./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.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 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 23:49:08,053 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 23:49:08,123 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 23:49:08,131 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 23:49:08,132 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 23:49:08,161 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 23:49:08,163 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 23:49:08,163 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 23:49:08,164 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 23:49:08,165 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 23:49:08,165 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 23:49:08,166 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 23:49:08,166 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 23:49:08,168 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 23:49:08,169 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 23:49:08,169 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 23:49:08,169 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 23:49:08,170 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 23:49:08,170 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 23:49:08,170 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 23:49:08,170 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 23:49:08,171 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 23:49:08,171 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 23:49:08,175 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 23:49:08,175 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 23:49:08,175 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 23:49:08,175 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 23:49:08,175 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 23:49:08,176 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 23:49:08,176 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 23:49:08,176 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 23:49:08,176 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 23:49:08,176 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 23:49:08,176 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 23:49:08,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:49:08,177 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 23:49:08,177 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 23:49:08,177 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 23:49:08,177 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 23:49:08,178 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 23:49:08,178 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 23:49:08,179 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 23:49:08,180 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 23:49:08,180 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 23:49:08,180 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd [2024-10-11 23:49:08,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 23:49:08,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 23:49:08,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 23:49:08,447 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 23:49:08,447 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 23:49:08,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2024-10-11 23:49:09,966 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 23:49:10,192 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 23:49:10,193 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2024-10-11 23:49:10,211 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/da66353e8/acb99357cce041eaa90f38af3555c9d5/FLAG73fbfb4ca [2024-10-11 23:49:10,223 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/da66353e8/acb99357cce041eaa90f38af3555c9d5 [2024-10-11 23:49:10,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 23:49:10,226 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 23:49:10,230 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 23:49:10,230 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 23:49:10,234 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 23:49:10,235 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:49:10" (1/1) ... [2024-10-11 23:49:10,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7534fc0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:49:10, skipping insertion in model container [2024-10-11 23:49:10,235 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:49:10" (1/1) ... [2024-10-11 23:49:10,277 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 23:49:10,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:49:10,679 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 23:49:10,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:49:10,752 INFO L204 MainTranslator]: Completed translation [2024-10-11 23:49:10,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:49:10 WrapperNode [2024-10-11 23:49:10,753 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 23:49:10,754 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 23:49:10,754 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 23:49:10,754 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 23:49:10,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:49:10" (1/1) ... [2024-10-11 23:49:10,777 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:49:10" (1/1) ... [2024-10-11 23:49:10,805 INFO L138 Inliner]: procedures = 171, calls = 24, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 133 [2024-10-11 23:49:10,808 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 23:49:10,808 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 23:49:10,808 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 23:49:10,809 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 23:49:10,818 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:49:10" (1/1) ... [2024-10-11 23:49:10,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:49:10" (1/1) ... [2024-10-11 23:49:10,821 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:49:10" (1/1) ... [2024-10-11 23:49:10,843 INFO L175 MemorySlicer]: Split 15 memory accesses to 2 slices as follows [2, 13]. 87 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 6 writes are split as follows [0, 6]. [2024-10-11 23:49:10,844 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:49:10" (1/1) ... [2024-10-11 23:49:10,844 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:49:10" (1/1) ... [2024-10-11 23:49:10,852 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:49:10" (1/1) ... [2024-10-11 23:49:10,859 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:49:10" (1/1) ... [2024-10-11 23:49:10,861 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:49:10" (1/1) ... [2024-10-11 23:49:10,862 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:49:10" (1/1) ... [2024-10-11 23:49:10,864 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 23:49:10,868 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 23:49:10,868 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 23:49:10,869 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 23:49:10,870 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:49:10" (1/1) ... [2024-10-11 23:49:10,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:49:10,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:49:10,900 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 23:49:10,904 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 23:49:10,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 23:49:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 23:49:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-10-11 23:49:10,955 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-10-11 23:49:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-11 23:49:10,955 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-11 23:49:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 23:49:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 23:49:10,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 23:49:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 23:49:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 23:49:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 23:49:10,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 23:49:10,959 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 23:49:11,111 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 23:49:11,113 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 23:49:11,339 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 23:49:11,339 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 23:49:11,530 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 23:49:11,530 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 23:49:11,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:49:11 BoogieIcfgContainer [2024-10-11 23:49:11,531 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 23:49:11,533 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 23:49:11,534 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 23:49:11,537 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 23:49:11,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 11:49:10" (1/3) ... [2024-10-11 23:49:11,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24fd58cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:49:11, skipping insertion in model container [2024-10-11 23:49:11,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:49:10" (2/3) ... [2024-10-11 23:49:11,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24fd58cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:49:11, skipping insertion in model container [2024-10-11 23:49:11,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:49:11" (3/3) ... [2024-10-11 23:49:11,543 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2024-10-11 23:49:11,563 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 23:49:11,564 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-11 23:49:11,564 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 23:49:11,614 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 23:49:11,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 42 transitions, 92 flow [2024-10-11 23:49:11,694 INFO L124 PetriNetUnfolderBase]: 2/43 cut-off events. [2024-10-11 23:49:11,694 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:49:11,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 43 events. 2/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-10-11 23:49:11,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 42 transitions, 92 flow [2024-10-11 23:49:11,706 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 41 transitions, 89 flow [2024-10-11 23:49:11,717 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:49:11,726 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;@2f16de87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:49:11,728 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-11 23:49:11,737 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:49:11,738 INFO L124 PetriNetUnfolderBase]: 1/20 cut-off events. [2024-10-11 23:49:11,738 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:49:11,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:49:11,739 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-11 23:49:11,740 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-11 23:49:11,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:49:11,747 INFO L85 PathProgramCache]: Analyzing trace with hash 361603111, now seen corresponding path program 1 times [2024-10-11 23:49:11,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:49:11,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490463854] [2024-10-11 23:49:11,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:49:11,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:49:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:49:11,906 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 23:49:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:49:11,958 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 23:49:11,961 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 23:49:11,962 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-10-11 23:49:11,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2024-10-11 23:49:11,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2024-10-11 23:49:11,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2024-10-11 23:49:11,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2024-10-11 23:49:11,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2024-10-11 23:49:11,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2024-10-11 23:49:11,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2024-10-11 23:49:11,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2024-10-11 23:49:11,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2024-10-11 23:49:11,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2024-10-11 23:49:11,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2024-10-11 23:49:11,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2024-10-11 23:49:11,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2024-10-11 23:49:11,967 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2024-10-11 23:49:11,967 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2024-10-11 23:49:11,967 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2024-10-11 23:49:11,967 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2024-10-11 23:49:11,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 23:49:11,968 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-11 23:49:11,975 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 23:49:11,975 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 23:49:12,026 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 23:49:12,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 77 transitions, 174 flow [2024-10-11 23:49:12,059 INFO L124 PetriNetUnfolderBase]: 3/74 cut-off events. [2024-10-11 23:49:12,059 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 23:49:12,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 74 events. 3/74 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 153 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 81. Up to 3 conditions per place. [2024-10-11 23:49:12,061 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 77 transitions, 174 flow [2024-10-11 23:49:12,063 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 69 transitions, 151 flow [2024-10-11 23:49:12,066 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:49:12,067 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;@2f16de87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:49:12,068 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-10-11 23:49:12,079 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:49:12,079 INFO L124 PetriNetUnfolderBase]: 1/28 cut-off events. [2024-10-11 23:49:12,079 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 23:49:12,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:49:12,080 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:49:12,080 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-11 23:49:12,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:49:12,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1760407310, now seen corresponding path program 1 times [2024-10-11 23:49:12,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:49:12,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241468351] [2024-10-11 23:49:12,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:49:12,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:49:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:49:12,324 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 23:49:12,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:49:12,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241468351] [2024-10-11 23:49:12,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241468351] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:49:12,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:49:12,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:49:12,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864450] [2024-10-11 23:49:12,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:49:12,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:49:12,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:49:12,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:49:12,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:49:12,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 77 [2024-10-11 23:49:12,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 23:49:12,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:49:12,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 77 [2024-10-11 23:49:12,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:49:14,043 INFO L124 PetriNetUnfolderBase]: 7312/13296 cut-off events. [2024-10-11 23:49:14,044 INFO L125 PetriNetUnfolderBase]: For 206/206 co-relation queries the response was YES. [2024-10-11 23:49:14,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23587 conditions, 13296 events. 7312/13296 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 101389 event pairs, 1779 based on Foata normal form. 1606/13544 useless extension candidates. Maximal degree in co-relation 23576. Up to 7873 conditions per place. [2024-10-11 23:49:14,163 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 76 selfloop transitions, 6 changer transitions 0/111 dead transitions. [2024-10-11 23:49:14,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 111 transitions, 409 flow [2024-10-11 23:49:14,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 23:49:14,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 23:49:14,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 254 transitions. [2024-10-11 23:49:14,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6597402597402597 [2024-10-11 23:49:14,180 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 151 flow. Second operand 5 states and 254 transitions. [2024-10-11 23:49:14,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 111 transitions, 409 flow [2024-10-11 23:49:14,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 111 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:49:14,191 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 190 flow [2024-10-11 23:49:14,194 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=190, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2024-10-11 23:49:14,199 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 4 predicate places. [2024-10-11 23:49:14,199 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 190 flow [2024-10-11 23:49:14,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 23:49:14,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:49:14,200 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 23:49:14,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 23:49:14,200 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-11 23:49:14,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:49:14,201 INFO L85 PathProgramCache]: Analyzing trace with hash -86263328, now seen corresponding path program 1 times [2024-10-11 23:49:14,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:49:14,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519916368] [2024-10-11 23:49:14,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:49:14,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:49:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:49:14,219 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 23:49:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:49:14,243 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 23:49:14,243 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 23:49:14,243 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2024-10-11 23:49:14,243 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2024-10-11 23:49:14,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2024-10-11 23:49:14,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2024-10-11 23:49:14,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2024-10-11 23:49:14,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2024-10-11 23:49:14,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2024-10-11 23:49:14,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2024-10-11 23:49:14,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2024-10-11 23:49:14,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 26 remaining) [2024-10-11 23:49:14,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2024-10-11 23:49:14,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2024-10-11 23:49:14,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2024-10-11 23:49:14,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 26 remaining) [2024-10-11 23:49:14,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2024-10-11 23:49:14,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2024-10-11 23:49:14,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2024-10-11 23:49:14,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2024-10-11 23:49:14,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2024-10-11 23:49:14,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2024-10-11 23:49:14,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2024-10-11 23:49:14,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2024-10-11 23:49:14,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2024-10-11 23:49:14,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2024-10-11 23:49:14,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2024-10-11 23:49:14,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2024-10-11 23:49:14,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 23:49:14,249 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-11 23:49:14,250 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 23:49:14,250 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-11 23:49:14,309 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 23:49:14,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 112 transitions, 260 flow [2024-10-11 23:49:14,328 INFO L124 PetriNetUnfolderBase]: 4/105 cut-off events. [2024-10-11 23:49:14,328 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-11 23:49:14,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 105 events. 4/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 307 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 116. Up to 4 conditions per place. [2024-10-11 23:49:14,330 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 112 transitions, 260 flow [2024-10-11 23:49:14,331 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 97 transitions, 215 flow [2024-10-11 23:49:14,332 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:49:14,333 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;@2f16de87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:49:14,333 INFO L334 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2024-10-11 23:49:14,337 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:49:14,337 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2024-10-11 23:49:14,337 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 23:49:14,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:49:14,338 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:49:14,338 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-10-11 23:49:14,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:49:14,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1715660744, now seen corresponding path program 1 times [2024-10-11 23:49:14,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:49:14,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122645926] [2024-10-11 23:49:14,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:49:14,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:49:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:49:14,428 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 23:49:14,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:49:14,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122645926] [2024-10-11 23:49:14,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122645926] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:49:14,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:49:14,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:49:14,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303347767] [2024-10-11 23:49:14,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:49:14,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:49:14,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:49:14,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:49:14,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:49:14,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 112 [2024-10-11 23:49:14,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 97 transitions, 215 flow. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:49:14,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:49:14,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 112 [2024-10-11 23:49:14,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:49:30,539 INFO L124 PetriNetUnfolderBase]: 134380/216212 cut-off events. [2024-10-11 23:49:30,540 INFO L125 PetriNetUnfolderBase]: For 5734/5734 co-relation queries the response was YES. [2024-10-11 23:49:31,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387972 conditions, 216212 events. 134380/216212 cut-off events. For 5734/5734 co-relation queries the response was YES. Maximal size of possible extension queue 5865. Compared 2028812 event pairs, 32931 based on Foata normal form. 21136/214078 useless extension candidates. Maximal degree in co-relation 387960. Up to 146797 conditions per place. [2024-10-11 23:49:32,403 INFO L140 encePairwiseOnDemand]: 103/112 looper letters, 119 selfloop transitions, 8 changer transitions 0/171 dead transitions. [2024-10-11 23:49:32,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 171 transitions, 648 flow [2024-10-11 23:49:32,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 23:49:32,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 23:49:32,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 384 transitions. [2024-10-11 23:49:32,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-10-11 23:49:32,408 INFO L175 Difference]: Start difference. First operand has 103 places, 97 transitions, 215 flow. Second operand 5 states and 384 transitions. [2024-10-11 23:49:32,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 171 transitions, 648 flow [2024-10-11 23:49:32,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 171 transitions, 639 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-11 23:49:32,419 INFO L231 Difference]: Finished difference. Result has 107 places, 102 transitions, 269 flow [2024-10-11 23:49:32,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=107, PETRI_TRANSITIONS=102} [2024-10-11 23:49:32,420 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, 4 predicate places. [2024-10-11 23:49:32,420 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 102 transitions, 269 flow [2024-10-11 23:49:32,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:49:32,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:49:32,421 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:49:32,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 23:49:32,422 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-10-11 23:49:32,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:49:32,422 INFO L85 PathProgramCache]: Analyzing trace with hash 517487578, now seen corresponding path program 1 times [2024-10-11 23:49:32,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:49:32,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520437118] [2024-10-11 23:49:32,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:49:32,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:49:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:49:32,518 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 23:49:32,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:49:32,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520437118] [2024-10-11 23:49:32,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520437118] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:49:32,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:49:32,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:49:32,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147612420] [2024-10-11 23:49:32,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:49:32,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:49:32,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:49:32,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:49:32,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 23:49:32,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 112 [2024-10-11 23:49:32,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 102 transitions, 269 flow. Second operand has 5 states, 5 states have (on average 49.2) internal successors, (246), 5 states have internal predecessors, (246), 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 23:49:32,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:49:32,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 112 [2024-10-11 23:49:32,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:49:50,247 INFO L124 PetriNetUnfolderBase]: 157004/246588 cut-off events. [2024-10-11 23:49:50,248 INFO L125 PetriNetUnfolderBase]: For 35846/36470 co-relation queries the response was YES. [2024-10-11 23:49:51,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474568 conditions, 246588 events. 157004/246588 cut-off events. For 35846/36470 co-relation queries the response was YES. Maximal size of possible extension queue 6711. Compared 2276426 event pairs, 36063 based on Foata normal form. 2580/222298 useless extension candidates. Maximal degree in co-relation 474552. Up to 153025 conditions per place. [2024-10-11 23:49:52,528 INFO L140 encePairwiseOnDemand]: 104/112 looper letters, 152 selfloop transitions, 10 changer transitions 0/204 dead transitions. [2024-10-11 23:49:52,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 204 transitions, 848 flow [2024-10-11 23:49:52,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:49:52,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:49:52,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 445 transitions. [2024-10-11 23:49:52,532 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6622023809523809 [2024-10-11 23:49:52,532 INFO L175 Difference]: Start difference. First operand has 107 places, 102 transitions, 269 flow. Second operand 6 states and 445 transitions. [2024-10-11 23:49:52,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 204 transitions, 848 flow [2024-10-11 23:49:52,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 204 transitions, 848 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:49:52,831 INFO L231 Difference]: Finished difference. Result has 114 places, 104 transitions, 308 flow [2024-10-11 23:49:52,832 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=308, PETRI_PLACES=114, PETRI_TRANSITIONS=104} [2024-10-11 23:49:52,833 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, 11 predicate places. [2024-10-11 23:49:52,833 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 104 transitions, 308 flow [2024-10-11 23:49:52,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.2) internal successors, (246), 5 states have internal predecessors, (246), 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 23:49:52,833 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:49:52,834 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:49:52,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 23:49:52,834 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2024-10-11 23:49:52,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:49:52,835 INFO L85 PathProgramCache]: Analyzing trace with hash 101548567, now seen corresponding path program 1 times [2024-10-11 23:49:52,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:49:52,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111696441] [2024-10-11 23:49:52,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:49:52,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:49:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:49:52,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:49:52,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:49:52,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111696441] [2024-10-11 23:49:52,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111696441] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:49:52,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:49:52,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:49:52,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845308843] [2024-10-11 23:49:52,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:49:52,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:49:52,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:49:52,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:49:52,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:49:52,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 112 [2024-10-11 23:49:52,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 104 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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 23:49:52,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:49:52,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 112 [2024-10-11 23:49:52,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand