./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.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 fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:02:27,759 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:02:27,818 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-15 00:02:27,823 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:02:27,824 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:02:27,838 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:02:27,839 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:02:27,839 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:02:27,840 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:02:27,840 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:02:27,840 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 00:02:27,840 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 00:02:27,843 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:02:27,843 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:02:27,843 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:02:27,843 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:02:27,844 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 00:02:27,844 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 00:02:27,844 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:02:27,844 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 00:02:27,844 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:02:27,847 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 00:02:27,848 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 00:02:27,848 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 00:02:27,848 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:02:27,848 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-15 00:02:27,848 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:02:27,849 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 00:02:27,851 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:02:27,851 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:02:27,852 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:02:27,852 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:02:27,852 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 00:02:27,852 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 00:02:27,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:02:27,852 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:02:27,853 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 00:02:27,853 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 00:02:27,853 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:02:27,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 00:02:27,853 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 00:02:27,854 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 00:02:27,854 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 00:02:27,854 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 00:02:27,854 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 [2024-10-15 00:02:28,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:02:28,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:02:28,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:02:28,111 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:02:28,111 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:02:28,112 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2024-10-15 00:02:29,676 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:02:29,843 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:02:29,844 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2024-10-15 00:02:29,852 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37df791b9/4ad7f76d7d594a908da6384aa46d5e39/FLAG960941e88 [2024-10-15 00:02:29,866 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37df791b9/4ad7f76d7d594a908da6384aa46d5e39 [2024-10-15 00:02:29,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:02:29,870 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:02:29,871 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:02:29,871 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:02:29,878 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:02:29,879 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:02:29" (1/1) ... [2024-10-15 00:02:29,880 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20084f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:29, skipping insertion in model container [2024-10-15 00:02:29,880 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:02:29" (1/1) ... [2024-10-15 00:02:29,899 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:02:30,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:02:30,130 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:02:30,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:02:30,161 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:02:30,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:30 WrapperNode [2024-10-15 00:02:30,162 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:02:30,163 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:02:30,163 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:02:30,163 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:02:30,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:30" (1/1) ... [2024-10-15 00:02:30,175 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:30" (1/1) ... [2024-10-15 00:02:30,223 INFO L138 Inliner]: procedures = 23, calls = 36, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 201 [2024-10-15 00:02:30,224 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:02:30,225 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:02:30,225 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:02:30,225 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:02:30,234 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:30" (1/1) ... [2024-10-15 00:02:30,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:30" (1/1) ... [2024-10-15 00:02:30,237 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:30" (1/1) ... [2024-10-15 00:02:30,270 INFO L175 MemorySlicer]: Split 14 memory accesses to 2 slices as follows [2, 12]. 86 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]. [2024-10-15 00:02:30,271 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:30" (1/1) ... [2024-10-15 00:02:30,271 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:30" (1/1) ... [2024-10-15 00:02:30,283 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:30" (1/1) ... [2024-10-15 00:02:30,299 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:30" (1/1) ... [2024-10-15 00:02:30,301 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:30" (1/1) ... [2024-10-15 00:02:30,310 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:30" (1/1) ... [2024-10-15 00:02:30,315 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:02:30,316 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:02:30,316 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:02:30,316 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:02:30,317 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:30" (1/1) ... [2024-10-15 00:02:30,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:02:30,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:30,400 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-15 00:02:30,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-15 00:02:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 00:02:30,496 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-15 00:02:30,496 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-15 00:02:30,496 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-15 00:02:30,496 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-15 00:02:30,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 00:02:30,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-15 00:02:30,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-15 00:02:30,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-15 00:02:30,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-15 00:02:30,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-15 00:02:30,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-15 00:02:30,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:02:30,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:02:30,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-15 00:02:30,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-15 00:02:30,501 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-15 00:02:30,797 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:02:30,799 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:02:31,087 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-15 00:02:31,088 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:02:31,317 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:02:31,317 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-15 00:02:31,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:02:31 BoogieIcfgContainer [2024-10-15 00:02:31,319 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:02:31,321 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 00:02:31,321 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 00:02:31,324 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 00:02:31,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:02:29" (1/3) ... [2024-10-15 00:02:31,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122f527d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:02:31, skipping insertion in model container [2024-10-15 00:02:31,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:30" (2/3) ... [2024-10-15 00:02:31,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122f527d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:02:31, skipping insertion in model container [2024-10-15 00:02:31,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:02:31" (3/3) ... [2024-10-15 00:02:31,328 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2024-10-15 00:02:31,343 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 00:02:31,343 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-15 00:02:31,344 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-15 00:02:31,391 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-15 00:02:31,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 40 transitions, 94 flow [2024-10-15 00:02:31,459 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-10-15 00:02:31,462 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-15 00:02:31,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 4/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-10-15 00:02:31,465 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 40 transitions, 94 flow [2024-10-15 00:02:31,468 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 36 transitions, 81 flow [2024-10-15 00:02:31,475 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 00:02:31,485 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;@51ace94f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 00:02:31,487 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-15 00:02:31,489 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-15 00:02:31,494 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-15 00:02:31,494 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-15 00:02:31,494 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:31,495 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-15 00:02:31,495 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-15 00:02:31,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:31,500 INFO L85 PathProgramCache]: Analyzing trace with hash 627926, now seen corresponding path program 1 times [2024-10-15 00:02:31,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:31,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012725228] [2024-10-15 00:02:31,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:31,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:31,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:31,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012725228] [2024-10-15 00:02:31,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012725228] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:31,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:31,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:02:31,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869010000] [2024-10-15 00:02:31,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:31,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:02:31,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:31,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:02:31,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:02:31,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-15 00:02:31,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:31,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:31,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-15 00:02:31,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:31,903 INFO L124 PetriNetUnfolderBase]: 63/161 cut-off events. [2024-10-15 00:02:31,903 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-15 00:02:31,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 161 events. 63/161 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 597 event pairs, 42 based on Foata normal form. 2/146 useless extension candidates. Maximal degree in co-relation 245. Up to 107 conditions per place. [2024-10-15 00:02:31,907 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 16 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2024-10-15 00:02:31,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 121 flow [2024-10-15 00:02:31,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:02:31,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:02:31,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2024-10-15 00:02:31,917 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-15 00:02:31,919 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 81 flow. Second operand 4 states and 80 transitions. [2024-10-15 00:02:31,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 121 flow [2024-10-15 00:02:31,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 34 transitions, 116 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-15 00:02:31,924 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 84 flow [2024-10-15 00:02:31,925 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2024-10-15 00:02:31,928 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2024-10-15 00:02:31,929 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 84 flow [2024-10-15 00:02:31,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:31,929 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:31,929 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-15 00:02:31,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 00:02:31,930 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-15 00:02:31,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:31,930 INFO L85 PathProgramCache]: Analyzing trace with hash 19466337, now seen corresponding path program 1 times [2024-10-15 00:02:31,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:31,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303943181] [2024-10-15 00:02:31,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:31,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:31,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:31,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:31,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303943181] [2024-10-15 00:02:31,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303943181] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:31,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:31,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:02:31,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165193505] [2024-10-15 00:02:31,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:31,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:02:31,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:31,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:02:31,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:02:31,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-15 00:02:31,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:31,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:31,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-15 00:02:31,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:32,093 INFO L124 PetriNetUnfolderBase]: 65/169 cut-off events. [2024-10-15 00:02:32,093 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-15 00:02:32,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 169 events. 65/169 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 643 event pairs, 42 based on Foata normal form. 2/156 useless extension candidates. Maximal degree in co-relation 264. Up to 116 conditions per place. [2024-10-15 00:02:32,095 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 21 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2024-10-15 00:02:32,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 40 transitions, 162 flow [2024-10-15 00:02:32,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:02:32,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:02:32,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-10-15 00:02:32,101 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-10-15 00:02:32,101 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 84 flow. Second operand 4 states and 86 transitions. [2024-10-15 00:02:32,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 40 transitions, 162 flow [2024-10-15 00:02:32,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 140 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-15 00:02:32,105 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 128 flow [2024-10-15 00:02:32,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2024-10-15 00:02:32,106 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2024-10-15 00:02:32,106 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 128 flow [2024-10-15 00:02:32,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:32,107 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:32,107 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-15 00:02:32,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-15 00:02:32,107 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-15 00:02:32,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:32,107 INFO L85 PathProgramCache]: Analyzing trace with hash 101669241, now seen corresponding path program 1 times [2024-10-15 00:02:32,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:32,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949542698] [2024-10-15 00:02:32,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:32,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:32,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:32,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:32,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949542698] [2024-10-15 00:02:32,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949542698] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:32,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627221833] [2024-10-15 00:02:32,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:32,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:32,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:32,245 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:32,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 00:02:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:32,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:02:32,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:32,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:32,356 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:32,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:32,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627221833] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:32,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:32,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-15 00:02:32,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578784711] [2024-10-15 00:02:32,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:32,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-15 00:02:32,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:32,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-15 00:02:32,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-15 00:02:32,434 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-15 00:02:32,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 128 flow. Second operand has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:32,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:32,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-15 00:02:32,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:32,595 INFO L124 PetriNetUnfolderBase]: 71/193 cut-off events. [2024-10-15 00:02:32,595 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-10-15 00:02:32,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 193 events. 71/193 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 780 event pairs, 42 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 275. Up to 119 conditions per place. [2024-10-15 00:02:32,597 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 21 selfloop transitions, 25 changer transitions 0/58 dead transitions. [2024-10-15 00:02:32,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 298 flow [2024-10-15 00:02:32,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:02:32,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:02:32,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-10-15 00:02:32,602 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-10-15 00:02:32,603 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 128 flow. Second operand 10 states and 192 transitions. [2024-10-15 00:02:32,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 298 flow [2024-10-15 00:02:32,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 58 transitions, 298 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-15 00:02:32,605 INFO L231 Difference]: Finished difference. Result has 52 places, 58 transitions, 290 flow [2024-10-15 00:02:32,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=290, PETRI_PLACES=52, PETRI_TRANSITIONS=58} [2024-10-15 00:02:32,606 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2024-10-15 00:02:32,607 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 58 transitions, 290 flow [2024-10-15 00:02:32,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:32,607 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:32,607 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:32,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-15 00:02:32,811 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 [2024-10-15 00:02:32,812 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-15 00:02:32,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:32,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1747027574, now seen corresponding path program 1 times [2024-10-15 00:02:32,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:32,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780091092] [2024-10-15 00:02:32,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:32,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:32,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:32,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:32,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780091092] [2024-10-15 00:02:32,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780091092] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:32,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:32,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:02:32,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876445378] [2024-10-15 00:02:32,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:32,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:02:32,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:32,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:02:32,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:02:32,962 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-15 00:02:32,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 58 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:32,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:32,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-15 00:02:32,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:33,093 INFO L124 PetriNetUnfolderBase]: 165/365 cut-off events. [2024-10-15 00:02:33,094 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-10-15 00:02:33,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 365 events. 165/365 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1578 event pairs, 67 based on Foata normal form. 10/356 useless extension candidates. Maximal degree in co-relation 704. Up to 219 conditions per place. [2024-10-15 00:02:33,100 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 61 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2024-10-15 00:02:33,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 460 flow [2024-10-15 00:02:33,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:02:33,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:02:33,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-10-15 00:02:33,102 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64375 [2024-10-15 00:02:33,102 INFO L175 Difference]: Start difference. First operand has 52 places, 58 transitions, 290 flow. Second operand 4 states and 103 transitions. [2024-10-15 00:02:33,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 460 flow [2024-10-15 00:02:33,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 76 transitions, 396 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-10-15 00:02:33,107 INFO L231 Difference]: Finished difference. Result has 53 places, 61 transitions, 255 flow [2024-10-15 00:02:33,107 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=53, PETRI_TRANSITIONS=61} [2024-10-15 00:02:33,108 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 14 predicate places. [2024-10-15 00:02:33,109 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 61 transitions, 255 flow [2024-10-15 00:02:33,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:33,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:33,109 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:33,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-15 00:02:33,110 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-15 00:02:33,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:33,111 INFO L85 PathProgramCache]: Analyzing trace with hash 674683126, now seen corresponding path program 1 times [2024-10-15 00:02:33,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:33,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073557453] [2024-10-15 00:02:33,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:33,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:33,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:33,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:33,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073557453] [2024-10-15 00:02:33,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073557453] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:33,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:33,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:02:33,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263200512] [2024-10-15 00:02:33,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:33,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:02:33,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:33,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:02:33,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:02:33,181 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-15 00:02:33,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 61 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:33,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:33,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-15 00:02:33,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:33,270 INFO L124 PetriNetUnfolderBase]: 248/490 cut-off events. [2024-10-15 00:02:33,271 INFO L125 PetriNetUnfolderBase]: For 190/239 co-relation queries the response was YES. [2024-10-15 00:02:33,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 490 events. 248/490 cut-off events. For 190/239 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2056 event pairs, 117 based on Foata normal form. 30/499 useless extension candidates. Maximal degree in co-relation 1083. Up to 310 conditions per place. [2024-10-15 00:02:33,274 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 65 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2024-10-15 00:02:33,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 81 transitions, 461 flow [2024-10-15 00:02:33,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:02:33,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:02:33,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-10-15 00:02:33,275 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63125 [2024-10-15 00:02:33,275 INFO L175 Difference]: Start difference. First operand has 53 places, 61 transitions, 255 flow. Second operand 4 states and 101 transitions. [2024-10-15 00:02:33,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 81 transitions, 461 flow [2024-10-15 00:02:33,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 81 transitions, 452 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:33,278 INFO L231 Difference]: Finished difference. Result has 57 places, 64 transitions, 281 flow [2024-10-15 00:02:33,278 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=281, PETRI_PLACES=57, PETRI_TRANSITIONS=64} [2024-10-15 00:02:33,279 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 18 predicate places. [2024-10-15 00:02:33,279 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 64 transitions, 281 flow [2024-10-15 00:02:33,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:33,279 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:33,279 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:33,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-15 00:02:33,279 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-15 00:02:33,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:33,280 INFO L85 PathProgramCache]: Analyzing trace with hash 764148641, now seen corresponding path program 1 times [2024-10-15 00:02:33,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:33,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396652997] [2024-10-15 00:02:33,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:33,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:33,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:02:33,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:33,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396652997] [2024-10-15 00:02:33,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396652997] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:33,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:33,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:02:33,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948742942] [2024-10-15 00:02:33,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:33,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:02:33,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:33,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:02:33,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:02:33,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-10-15 00:02:33,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 64 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:33,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:33,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-10-15 00:02:33,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:33,546 INFO L124 PetriNetUnfolderBase]: 190/468 cut-off events. [2024-10-15 00:02:33,546 INFO L125 PetriNetUnfolderBase]: For 218/249 co-relation queries the response was YES. [2024-10-15 00:02:33,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1180 conditions, 468 events. 190/468 cut-off events. For 218/249 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2111 event pairs, 122 based on Foata normal form. 25/484 useless extension candidates. Maximal degree in co-relation 1095. Up to 273 conditions per place. [2024-10-15 00:02:33,549 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 55 selfloop transitions, 3 changer transitions 14/88 dead transitions. [2024-10-15 00:02:33,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 88 transitions, 529 flow [2024-10-15 00:02:33,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:02:33,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:02:33,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-10-15 00:02:33,550 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68125 [2024-10-15 00:02:33,551 INFO L175 Difference]: Start difference. First operand has 57 places, 64 transitions, 281 flow. Second operand 4 states and 109 transitions. [2024-10-15 00:02:33,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 88 transitions, 529 flow [2024-10-15 00:02:33,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 88 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:33,554 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 289 flow [2024-10-15 00:02:33,554 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=289, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2024-10-15 00:02:33,555 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 21 predicate places. [2024-10-15 00:02:33,555 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 289 flow [2024-10-15 00:02:33,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:33,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:33,556 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-15 00:02:33,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-15 00:02:33,556 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-15 00:02:33,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:33,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2071405983, now seen corresponding path program 2 times [2024-10-15 00:02:33,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:33,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943491500] [2024-10-15 00:02:33,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:33,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:33,790 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:33,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:33,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943491500] [2024-10-15 00:02:33,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943491500] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:33,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51760013] [2024-10-15 00:02:33,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:02:33,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:33,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:33,797 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:33,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 00:02:33,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:02:33,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:33,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 00:02:33,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:33,925 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:02:33,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:02:33,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51760013] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:33,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:33,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-15 00:02:33,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117813939] [2024-10-15 00:02:33,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:33,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-15 00:02:33,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:33,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-15 00:02:33,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-15 00:02:34,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-15 00:02:34,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 289 flow. Second operand has 14 states, 14 states have (on average 15.142857142857142) internal successors, (212), 14 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:34,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:34,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-15 00:02:34,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:34,270 INFO L124 PetriNetUnfolderBase]: 193/428 cut-off events. [2024-10-15 00:02:34,270 INFO L125 PetriNetUnfolderBase]: For 295/326 co-relation queries the response was YES. [2024-10-15 00:02:34,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 428 events. 193/428 cut-off events. For 295/326 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1847 event pairs, 122 based on Foata normal form. 15/405 useless extension candidates. Maximal degree in co-relation 1038. Up to 314 conditions per place. [2024-10-15 00:02:34,273 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 21 selfloop transitions, 34 changer transitions 0/69 dead transitions. [2024-10-15 00:02:34,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 69 transitions, 418 flow [2024-10-15 00:02:34,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-15 00:02:34,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-15 00:02:34,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 390 transitions. [2024-10-15 00:02:34,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-10-15 00:02:34,275 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 289 flow. Second operand 24 states and 390 transitions. [2024-10-15 00:02:34,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 69 transitions, 418 flow [2024-10-15 00:02:34,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 69 transitions, 414 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:34,277 INFO L231 Difference]: Finished difference. Result has 83 places, 69 transitions, 385 flow [2024-10-15 00:02:34,278 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=385, PETRI_PLACES=83, PETRI_TRANSITIONS=69} [2024-10-15 00:02:34,278 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2024-10-15 00:02:34,278 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 385 flow [2024-10-15 00:02:34,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.142857142857142) internal successors, (212), 14 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:34,279 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:34,279 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:34,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-15 00:02:34,480 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,SelfDestructingSolverStorable6 [2024-10-15 00:02:34,481 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-15 00:02:34,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:34,481 INFO L85 PathProgramCache]: Analyzing trace with hash 485609145, now seen corresponding path program 1 times [2024-10-15 00:02:34,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:34,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295089563] [2024-10-15 00:02:34,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:34,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:34,586 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:34,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:34,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295089563] [2024-10-15 00:02:34,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295089563] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:34,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473585609] [2024-10-15 00:02:34,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:34,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:34,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:34,589 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:34,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 00:02:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:34,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:02:34,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:34,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:34,699 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:02:34,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473585609] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:34,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:02:34,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-15 00:02:34,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511929455] [2024-10-15 00:02:34,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:34,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:02:34,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:34,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:02:34,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 00:02:34,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-15 00:02:34,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:34,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:34,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-15 00:02:34,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:34,904 INFO L124 PetriNetUnfolderBase]: 259/558 cut-off events. [2024-10-15 00:02:34,905 INFO L125 PetriNetUnfolderBase]: For 336/371 co-relation queries the response was YES. [2024-10-15 00:02:34,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1533 conditions, 558 events. 259/558 cut-off events. For 336/371 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2512 event pairs, 41 based on Foata normal form. 26/554 useless extension candidates. Maximal degree in co-relation 1454. Up to 174 conditions per place. [2024-10-15 00:02:34,908 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 87 selfloop transitions, 7 changer transitions 0/105 dead transitions. [2024-10-15 00:02:34,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 105 transitions, 701 flow [2024-10-15 00:02:34,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:02:34,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:02:34,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-10-15 00:02:34,909 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-10-15 00:02:34,909 INFO L175 Difference]: Start difference. First operand has 83 places, 69 transitions, 385 flow. Second operand 6 states and 145 transitions. [2024-10-15 00:02:34,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 105 transitions, 701 flow [2024-10-15 00:02:34,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 105 transitions, 600 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-10-15 00:02:34,913 INFO L231 Difference]: Finished difference. Result has 75 places, 68 transitions, 294 flow [2024-10-15 00:02:34,914 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=75, PETRI_TRANSITIONS=68} [2024-10-15 00:02:34,915 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2024-10-15 00:02:34,915 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 68 transitions, 294 flow [2024-10-15 00:02:34,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:34,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:34,915 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:34,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-15 00:02:35,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:35,116 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-15 00:02:35,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:35,116 INFO L85 PathProgramCache]: Analyzing trace with hash -2125985042, now seen corresponding path program 1 times [2024-10-15 00:02:35,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:35,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903260053] [2024-10-15 00:02:35,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:35,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:35,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:35,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:35,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903260053] [2024-10-15 00:02:35,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903260053] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:35,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055847486] [2024-10-15 00:02:35,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:35,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:35,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:35,260 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:35,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 00:02:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:35,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:02:35,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:35,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:35,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:35,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:35,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055847486] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:35,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:35,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-15 00:02:35,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130830276] [2024-10-15 00:02:35,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:35,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:02:35,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:35,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:02:35,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:02:35,465 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-15 00:02:35,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 68 transitions, 294 flow. Second operand has 12 states, 12 states have (on average 17.0) internal successors, (204), 12 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:35,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:35,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-15 00:02:35,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:35,800 INFO L124 PetriNetUnfolderBase]: 499/1012 cut-off events. [2024-10-15 00:02:35,800 INFO L125 PetriNetUnfolderBase]: For 855/925 co-relation queries the response was YES. [2024-10-15 00:02:35,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2848 conditions, 1012 events. 499/1012 cut-off events. For 855/925 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 4596 event pairs, 113 based on Foata normal form. 66/1051 useless extension candidates. Maximal degree in co-relation 2777. Up to 374 conditions per place. [2024-10-15 00:02:35,806 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 129 selfloop transitions, 13 changer transitions 0/153 dead transitions. [2024-10-15 00:02:35,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 153 transitions, 904 flow [2024-10-15 00:02:35,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:02:35,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:02:35,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-10-15 00:02:35,808 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6175 [2024-10-15 00:02:35,808 INFO L175 Difference]: Start difference. First operand has 75 places, 68 transitions, 294 flow. Second operand 10 states and 247 transitions. [2024-10-15 00:02:35,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 153 transitions, 904 flow [2024-10-15 00:02:35,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 153 transitions, 874 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-10-15 00:02:35,812 INFO L231 Difference]: Finished difference. Result has 83 places, 77 transitions, 362 flow [2024-10-15 00:02:35,812 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=362, PETRI_PLACES=83, PETRI_TRANSITIONS=77} [2024-10-15 00:02:35,813 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2024-10-15 00:02:35,813 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 362 flow [2024-10-15 00:02:35,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.0) internal successors, (204), 12 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:35,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:35,814 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:35,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-15 00:02:36,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:36,018 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-15 00:02:36,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:36,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1767712106, now seen corresponding path program 1 times [2024-10-15 00:02:36,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:36,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398589734] [2024-10-15 00:02:36,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:36,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:36,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-15 00:02:36,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:36,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398589734] [2024-10-15 00:02:36,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398589734] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:36,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:36,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-15 00:02:36,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244897403] [2024-10-15 00:02:36,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:36,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 00:02:36,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:36,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:02:36,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-15 00:02:36,122 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-10-15 00:02:36,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 77 transitions, 362 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:36,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:36,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-10-15 00:02:36,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:36,286 INFO L124 PetriNetUnfolderBase]: 419/1060 cut-off events. [2024-10-15 00:02:36,287 INFO L125 PetriNetUnfolderBase]: For 1070/1078 co-relation queries the response was YES. [2024-10-15 00:02:36,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2901 conditions, 1060 events. 419/1060 cut-off events. For 1070/1078 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5348 event pairs, 136 based on Foata normal form. 11/1059 useless extension candidates. Maximal degree in co-relation 2828. Up to 479 conditions per place. [2024-10-15 00:02:36,293 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 59 selfloop transitions, 10 changer transitions 10/96 dead transitions. [2024-10-15 00:02:36,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 96 transitions, 589 flow [2024-10-15 00:02:36,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:02:36,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-15 00:02:36,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-10-15 00:02:36,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.67 [2024-10-15 00:02:36,294 INFO L175 Difference]: Start difference. First operand has 83 places, 77 transitions, 362 flow. Second operand 5 states and 134 transitions. [2024-10-15 00:02:36,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 96 transitions, 589 flow [2024-10-15 00:02:36,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 96 transitions, 574 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-15 00:02:36,300 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 393 flow [2024-10-15 00:02:36,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=393, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-10-15 00:02:36,300 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 48 predicate places. [2024-10-15 00:02:36,300 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 393 flow [2024-10-15 00:02:36,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:36,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:36,301 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-15 00:02:36,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-15 00:02:36,301 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-15 00:02:36,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:36,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1541184979, now seen corresponding path program 1 times [2024-10-15 00:02:36,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:36,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261005530] [2024-10-15 00:02:36,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:36,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:36,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:36,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261005530] [2024-10-15 00:02:36,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261005530] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:36,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681554669] [2024-10-15 00:02:36,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:36,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:36,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:36,518 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) [2024-10-15 00:02:36,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 00:02:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:36,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-15 00:02:36,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:36,647 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:36,648 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:36,898 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:36,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681554669] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:36,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:36,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-10-15 00:02:36,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629155222] [2024-10-15 00:02:36,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:36,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-15 00:02:36,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:36,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-15 00:02:36,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-15 00:02:36,944 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-15 00:02:36,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 393 flow. Second operand has 28 states, 28 states have (on average 15.071428571428571) internal successors, (422), 28 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:36,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:36,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-15 00:02:36,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:37,301 INFO L124 PetriNetUnfolderBase]: 396/849 cut-off events. [2024-10-15 00:02:37,302 INFO L125 PetriNetUnfolderBase]: For 1598/1618 co-relation queries the response was YES. [2024-10-15 00:02:37,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2727 conditions, 849 events. 396/849 cut-off events. For 1598/1618 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3969 event pairs, 239 based on Foata normal form. 14/782 useless extension candidates. Maximal degree in co-relation 2453. Up to 612 conditions per place. [2024-10-15 00:02:37,307 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 32 selfloop transitions, 72 changer transitions 0/120 dead transitions. [2024-10-15 00:02:37,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 120 transitions, 832 flow [2024-10-15 00:02:37,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-15 00:02:37,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-15 00:02:37,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 463 transitions. [2024-10-15 00:02:37,310 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44519230769230766 [2024-10-15 00:02:37,311 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 393 flow. Second operand 26 states and 463 transitions. [2024-10-15 00:02:37,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 120 transitions, 832 flow [2024-10-15 00:02:37,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 120 transitions, 811 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-15 00:02:37,316 INFO L231 Difference]: Finished difference. Result has 115 places, 120 transitions, 799 flow [2024-10-15 00:02:37,316 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=799, PETRI_PLACES=115, PETRI_TRANSITIONS=120} [2024-10-15 00:02:37,317 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 76 predicate places. [2024-10-15 00:02:37,317 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 120 transitions, 799 flow [2024-10-15 00:02:37,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 15.071428571428571) internal successors, (422), 28 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:37,318 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:37,318 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:37,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-15 00:02:37,522 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,SelfDestructingSolverStorable10 [2024-10-15 00:02:37,523 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-15 00:02:37,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:37,523 INFO L85 PathProgramCache]: Analyzing trace with hash 674859671, now seen corresponding path program 1 times [2024-10-15 00:02:37,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:37,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976446675] [2024-10-15 00:02:37,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:37,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:02:37,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:37,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976446675] [2024-10-15 00:02:37,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976446675] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:37,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095008757] [2024-10-15 00:02:37,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:37,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:37,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:37,647 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) [2024-10-15 00:02:37,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 00:02:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:37,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:02:37,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:37,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:02:37,786 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:02:37,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095008757] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:37,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:02:37,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-15 00:02:37,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890711807] [2024-10-15 00:02:37,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:37,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:02:37,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:37,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:02:37,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 00:02:37,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-15 00:02:37,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 120 transitions, 799 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:37,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:37,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-15 00:02:37,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:38,071 INFO L124 PetriNetUnfolderBase]: 531/1107 cut-off events. [2024-10-15 00:02:38,072 INFO L125 PetriNetUnfolderBase]: For 1596/1613 co-relation queries the response was YES. [2024-10-15 00:02:38,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3485 conditions, 1107 events. 531/1107 cut-off events. For 1596/1613 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 5402 event pairs, 93 based on Foata normal form. 25/1086 useless extension candidates. Maximal degree in co-relation 3351. Up to 365 conditions per place. [2024-10-15 00:02:38,079 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 157 selfloop transitions, 7 changer transitions 0/177 dead transitions. [2024-10-15 00:02:38,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 177 transitions, 1431 flow [2024-10-15 00:02:38,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:02:38,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:02:38,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-10-15 00:02:38,081 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5875 [2024-10-15 00:02:38,081 INFO L175 Difference]: Start difference. First operand has 115 places, 120 transitions, 799 flow. Second operand 6 states and 141 transitions. [2024-10-15 00:02:38,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 177 transitions, 1431 flow [2024-10-15 00:02:38,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 177 transitions, 1246 flow, removed 54 selfloop flow, removed 12 redundant places. [2024-10-15 00:02:38,089 INFO L231 Difference]: Finished difference. Result has 107 places, 119 transitions, 624 flow [2024-10-15 00:02:38,089 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=624, PETRI_PLACES=107, PETRI_TRANSITIONS=119} [2024-10-15 00:02:38,091 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 68 predicate places. [2024-10-15 00:02:38,091 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 119 transitions, 624 flow [2024-10-15 00:02:38,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:38,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:38,092 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:38,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-15 00:02:38,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:38,294 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-15 00:02:38,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:38,296 INFO L85 PathProgramCache]: Analyzing trace with hash -554186023, now seen corresponding path program 1 times [2024-10-15 00:02:38,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:38,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744632899] [2024-10-15 00:02:38,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:38,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:38,366 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:02:38,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:38,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744632899] [2024-10-15 00:02:38,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744632899] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:38,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441539684] [2024-10-15 00:02:38,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:38,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:38,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:38,368 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) [2024-10-15 00:02:38,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-15 00:02:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:38,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:02:38,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:38,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:02:38,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:02:38,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441539684] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:38,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:38,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-15 00:02:38,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986209739] [2024-10-15 00:02:38,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:38,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:02:38,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:38,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:02:38,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:02:38,520 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-15 00:02:38,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 119 transitions, 624 flow. Second operand has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:38,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:38,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-15 00:02:38,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:38,858 INFO L124 PetriNetUnfolderBase]: 1011/1970 cut-off events. [2024-10-15 00:02:38,859 INFO L125 PetriNetUnfolderBase]: For 3049/3102 co-relation queries the response was YES. [2024-10-15 00:02:38,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6244 conditions, 1970 events. 1011/1970 cut-off events. For 3049/3102 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10015 event pairs, 187 based on Foata normal form. 75/2028 useless extension candidates. Maximal degree in co-relation 6132. Up to 745 conditions per place. [2024-10-15 00:02:38,872 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 219 selfloop transitions, 13 changer transitions 0/245 dead transitions. [2024-10-15 00:02:38,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 245 transitions, 1764 flow [2024-10-15 00:02:38,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:02:38,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:02:38,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-10-15 00:02:38,873 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5975 [2024-10-15 00:02:38,873 INFO L175 Difference]: Start difference. First operand has 107 places, 119 transitions, 624 flow. Second operand 10 states and 239 transitions. [2024-10-15 00:02:38,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 245 transitions, 1764 flow [2024-10-15 00:02:38,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 245 transitions, 1734 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-10-15 00:02:38,881 INFO L231 Difference]: Finished difference. Result has 115 places, 128 transitions, 692 flow [2024-10-15 00:02:38,881 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=692, PETRI_PLACES=115, PETRI_TRANSITIONS=128} [2024-10-15 00:02:38,881 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 76 predicate places. [2024-10-15 00:02:38,881 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 128 transitions, 692 flow [2024-10-15 00:02:38,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:38,882 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:38,882 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:38,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-15 00:02:39,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:39,083 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-15 00:02:39,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:39,083 INFO L85 PathProgramCache]: Analyzing trace with hash 2093030102, now seen corresponding path program 1 times [2024-10-15 00:02:39,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:39,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370416616] [2024-10-15 00:02:39,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:39,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:02:39,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:39,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370416616] [2024-10-15 00:02:39,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370416616] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:39,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258619263] [2024-10-15 00:02:39,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:39,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:39,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:39,257 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) [2024-10-15 00:02:39,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-15 00:02:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:39,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-15 00:02:39,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:39,378 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:02:39,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:39,501 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:02:39,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258619263] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:39,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:39,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-10-15 00:02:39,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376944726] [2024-10-15 00:02:39,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:39,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-15 00:02:39,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:39,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-15 00:02:39,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-10-15 00:02:39,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-15 00:02:39,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 128 transitions, 692 flow. Second operand has 24 states, 24 states have (on average 16.833333333333332) internal successors, (404), 24 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:39,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:39,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-15 00:02:39,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:40,289 INFO L124 PetriNetUnfolderBase]: 2001/3791 cut-off events. [2024-10-15 00:02:40,289 INFO L125 PetriNetUnfolderBase]: For 8879/9001 co-relation queries the response was YES. [2024-10-15 00:02:40,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12261 conditions, 3791 events. 2001/3791 cut-off events. For 8879/9001 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 20185 event pairs, 161 based on Foata normal form. 156/3939 useless extension candidates. Maximal degree in co-relation 12147. Up to 890 conditions per place. [2024-10-15 00:02:40,358 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 413 selfloop transitions, 31 changer transitions 0/457 dead transitions. [2024-10-15 00:02:40,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 457 transitions, 3480 flow [2024-10-15 00:02:40,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-15 00:02:40,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-15 00:02:40,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 538 transitions. [2024-10-15 00:02:40,360 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6113636363636363 [2024-10-15 00:02:40,360 INFO L175 Difference]: Start difference. First operand has 115 places, 128 transitions, 692 flow. Second operand 22 states and 538 transitions. [2024-10-15 00:02:40,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 457 transitions, 3480 flow [2024-10-15 00:02:40,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 457 transitions, 3289 flow, removed 63 selfloop flow, removed 2 redundant places. [2024-10-15 00:02:40,371 INFO L231 Difference]: Finished difference. Result has 140 places, 146 transitions, 887 flow [2024-10-15 00:02:40,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=887, PETRI_PLACES=140, PETRI_TRANSITIONS=146} [2024-10-15 00:02:40,371 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 101 predicate places. [2024-10-15 00:02:40,372 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 146 transitions, 887 flow [2024-10-15 00:02:40,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 16.833333333333332) internal successors, (404), 24 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:40,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:40,373 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:40,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-15 00:02:40,573 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,SelfDestructingSolverStorable13 [2024-10-15 00:02:40,574 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-15 00:02:40,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:40,574 INFO L85 PathProgramCache]: Analyzing trace with hash 669608307, now seen corresponding path program 2 times [2024-10-15 00:02:40,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:40,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014991729] [2024-10-15 00:02:40,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:40,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:40,776 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:02:40,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:40,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014991729] [2024-10-15 00:02:40,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014991729] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:40,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665875262] [2024-10-15 00:02:40,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:02:40,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:40,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:40,782 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) [2024-10-15 00:02:40,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-15 00:02:40,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:02:40,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:40,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:02:40,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:40,913 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-15 00:02:40,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:40,961 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-15 00:02:40,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665875262] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:40,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:40,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-10-15 00:02:40,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020246796] [2024-10-15 00:02:40,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:40,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-15 00:02:40,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:40,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-15 00:02:40,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-15 00:02:41,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-15 00:02:41,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 146 transitions, 887 flow. Second operand has 15 states, 15 states have (on average 17.333333333333332) internal successors, (260), 15 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:41,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:41,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-15 00:02:41,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:41,865 INFO L124 PetriNetUnfolderBase]: 2952/4981 cut-off events. [2024-10-15 00:02:41,865 INFO L125 PetriNetUnfolderBase]: For 13966/14368 co-relation queries the response was YES. [2024-10-15 00:02:41,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17784 conditions, 4981 events. 2952/4981 cut-off events. For 13966/14368 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 25712 event pairs, 234 based on Foata normal form. 98/5024 useless extension candidates. Maximal degree in co-relation 17663. Up to 1112 conditions per place. [2024-10-15 00:02:41,900 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 278 selfloop transitions, 21 changer transitions 156/473 dead transitions. [2024-10-15 00:02:41,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 473 transitions, 4307 flow [2024-10-15 00:02:41,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-15 00:02:41,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-15 00:02:41,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 333 transitions. [2024-10-15 00:02:41,902 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-10-15 00:02:41,902 INFO L175 Difference]: Start difference. First operand has 140 places, 146 transitions, 887 flow. Second operand 15 states and 333 transitions. [2024-10-15 00:02:41,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 473 transitions, 4307 flow [2024-10-15 00:02:41,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 473 transitions, 3519 flow, removed 269 selfloop flow, removed 13 redundant places. [2024-10-15 00:02:41,921 INFO L231 Difference]: Finished difference. Result has 141 places, 138 transitions, 810 flow [2024-10-15 00:02:41,922 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=810, PETRI_PLACES=141, PETRI_TRANSITIONS=138} [2024-10-15 00:02:41,922 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 102 predicate places. [2024-10-15 00:02:41,922 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 138 transitions, 810 flow [2024-10-15 00:02:41,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.333333333333332) internal successors, (260), 15 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:41,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:41,923 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 1, 1, 1] [2024-10-15 00:02:41,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-15 00:02:42,123 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,SelfDestructingSolverStorable14 [2024-10-15 00:02:42,125 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-15 00:02:42,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:42,128 INFO L85 PathProgramCache]: Analyzing trace with hash 250954686, now seen corresponding path program 2 times [2024-10-15 00:02:42,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:42,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814479111] [2024-10-15 00:02:42,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:42,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:42,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:42,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814479111] [2024-10-15 00:02:42,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814479111] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:42,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055899052] [2024-10-15 00:02:42,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:02:42,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:42,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:42,658 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:42,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-15 00:02:42,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:02:42,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:42,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 00:02:42,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-10-15 00:02:42,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:42,882 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-10-15 00:02:42,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055899052] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:42,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:42,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 3, 3] total 30 [2024-10-15 00:02:42,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229190986] [2024-10-15 00:02:42,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:42,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-15 00:02:42,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:42,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-15 00:02:42,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2024-10-15 00:02:42,946 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-15 00:02:42,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 138 transitions, 810 flow. Second operand has 31 states, 31 states have (on average 15.096774193548388) internal successors, (468), 31 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:42,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:42,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-15 00:02:42,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:43,744 INFO L124 PetriNetUnfolderBase]: 1410/3196 cut-off events. [2024-10-15 00:02:43,744 INFO L125 PetriNetUnfolderBase]: For 5731/5783 co-relation queries the response was YES. [2024-10-15 00:02:43,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10880 conditions, 3196 events. 1410/3196 cut-off events. For 5731/5783 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 19279 event pairs, 995 based on Foata normal form. 4/3152 useless extension candidates. Maximal degree in co-relation 10752. Up to 2107 conditions per place. [2024-10-15 00:02:43,763 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 34 selfloop transitions, 83 changer transitions 1/143 dead transitions. [2024-10-15 00:02:43,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 143 transitions, 1052 flow [2024-10-15 00:02:43,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-15 00:02:43,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-10-15 00:02:43,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 531 transitions. [2024-10-15 00:02:43,765 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4282258064516129 [2024-10-15 00:02:43,765 INFO L175 Difference]: Start difference. First operand has 141 places, 138 transitions, 810 flow. Second operand 31 states and 531 transitions. [2024-10-15 00:02:43,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 143 transitions, 1052 flow [2024-10-15 00:02:43,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 143 transitions, 947 flow, removed 11 selfloop flow, removed 23 redundant places. [2024-10-15 00:02:43,773 INFO L231 Difference]: Finished difference. Result has 145 places, 142 transitions, 870 flow [2024-10-15 00:02:43,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=870, PETRI_PLACES=145, PETRI_TRANSITIONS=142} [2024-10-15 00:02:43,774 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 106 predicate places. [2024-10-15 00:02:43,774 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 142 transitions, 870 flow [2024-10-15 00:02:43,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 15.096774193548388) internal successors, (468), 31 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:43,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:43,774 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:43,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-15 00:02:43,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-15 00:02:43,978 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-15 00:02:43,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:43,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1441886710, now seen corresponding path program 2 times [2024-10-15 00:02:43,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:43,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144614678] [2024-10-15 00:02:43,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:43,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:02:44,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:44,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144614678] [2024-10-15 00:02:44,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144614678] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:44,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5129712] [2024-10-15 00:02:44,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:02:44,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:44,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:44,522 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:44,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-15 00:02:44,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:02:44,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:44,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:02:44,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:44,720 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2024-10-15 00:02:44,720 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:44,810 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2024-10-15 00:02:44,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5129712] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:44,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:44,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 3, 3] total 26 [2024-10-15 00:02:44,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068323192] [2024-10-15 00:02:44,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:44,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-15 00:02:44,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:44,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-15 00:02:44,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2024-10-15 00:02:44,850 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-15 00:02:44,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 142 transitions, 870 flow. Second operand has 27 states, 27 states have (on average 16.59259259259259) internal successors, (448), 27 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:44,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:44,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-15 00:02:44,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:45,908 INFO L124 PetriNetUnfolderBase]: 2890/5103 cut-off events. [2024-10-15 00:02:45,908 INFO L125 PetriNetUnfolderBase]: For 13965/14511 co-relation queries the response was YES. [2024-10-15 00:02:45,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16059 conditions, 5103 events. 2890/5103 cut-off events. For 13965/14511 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 28280 event pairs, 56 based on Foata normal form. 64/5152 useless extension candidates. Maximal degree in co-relation 15661. Up to 1000 conditions per place. [2024-10-15 00:02:45,924 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 0 selfloop transitions, 0 changer transitions 599/599 dead transitions. [2024-10-15 00:02:45,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 599 transitions, 4292 flow [2024-10-15 00:02:45,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-15 00:02:45,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-15 00:02:45,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 613 transitions. [2024-10-15 00:02:45,926 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5675925925925925 [2024-10-15 00:02:45,926 INFO L175 Difference]: Start difference. First operand has 145 places, 142 transitions, 870 flow. Second operand 27 states and 613 transitions. [2024-10-15 00:02:45,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 599 transitions, 4292 flow [2024-10-15 00:02:45,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 599 transitions, 4021 flow, removed 52 selfloop flow, removed 37 redundant places. [2024-10-15 00:02:45,945 INFO L231 Difference]: Finished difference. Result has 132 places, 0 transitions, 0 flow [2024-10-15 00:02:45,945 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=0, PETRI_PLACES=132, PETRI_TRANSITIONS=0} [2024-10-15 00:02:45,945 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 93 predicate places. [2024-10-15 00:02:45,945 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 0 transitions, 0 flow [2024-10-15 00:02:45,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 16.59259259259259) internal successors, (448), 27 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:45,948 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2024-10-15 00:02:45,948 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2024-10-15 00:02:45,948 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2024-10-15 00:02:45,948 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2024-10-15 00:02:45,948 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2024-10-15 00:02:45,948 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2024-10-15 00:02:45,949 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2024-10-15 00:02:45,949 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2024-10-15 00:02:45,949 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2024-10-15 00:02:45,949 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2024-10-15 00:02:45,949 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2024-10-15 00:02:45,949 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2024-10-15 00:02:45,949 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2024-10-15 00:02:45,949 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2024-10-15 00:02:45,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-15 00:02:46,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-15 00:02:46,150 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:46,159 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-15 00:02:46,159 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-15 00:02:46,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 12:02:46 BasicIcfg [2024-10-15 00:02:46,165 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-15 00:02:46,166 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-15 00:02:46,166 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-15 00:02:46,166 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-15 00:02:46,166 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:02:31" (3/4) ... [2024-10-15 00:02:46,167 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-15 00:02:46,170 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-15 00:02:46,170 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-15 00:02:46,174 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2024-10-15 00:02:46,175 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2024-10-15 00:02:46,175 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-10-15 00:02:46,175 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-15 00:02:46,243 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-15 00:02:46,243 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-15 00:02:46,243 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-15 00:02:46,243 INFO L158 Benchmark]: Toolchain (without parser) took 16374.15ms. Allocated memory was 167.8MB in the beginning and 559.9MB in the end (delta: 392.2MB). Free memory was 99.4MB in the beginning and 174.7MB in the end (delta: -75.3MB). Peak memory consumption was 319.0MB. Max. memory is 16.1GB. [2024-10-15 00:02:46,244 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 117.4MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 00:02:46,244 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.46ms. Allocated memory is still 167.8MB. Free memory was 99.2MB in the beginning and 86.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-15 00:02:46,244 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.10ms. Allocated memory is still 167.8MB. Free memory was 86.6MB in the beginning and 84.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 00:02:46,244 INFO L158 Benchmark]: Boogie Preprocessor took 90.58ms. Allocated memory is still 167.8MB. Free memory was 84.3MB in the beginning and 81.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 00:02:46,244 INFO L158 Benchmark]: RCFGBuilder took 1003.27ms. Allocated memory is still 167.8MB. Free memory was 81.6MB in the beginning and 87.9MB in the end (delta: -6.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-15 00:02:46,245 INFO L158 Benchmark]: TraceAbstraction took 14844.68ms. Allocated memory was 167.8MB in the beginning and 559.9MB in the end (delta: 392.2MB). Free memory was 87.2MB in the beginning and 180.5MB in the end (delta: -93.2MB). Peak memory consumption was 300.7MB. Max. memory is 16.1GB. [2024-10-15 00:02:46,245 INFO L158 Benchmark]: Witness Printer took 77.40ms. Allocated memory is still 559.9MB. Free memory was 180.5MB in the beginning and 174.7MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-15 00:02:46,246 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 117.4MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.46ms. Allocated memory is still 167.8MB. Free memory was 99.2MB in the beginning and 86.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.10ms. Allocated memory is still 167.8MB. Free memory was 86.6MB in the beginning and 84.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 90.58ms. Allocated memory is still 167.8MB. Free memory was 84.3MB in the beginning and 81.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1003.27ms. Allocated memory is still 167.8MB. Free memory was 81.6MB in the beginning and 87.9MB in the end (delta: -6.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 14844.68ms. Allocated memory was 167.8MB in the beginning and 559.9MB in the end (delta: 392.2MB). Free memory was 87.2MB in the beginning and 180.5MB in the end (delta: -93.2MB). Peak memory consumption was 300.7MB. Max. memory is 16.1GB. * Witness Printer took 77.40ms. Allocated memory is still 559.9MB. Free memory was 180.5MB in the beginning and 174.7MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: 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: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: 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: 14.7s, OverallIterations: 17, TraceHistogramMax: 13, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1848 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1761 mSDsluCounter, 422 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 403 mSDsCounter, 215 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3785 IncrementalHoareTripleChecker+Invalid, 4000 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 215 mSolverCounterUnsat, 19 mSDtfsCounter, 3785 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 808 GetRequests, 499 SyntacticMatches, 7 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2156 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=887occurred in iteration=14, InterpolantAutomatonStates: 212, 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, 0.4s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 668 NumberOfCodeBlocks, 538 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 896 ConstructedInterpolants, 0 QuantifiedInterpolants, 2396 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1479 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 37 InterpolantComputations, 8 PerfectInterpolantSequences, 1052/2149 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! [2024-10-15 00:02:46,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE