./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/array-eq-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/array-eq-symm.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 6897befed0dbbae24492a1e82d50fcd0be6b3857b241d882a904d02a513d7a6d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:01:48,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:01:48,808 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:01:48,813 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:01:48,814 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:01:48,837 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:01:48,837 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:01:48,838 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:01:48,839 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:01:48,840 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:01:48,840 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:01:48,841 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:01:48,841 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:01:48,841 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:01:48,842 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:01:48,843 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:01:48,843 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:01:48,843 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:01:48,844 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:01:48,844 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:01:48,844 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:01:48,845 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:01:48,845 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:01:48,845 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:01:48,845 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:01:48,846 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:01:48,846 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:01:48,846 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:01:48,846 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:01:48,846 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:01:48,847 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:01:48,847 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:01:48,847 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:01:48,848 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:01:48,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:01:48,848 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:01:48,848 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:01:48,849 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:01:48,849 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:01:48,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:01:48,849 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:01:48,849 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:01:48,850 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:01:48,850 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:01:48,850 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6897befed0dbbae24492a1e82d50fcd0be6b3857b241d882a904d02a513d7a6d [2024-11-19 14:01:49,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:01:49,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:01:49,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:01:49,152 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:01:49,153 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:01:49,154 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2024-11-19 14:01:50,624 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:01:50,799 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:01:50,802 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2024-11-19 14:01:50,809 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e53d6c0dc/b7195fe18c15467fa0e58870f904c780/FLAGc016cf473 [2024-11-19 14:01:50,822 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e53d6c0dc/b7195fe18c15467fa0e58870f904c780 [2024-11-19 14:01:50,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:01:50,825 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:01:50,826 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:01:50,826 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:01:50,836 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:01:50,837 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:01:50" (1/1) ... [2024-11-19 14:01:50,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f69aa7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:50, skipping insertion in model container [2024-11-19 14:01:50,840 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:01:50" (1/1) ... [2024-11-19 14:01:50,861 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:01:51,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:01:51,109 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:01:51,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:01:51,152 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:01:51,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:51 WrapperNode [2024-11-19 14:01:51,153 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:01:51,154 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:01:51,154 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:01:51,154 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:01:51,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:51" (1/1) ... [2024-11-19 14:01:51,169 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:51" (1/1) ... [2024-11-19 14:01:51,192 INFO L138 Inliner]: procedures = 22, calls = 20, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 111 [2024-11-19 14:01:51,194 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:01:51,195 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:01:51,195 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:01:51,196 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:01:51,205 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:51" (1/1) ... [2024-11-19 14:01:51,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:51" (1/1) ... [2024-11-19 14:01:51,212 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:51" (1/1) ... [2024-11-19 14:01:51,225 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-19 14:01:51,225 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:51" (1/1) ... [2024-11-19 14:01:51,225 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:51" (1/1) ... [2024-11-19 14:01:51,230 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:51" (1/1) ... [2024-11-19 14:01:51,237 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:51" (1/1) ... [2024-11-19 14:01:51,238 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:51" (1/1) ... [2024-11-19 14:01:51,239 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:51" (1/1) ... [2024-11-19 14:01:51,242 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:01:51,245 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:01:51,247 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:01:51,248 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:01:51,249 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:51" (1/1) ... [2024-11-19 14:01:51,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:01:51,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:01:51,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 14:01:51,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 14:01:51,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:01:51,337 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:01:51,338 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:01:51,338 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:01:51,338 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:01:51,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:01:51,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:01:51,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:01:51,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:01:51,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:01:51,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:01:51,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:01:51,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:01:51,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:01:51,340 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:01:51,459 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:01:51,461 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:01:51,748 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:01:51,748 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:01:51,923 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:01:51,923 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 14:01:51,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:01:51 BoogieIcfgContainer [2024-11-19 14:01:51,926 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:01:51,928 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:01:51,929 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:01:51,932 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:01:51,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:01:50" (1/3) ... [2024-11-19 14:01:51,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f11687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:01:51, skipping insertion in model container [2024-11-19 14:01:51,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:51" (2/3) ... [2024-11-19 14:01:51,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f11687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:01:51, skipping insertion in model container [2024-11-19 14:01:51,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:01:51" (3/3) ... [2024-11-19 14:01:51,938 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2024-11-19 14:01:51,954 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:01:51,954 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-19 14:01:51,955 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:01:52,015 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 14:01:52,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 42 transitions, 98 flow [2024-11-19 14:01:52,099 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2024-11-19 14:01:52,099 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 14:01:52,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 40 events. 6/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-19 14:01:52,102 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 42 transitions, 98 flow [2024-11-19 14:01:52,106 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 85 flow [2024-11-19 14:01:52,121 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:01:52,127 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;@573fcf55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:01:52,127 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-19 14:01:52,130 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:01:52,130 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:01:52,131 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:01:52,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:01:52,131 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:01:52,132 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-19 14:01:52,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:01:52,136 INFO L85 PathProgramCache]: Analyzing trace with hash 466594, now seen corresponding path program 1 times [2024-11-19 14:01:52,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:01:52,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966192166] [2024-11-19 14:01:52,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:01:52,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:01:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:01:52,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:01:52,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:01:52,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966192166] [2024-11-19 14:01:52,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966192166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:01:52,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:01:52,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:01:52,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720095397] [2024-11-19 14:01:52,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:01:52,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:01:52,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:01:52,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:01:52,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:01:52,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-11-19 14:01:52,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:52,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:01:52,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-11-19 14:01:52,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:01:52,582 INFO L124 PetriNetUnfolderBase]: 170/329 cut-off events. [2024-11-19 14:01:52,582 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-19 14:01:52,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 329 events. 170/329 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1413 event pairs, 92 based on Foata normal form. 2/231 useless extension candidates. Maximal degree in co-relation 554. Up to 256 conditions per place. [2024-11-19 14:01:52,588 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 20 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2024-11-19 14:01:52,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 133 flow [2024-11-19 14:01:52,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:01:52,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:01:52,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2024-11-19 14:01:52,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-11-19 14:01:52,630 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 85 flow. Second operand 4 states and 76 transitions. [2024-11-19 14:01:52,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 133 flow [2024-11-19 14:01:52,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 36 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:01:52,639 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 88 flow [2024-11-19 14:01:52,645 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2024-11-19 14:01:52,653 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2024-11-19 14:01:52,653 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 88 flow [2024-11-19 14:01:52,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:52,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:01:52,676 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-19 14:01:52,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:01:52,676 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-19 14:01:52,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:01:52,677 INFO L85 PathProgramCache]: Analyzing trace with hash 14464846, now seen corresponding path program 1 times [2024-11-19 14:01:52,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:01:52,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833012018] [2024-11-19 14:01:52,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:01:52,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:01:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:01:52,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:01:52,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:01:52,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833012018] [2024-11-19 14:01:52,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833012018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:01:52,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:01:52,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:01:52,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828572031] [2024-11-19 14:01:52,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:01:52,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:01:52,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:01:52,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:01:52,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:01:52,784 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-11-19 14:01:52,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:52,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:01:52,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-11-19 14:01:52,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:01:52,936 INFO L124 PetriNetUnfolderBase]: 172/337 cut-off events. [2024-11-19 14:01:52,936 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-19 14:01:52,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 337 events. 172/337 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1444 event pairs, 92 based on Foata normal form. 2/241 useless extension candidates. Maximal degree in co-relation 585. Up to 265 conditions per place. [2024-11-19 14:01:52,939 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 25 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-11-19 14:01:52,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 174 flow [2024-11-19 14:01:52,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:01:52,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:01:52,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-11-19 14:01:52,941 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-11-19 14:01:52,941 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 88 flow. Second operand 4 states and 82 transitions. [2024-11-19 14:01:52,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 174 flow [2024-11-19 14:01:52,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 152 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:01:52,943 INFO L231 Difference]: Finished difference. Result has 40 places, 42 transitions, 132 flow [2024-11-19 14:01:52,943 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=40, PETRI_TRANSITIONS=42} [2024-11-19 14:01:52,944 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2024-11-19 14:01:52,944 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 42 transitions, 132 flow [2024-11-19 14:01:52,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:52,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:01:52,944 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:01:52,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 14:01:52,945 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-19 14:01:52,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:01:52,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1425960662, now seen corresponding path program 1 times [2024-11-19 14:01:52,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:01:52,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479091152] [2024-11-19 14:01:52,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:01:52,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:01:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:01:53,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:01:53,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:01:53,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479091152] [2024-11-19 14:01:53,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479091152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:01:53,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408699902] [2024-11-19 14:01:53,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:01:53,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:01:53,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:01:53,064 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:01:53,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:01:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:01:53,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:01:53,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:01:53,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:01:53,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:01:53,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:01:53,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408699902] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:01:53,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:01:53,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-19 14:01:53,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596083440] [2024-11-19 14:01:53,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:01:53,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 14:01:53,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:01:53,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 14:01:53,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-19 14:01:53,228 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-11-19 14:01:53,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 42 transitions, 132 flow. Second operand has 10 states, 10 states have (on average 13.0) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:53,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:01:53,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-11-19 14:01:53,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:01:53,399 INFO L124 PetriNetUnfolderBase]: 178/361 cut-off events. [2024-11-19 14:01:53,400 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-19 14:01:53,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709 conditions, 361 events. 178/361 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1631 event pairs, 92 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 596. Up to 268 conditions per place. [2024-11-19 14:01:53,402 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 25 selfloop transitions, 25 changer transitions 0/60 dead transitions. [2024-11-19 14:01:53,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 60 transitions, 310 flow [2024-11-19 14:01:53,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:01:53,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:01:53,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-11-19 14:01:53,404 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-11-19 14:01:53,404 INFO L175 Difference]: Start difference. First operand has 40 places, 42 transitions, 132 flow. Second operand 10 states and 176 transitions. [2024-11-19 14:01:53,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 60 transitions, 310 flow [2024-11-19 14:01:53,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 60 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:01:53,406 INFO L231 Difference]: Finished difference. Result has 52 places, 60 transitions, 294 flow [2024-11-19 14:01:53,406 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=294, PETRI_PLACES=52, PETRI_TRANSITIONS=60} [2024-11-19 14:01:53,408 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2024-11-19 14:01:53,409 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 60 transitions, 294 flow [2024-11-19 14:01:53,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.0) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:53,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:01:53,409 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:01:53,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 14:01:53,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:01:53,610 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-19 14:01:53,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:01:53,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1837290423, now seen corresponding path program 1 times [2024-11-19 14:01:53,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:01:53,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696289513] [2024-11-19 14:01:53,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:01:53,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:01:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:01:53,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:01:53,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:01:53,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696289513] [2024-11-19 14:01:53,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696289513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:01:53,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:01:53,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:01:53,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191563391] [2024-11-19 14:01:53,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:01:53,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:01:53,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:01:53,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:01:53,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:01:53,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-11-19 14:01:53,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 60 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:53,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:01:53,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-11-19 14:01:53,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:01:53,748 INFO L124 PetriNetUnfolderBase]: 202/382 cut-off events. [2024-11-19 14:01:53,748 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-11-19 14:01:53,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 382 events. 202/382 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1651 event pairs, 75 based on Foata normal form. 14/289 useless extension candidates. Maximal degree in co-relation 748. Up to 248 conditions per place. [2024-11-19 14:01:53,751 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 55 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2024-11-19 14:01:53,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 428 flow [2024-11-19 14:01:53,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:01:53,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:01:53,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-19 14:01:53,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-19 14:01:53,753 INFO L175 Difference]: Start difference. First operand has 52 places, 60 transitions, 294 flow. Second operand 4 states and 91 transitions. [2024-11-19 14:01:53,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 428 flow [2024-11-19 14:01:53,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 68 transitions, 364 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-11-19 14:01:53,757 INFO L231 Difference]: Finished difference. Result has 50 places, 59 transitions, 234 flow [2024-11-19 14:01:53,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=50, PETRI_TRANSITIONS=59} [2024-11-19 14:01:53,758 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 11 predicate places. [2024-11-19 14:01:53,758 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 59 transitions, 234 flow [2024-11-19 14:01:53,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:53,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:01:53,758 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:01:53,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:01:53,758 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-19 14:01:53,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:01:53,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1121427785, now seen corresponding path program 1 times [2024-11-19 14:01:53,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:01:53,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649013048] [2024-11-19 14:01:53,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:01:53,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:01:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:01:53,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:01:53,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:01:53,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649013048] [2024-11-19 14:01:53,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649013048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:01:53,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:01:53,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:01:53,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573962367] [2024-11-19 14:01:53,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:01:53,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:01:53,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:01:53,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:01:53,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:01:53,807 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-11-19 14:01:53,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 59 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:53,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:01:53,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-11-19 14:01:53,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:01:53,922 INFO L124 PetriNetUnfolderBase]: 308/559 cut-off events. [2024-11-19 14:01:53,923 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-11-19 14:01:53,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 559 events. 308/559 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2444 event pairs, 58 based on Foata normal form. 14/466 useless extension candidates. Maximal degree in co-relation 1135. Up to 271 conditions per place. [2024-11-19 14:01:53,926 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 71 selfloop transitions, 3 changer transitions 0/84 dead transitions. [2024-11-19 14:01:53,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 84 transitions, 441 flow [2024-11-19 14:01:53,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:01:53,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:01:53,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-11-19 14:01:53,928 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6369047619047619 [2024-11-19 14:01:53,928 INFO L175 Difference]: Start difference. First operand has 50 places, 59 transitions, 234 flow. Second operand 4 states and 107 transitions. [2024-11-19 14:01:53,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 84 transitions, 441 flow [2024-11-19 14:01:53,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 84 transitions, 431 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:01:53,933 INFO L231 Difference]: Finished difference. Result has 52 places, 61 transitions, 248 flow [2024-11-19 14:01:53,933 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=52, PETRI_TRANSITIONS=61} [2024-11-19 14:01:53,933 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2024-11-19 14:01:53,933 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 61 transitions, 248 flow [2024-11-19 14:01:53,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:53,934 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:01:53,934 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:01:53,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:01:53,934 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-19 14:01:53,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:01:53,934 INFO L85 PathProgramCache]: Analyzing trace with hash -586243611, now seen corresponding path program 1 times [2024-11-19 14:01:53,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:01:53,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897064599] [2024-11-19 14:01:53,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:01:53,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:01:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:01:54,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:01:54,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:01:54,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897064599] [2024-11-19 14:01:54,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897064599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:01:54,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:01:54,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:01:54,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363765561] [2024-11-19 14:01:54,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:01:54,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:01:54,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:01:54,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:01:54,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:01:54,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-11-19 14:01:54,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 61 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:54,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:01:54,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-11-19 14:01:54,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:01:54,143 INFO L124 PetriNetUnfolderBase]: 511/904 cut-off events. [2024-11-19 14:01:54,143 INFO L125 PetriNetUnfolderBase]: For 195/209 co-relation queries the response was YES. [2024-11-19 14:01:54,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1972 conditions, 904 events. 511/904 cut-off events. For 195/209 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4207 event pairs, 117 based on Foata normal form. 22/761 useless extension candidates. Maximal degree in co-relation 1913. Up to 451 conditions per place. [2024-11-19 14:01:54,148 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 75 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2024-11-19 14:01:54,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 87 transitions, 480 flow [2024-11-19 14:01:54,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:01:54,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:01:54,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-11-19 14:01:54,149 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2024-11-19 14:01:54,150 INFO L175 Difference]: Start difference. First operand has 52 places, 61 transitions, 248 flow. Second operand 4 states and 106 transitions. [2024-11-19 14:01:54,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 87 transitions, 480 flow [2024-11-19 14:01:54,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 87 transitions, 476 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:01:54,152 INFO L231 Difference]: Finished difference. Result has 56 places, 63 transitions, 268 flow [2024-11-19 14:01:54,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=56, PETRI_TRANSITIONS=63} [2024-11-19 14:01:54,153 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 17 predicate places. [2024-11-19 14:01:54,153 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 63 transitions, 268 flow [2024-11-19 14:01:54,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:54,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:01:54,153 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:01:54,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:01:54,154 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-19 14:01:54,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:01:54,154 INFO L85 PathProgramCache]: Analyzing trace with hash 549054843, now seen corresponding path program 1 times [2024-11-19 14:01:54,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:01:54,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903362198] [2024-11-19 14:01:54,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:01:54,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:01:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:01:54,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:01:54,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:01:54,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903362198] [2024-11-19 14:01:54,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903362198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:01:54,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:01:54,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:01:54,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142911368] [2024-11-19 14:01:54,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:01:54,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:01:54,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:01:54,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:01:54,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:01:54,199 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-11-19 14:01:54,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 63 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:54,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:01:54,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-11-19 14:01:54,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:01:54,303 INFO L124 PetriNetUnfolderBase]: 542/1071 cut-off events. [2024-11-19 14:01:54,303 INFO L125 PetriNetUnfolderBase]: For 332/332 co-relation queries the response was YES. [2024-11-19 14:01:54,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2443 conditions, 1071 events. 542/1071 cut-off events. For 332/332 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5594 event pairs, 375 based on Foata normal form. 0/962 useless extension candidates. Maximal degree in co-relation 2358. Up to 698 conditions per place. [2024-11-19 14:01:54,307 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 66 selfloop transitions, 13 changer transitions 3/93 dead transitions. [2024-11-19 14:01:54,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 93 transitions, 549 flow [2024-11-19 14:01:54,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:01:54,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:01:54,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-11-19 14:01:54,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-19 14:01:54,309 INFO L175 Difference]: Start difference. First operand has 56 places, 63 transitions, 268 flow. Second operand 5 states and 126 transitions. [2024-11-19 14:01:54,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 93 transitions, 549 flow [2024-11-19 14:01:54,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 93 transitions, 546 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:01:54,311 INFO L231 Difference]: Finished difference. Result has 61 places, 73 transitions, 386 flow [2024-11-19 14:01:54,311 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=386, PETRI_PLACES=61, PETRI_TRANSITIONS=73} [2024-11-19 14:01:54,312 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 22 predicate places. [2024-11-19 14:01:54,312 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 73 transitions, 386 flow [2024-11-19 14:01:54,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:54,312 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:01:54,312 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:01:54,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 14:01:54,313 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-19 14:01:54,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:01:54,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1873333471, now seen corresponding path program 1 times [2024-11-19 14:01:54,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:01:54,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428110737] [2024-11-19 14:01:54,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:01:54,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:01:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:01:54,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:01:54,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:01:54,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428110737] [2024-11-19 14:01:54,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428110737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:01:54,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:01:54,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:01:54,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198407937] [2024-11-19 14:01:54,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:01:54,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:01:54,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:01:54,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:01:54,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:01:54,396 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-11-19 14:01:54,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 73 transitions, 386 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:54,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:01:54,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-11-19 14:01:54,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:01:54,519 INFO L124 PetriNetUnfolderBase]: 465/918 cut-off events. [2024-11-19 14:01:54,520 INFO L125 PetriNetUnfolderBase]: For 381/381 co-relation queries the response was YES. [2024-11-19 14:01:54,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2165 conditions, 918 events. 465/918 cut-off events. For 381/381 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4557 event pairs, 319 based on Foata normal form. 0/869 useless extension candidates. Maximal degree in co-relation 2066. Up to 698 conditions per place. [2024-11-19 14:01:54,524 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 50 selfloop transitions, 12 changer transitions 14/87 dead transitions. [2024-11-19 14:01:54,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 87 transitions, 581 flow [2024-11-19 14:01:54,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:01:54,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:01:54,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-11-19 14:01:54,527 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2024-11-19 14:01:54,527 INFO L175 Difference]: Start difference. First operand has 61 places, 73 transitions, 386 flow. Second operand 5 states and 122 transitions. [2024-11-19 14:01:54,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 87 transitions, 581 flow [2024-11-19 14:01:54,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 87 transitions, 577 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 14:01:54,535 INFO L231 Difference]: Finished difference. Result has 65 places, 72 transitions, 408 flow [2024-11-19 14:01:54,537 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=408, PETRI_PLACES=65, PETRI_TRANSITIONS=72} [2024-11-19 14:01:54,537 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2024-11-19 14:01:54,538 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 72 transitions, 408 flow [2024-11-19 14:01:54,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:54,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:01:54,538 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-19 14:01:54,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 14:01:54,539 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-19 14:01:54,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:01:54,539 INFO L85 PathProgramCache]: Analyzing trace with hash -2104009394, now seen corresponding path program 2 times [2024-11-19 14:01:54,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:01:54,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878366642] [2024-11-19 14:01:54,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:01:54,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:01:54,555 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:01:54,555 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:01:54,591 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:01:54,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:01:54,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878366642] [2024-11-19 14:01:54,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878366642] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:01:54,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694004560] [2024-11-19 14:01:54,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:01:54,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:01:54,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:01:54,593 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:01:54,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:01:54,664 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:01:54,664 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:01:54,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:01:54,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:01:54,698 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:01:54,698 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:01:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:01:54,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694004560] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:01:54,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:01:54,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-19 14:01:54,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490454455] [2024-11-19 14:01:54,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:01:54,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:01:54,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:01:54,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:01:54,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:01:54,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-11-19 14:01:54,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 72 transitions, 408 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:54,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:01:54,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-11-19 14:01:54,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:01:54,817 INFO L124 PetriNetUnfolderBase]: 464/919 cut-off events. [2024-11-19 14:01:54,817 INFO L125 PetriNetUnfolderBase]: For 465/465 co-relation queries the response was YES. [2024-11-19 14:01:54,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2219 conditions, 919 events. 464/919 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4680 event pairs, 319 based on Foata normal form. 1/916 useless extension candidates. Maximal degree in co-relation 2116. Up to 755 conditions per place. [2024-11-19 14:01:54,820 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 46 selfloop transitions, 16 changer transitions 0/71 dead transitions. [2024-11-19 14:01:54,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 71 transitions, 522 flow [2024-11-19 14:01:54,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:01:54,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:01:54,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-11-19 14:01:54,821 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-11-19 14:01:54,821 INFO L175 Difference]: Start difference. First operand has 65 places, 72 transitions, 408 flow. Second operand 4 states and 74 transitions. [2024-11-19 14:01:54,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 71 transitions, 522 flow [2024-11-19 14:01:54,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 71 transitions, 489 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 14:01:54,824 INFO L231 Difference]: Finished difference. Result has 62 places, 71 transitions, 397 flow [2024-11-19 14:01:54,824 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=397, PETRI_PLACES=62, PETRI_TRANSITIONS=71} [2024-11-19 14:01:54,825 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 23 predicate places. [2024-11-19 14:01:54,826 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 71 transitions, 397 flow [2024-11-19 14:01:54,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:54,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:01:54,826 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:01:54,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 14:01:55,026 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,SelfDestructingSolverStorable8 [2024-11-19 14:01:55,028 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-19 14:01:55,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:01:55,028 INFO L85 PathProgramCache]: Analyzing trace with hash 681192179, now seen corresponding path program 1 times [2024-11-19 14:01:55,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:01:55,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032780920] [2024-11-19 14:01:55,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:01:55,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:01:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:01:55,111 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 14:01:55,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:01:55,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032780920] [2024-11-19 14:01:55,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032780920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:01:55,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:01:55,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:01:55,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645987063] [2024-11-19 14:01:55,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:01:55,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:01:55,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:01:55,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:01:55,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:01:55,114 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-11-19 14:01:55,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 71 transitions, 397 flow. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:55,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:01:55,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-11-19 14:01:55,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:01:55,284 INFO L124 PetriNetUnfolderBase]: 562/1090 cut-off events. [2024-11-19 14:01:55,284 INFO L125 PetriNetUnfolderBase]: For 465/487 co-relation queries the response was YES. [2024-11-19 14:01:55,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2612 conditions, 1090 events. 562/1090 cut-off events. For 465/487 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5574 event pairs, 238 based on Foata normal form. 22/1108 useless extension candidates. Maximal degree in co-relation 2511. Up to 399 conditions per place. [2024-11-19 14:01:55,289 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 79 selfloop transitions, 10 changer transitions 3/102 dead transitions. [2024-11-19 14:01:55,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 102 transitions, 676 flow [2024-11-19 14:01:55,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:01:55,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:01:55,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-11-19 14:01:55,290 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6523809523809524 [2024-11-19 14:01:55,290 INFO L175 Difference]: Start difference. First operand has 62 places, 71 transitions, 397 flow. Second operand 5 states and 137 transitions. [2024-11-19 14:01:55,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 102 transitions, 676 flow [2024-11-19 14:01:55,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 102 transitions, 644 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:01:55,293 INFO L231 Difference]: Finished difference. Result has 64 places, 71 transitions, 388 flow [2024-11-19 14:01:55,294 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=388, PETRI_PLACES=64, PETRI_TRANSITIONS=71} [2024-11-19 14:01:55,294 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2024-11-19 14:01:55,294 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 71 transitions, 388 flow [2024-11-19 14:01:55,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:55,295 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:01:55,295 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2024-11-19 14:01:55,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 14:01:55,295 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-19 14:01:55,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:01:55,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1053731220, now seen corresponding path program 1 times [2024-11-19 14:01:55,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:01:55,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980963977] [2024-11-19 14:01:55,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:01:55,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:01:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:01:55,429 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:01:55,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:01:55,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980963977] [2024-11-19 14:01:55,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980963977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:01:55,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967284782] [2024-11-19 14:01:55,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:01:55,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:01:55,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:01:55,436 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:01:55,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:01:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:01:55,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 14:01:55,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:01:55,539 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:01:55,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:01:55,656 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:01:55,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967284782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:01:55,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:01:55,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-19 14:01:55,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746406570] [2024-11-19 14:01:55,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:01:55,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 14:01:55,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:01:55,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 14:01:55,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-19 14:01:55,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-11-19 14:01:55,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 71 transitions, 388 flow. Second operand has 24 states, 24 states have (on average 13.083333333333334) internal successors, (314), 24 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:55,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:01:55,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-11-19 14:01:55,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:01:55,978 INFO L124 PetriNetUnfolderBase]: 580/1196 cut-off events. [2024-11-19 14:01:55,978 INFO L125 PetriNetUnfolderBase]: For 835/835 co-relation queries the response was YES. [2024-11-19 14:01:55,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2972 conditions, 1196 events. 580/1196 cut-off events. For 835/835 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6449 event pairs, 397 based on Foata normal form. 12/1202 useless extension candidates. Maximal degree in co-relation 2626. Up to 926 conditions per place. [2024-11-19 14:01:55,982 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 30 selfloop transitions, 80 changer transitions 0/119 dead transitions. [2024-11-19 14:01:55,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 119 transitions, 932 flow [2024-11-19 14:01:55,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 14:01:55,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-19 14:01:55,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 355 transitions. [2024-11-19 14:01:55,984 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3841991341991342 [2024-11-19 14:01:55,984 INFO L175 Difference]: Start difference. First operand has 64 places, 71 transitions, 388 flow. Second operand 22 states and 355 transitions. [2024-11-19 14:01:55,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 119 transitions, 932 flow [2024-11-19 14:01:55,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 119 transitions, 915 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:01:55,988 INFO L231 Difference]: Finished difference. Result has 89 places, 119 transitions, 917 flow [2024-11-19 14:01:55,988 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=917, PETRI_PLACES=89, PETRI_TRANSITIONS=119} [2024-11-19 14:01:55,988 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 50 predicate places. [2024-11-19 14:01:55,988 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 119 transitions, 917 flow [2024-11-19 14:01:55,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 13.083333333333334) internal successors, (314), 24 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:55,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:01:55,989 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:01:56,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 14:01:56,192 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 [2024-11-19 14:01:56,193 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-19 14:01:56,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:01:56,194 INFO L85 PathProgramCache]: Analyzing trace with hash -2072043351, now seen corresponding path program 1 times [2024-11-19 14:01:56,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:01:56,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978312688] [2024-11-19 14:01:56,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:01:56,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:01:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:01:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:01:56,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:01:56,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978312688] [2024-11-19 14:01:56,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978312688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:01:56,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:01:56,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:01:56,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434059130] [2024-11-19 14:01:56,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:01:56,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:01:56,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:01:56,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:01:56,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:01:56,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-11-19 14:01:56,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 119 transitions, 917 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:56,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:01:56,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-11-19 14:01:56,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:01:56,417 INFO L124 PetriNetUnfolderBase]: 503/1031 cut-off events. [2024-11-19 14:01:56,417 INFO L125 PetriNetUnfolderBase]: For 851/861 co-relation queries the response was YES. [2024-11-19 14:01:56,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2719 conditions, 1031 events. 503/1031 cut-off events. For 851/861 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5197 event pairs, 191 based on Foata normal form. 7/1036 useless extension candidates. Maximal degree in co-relation 2585. Up to 469 conditions per place. [2024-11-19 14:01:56,421 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 107 selfloop transitions, 15 changer transitions 10/142 dead transitions. [2024-11-19 14:01:56,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 142 transitions, 1248 flow [2024-11-19 14:01:56,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:01:56,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:01:56,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-11-19 14:01:56,422 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6238095238095238 [2024-11-19 14:01:56,422 INFO L175 Difference]: Start difference. First operand has 89 places, 119 transitions, 917 flow. Second operand 5 states and 131 transitions. [2024-11-19 14:01:56,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 142 transitions, 1248 flow [2024-11-19 14:01:56,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 142 transitions, 1038 flow, removed 67 selfloop flow, removed 9 redundant places. [2024-11-19 14:01:56,427 INFO L231 Difference]: Finished difference. Result has 85 places, 118 transitions, 730 flow [2024-11-19 14:01:56,427 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=730, PETRI_PLACES=85, PETRI_TRANSITIONS=118} [2024-11-19 14:01:56,429 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 46 predicate places. [2024-11-19 14:01:56,429 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 118 transitions, 730 flow [2024-11-19 14:01:56,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:56,430 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:01:56,430 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:01:56,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 14:01:56,430 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-19 14:01:56,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:01:56,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1665728021, now seen corresponding path program 1 times [2024-11-19 14:01:56,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:01:56,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425045333] [2024-11-19 14:01:56,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:01:56,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:01:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:01:56,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:01:56,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:01:56,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425045333] [2024-11-19 14:01:56,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425045333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:01:56,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681467173] [2024-11-19 14:01:56,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:01:56,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:01:56,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:01:56,530 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:01:56,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:01:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:01:56,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 14:01:56,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:01:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:01:56,724 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:01:56,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:01:56,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681467173] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:01:56,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:01:56,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-11-19 14:01:56,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614892578] [2024-11-19 14:01:56,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:01:56,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 14:01:56,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:01:56,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 14:01:56,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-11-19 14:01:56,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-11-19 14:01:56,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 118 transitions, 730 flow. Second operand has 21 states, 21 states have (on average 11.80952380952381) internal successors, (248), 21 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:56,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:01:56,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-11-19 14:01:56,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:01:57,727 INFO L124 PetriNetUnfolderBase]: 1484/2792 cut-off events. [2024-11-19 14:01:57,727 INFO L125 PetriNetUnfolderBase]: For 2125/2191 co-relation queries the response was YES. [2024-11-19 14:01:57,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7121 conditions, 2792 events. 1484/2792 cut-off events. For 2125/2191 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17364 event pairs, 506 based on Foata normal form. 66/2835 useless extension candidates. Maximal degree in co-relation 6966. Up to 415 conditions per place. [2024-11-19 14:01:57,738 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 196 selfloop transitions, 70 changer transitions 55/329 dead transitions. [2024-11-19 14:01:57,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 329 transitions, 2220 flow [2024-11-19 14:01:57,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-19 14:01:57,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-19 14:01:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 486 transitions. [2024-11-19 14:01:57,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.413265306122449 [2024-11-19 14:01:57,742 INFO L175 Difference]: Start difference. First operand has 85 places, 118 transitions, 730 flow. Second operand 28 states and 486 transitions. [2024-11-19 14:01:57,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 329 transitions, 2220 flow [2024-11-19 14:01:57,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 329 transitions, 2136 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-19 14:01:57,754 INFO L231 Difference]: Finished difference. Result has 111 places, 148 transitions, 1164 flow [2024-11-19 14:01:57,754 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1164, PETRI_PLACES=111, PETRI_TRANSITIONS=148} [2024-11-19 14:01:57,755 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 72 predicate places. [2024-11-19 14:01:57,755 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 148 transitions, 1164 flow [2024-11-19 14:01:57,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.80952380952381) internal successors, (248), 21 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:57,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:01:57,756 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:01:57,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 14:01:57,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:01:57,956 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-19 14:01:57,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:01:57,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1616203321, now seen corresponding path program 1 times [2024-11-19 14:01:57,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:01:57,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250083894] [2024-11-19 14:01:57,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:01:57,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:01:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:01:58,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:01:58,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:01:58,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250083894] [2024-11-19 14:01:58,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250083894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:01:58,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880357480] [2024-11-19 14:01:58,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:01:58,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:01:58,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:01:58,063 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:01:58,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 14:01:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:01:58,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 14:01:58,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:01:58,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:01:58,231 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:01:58,324 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:01:58,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880357480] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:01:58,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:01:58,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2024-11-19 14:01:58,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791009841] [2024-11-19 14:01:58,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:01:58,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 14:01:58,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:01:58,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 14:01:58,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-19 14:01:58,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-11-19 14:01:58,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 148 transitions, 1164 flow. Second operand has 19 states, 19 states have (on average 12.263157894736842) internal successors, (233), 19 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:58,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:01:58,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-11-19 14:01:58,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:01:58,977 INFO L124 PetriNetUnfolderBase]: 1312/2468 cut-off events. [2024-11-19 14:01:58,977 INFO L125 PetriNetUnfolderBase]: For 3049/3061 co-relation queries the response was YES. [2024-11-19 14:01:58,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6643 conditions, 2468 events. 1312/2468 cut-off events. For 3049/3061 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 14916 event pairs, 418 based on Foata normal form. 76/2500 useless extension candidates. Maximal degree in co-relation 6463. Up to 604 conditions per place. [2024-11-19 14:01:58,988 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 73 selfloop transitions, 101 changer transitions 43/224 dead transitions. [2024-11-19 14:01:58,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 224 transitions, 1937 flow [2024-11-19 14:01:58,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 14:01:58,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 14:01:58,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 228 transitions. [2024-11-19 14:01:58,990 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4175824175824176 [2024-11-19 14:01:58,990 INFO L175 Difference]: Start difference. First operand has 111 places, 148 transitions, 1164 flow. Second operand 13 states and 228 transitions. [2024-11-19 14:01:58,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 224 transitions, 1937 flow [2024-11-19 14:01:58,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 224 transitions, 1864 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-11-19 14:01:59,000 INFO L231 Difference]: Finished difference. Result has 117 places, 141 transitions, 1251 flow [2024-11-19 14:01:59,001 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1251, PETRI_PLACES=117, PETRI_TRANSITIONS=141} [2024-11-19 14:01:59,002 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 78 predicate places. [2024-11-19 14:01:59,002 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 141 transitions, 1251 flow [2024-11-19 14:01:59,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.263157894736842) internal successors, (233), 19 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:59,003 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:01:59,003 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:01:59,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 14:01:59,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 14:01:59,205 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-19 14:01:59,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:01:59,205 INFO L85 PathProgramCache]: Analyzing trace with hash -531801311, now seen corresponding path program 1 times [2024-11-19 14:01:59,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:01:59,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014572127] [2024-11-19 14:01:59,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:01:59,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:01:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:01:59,333 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 14:01:59,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:01:59,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014572127] [2024-11-19 14:01:59,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014572127] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:01:59,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509710236] [2024-11-19 14:01:59,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:01:59,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:01:59,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:01:59,339 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:01:59,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 14:01:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:01:59,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 14:01:59,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:01:59,601 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 14:01:59,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:01:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 14:01:59,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509710236] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:01:59,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:01:59,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2024-11-19 14:01:59,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569872852] [2024-11-19 14:01:59,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:01:59,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 14:01:59,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:01:59,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 14:01:59,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-19 14:01:59,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-11-19 14:01:59,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 141 transitions, 1251 flow. Second operand has 18 states, 18 states have (on average 12.555555555555555) internal successors, (226), 18 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:01:59,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:01:59,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-11-19 14:01:59,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:02:00,410 INFO L124 PetriNetUnfolderBase]: 950/1772 cut-off events. [2024-11-19 14:02:00,410 INFO L125 PetriNetUnfolderBase]: For 2904/2926 co-relation queries the response was YES. [2024-11-19 14:02:00,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5187 conditions, 1772 events. 950/1772 cut-off events. For 2904/2926 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9176 event pairs, 232 based on Foata normal form. 40/1808 useless extension candidates. Maximal degree in co-relation 4993. Up to 393 conditions per place. [2024-11-19 14:02:00,419 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 131 selfloop transitions, 53 changer transitions 62/253 dead transitions. [2024-11-19 14:02:00,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 253 transitions, 2221 flow [2024-11-19 14:02:00,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 14:02:00,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-19 14:02:00,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 304 transitions. [2024-11-19 14:02:00,422 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4257703081232493 [2024-11-19 14:02:00,422 INFO L175 Difference]: Start difference. First operand has 117 places, 141 transitions, 1251 flow. Second operand 17 states and 304 transitions. [2024-11-19 14:02:00,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 253 transitions, 2221 flow [2024-11-19 14:02:00,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 253 transitions, 2140 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-11-19 14:02:00,436 INFO L231 Difference]: Finished difference. Result has 117 places, 141 transitions, 1323 flow [2024-11-19 14:02:00,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1210, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1323, PETRI_PLACES=117, PETRI_TRANSITIONS=141} [2024-11-19 14:02:00,436 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 78 predicate places. [2024-11-19 14:02:00,437 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 141 transitions, 1323 flow [2024-11-19 14:02:00,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.555555555555555) internal successors, (226), 18 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:02:00,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:02:00,437 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:02:00,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 14:02:00,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 14:02:00,638 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-19 14:02:00,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:02:00,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1578804539, now seen corresponding path program 2 times [2024-11-19 14:02:00,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:02:00,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325474563] [2024-11-19 14:02:00,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:02:00,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:02:00,652 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:02:00,652 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:02:00,677 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 14:02:00,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:02:00,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325474563] [2024-11-19 14:02:00,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325474563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:02:00,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171751982] [2024-11-19 14:02:00,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:02:00,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:02:00,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:02:00,680 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:02:00,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 14:02:00,740 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:02:00,741 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:02:00,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:02:00,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:02:00,768 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 14:02:00,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:02:00,798 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 14:02:00,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171751982] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:02:00,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:02:00,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2024-11-19 14:02:00,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577520425] [2024-11-19 14:02:00,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:02:00,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:02:00,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:02:00,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:02:00,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 14:02:00,806 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-11-19 14:02:00,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 141 transitions, 1323 flow. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:02:00,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:02:00,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-11-19 14:02:00,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:02:00,982 INFO L124 PetriNetUnfolderBase]: 842/1619 cut-off events. [2024-11-19 14:02:00,982 INFO L125 PetriNetUnfolderBase]: For 2323/2344 co-relation queries the response was YES. [2024-11-19 14:02:00,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4685 conditions, 1619 events. 842/1619 cut-off events. For 2323/2344 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8338 event pairs, 376 based on Foata normal form. 0/1614 useless extension candidates. Maximal degree in co-relation 4488. Up to 943 conditions per place. [2024-11-19 14:02:00,988 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 147 selfloop transitions, 6 changer transitions 9/170 dead transitions. [2024-11-19 14:02:00,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 170 transitions, 1788 flow [2024-11-19 14:02:00,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:02:00,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:02:00,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-11-19 14:02:00,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2024-11-19 14:02:00,989 INFO L175 Difference]: Start difference. First operand has 117 places, 141 transitions, 1323 flow. Second operand 5 states and 117 transitions. [2024-11-19 14:02:00,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 170 transitions, 1788 flow [2024-11-19 14:02:00,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 170 transitions, 1708 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-11-19 14:02:00,998 INFO L231 Difference]: Finished difference. Result has 106 places, 138 transitions, 1270 flow [2024-11-19 14:02:00,998 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1255, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1270, PETRI_PLACES=106, PETRI_TRANSITIONS=138} [2024-11-19 14:02:00,998 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 67 predicate places. [2024-11-19 14:02:00,999 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 138 transitions, 1270 flow [2024-11-19 14:02:00,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:02:00,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:02:00,999 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:02:01,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 14:02:01,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:02:01,199 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-19 14:02:01,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:02:01,200 INFO L85 PathProgramCache]: Analyzing trace with hash -122621203, now seen corresponding path program 2 times [2024-11-19 14:02:01,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:02:01,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494931301] [2024-11-19 14:02:01,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:02:01,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:02:01,212 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:02:01,212 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:02:01,237 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 14:02:01,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:02:01,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494931301] [2024-11-19 14:02:01,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494931301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:02:01,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121692776] [2024-11-19 14:02:01,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:02:01,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:02:01,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:02:01,240 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:02:01,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 14:02:01,316 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:02:01,316 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:02:01,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:02:01,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:02:01,353 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 14:02:01,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:02:01,385 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 14:02:01,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121692776] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:02:01,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:02:01,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2024-11-19 14:02:01,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055203955] [2024-11-19 14:02:01,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:02:01,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:02:01,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:02:01,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:02:01,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 14:02:01,392 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-11-19 14:02:01,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 138 transitions, 1270 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:02:01,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:02:01,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-11-19 14:02:01,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:02:01,534 INFO L124 PetriNetUnfolderBase]: 464/1014 cut-off events. [2024-11-19 14:02:01,534 INFO L125 PetriNetUnfolderBase]: For 2073/2073 co-relation queries the response was YES. [2024-11-19 14:02:01,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3239 conditions, 1014 events. 464/1014 cut-off events. For 2073/2073 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4958 event pairs, 170 based on Foata normal form. 27/1036 useless extension candidates. Maximal degree in co-relation 3047. Up to 494 conditions per place. [2024-11-19 14:02:01,540 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 99 selfloop transitions, 1 changer transitions 57/160 dead transitions. [2024-11-19 14:02:01,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 160 transitions, 1686 flow [2024-11-19 14:02:01,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:02:01,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:02:01,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-11-19 14:02:01,541 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5190476190476191 [2024-11-19 14:02:01,541 INFO L175 Difference]: Start difference. First operand has 106 places, 138 transitions, 1270 flow. Second operand 5 states and 109 transitions. [2024-11-19 14:02:01,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 160 transitions, 1686 flow [2024-11-19 14:02:01,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 160 transitions, 1653 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-19 14:02:01,550 INFO L231 Difference]: Finished difference. Result has 103 places, 103 transitions, 1110 flow [2024-11-19 14:02:01,550 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1249, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1110, PETRI_PLACES=103, PETRI_TRANSITIONS=103} [2024-11-19 14:02:01,550 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 64 predicate places. [2024-11-19 14:02:01,551 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 103 transitions, 1110 flow [2024-11-19 14:02:01,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:02:01,551 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:02:01,551 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 1, 1, 1] [2024-11-19 14:02:01,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 14:02:01,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 14:02:01,752 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-19 14:02:01,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:02:01,752 INFO L85 PathProgramCache]: Analyzing trace with hash 93172396, now seen corresponding path program 2 times [2024-11-19 14:02:01,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:02:01,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124420] [2024-11-19 14:02:01,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:02:01,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:02:01,769 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:02:01,769 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:02:01,799 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 14:02:01,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:02:01,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124420] [2024-11-19 14:02:01,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:02:01,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855921922] [2024-11-19 14:02:01,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:02:01,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:02:01,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:02:01,802 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:02:01,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 14:02:01,874 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:02:01,874 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:02:01,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:02:01,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:02:01,917 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 14:02:01,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:02:01,961 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 14:02:01,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855921922] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:02:01,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:02:01,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-19 14:02:01,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138543865] [2024-11-19 14:02:01,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:02:01,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:02:01,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:02:01,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:02:01,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:02:01,971 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-11-19 14:02:01,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 103 transitions, 1110 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:02:01,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:02:01,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-11-19 14:02:01,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:02:02,002 INFO L124 PetriNetUnfolderBase]: 12/144 cut-off events. [2024-11-19 14:02:02,002 INFO L125 PetriNetUnfolderBase]: For 682/682 co-relation queries the response was YES. [2024-11-19 14:02:02,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709 conditions, 144 events. 12/144 cut-off events. For 682/682 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 357 event pairs, 0 based on Foata normal form. 3/147 useless extension candidates. Maximal degree in co-relation 684. Up to 56 conditions per place. [2024-11-19 14:02:02,003 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 0 selfloop transitions, 0 changer transitions 102/102 dead transitions. [2024-11-19 14:02:02,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 102 transitions, 1288 flow [2024-11-19 14:02:02,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:02:02,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:02:02,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 55 transitions. [2024-11-19 14:02:02,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3273809523809524 [2024-11-19 14:02:02,004 INFO L175 Difference]: Start difference. First operand has 103 places, 103 transitions, 1110 flow. Second operand 4 states and 55 transitions. [2024-11-19 14:02:02,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 102 transitions, 1288 flow [2024-11-19 14:02:02,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 102 transitions, 1118 flow, removed 13 selfloop flow, removed 14 redundant places. [2024-11-19 14:02:02,008 INFO L231 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2024-11-19 14:02:02,008 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=63, PETRI_TRANSITIONS=0} [2024-11-19 14:02:02,008 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 24 predicate places. [2024-11-19 14:02:02,008 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2024-11-19 14:02:02,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:02:02,011 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2024-11-19 14:02:02,011 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2024-11-19 14:02:02,011 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2024-11-19 14:02:02,011 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2024-11-19 14:02:02,011 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2024-11-19 14:02:02,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2024-11-19 14:02:02,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2024-11-19 14:02:02,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2024-11-19 14:02:02,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2024-11-19 14:02:02,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2024-11-19 14:02:02,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2024-11-19 14:02:02,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2024-11-19 14:02:02,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2024-11-19 14:02:02,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2024-11-19 14:02:02,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 14:02:02,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 14:02:02,217 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:02:02,222 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-19 14:02:02,222 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 14:02:02,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:02:02 BasicIcfg [2024-11-19 14:02:02,225 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 14:02:02,226 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 14:02:02,226 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 14:02:02,226 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 14:02:02,226 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:01:51" (3/4) ... [2024-11-19 14:02:02,227 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 14:02:02,229 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-19 14:02:02,230 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-19 14:02:02,237 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 112 nodes and edges [2024-11-19 14:02:02,238 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2024-11-19 14:02:02,238 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-19 14:02:02,238 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-19 14:02:02,383 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 14:02:02,383 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 14:02:02,383 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 14:02:02,384 INFO L158 Benchmark]: Toolchain (without parser) took 11558.89ms. Allocated memory was 146.8MB in the beginning and 377.5MB in the end (delta: 230.7MB). Free memory was 74.6MB in the beginning and 225.1MB in the end (delta: -150.5MB). Peak memory consumption was 82.1MB. Max. memory is 16.1GB. [2024-11-19 14:02:02,384 INFO L158 Benchmark]: CDTParser took 0.87ms. Allocated memory is still 146.8MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 14:02:02,384 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.60ms. Allocated memory was 146.8MB in the beginning and 226.5MB in the end (delta: 79.7MB). Free memory was 74.5MB in the beginning and 196.3MB in the end (delta: -121.9MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2024-11-19 14:02:02,384 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.20ms. Allocated memory is still 226.5MB. Free memory was 196.3MB in the beginning and 194.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 14:02:02,384 INFO L158 Benchmark]: Boogie Preprocessor took 47.08ms. Allocated memory is still 226.5MB. Free memory was 194.2MB in the beginning and 192.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 14:02:02,384 INFO L158 Benchmark]: RCFGBuilder took 681.65ms. Allocated memory is still 226.5MB. Free memory was 192.1MB in the beginning and 149.1MB in the end (delta: 43.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2024-11-19 14:02:02,385 INFO L158 Benchmark]: TraceAbstraction took 10297.30ms. Allocated memory was 226.5MB in the beginning and 377.5MB in the end (delta: 151.0MB). Free memory was 148.1MB in the beginning and 230.4MB in the end (delta: -82.3MB). Peak memory consumption was 68.7MB. Max. memory is 16.1GB. [2024-11-19 14:02:02,385 INFO L158 Benchmark]: Witness Printer took 157.46ms. Allocated memory is still 377.5MB. Free memory was 230.4MB in the beginning and 225.1MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-19 14:02:02,386 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87ms. Allocated memory is still 146.8MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 327.60ms. Allocated memory was 146.8MB in the beginning and 226.5MB in the end (delta: 79.7MB). Free memory was 74.5MB in the beginning and 196.3MB in the end (delta: -121.9MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.20ms. Allocated memory is still 226.5MB. Free memory was 196.3MB in the beginning and 194.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.08ms. Allocated memory is still 226.5MB. Free memory was 194.2MB in the beginning and 192.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 681.65ms. Allocated memory is still 226.5MB. Free memory was 192.1MB in the beginning and 149.1MB in the end (delta: 43.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 10297.30ms. Allocated memory was 226.5MB in the beginning and 377.5MB in the end (delta: 151.0MB). Free memory was 148.1MB in the beginning and 230.4MB in the end (delta: -82.3MB). Peak memory consumption was 68.7MB. Max. memory is 16.1GB. * Witness Printer took 157.46ms. Allocated memory is still 377.5MB. Free memory was 230.4MB in the beginning and 225.1MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 57 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.2s, OverallIterations: 18, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1408 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1319 mSDsluCounter, 1359 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1339 mSDsCounter, 147 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3564 IncrementalHoareTripleChecker+Invalid, 3711 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 147 mSolverCounterUnsat, 20 mSDtfsCounter, 3564 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 511 GetRequests, 315 SyntacticMatches, 8 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1323occurred in iteration=15, InterpolantAutomatonStates: 148, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 482 NumberOfCodeBlocks, 326 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 640 ConstructedInterpolants, 0 QuantifiedInterpolants, 2310 SizeOfPredicates, 39 NumberOfNonLiveVariables, 1136 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 36 InterpolantComputations, 9 PerfectInterpolantSequences, 647/871 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-19 14:02:02,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE