] [2024-10-11 23:57:55,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:55,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:57:55,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:57:55,288 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:57:55,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 23:57:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:55,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:57:55,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:57:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:57:55,392 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:57:55,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684102721] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:55,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:57:55,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-11 23:57:55,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941878699] [2024-10-11 23:57:55,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:55,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:57:55,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:55,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:57:55,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:57:55,401 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2024-10-11 23:57:55,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 115 transitions, 277 flow. Second operand has 6 states, 6 states have (on average 58.5) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:55,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:55,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2024-10-11 23:57:55,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:58:03,932 INFO L124 PetriNetUnfolderBase]: 71934/122935 cut-off events. [2024-10-11 23:58:03,932 INFO L125 PetriNetUnfolderBase]: For 7069/7069 co-relation queries the response was YES. [2024-10-11 23:58:04,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227553 conditions, 122935 events. 71934/122935 cut-off events. For 7069/7069 co-relation queries the response was YES. Maximal size of possible extension queue 2746. Compared 1214493 event pairs, 8196 based on Foata normal form. 1872/112848 useless extension candidates. Maximal degree in co-relation 19282. Up to 63134 conditions per place. [2024-10-11 23:58:04,819 INFO L140 encePairwiseOnDemand]: 128/133 looper letters, 140 selfloop transitions, 6 changer transitions 0/203 dead transitions. [2024-10-11 23:58:04,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 203 transitions, 743 flow [2024-10-11 23:58:04,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:58:04,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:58:04,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 489 transitions. [2024-10-11 23:58:04,822 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6127819548872181 [2024-10-11 23:58:04,822 INFO L175 Difference]: Start difference. First operand has 119 places, 115 transitions, 277 flow. Second operand 6 states and 489 transitions. [2024-10-11 23:58:04,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 203 transitions, 743 flow [2024-10-11 23:58:04,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 203 transitions, 741 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:58:04,830 INFO L231 Difference]: Finished difference. Result has 122 places, 114 transitions, 283 flow [2024-10-11 23:58:04,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=122, PETRI_TRANSITIONS=114} [2024-10-11 23:58:04,831 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 8 predicate places. [2024-10-11 23:58:04,832 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 114 transitions, 283 flow [2024-10-11 23:58:04,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.5) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:58:04,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:58:04,832 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:58:04,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 23:58:05,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:58:05,033 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-11 23:58:05,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:58:05,034 INFO L85 PathProgramCache]: Analyzing trace with hash 432179197, now seen corresponding path program 1 times [2024-10-11 23:58:05,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:58:05,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767881245] [2024-10-11 23:58:05,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:58:05,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:58:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:58:05,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:58:05,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:58:05,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767881245] [2024-10-11 23:58:05,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767881245] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:58:05,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:58:05,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:58:05,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106054457] [2024-10-11 23:58:05,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:58:05,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:58:05,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:58:05,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:58:05,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:58:05,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 133 [2024-10-11 23:58:05,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 114 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:58:05,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:58:05,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 133 [2024-10-11 23:58:05,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand