./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:40:12,723 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:40:12,811 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:40:12,815 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:40:12,819 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:40:12,846 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:40:12,847 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:40:12,847 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:40:12,848 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:40:12,848 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:40:12,849 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:40:12,849 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:40:12,850 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:40:12,850 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:40:12,852 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:40:12,853 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:40:12,853 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:40:12,854 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:40:12,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:40:12,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:40:12,855 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:40:12,855 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:40:12,856 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:40:12,856 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:40:12,856 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:40:12,857 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:40:12,857 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:40:12,857 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:40:12,857 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:40:12,858 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:40:12,858 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:40:12,858 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:40:12,859 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:40:12,859 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:40:12,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:40:12,860 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:40:12,860 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:40:12,861 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:40:12,861 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:40:12,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:40:12,861 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:40:12,862 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:40:12,862 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:40:12,862 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:40:12,863 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f [2024-10-24 23:40:13,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:40:13,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:40:13,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:40:13,130 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:40:13,130 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:40:13,131 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2024-10-24 23:40:14,630 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:40:14,805 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:40:14,806 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2024-10-24 23:40:14,813 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9a127e8c/80a69652dd8940b5aa647f5f9fbecc27/FLAG7e29976fe [2024-10-24 23:40:14,827 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9a127e8c/80a69652dd8940b5aa647f5f9fbecc27 [2024-10-24 23:40:14,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:40:14,831 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:40:14,833 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:40:14,833 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:40:14,839 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:40:14,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:40:14" (1/1) ... [2024-10-24 23:40:14,841 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14bfe6a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:14, skipping insertion in model container [2024-10-24 23:40:14,841 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:40:14" (1/1) ... [2024-10-24 23:40:14,862 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:40:15,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:40:15,097 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:40:15,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:40:15,145 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:40:15,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:15 WrapperNode [2024-10-24 23:40:15,146 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:40:15,147 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:40:15,147 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:40:15,148 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:40:15,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:15" (1/1) ... [2024-10-24 23:40:15,166 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:15" (1/1) ... [2024-10-24 23:40:15,198 INFO L138 Inliner]: procedures = 21, calls = 31, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 153 [2024-10-24 23:40:15,198 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:40:15,199 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:40:15,199 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:40:15,200 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:40:15,210 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:15" (1/1) ... [2024-10-24 23:40:15,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:15" (1/1) ... [2024-10-24 23:40:15,212 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:15" (1/1) ... [2024-10-24 23:40:15,231 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-24 23:40:15,231 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:15" (1/1) ... [2024-10-24 23:40:15,231 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:15" (1/1) ... [2024-10-24 23:40:15,236 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:15" (1/1) ... [2024-10-24 23:40:15,239 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:15" (1/1) ... [2024-10-24 23:40:15,240 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:15" (1/1) ... [2024-10-24 23:40:15,241 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:15" (1/1) ... [2024-10-24 23:40:15,243 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:40:15,244 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:40:15,244 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:40:15,245 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:40:15,245 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:15" (1/1) ... [2024-10-24 23:40:15,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:40:15,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:15,280 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 23:40:15,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 23:40:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:40:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 23:40:15,321 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 23:40:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 23:40:15,321 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 23:40:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 23:40:15,322 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 23:40:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:40:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 23:40:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 23:40:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:40:15,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:40:15,324 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:40:15,414 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:40:15,415 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:40:15,640 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:40:15,641 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:40:15,927 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:40:15,928 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 23:40:15,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:40:15 BoogieIcfgContainer [2024-10-24 23:40:15,929 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:40:15,932 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:40:15,932 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:40:15,935 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:40:15,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:40:14" (1/3) ... [2024-10-24 23:40:15,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b46fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:40:15, skipping insertion in model container [2024-10-24 23:40:15,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:15" (2/3) ... [2024-10-24 23:40:15,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b46fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:40:15, skipping insertion in model container [2024-10-24 23:40:15,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:40:15" (3/3) ... [2024-10-24 23:40:15,939 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2024-10-24 23:40:15,957 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:40:15,958 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-24 23:40:15,958 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:40:16,031 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 23:40:16,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 51 transitions, 123 flow [2024-10-24 23:40:16,102 INFO L124 PetriNetUnfolderBase]: 4/48 cut-off events. [2024-10-24 23:40:16,102 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 23:40:16,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 4/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 175 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-10-24 23:40:16,108 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 51 transitions, 123 flow [2024-10-24 23:40:16,111 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 45 transitions, 102 flow [2024-10-24 23:40:16,124 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:40:16,133 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;@7f153b35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:40:16,134 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2024-10-24 23:40:16,144 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:40:16,145 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-10-24 23:40:16,145 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 23:40:16,145 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:16,146 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:16,146 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-24 23:40:16,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:16,151 INFO L85 PathProgramCache]: Analyzing trace with hash -227874788, now seen corresponding path program 1 times [2024-10-24 23:40:16,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:16,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804054287] [2024-10-24 23:40:16,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:16,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:16,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:16,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:16,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804054287] [2024-10-24 23:40:16,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804054287] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:16,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:16,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:40:16,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155731477] [2024-10-24 23:40:16,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:16,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:40:16,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:16,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:40:16,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:40:16,513 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-24 23:40:16,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:16,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:16,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-24 23:40:16,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:17,231 INFO L124 PetriNetUnfolderBase]: 3956/5895 cut-off events. [2024-10-24 23:40:17,233 INFO L125 PetriNetUnfolderBase]: For 370/370 co-relation queries the response was YES. [2024-10-24 23:40:17,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12203 conditions, 5895 events. 3956/5895 cut-off events. For 370/370 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 35745 event pairs, 1293 based on Foata normal form. 0/3266 useless extension candidates. Maximal degree in co-relation 11894. Up to 3272 conditions per place. [2024-10-24 23:40:17,283 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 55 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2024-10-24 23:40:17,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 72 transitions, 293 flow [2024-10-24 23:40:17,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:40:17,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:40:17,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-10-24 23:40:17,295 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6862745098039216 [2024-10-24 23:40:17,297 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 102 flow. Second operand 3 states and 105 transitions. [2024-10-24 23:40:17,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 72 transitions, 293 flow [2024-10-24 23:40:17,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 72 transitions, 283 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 23:40:17,311 INFO L231 Difference]: Finished difference. Result has 49 places, 51 transitions, 168 flow [2024-10-24 23:40:17,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2024-10-24 23:40:17,318 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2024-10-24 23:40:17,318 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 168 flow [2024-10-24 23:40:17,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:17,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:17,319 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:17,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:40:17,319 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-24 23:40:17,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:17,320 INFO L85 PathProgramCache]: Analyzing trace with hash -227874751, now seen corresponding path program 1 times [2024-10-24 23:40:17,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:17,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647836326] [2024-10-24 23:40:17,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:17,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:17,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:17,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:17,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647836326] [2024-10-24 23:40:17,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647836326] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:17,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:17,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:40:17,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073937599] [2024-10-24 23:40:17,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:17,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:40:17,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:17,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:40:17,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:40:17,442 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-24 23:40:17,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:17,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:17,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-24 23:40:17,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:18,215 INFO L124 PetriNetUnfolderBase]: 5902/8593 cut-off events. [2024-10-24 23:40:18,215 INFO L125 PetriNetUnfolderBase]: For 1626/1626 co-relation queries the response was YES. [2024-10-24 23:40:18,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20433 conditions, 8593 events. 5902/8593 cut-off events. For 1626/1626 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 51562 event pairs, 1285 based on Foata normal form. 352/5994 useless extension candidates. Maximal degree in co-relation 17726. Up to 5702 conditions per place. [2024-10-24 23:40:18,281 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 65 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2024-10-24 23:40:18,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 84 transitions, 423 flow [2024-10-24 23:40:18,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:40:18,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:40:18,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-10-24 23:40:18,284 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6601307189542484 [2024-10-24 23:40:18,284 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 168 flow. Second operand 3 states and 101 transitions. [2024-10-24 23:40:18,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 84 transitions, 423 flow [2024-10-24 23:40:18,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 84 transitions, 397 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:40:18,324 INFO L231 Difference]: Finished difference. Result has 51 places, 61 transitions, 258 flow [2024-10-24 23:40:18,324 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=51, PETRI_TRANSITIONS=61} [2024-10-24 23:40:18,325 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-10-24 23:40:18,325 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 61 transitions, 258 flow [2024-10-24 23:40:18,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:18,326 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:18,326 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:18,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 23:40:18,327 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-24 23:40:18,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:18,328 INFO L85 PathProgramCache]: Analyzing trace with hash -227874749, now seen corresponding path program 1 times [2024-10-24 23:40:18,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:18,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662516676] [2024-10-24 23:40:18,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:18,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:18,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:18,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662516676] [2024-10-24 23:40:18,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662516676] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:18,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:18,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:40:18,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608146982] [2024-10-24 23:40:18,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:18,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:40:18,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:18,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:40:18,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:40:18,409 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-24 23:40:18,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 61 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:18,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:18,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-24 23:40:18,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:19,077 INFO L124 PetriNetUnfolderBase]: 5504/8013 cut-off events. [2024-10-24 23:40:19,078 INFO L125 PetriNetUnfolderBase]: For 2212/2212 co-relation queries the response was YES. [2024-10-24 23:40:19,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21509 conditions, 8013 events. 5504/8013 cut-off events. For 2212/2212 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 48137 event pairs, 3350 based on Foata normal form. 0/5618 useless extension candidates. Maximal degree in co-relation 18630. Up to 7747 conditions per place. [2024-10-24 23:40:19,137 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 50 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2024-10-24 23:40:19,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 59 transitions, 352 flow [2024-10-24 23:40:19,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:40:19,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:40:19,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-10-24 23:40:19,139 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-10-24 23:40:19,139 INFO L175 Difference]: Start difference. First operand has 51 places, 61 transitions, 258 flow. Second operand 3 states and 68 transitions. [2024-10-24 23:40:19,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 59 transitions, 352 flow [2024-10-24 23:40:19,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:40:19,171 INFO L231 Difference]: Finished difference. Result has 50 places, 59 transitions, 230 flow [2024-10-24 23:40:19,172 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=50, PETRI_TRANSITIONS=59} [2024-10-24 23:40:19,173 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2024-10-24 23:40:19,173 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 59 transitions, 230 flow [2024-10-24 23:40:19,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:19,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:19,173 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:19,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 23:40:19,173 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-24 23:40:19,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:19,175 INFO L85 PathProgramCache]: Analyzing trace with hash -227874786, now seen corresponding path program 1 times [2024-10-24 23:40:19,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:19,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202076686] [2024-10-24 23:40:19,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:19,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:19,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:19,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:19,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202076686] [2024-10-24 23:40:19,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202076686] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:19,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:19,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:40:19,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016899782] [2024-10-24 23:40:19,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:19,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:40:19,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:19,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:40:19,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:40:19,224 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-24 23:40:19,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 59 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:19,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:19,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-24 23:40:19,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:19,777 INFO L124 PetriNetUnfolderBase]: 5106/7449 cut-off events. [2024-10-24 23:40:19,777 INFO L125 PetriNetUnfolderBase]: For 1036/1036 co-relation queries the response was YES. [2024-10-24 23:40:19,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19159 conditions, 7449 events. 5106/7449 cut-off events. For 1036/1036 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 44440 event pairs, 3136 based on Foata normal form. 0/5063 useless extension candidates. Maximal degree in co-relation 19149. Up to 7195 conditions per place. [2024-10-24 23:40:19,821 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 48 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2024-10-24 23:40:19,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 57 transitions, 320 flow [2024-10-24 23:40:19,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:40:19,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:40:19,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-10-24 23:40:19,823 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43790849673202614 [2024-10-24 23:40:19,823 INFO L175 Difference]: Start difference. First operand has 50 places, 59 transitions, 230 flow. Second operand 3 states and 67 transitions. [2024-10-24 23:40:19,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 57 transitions, 320 flow [2024-10-24 23:40:19,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:40:19,825 INFO L231 Difference]: Finished difference. Result has 50 places, 57 transitions, 223 flow [2024-10-24 23:40:19,826 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=50, PETRI_TRANSITIONS=57} [2024-10-24 23:40:19,826 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2024-10-24 23:40:19,827 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 57 transitions, 223 flow [2024-10-24 23:40:19,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:19,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:19,827 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:19,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 23:40:19,828 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-24 23:40:19,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:19,828 INFO L85 PathProgramCache]: Analyzing trace with hash -227874785, now seen corresponding path program 1 times [2024-10-24 23:40:19,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:19,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986411199] [2024-10-24 23:40:19,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:19,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:19,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:19,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:19,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986411199] [2024-10-24 23:40:19,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986411199] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:19,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:19,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:40:19,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942273987] [2024-10-24 23:40:19,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:19,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:40:19,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:19,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:40:19,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:40:19,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-24 23:40:19,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 57 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:19,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:19,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-24 23:40:19,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:20,684 INFO L124 PetriNetUnfolderBase]: 6094/9139 cut-off events. [2024-10-24 23:40:20,684 INFO L125 PetriNetUnfolderBase]: For 1928/1928 co-relation queries the response was YES. [2024-10-24 23:40:20,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23650 conditions, 9139 events. 6094/9139 cut-off events. For 1928/1928 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 57878 event pairs, 2367 based on Foata normal form. 332/6702 useless extension candidates. Maximal degree in co-relation 23639. Up to 4976 conditions per place. [2024-10-24 23:40:20,760 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 85 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2024-10-24 23:40:20,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 96 transitions, 554 flow [2024-10-24 23:40:20,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:40:20,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:40:20,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-10-24 23:40:20,764 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6339869281045751 [2024-10-24 23:40:20,764 INFO L175 Difference]: Start difference. First operand has 50 places, 57 transitions, 223 flow. Second operand 3 states and 97 transitions. [2024-10-24 23:40:20,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 96 transitions, 554 flow [2024-10-24 23:40:20,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 96 transitions, 553 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:40:20,770 INFO L231 Difference]: Finished difference. Result has 52 places, 59 transitions, 259 flow [2024-10-24 23:40:20,771 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=52, PETRI_TRANSITIONS=59} [2024-10-24 23:40:20,772 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2024-10-24 23:40:20,774 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 59 transitions, 259 flow [2024-10-24 23:40:20,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:20,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:20,774 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:20,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 23:40:20,775 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-24 23:40:20,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:20,775 INFO L85 PathProgramCache]: Analyzing trace with hash -958908139, now seen corresponding path program 1 times [2024-10-24 23:40:20,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:20,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838161290] [2024-10-24 23:40:20,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:20,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:20,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:20,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:20,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838161290] [2024-10-24 23:40:20,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838161290] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:20,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:20,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:40:20,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539436068] [2024-10-24 23:40:20,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:20,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:40:20,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:20,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:40:20,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:40:20,862 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-24 23:40:20,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 59 transitions, 259 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:20,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:20,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-24 23:40:20,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:21,545 INFO L124 PetriNetUnfolderBase]: 6694/10149 cut-off events. [2024-10-24 23:40:21,546 INFO L125 PetriNetUnfolderBase]: For 3166/3166 co-relation queries the response was YES. [2024-10-24 23:40:21,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27746 conditions, 10149 events. 6694/10149 cut-off events. For 3166/3166 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 66089 event pairs, 1906 based on Foata normal form. 232/7367 useless extension candidates. Maximal degree in co-relation 27733. Up to 6461 conditions per place. [2024-10-24 23:40:21,653 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 83 selfloop transitions, 5 changer transitions 0/96 dead transitions. [2024-10-24 23:40:21,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 96 transitions, 610 flow [2024-10-24 23:40:21,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:40:21,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:40:21,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-10-24 23:40:21,656 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6209150326797386 [2024-10-24 23:40:21,656 INFO L175 Difference]: Start difference. First operand has 52 places, 59 transitions, 259 flow. Second operand 3 states and 95 transitions. [2024-10-24 23:40:21,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 96 transitions, 610 flow [2024-10-24 23:40:21,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 96 transitions, 605 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:40:21,661 INFO L231 Difference]: Finished difference. Result has 55 places, 63 transitions, 320 flow [2024-10-24 23:40:21,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=320, PETRI_PLACES=55, PETRI_TRANSITIONS=63} [2024-10-24 23:40:21,663 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2024-10-24 23:40:21,664 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 63 transitions, 320 flow [2024-10-24 23:40:21,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:21,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:21,665 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:21,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 23:40:21,665 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-24 23:40:21,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:21,666 INFO L85 PathProgramCache]: Analyzing trace with hash -958908140, now seen corresponding path program 1 times [2024-10-24 23:40:21,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:21,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142474819] [2024-10-24 23:40:21,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:21,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:21,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:21,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:21,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142474819] [2024-10-24 23:40:21,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142474819] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:21,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:21,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:40:21,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162172597] [2024-10-24 23:40:21,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:21,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:40:21,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:21,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:40:21,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:40:21,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-24 23:40:21,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 63 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:21,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:21,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-24 23:40:21,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:22,204 INFO L124 PetriNetUnfolderBase]: 6148/9389 cut-off events. [2024-10-24 23:40:22,204 INFO L125 PetriNetUnfolderBase]: For 5020/5020 co-relation queries the response was YES. [2024-10-24 23:40:22,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26881 conditions, 9389 events. 6148/9389 cut-off events. For 5020/5020 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 61811 event pairs, 4670 based on Foata normal form. 344/7141 useless extension candidates. Maximal degree in co-relation 26865. Up to 9089 conditions per place. [2024-10-24 23:40:22,269 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 50 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2024-10-24 23:40:22,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 394 flow [2024-10-24 23:40:22,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:40:22,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:40:22,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-10-24 23:40:22,271 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43137254901960786 [2024-10-24 23:40:22,271 INFO L175 Difference]: Start difference. First operand has 55 places, 63 transitions, 320 flow. Second operand 3 states and 66 transitions. [2024-10-24 23:40:22,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 394 flow [2024-10-24 23:40:22,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 59 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:40:22,275 INFO L231 Difference]: Finished difference. Result has 54 places, 59 transitions, 288 flow [2024-10-24 23:40:22,275 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=54, PETRI_TRANSITIONS=59} [2024-10-24 23:40:22,276 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2024-10-24 23:40:22,276 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 59 transitions, 288 flow [2024-10-24 23:40:22,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:22,277 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:22,277 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:22,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 23:40:22,277 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-24 23:40:22,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:22,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1967581049, now seen corresponding path program 1 times [2024-10-24 23:40:22,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:22,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006640065] [2024-10-24 23:40:22,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:22,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:22,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:22,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:22,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006640065] [2024-10-24 23:40:22,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006640065] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:22,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:22,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:40:22,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481513463] [2024-10-24 23:40:22,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:22,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:40:22,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:22,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:40:22,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:40:22,310 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-24 23:40:22,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:22,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:22,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-24 23:40:22,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:22,807 INFO L124 PetriNetUnfolderBase]: 5455/8364 cut-off events. [2024-10-24 23:40:22,807 INFO L125 PetriNetUnfolderBase]: For 3732/3732 co-relation queries the response was YES. [2024-10-24 23:40:22,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23119 conditions, 8364 events. 5455/8364 cut-off events. For 3732/3732 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 54802 event pairs, 4211 based on Foata normal form. 162/6270 useless extension candidates. Maximal degree in co-relation 23103. Up to 8082 conditions per place. [2024-10-24 23:40:22,856 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 46 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2024-10-24 23:40:22,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 55 transitions, 350 flow [2024-10-24 23:40:22,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:40:22,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:40:22,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-10-24 23:40:22,857 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42483660130718953 [2024-10-24 23:40:22,857 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 288 flow. Second operand 3 states and 65 transitions. [2024-10-24 23:40:22,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 55 transitions, 350 flow [2024-10-24 23:40:22,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 55 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:40:22,861 INFO L231 Difference]: Finished difference. Result has 53 places, 55 transitions, 257 flow [2024-10-24 23:40:22,861 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=257, PETRI_PLACES=53, PETRI_TRANSITIONS=55} [2024-10-24 23:40:22,861 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2024-10-24 23:40:22,862 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 257 flow [2024-10-24 23:40:22,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:22,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:22,865 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:22,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 23:40:22,865 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-24 23:40:22,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:22,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1967581013, now seen corresponding path program 1 times [2024-10-24 23:40:22,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:22,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614279568] [2024-10-24 23:40:22,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:22,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:22,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:22,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:22,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614279568] [2024-10-24 23:40:22,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614279568] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:22,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952691939] [2024-10-24 23:40:22,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:22,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:22,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:22,945 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:40:22,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:40:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:23,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:40:23,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:23,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:23,090 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:23,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:23,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952691939] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:23,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:23,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-10-24 23:40:23,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375512392] [2024-10-24 23:40:23,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:23,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 23:40:23,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:23,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 23:40:23,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-24 23:40:23,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-24 23:40:23,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 257 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:23,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:23,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-24 23:40:23,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:24,932 INFO L124 PetriNetUnfolderBase]: 17703/26404 cut-off events. [2024-10-24 23:40:24,932 INFO L125 PetriNetUnfolderBase]: For 12258/12258 co-relation queries the response was YES. [2024-10-24 23:40:24,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72600 conditions, 26404 events. 17703/26404 cut-off events. For 12258/12258 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 182917 event pairs, 660 based on Foata normal form. 538/20027 useless extension candidates. Maximal degree in co-relation 72583. Up to 6927 conditions per place. [2024-10-24 23:40:25,109 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 124 selfloop transitions, 61 changer transitions 0/193 dead transitions. [2024-10-24 23:40:25,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 193 transitions, 1196 flow [2024-10-24 23:40:25,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 23:40:25,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 23:40:25,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 236 transitions. [2024-10-24 23:40:25,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6610644257703081 [2024-10-24 23:40:25,111 INFO L175 Difference]: Start difference. First operand has 53 places, 55 transitions, 257 flow. Second operand 7 states and 236 transitions. [2024-10-24 23:40:25,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 193 transitions, 1196 flow [2024-10-24 23:40:25,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 193 transitions, 1195 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:40:25,115 INFO L231 Difference]: Finished difference. Result has 62 places, 109 transitions, 898 flow [2024-10-24 23:40:25,115 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=898, PETRI_PLACES=62, PETRI_TRANSITIONS=109} [2024-10-24 23:40:25,116 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2024-10-24 23:40:25,116 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 109 transitions, 898 flow [2024-10-24 23:40:25,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:25,117 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:25,117 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:25,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 23:40:25,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:25,322 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-24 23:40:25,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:25,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1967581015, now seen corresponding path program 1 times [2024-10-24 23:40:25,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:25,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999042742] [2024-10-24 23:40:25,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:25,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:25,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:25,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:25,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999042742] [2024-10-24 23:40:25,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999042742] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:25,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873280379] [2024-10-24 23:40:25,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:25,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:25,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:25,384 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:40:25,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:40:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:25,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:40:25,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:25,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:25,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:25,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:25,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873280379] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:25,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:25,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-10-24 23:40:25,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373543256] [2024-10-24 23:40:25,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:25,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 23:40:25,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:25,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 23:40:25,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:40:25,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-24 23:40:25,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 109 transitions, 898 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:25,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:25,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-24 23:40:25,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:29,977 INFO L124 PetriNetUnfolderBase]: 40352/60437 cut-off events. [2024-10-24 23:40:29,978 INFO L125 PetriNetUnfolderBase]: For 121372/121372 co-relation queries the response was YES. [2024-10-24 23:40:30,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206191 conditions, 60437 events. 40352/60437 cut-off events. For 121372/121372 co-relation queries the response was YES. Maximal size of possible extension queue 2310. Compared 461260 event pairs, 2578 based on Foata normal form. 550/46982 useless extension candidates. Maximal degree in co-relation 206169. Up to 13948 conditions per place. [2024-10-24 23:40:30,432 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 369 selfloop transitions, 130 changer transitions 0/507 dead transitions. [2024-10-24 23:40:30,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 507 transitions, 4939 flow [2024-10-24 23:40:30,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:40:30,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:40:30,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 343 transitions. [2024-10-24 23:40:30,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6725490196078432 [2024-10-24 23:40:30,434 INFO L175 Difference]: Start difference. First operand has 62 places, 109 transitions, 898 flow. Second operand 10 states and 343 transitions. [2024-10-24 23:40:30,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 507 transitions, 4939 flow [2024-10-24 23:40:31,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 507 transitions, 4781 flow, removed 79 selfloop flow, removed 0 redundant places. [2024-10-24 23:40:31,399 INFO L231 Difference]: Finished difference. Result has 79 places, 224 transitions, 2677 flow [2024-10-24 23:40:31,400 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2677, PETRI_PLACES=79, PETRI_TRANSITIONS=224} [2024-10-24 23:40:31,401 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 28 predicate places. [2024-10-24 23:40:31,401 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 224 transitions, 2677 flow [2024-10-24 23:40:31,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:31,401 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:31,401 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:31,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 23:40:31,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-24 23:40:31,603 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-24 23:40:31,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:31,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1071724147, now seen corresponding path program 1 times [2024-10-24 23:40:31,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:31,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993372233] [2024-10-24 23:40:31,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:31,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:31,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:31,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:31,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993372233] [2024-10-24 23:40:31,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993372233] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:40:31,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28919914] [2024-10-24 23:40:31,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:31,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:31,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:40:31,699 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:40:31,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 23:40:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:31,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:40:31,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:40:31,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:31,797 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:40:31,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:31,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28919914] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:40:31,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:40:31,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-10-24 23:40:31,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676427713] [2024-10-24 23:40:31,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:40:31,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 23:40:31,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:31,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 23:40:31,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-24 23:40:31,842 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-24 23:40:31,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 224 transitions, 2677 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:31,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:31,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-24 23:40:31,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:45,104 INFO L124 PetriNetUnfolderBase]: 84044/127977 cut-off events. [2024-10-24 23:40:45,105 INFO L125 PetriNetUnfolderBase]: For 563998/563998 co-relation queries the response was YES. [2024-10-24 23:40:45,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483145 conditions, 127977 events. 84044/127977 cut-off events. For 563998/563998 co-relation queries the response was YES. Maximal size of possible extension queue 3887. Compared 1086076 event pairs, 17744 based on Foata normal form. 1458/106317 useless extension candidates. Maximal degree in co-relation 483113. Up to 30891 conditions per place. [2024-10-24 23:40:46,515 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 703 selfloop transitions, 72 changer transitions 0/783 dead transitions. [2024-10-24 23:40:46,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 783 transitions, 11132 flow [2024-10-24 23:40:46,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:40:46,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:40:46,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2024-10-24 23:40:46,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6535947712418301 [2024-10-24 23:40:46,518 INFO L175 Difference]: Start difference. First operand has 79 places, 224 transitions, 2677 flow. Second operand 6 states and 200 transitions. [2024-10-24 23:40:46,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 783 transitions, 11132 flow [2024-10-24 23:40:59,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 783 transitions, 10753 flow, removed 188 selfloop flow, removed 1 redundant places. [2024-10-24 23:40:59,010 INFO L231 Difference]: Finished difference. Result has 87 places, 275 transitions, 3734 flow [2024-10-24 23:40:59,011 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2460, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3734, PETRI_PLACES=87, PETRI_TRANSITIONS=275} [2024-10-24 23:40:59,011 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 36 predicate places. [2024-10-24 23:40:59,011 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 275 transitions, 3734 flow [2024-10-24 23:40:59,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:59,012 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:59,012 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:59,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 23:40:59,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:40:59,217 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-24 23:40:59,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:59,217 INFO L85 PathProgramCache]: Analyzing trace with hash 555473072, now seen corresponding path program 1 times [2024-10-24 23:40:59,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:59,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613712202] [2024-10-24 23:40:59,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:59,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:59,253 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:40:59,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:59,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613712202] [2024-10-24 23:40:59,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613712202] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:59,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:59,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:40:59,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319015468] [2024-10-24 23:40:59,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:59,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:40:59,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:59,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:40:59,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:40:59,258 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-24 23:40:59,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 275 transitions, 3734 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:59,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:59,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-24 23:40:59,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:10,287 INFO L124 PetriNetUnfolderBase]: 65213/99458 cut-off events. [2024-10-24 23:41:10,288 INFO L125 PetriNetUnfolderBase]: For 616250/616250 co-relation queries the response was YES. [2024-10-24 23:41:10,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383148 conditions, 99458 events. 65213/99458 cut-off events. For 616250/616250 co-relation queries the response was YES. Maximal size of possible extension queue 3008. Compared 836098 event pairs, 47053 based on Foata normal form. 7150/88458 useless extension candidates. Maximal degree in co-relation 383111. Up to 94696 conditions per place. [2024-10-24 23:41:11,717 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 248 selfloop transitions, 1 changer transitions 0/257 dead transitions. [2024-10-24 23:41:11,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 257 transitions, 4048 flow [2024-10-24 23:41:11,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:41:11,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:41:11,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-10-24 23:41:11,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-10-24 23:41:11,720 INFO L175 Difference]: Start difference. First operand has 87 places, 275 transitions, 3734 flow. Second operand 3 states and 63 transitions. [2024-10-24 23:41:11,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 257 transitions, 4048 flow [2024-10-24 23:41:16,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 257 transitions, 4048 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:41:16,364 INFO L231 Difference]: Finished difference. Result has 87 places, 257 transitions, 3552 flow [2024-10-24 23:41:16,364 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3550, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3552, PETRI_PLACES=87, PETRI_TRANSITIONS=257} [2024-10-24 23:41:16,365 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 36 predicate places. [2024-10-24 23:41:16,365 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 257 transitions, 3552 flow [2024-10-24 23:41:16,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:16,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:16,365 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:16,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 23:41:16,366 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-24 23:41:16,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:16,366 INFO L85 PathProgramCache]: Analyzing trace with hash 170225164, now seen corresponding path program 1 times [2024-10-24 23:41:16,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:16,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643601208] [2024-10-24 23:41:16,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:16,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:16,432 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 23:41:16,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:16,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643601208] [2024-10-24 23:41:16,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643601208] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:16,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367787996] [2024-10-24 23:41:16,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:16,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:16,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:16,436 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:41:16,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 23:41:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:16,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:41:16,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:16,542 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 23:41:16,542 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:41:16,590 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 23:41:16,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367787996] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:41:16,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:41:16,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2024-10-24 23:41:16,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793516560] [2024-10-24 23:41:16,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:41:16,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:41:16,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:16,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:41:16,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 23:41:16,601 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-24 23:41:16,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 257 transitions, 3552 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:41:16,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:16,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-24 23:41:16,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand