./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-more-array-sum-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:06:31,119 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:06:31,198 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:06:31,203 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:06:31,203 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:06:31,232 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:06:31,233 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:06:31,234 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:06:31,235 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:06:31,236 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:06:31,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:06:31,237 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:06:31,238 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:06:31,238 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:06:31,239 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:06:31,239 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:06:31,239 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:06:31,240 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:06:31,240 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:06:31,242 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:06:31,242 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:06:31,243 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:06:31,243 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:06:31,244 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:06:31,244 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:06:31,244 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:06:31,245 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:06:31,245 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:06:31,245 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:06:31,246 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:06:31,246 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:06:31,246 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:06:31,247 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:06:31,247 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:06:31,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:06:31,247 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:06:31,248 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:06:31,248 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:06:31,248 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:06:31,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:06:31,249 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:06:31,254 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:06:31,254 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:06:31,254 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:06:31,254 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a [2024-10-12 00:06:31,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:06:31,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:06:31,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:06:31,569 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:06:31,570 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:06:31,571 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-10-12 00:06:33,101 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:06:33,306 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:06:33,309 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-10-12 00:06:33,329 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d6b399c2e/e1ccc46f9fa24079a90910ef5a3aea99/FLAG4d9d8f551 [2024-10-12 00:06:33,347 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d6b399c2e/e1ccc46f9fa24079a90910ef5a3aea99 [2024-10-12 00:06:33,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:06:33,351 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:06:33,352 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:06:33,352 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:06:33,357 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:06:33,358 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:06:33" (1/1) ... [2024-10-12 00:06:33,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2301bedf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:33, skipping insertion in model container [2024-10-12 00:06:33,359 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:06:33" (1/1) ... [2024-10-12 00:06:33,385 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:06:33,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:06:33,650 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:06:33,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:06:33,748 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:06:33,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:33 WrapperNode [2024-10-12 00:06:33,749 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:06:33,751 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:06:33,751 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:06:33,751 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:06:33,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:33" (1/1) ... [2024-10-12 00:06:33,768 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:33" (1/1) ... [2024-10-12 00:06:33,817 INFO L138 Inliner]: procedures = 24, calls = 31, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 234 [2024-10-12 00:06:33,818 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:06:33,819 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:06:33,819 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:06:33,819 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:06:33,832 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:33" (1/1) ... [2024-10-12 00:06:33,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:33" (1/1) ... [2024-10-12 00:06:33,843 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:33" (1/1) ... [2024-10-12 00:06:33,891 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-12 00:06:33,892 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:33" (1/1) ... [2024-10-12 00:06:33,896 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:33" (1/1) ... [2024-10-12 00:06:33,908 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:33" (1/1) ... [2024-10-12 00:06:33,914 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:33" (1/1) ... [2024-10-12 00:06:33,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:33" (1/1) ... [2024-10-12 00:06:33,924 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:33" (1/1) ... [2024-10-12 00:06:33,927 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:06:33,930 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:06:33,930 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:06:33,930 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:06:33,932 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:33" (1/1) ... [2024-10-12 00:06:33,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:06:33,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:33,972 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 00:06:33,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 00:06:34,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:06:34,019 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:06:34,019 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:06:34,020 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:06:34,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:06:34,020 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-12 00:06:34,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-12 00:06:34,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:06:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 00:06:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-12 00:06:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-12 00:06:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-12 00:06:34,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-12 00:06:34,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-12 00:06:34,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:06:34,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:06:34,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-12 00:06:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-12 00:06:34,025 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-12 00:06:34,135 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:06:34,138 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:06:34,620 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:06:34,620 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:06:35,072 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:06:35,073 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-12 00:06:35,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:06:35 BoogieIcfgContainer [2024-10-12 00:06:35,075 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:06:35,077 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:06:35,078 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:06:35,082 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:06:35,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:06:33" (1/3) ... [2024-10-12 00:06:35,083 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d143c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:06:35, skipping insertion in model container [2024-10-12 00:06:35,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:33" (2/3) ... [2024-10-12 00:06:35,083 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d143c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:06:35, skipping insertion in model container [2024-10-12 00:06:35,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:06:35" (3/3) ... [2024-10-12 00:06:35,086 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2024-10-12 00:06:35,107 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:06:35,108 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-10-12 00:06:35,108 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:06:35,231 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-12 00:06:35,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 65 transitions, 151 flow [2024-10-12 00:06:35,319 INFO L124 PetriNetUnfolderBase]: 4/62 cut-off events. [2024-10-12 00:06:35,319 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-12 00:06:35,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 62 events. 4/62 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 226 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2024-10-12 00:06:35,325 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 65 transitions, 151 flow [2024-10-12 00:06:35,330 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 60 transitions, 135 flow [2024-10-12 00:06:35,343 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:06:35,351 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;@70a0f07c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:06:35,351 INFO L334 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2024-10-12 00:06:35,354 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:06:35,354 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-12 00:06:35,354 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:06:35,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:35,355 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-12 00:06:35,356 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-12 00:06:35,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:35,362 INFO L85 PathProgramCache]: Analyzing trace with hash 773833, now seen corresponding path program 1 times [2024-10-12 00:06:35,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:35,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413610115] [2024-10-12 00:06:35,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:35,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:35,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:35,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:35,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413610115] [2024-10-12 00:06:35,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413610115] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:35,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:35,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:06:35,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005032565] [2024-10-12 00:06:35,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:35,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:06:35,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:35,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:06:35,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:06:35,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2024-10-12 00:06:35,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-10-12 00:06:35,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:35,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2024-10-12 00:06:35,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:37,015 INFO L124 PetriNetUnfolderBase]: 2971/4590 cut-off events. [2024-10-12 00:06:37,016 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-10-12 00:06:37,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9031 conditions, 4590 events. 2971/4590 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 29803 event pairs, 2534 based on Foata normal form. 1/2610 useless extension candidates. Maximal degree in co-relation 8514. Up to 4217 conditions per place. [2024-10-12 00:06:37,071 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 37 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-10-12 00:06:37,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 211 flow [2024-10-12 00:06:37,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:06:37,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:06:37,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-10-12 00:06:37,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-10-12 00:06:37,089 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 135 flow. Second operand 4 states and 125 transitions. [2024-10-12 00:06:37,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 211 flow [2024-10-12 00:06:37,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 202 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-12 00:06:37,102 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 143 flow [2024-10-12 00:06:37,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2024-10-12 00:06:37,112 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -6 predicate places. [2024-10-12 00:06:37,113 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 143 flow [2024-10-12 00:06:37,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-10-12 00:06:37,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:37,114 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-12 00:06:37,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:06:37,115 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-12 00:06:37,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:37,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1579194334, now seen corresponding path program 1 times [2024-10-12 00:06:37,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:37,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266549765] [2024-10-12 00:06:37,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:37,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:37,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:37,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:37,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266549765] [2024-10-12 00:06:37,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266549765] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:37,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753270662] [2024-10-12 00:06:37,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:37,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:37,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:37,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:37,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 00:06:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:37,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:06:37,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:37,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:37,466 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:06:37,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753270662] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:37,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:06:37,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-12 00:06:37,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179208919] [2024-10-12 00:06:37,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:37,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:06:37,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:37,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:06:37,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:06:37,482 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2024-10-12 00:06:37,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2024-10-12 00:06:37,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:37,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2024-10-12 00:06:37,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:38,335 INFO L124 PetriNetUnfolderBase]: 2971/4589 cut-off events. [2024-10-12 00:06:38,336 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-12 00:06:38,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8959 conditions, 4589 events. 2971/4589 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 29904 event pairs, 2534 based on Foata normal form. 1/2610 useless extension candidates. Maximal degree in co-relation 8932. Up to 4212 conditions per place. [2024-10-12 00:06:38,369 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 33 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-10-12 00:06:38,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 56 transitions, 219 flow [2024-10-12 00:06:38,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:06:38,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:06:38,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-10-12 00:06:38,375 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3974358974358974 [2024-10-12 00:06:38,375 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 143 flow. Second operand 6 states and 155 transitions. [2024-10-12 00:06:38,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 56 transitions, 219 flow [2024-10-12 00:06:38,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 56 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:06:38,379 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 150 flow [2024-10-12 00:06:38,379 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=150, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-10-12 00:06:38,380 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -3 predicate places. [2024-10-12 00:06:38,380 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 150 flow [2024-10-12 00:06:38,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2024-10-12 00:06:38,380 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:38,381 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-12 00:06:38,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 00:06:38,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:38,582 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-12 00:06:38,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:38,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1581743135, now seen corresponding path program 1 times [2024-10-12 00:06:38,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:38,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784231579] [2024-10-12 00:06:38,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:38,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:38,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:38,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:38,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784231579] [2024-10-12 00:06:38,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784231579] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:38,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:38,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:06:38,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977661195] [2024-10-12 00:06:38,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:38,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:06:38,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:38,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:06:38,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:06:38,730 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-10-12 00:06:38,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2024-10-12 00:06:38,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:38,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-10-12 00:06:38,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:39,855 INFO L124 PetriNetUnfolderBase]: 4377/6876 cut-off events. [2024-10-12 00:06:39,856 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-10-12 00:06:39,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13382 conditions, 6876 events. 4377/6876 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 46724 event pairs, 3263 based on Foata normal form. 0/4093 useless extension candidates. Maximal degree in co-relation 10025. Up to 4714 conditions per place. [2024-10-12 00:06:39,914 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 82 selfloop transitions, 5 changer transitions 0/103 dead transitions. [2024-10-12 00:06:39,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 103 transitions, 427 flow [2024-10-12 00:06:39,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:06:39,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:06:39,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 188 transitions. [2024-10-12 00:06:39,917 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5784615384615385 [2024-10-12 00:06:39,917 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 150 flow. Second operand 5 states and 188 transitions. [2024-10-12 00:06:39,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 103 transitions, 427 flow [2024-10-12 00:06:39,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 103 transitions, 405 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-12 00:06:39,920 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 153 flow [2024-10-12 00:06:39,920 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-10-12 00:06:39,921 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -2 predicate places. [2024-10-12 00:06:39,921 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 153 flow [2024-10-12 00:06:39,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2024-10-12 00:06:39,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:39,922 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-12 00:06:39,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 00:06:39,922 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-12 00:06:39,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:39,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1710384875, now seen corresponding path program 1 times [2024-10-12 00:06:39,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:39,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802826155] [2024-10-12 00:06:39,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:39,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:40,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:40,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:40,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802826155] [2024-10-12 00:06:40,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802826155] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:40,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157203077] [2024-10-12 00:06:40,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:40,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:40,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:40,029 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:40,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 00:06:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:40,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:06:40,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:40,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:40,155 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:40,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:40,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157203077] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:40,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:40,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-12 00:06:40,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474050742] [2024-10-12 00:06:40,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:40,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:06:40,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:40,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:06:40,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:06:40,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2024-10-12 00:06:40,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 153 flow. Second operand has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 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) [2024-10-12 00:06:40,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:40,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2024-10-12 00:06:40,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:41,068 INFO L124 PetriNetUnfolderBase]: 4026/6344 cut-off events. [2024-10-12 00:06:41,068 INFO L125 PetriNetUnfolderBase]: For 1171/1275 co-relation queries the response was YES. [2024-10-12 00:06:41,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13244 conditions, 6344 events. 4026/6344 cut-off events. For 1171/1275 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 43714 event pairs, 3468 based on Foata normal form. 3/3762 useless extension candidates. Maximal degree in co-relation 9327. Up to 5782 conditions per place. [2024-10-12 00:06:41,107 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 38 selfloop transitions, 13 changer transitions 0/67 dead transitions. [2024-10-12 00:06:41,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 67 transitions, 285 flow [2024-10-12 00:06:41,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:06:41,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:06:41,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2024-10-12 00:06:41,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3723076923076923 [2024-10-12 00:06:41,110 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 153 flow. Second operand 10 states and 242 transitions. [2024-10-12 00:06:41,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 67 transitions, 285 flow [2024-10-12 00:06:41,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 67 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:06:41,114 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 222 flow [2024-10-12 00:06:41,115 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=222, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2024-10-12 00:06:41,116 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2024-10-12 00:06:41,117 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 222 flow [2024-10-12 00:06:41,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 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) [2024-10-12 00:06:41,117 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:41,117 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:41,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 00:06:41,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:41,322 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-12 00:06:41,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:41,323 INFO L85 PathProgramCache]: Analyzing trace with hash -400621260, now seen corresponding path program 1 times [2024-10-12 00:06:41,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:41,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931721892] [2024-10-12 00:06:41,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:41,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:41,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:41,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:41,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931721892] [2024-10-12 00:06:41,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931721892] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:41,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:41,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:06:41,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374681025] [2024-10-12 00:06:41,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:41,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:06:41,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:41,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:06:41,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:06:41,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-10-12 00:06:41,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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) [2024-10-12 00:06:41,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:41,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-10-12 00:06:41,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:42,400 INFO L124 PetriNetUnfolderBase]: 3682/5799 cut-off events. [2024-10-12 00:06:42,401 INFO L125 PetriNetUnfolderBase]: For 709/871 co-relation queries the response was YES. [2024-10-12 00:06:42,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11856 conditions, 5799 events. 3682/5799 cut-off events. For 709/871 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 38055 event pairs, 3023 based on Foata normal form. 0/3441 useless extension candidates. Maximal degree in co-relation 11820. Up to 4743 conditions per place. [2024-10-12 00:06:42,449 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 76 selfloop transitions, 5 changer transitions 2/99 dead transitions. [2024-10-12 00:06:42,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 99 transitions, 469 flow [2024-10-12 00:06:42,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:06:42,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:06:42,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2024-10-12 00:06:42,451 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-10-12 00:06:42,452 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 222 flow. Second operand 5 states and 175 transitions. [2024-10-12 00:06:42,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 99 transitions, 469 flow [2024-10-12 00:06:42,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 99 transitions, 458 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-12 00:06:42,458 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 236 flow [2024-10-12 00:06:42,458 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2024-10-12 00:06:42,460 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2024-10-12 00:06:42,460 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 236 flow [2024-10-12 00:06:42,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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) [2024-10-12 00:06:42,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:42,461 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:42,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 00:06:42,461 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-12 00:06:42,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:42,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1290035478, now seen corresponding path program 1 times [2024-10-12 00:06:42,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:42,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827161829] [2024-10-12 00:06:42,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:42,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:42,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:42,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827161829] [2024-10-12 00:06:42,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827161829] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:42,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172788155] [2024-10-12 00:06:42,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:42,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:42,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:42,740 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:42,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 00:06:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:42,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-12 00:06:42,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:42,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-12 00:06:42,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:42,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:43,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-12 00:06:43,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-10-12 00:06:43,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:43,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172788155] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:43,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:43,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-12 00:06:43,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472332643] [2024-10-12 00:06:43,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:43,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 00:06:43,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:43,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 00:06:43,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-12 00:06:43,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-10-12 00:06:43,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 236 flow. Second operand has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 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) [2024-10-12 00:06:43,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:43,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-10-12 00:06:43,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:44,492 INFO L124 PetriNetUnfolderBase]: 5230/8958 cut-off events. [2024-10-12 00:06:44,493 INFO L125 PetriNetUnfolderBase]: For 1490/1867 co-relation queries the response was YES. [2024-10-12 00:06:44,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18203 conditions, 8958 events. 5230/8958 cut-off events. For 1490/1867 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 70477 event pairs, 1573 based on Foata normal form. 0/5564 useless extension candidates. Maximal degree in co-relation 18165. Up to 2500 conditions per place. [2024-10-12 00:06:44,569 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 99 selfloop transitions, 16 changer transitions 1/133 dead transitions. [2024-10-12 00:06:44,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 133 transitions, 618 flow [2024-10-12 00:06:44,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 00:06:44,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-12 00:06:44,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 276 transitions. [2024-10-12 00:06:44,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5307692307692308 [2024-10-12 00:06:44,572 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 236 flow. Second operand 8 states and 276 transitions. [2024-10-12 00:06:44,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 133 transitions, 618 flow [2024-10-12 00:06:44,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 133 transitions, 613 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:06:44,577 INFO L231 Difference]: Finished difference. Result has 85 places, 75 transitions, 304 flow [2024-10-12 00:06:44,577 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=304, PETRI_PLACES=85, PETRI_TRANSITIONS=75} [2024-10-12 00:06:44,578 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 19 predicate places. [2024-10-12 00:06:44,578 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 75 transitions, 304 flow [2024-10-12 00:06:44,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 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) [2024-10-12 00:06:44,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:44,579 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:44,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 00:06:44,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:44,784 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-12 00:06:44,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:44,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1290035477, now seen corresponding path program 1 times [2024-10-12 00:06:44,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:44,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540638593] [2024-10-12 00:06:44,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:44,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:45,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:45,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:45,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540638593] [2024-10-12 00:06:45,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540638593] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:45,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927657258] [2024-10-12 00:06:45,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:45,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:45,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:45,055 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:45,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 00:06:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:45,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-12 00:06:45,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:45,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-12 00:06:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:45,219 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:45,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-10-12 00:06:45,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-12 00:06:45,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:45,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927657258] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:45,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:45,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-10-12 00:06:45,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236438736] [2024-10-12 00:06:45,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:45,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-12 00:06:45,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:45,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-12 00:06:45,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-12 00:06:45,322 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-10-12 00:06:45,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 75 transitions, 304 flow. Second operand has 13 states, 13 states have (on average 22.53846153846154) internal successors, (293), 13 states have internal predecessors, (293), 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) [2024-10-12 00:06:45,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:45,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-10-12 00:06:45,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:46,760 INFO L124 PetriNetUnfolderBase]: 4876/8459 cut-off events. [2024-10-12 00:06:46,760 INFO L125 PetriNetUnfolderBase]: For 3929/4287 co-relation queries the response was YES. [2024-10-12 00:06:46,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20080 conditions, 8459 events. 4876/8459 cut-off events. For 3929/4287 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 65799 event pairs, 1573 based on Foata normal form. 0/5501 useless extension candidates. Maximal degree in co-relation 20039. Up to 2359 conditions per place. [2024-10-12 00:06:46,856 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 98 selfloop transitions, 16 changer transitions 1/132 dead transitions. [2024-10-12 00:06:46,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 132 transitions, 666 flow [2024-10-12 00:06:46,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 00:06:46,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-12 00:06:46,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 275 transitions. [2024-10-12 00:06:46,859 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5288461538461539 [2024-10-12 00:06:46,859 INFO L175 Difference]: Start difference. First operand has 85 places, 75 transitions, 304 flow. Second operand 8 states and 275 transitions. [2024-10-12 00:06:46,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 132 transitions, 666 flow [2024-10-12 00:06:46,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 132 transitions, 649 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-12 00:06:46,868 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 315 flow [2024-10-12 00:06:46,868 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=315, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2024-10-12 00:06:46,869 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 21 predicate places. [2024-10-12 00:06:46,869 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 315 flow [2024-10-12 00:06:46,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.53846153846154) internal successors, (293), 13 states have internal predecessors, (293), 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) [2024-10-12 00:06:46,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:46,870 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:46,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-12 00:06:47,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-12 00:06:47,071 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-12 00:06:47,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:47,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1290035474, now seen corresponding path program 1 times [2024-10-12 00:06:47,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:47,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832541114] [2024-10-12 00:06:47,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:47,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:47,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:47,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:47,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832541114] [2024-10-12 00:06:47,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832541114] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:47,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:47,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-12 00:06:47,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595783643] [2024-10-12 00:06:47,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:47,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:06:47,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:47,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:06:47,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:06:47,207 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-10-12 00:06:47,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 315 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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) [2024-10-12 00:06:47,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:47,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-10-12 00:06:47,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:48,191 INFO L124 PetriNetUnfolderBase]: 4512/8124 cut-off events. [2024-10-12 00:06:48,191 INFO L125 PetriNetUnfolderBase]: For 6519/6818 co-relation queries the response was YES. [2024-10-12 00:06:48,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20000 conditions, 8124 events. 4512/8124 cut-off events. For 6519/6818 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 63834 event pairs, 1253 based on Foata normal form. 0/5710 useless extension candidates. Maximal degree in co-relation 19959. Up to 4355 conditions per place. [2024-10-12 00:06:48,276 INFO L140 encePairwiseOnDemand]: 61/65 looper letters, 76 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2024-10-12 00:06:48,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 95 transitions, 518 flow [2024-10-12 00:06:48,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:06:48,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:06:48,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-10-12 00:06:48,278 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6461538461538462 [2024-10-12 00:06:48,278 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 315 flow. Second operand 3 states and 126 transitions. [2024-10-12 00:06:48,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 95 transitions, 518 flow [2024-10-12 00:06:48,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 95 transitions, 503 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-12 00:06:48,287 INFO L231 Difference]: Finished difference. Result has 84 places, 72 transitions, 296 flow [2024-10-12 00:06:48,287 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=84, PETRI_TRANSITIONS=72} [2024-10-12 00:06:48,288 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 18 predicate places. [2024-10-12 00:06:48,289 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 72 transitions, 296 flow [2024-10-12 00:06:48,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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) [2024-10-12 00:06:48,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:48,289 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:48,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 00:06:48,290 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-12 00:06:48,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:48,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1536299316, now seen corresponding path program 1 times [2024-10-12 00:06:48,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:48,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158222015] [2024-10-12 00:06:48,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:48,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:48,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:48,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:48,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158222015] [2024-10-12 00:06:48,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158222015] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:48,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:48,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:06:48,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362688773] [2024-10-12 00:06:48,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:48,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:06:48,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:48,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:06:48,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:06:48,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-10-12 00:06:48,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 72 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:48,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:48,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-10-12 00:06:48,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:49,323 INFO L124 PetriNetUnfolderBase]: 4769/7585 cut-off events. [2024-10-12 00:06:49,324 INFO L125 PetriNetUnfolderBase]: For 6642/7180 co-relation queries the response was YES. [2024-10-12 00:06:49,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19872 conditions, 7585 events. 4769/7585 cut-off events. For 6642/7180 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 51695 event pairs, 4132 based on Foata normal form. 0/5093 useless extension candidates. Maximal degree in co-relation 19831. Up to 6599 conditions per place. [2024-10-12 00:06:49,383 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 49 selfloop transitions, 2 changer transitions 22/89 dead transitions. [2024-10-12 00:06:49,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 89 transitions, 498 flow [2024-10-12 00:06:49,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:06:49,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:06:49,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-10-12 00:06:49,385 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49846153846153846 [2024-10-12 00:06:49,385 INFO L175 Difference]: Start difference. First operand has 84 places, 72 transitions, 296 flow. Second operand 5 states and 162 transitions. [2024-10-12 00:06:49,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 89 transitions, 498 flow [2024-10-12 00:06:49,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 496 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:06:49,393 INFO L231 Difference]: Finished difference. Result has 89 places, 67 transitions, 276 flow [2024-10-12 00:06:49,394 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=276, PETRI_PLACES=89, PETRI_TRANSITIONS=67} [2024-10-12 00:06:49,395 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 23 predicate places. [2024-10-12 00:06:49,395 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 67 transitions, 276 flow [2024-10-12 00:06:49,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:49,395 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:49,395 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:49,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 00:06:49,396 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-12 00:06:49,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:49,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1521484720, now seen corresponding path program 1 times [2024-10-12 00:06:49,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:49,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289938242] [2024-10-12 00:06:49,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:49,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:49,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:49,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:49,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289938242] [2024-10-12 00:06:49,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289938242] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:49,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:49,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:06:49,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104215686] [2024-10-12 00:06:49,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:49,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:06:49,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:49,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:06:49,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:06:49,465 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-10-12 00:06:49,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 67 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-10-12 00:06:49,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:49,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-10-12 00:06:49,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:50,396 INFO L124 PetriNetUnfolderBase]: 5587/8602 cut-off events. [2024-10-12 00:06:50,397 INFO L125 PetriNetUnfolderBase]: For 5862/6477 co-relation queries the response was YES. [2024-10-12 00:06:50,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22017 conditions, 8602 events. 5587/8602 cut-off events. For 5862/6477 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 58866 event pairs, 2113 based on Foata normal form. 292/6275 useless extension candidates. Maximal degree in co-relation 21989. Up to 6433 conditions per place. [2024-10-12 00:06:50,482 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 92 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2024-10-12 00:06:50,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 110 transitions, 576 flow [2024-10-12 00:06:50,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:06:50,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:06:50,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-10-12 00:06:50,485 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6115384615384616 [2024-10-12 00:06:50,486 INFO L175 Difference]: Start difference. First operand has 89 places, 67 transitions, 276 flow. Second operand 4 states and 159 transitions. [2024-10-12 00:06:50,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 110 transitions, 576 flow [2024-10-12 00:06:50,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 110 transitions, 538 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-10-12 00:06:50,506 INFO L231 Difference]: Finished difference. Result has 81 places, 68 transitions, 275 flow [2024-10-12 00:06:50,506 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=81, PETRI_TRANSITIONS=68} [2024-10-12 00:06:50,508 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 15 predicate places. [2024-10-12 00:06:50,508 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 275 flow [2024-10-12 00:06:50,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-10-12 00:06:50,509 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:50,509 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:50,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 00:06:50,509 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-12 00:06:50,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:50,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1484102979, now seen corresponding path program 1 times [2024-10-12 00:06:50,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:50,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174740013] [2024-10-12 00:06:50,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:50,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:50,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:50,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:50,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174740013] [2024-10-12 00:06:50,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174740013] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:50,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:50,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-12 00:06:50,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414897406] [2024-10-12 00:06:50,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:50,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:06:50,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:50,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:06:50,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:06:50,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-10-12 00:06:50,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:50,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:50,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-10-12 00:06:50,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:51,831 INFO L124 PetriNetUnfolderBase]: 5773/9600 cut-off events. [2024-10-12 00:06:51,832 INFO L125 PetriNetUnfolderBase]: For 9032/9032 co-relation queries the response was YES. [2024-10-12 00:06:51,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24197 conditions, 9600 events. 5773/9600 cut-off events. For 9032/9032 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 71322 event pairs, 1694 based on Foata normal form. 0/6632 useless extension candidates. Maximal degree in co-relation 24165. Up to 5988 conditions per place. [2024-10-12 00:06:51,904 INFO L140 encePairwiseOnDemand]: 58/65 looper letters, 73 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2024-10-12 00:06:51,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 94 transitions, 539 flow [2024-10-12 00:06:51,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:06:51,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:06:51,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-10-12 00:06:51,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6461538461538462 [2024-10-12 00:06:51,906 INFO L175 Difference]: Start difference. First operand has 81 places, 68 transitions, 275 flow. Second operand 3 states and 126 transitions. [2024-10-12 00:06:51,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 94 transitions, 539 flow [2024-10-12 00:06:51,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 94 transitions, 527 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:06:51,911 INFO L231 Difference]: Finished difference. Result has 82 places, 70 transitions, 294 flow [2024-10-12 00:06:51,911 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=82, PETRI_TRANSITIONS=70} [2024-10-12 00:06:51,911 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 16 predicate places. [2024-10-12 00:06:51,911 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 70 transitions, 294 flow [2024-10-12 00:06:51,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:51,912 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:51,912 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:51,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 00:06:51,912 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-12 00:06:51,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:51,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1484102975, now seen corresponding path program 1 times [2024-10-12 00:06:51,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:51,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862767291] [2024-10-12 00:06:51,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:51,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:52,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:52,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:52,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862767291] [2024-10-12 00:06:52,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862767291] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:52,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197052005] [2024-10-12 00:06:52,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:52,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:52,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:52,129 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:52,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 00:06:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:52,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-12 00:06:52,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:52,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-12 00:06:52,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:52,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:52,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-12 00:06:52,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-10-12 00:06:52,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:52,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197052005] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:52,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:52,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-12 00:06:52,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122986545] [2024-10-12 00:06:52,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:52,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 00:06:52,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:52,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 00:06:52,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-12 00:06:52,410 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-10-12 00:06:52,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 70 transitions, 294 flow. Second operand has 11 states, 11 states have (on average 22.818181818181817) internal successors, (251), 11 states have internal predecessors, (251), 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) [2024-10-12 00:06:52,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:52,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-10-12 00:06:52,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:53,687 INFO L124 PetriNetUnfolderBase]: 7770/12807 cut-off events. [2024-10-12 00:06:53,688 INFO L125 PetriNetUnfolderBase]: For 9619/9619 co-relation queries the response was YES. [2024-10-12 00:06:53,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33788 conditions, 12807 events. 7770/12807 cut-off events. For 9619/9619 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 97886 event pairs, 2218 based on Foata normal form. 0/9671 useless extension candidates. Maximal degree in co-relation 33754. Up to 4112 conditions per place. [2024-10-12 00:06:53,785 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 90 selfloop transitions, 15 changer transitions 0/123 dead transitions. [2024-10-12 00:06:53,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 123 transitions, 737 flow [2024-10-12 00:06:53,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 00:06:53,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-12 00:06:53,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 253 transitions. [2024-10-12 00:06:53,787 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48653846153846153 [2024-10-12 00:06:53,787 INFO L175 Difference]: Start difference. First operand has 82 places, 70 transitions, 294 flow. Second operand 8 states and 253 transitions. [2024-10-12 00:06:53,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 123 transitions, 737 flow [2024-10-12 00:06:53,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 123 transitions, 733 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:06:53,794 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 366 flow [2024-10-12 00:06:53,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=366, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2024-10-12 00:06:53,795 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 24 predicate places. [2024-10-12 00:06:53,795 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 366 flow [2024-10-12 00:06:53,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.818181818181817) internal successors, (251), 11 states have internal predecessors, (251), 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) [2024-10-12 00:06:53,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:53,796 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:53,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 00:06:53,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-12 00:06:53,997 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-12 00:06:53,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:53,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1484102976, now seen corresponding path program 1 times [2024-10-12 00:06:53,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:53,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6881734] [2024-10-12 00:06:53,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:53,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:54,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:54,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:54,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6881734] [2024-10-12 00:06:54,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6881734] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:54,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302232798] [2024-10-12 00:06:54,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:54,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:54,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:54,215 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:54,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 00:06:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:54,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-12 00:06:54,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:54,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-12 00:06:54,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:54,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:54,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-10-12 00:06:54,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-12 00:06:54,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:54,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302232798] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:54,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:54,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-10-12 00:06:54,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324764311] [2024-10-12 00:06:54,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:54,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-12 00:06:54,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:54,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-12 00:06:54,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-12 00:06:54,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-10-12 00:06:54,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 366 flow. Second operand has 13 states, 13 states have (on average 23.0) internal successors, (299), 13 states have internal predecessors, (299), 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) [2024-10-12 00:06:54,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:54,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-10-12 00:06:54,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:55,816 INFO L124 PetriNetUnfolderBase]: 7018/11861 cut-off events. [2024-10-12 00:06:55,817 INFO L125 PetriNetUnfolderBase]: For 12693/12693 co-relation queries the response was YES. [2024-10-12 00:06:55,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35255 conditions, 11861 events. 7018/11861 cut-off events. For 12693/12693 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 92867 event pairs, 2060 based on Foata normal form. 310/9412 useless extension candidates. Maximal degree in co-relation 35216. Up to 3906 conditions per place. [2024-10-12 00:06:55,927 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 89 selfloop transitions, 15 changer transitions 0/122 dead transitions. [2024-10-12 00:06:55,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 122 transitions, 784 flow [2024-10-12 00:06:55,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 00:06:55,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-12 00:06:55,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 252 transitions. [2024-10-12 00:06:55,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4846153846153846 [2024-10-12 00:06:55,929 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 366 flow. Second operand 8 states and 252 transitions. [2024-10-12 00:06:55,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 122 transitions, 784 flow [2024-10-12 00:06:55,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 122 transitions, 774 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-12 00:06:55,939 INFO L231 Difference]: Finished difference. Result has 93 places, 75 transitions, 382 flow [2024-10-12 00:06:55,939 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=382, PETRI_PLACES=93, PETRI_TRANSITIONS=75} [2024-10-12 00:06:55,940 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 27 predicate places. [2024-10-12 00:06:55,940 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 75 transitions, 382 flow [2024-10-12 00:06:55,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.0) internal successors, (299), 13 states have internal predecessors, (299), 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) [2024-10-12 00:06:55,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:55,940 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:55,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-12 00:06:56,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-12 00:06:56,141 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-12 00:06:56,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:56,142 INFO L85 PathProgramCache]: Analyzing trace with hash 293847717, now seen corresponding path program 1 times [2024-10-12 00:06:56,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:56,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233380348] [2024-10-12 00:06:56,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:56,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:56,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:56,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:56,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233380348] [2024-10-12 00:06:56,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233380348] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:56,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:56,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:06:56,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434066857] [2024-10-12 00:06:56,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:56,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:06:56,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:56,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:06:56,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:06:56,200 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-10-12 00:06:56,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 75 transitions, 382 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-12 00:06:56,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:56,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-10-12 00:06:56,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:57,532 INFO L124 PetriNetUnfolderBase]: 9082/13791 cut-off events. [2024-10-12 00:06:57,532 INFO L125 PetriNetUnfolderBase]: For 19136/19136 co-relation queries the response was YES. [2024-10-12 00:06:57,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44333 conditions, 13791 events. 9082/13791 cut-off events. For 19136/19136 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 96836 event pairs, 4504 based on Foata normal form. 428/11255 useless extension candidates. Maximal degree in co-relation 44294. Up to 9028 conditions per place. [2024-10-12 00:06:57,685 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 104 selfloop transitions, 4 changer transitions 0/123 dead transitions. [2024-10-12 00:06:57,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 123 transitions, 814 flow [2024-10-12 00:06:57,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:06:57,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:06:57,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-10-12 00:06:57,687 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6115384615384616 [2024-10-12 00:06:57,687 INFO L175 Difference]: Start difference. First operand has 93 places, 75 transitions, 382 flow. Second operand 4 states and 159 transitions. [2024-10-12 00:06:57,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 123 transitions, 814 flow [2024-10-12 00:06:57,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 123 transitions, 801 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-12 00:06:57,707 INFO L231 Difference]: Finished difference. Result has 93 places, 76 transitions, 390 flow [2024-10-12 00:06:57,708 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=390, PETRI_PLACES=93, PETRI_TRANSITIONS=76} [2024-10-12 00:06:57,709 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 27 predicate places. [2024-10-12 00:06:57,709 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 76 transitions, 390 flow [2024-10-12 00:06:57,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-12 00:06:57,709 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:57,709 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:57,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 00:06:57,710 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-12 00:06:57,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:57,710 INFO L85 PathProgramCache]: Analyzing trace with hash 280090236, now seen corresponding path program 1 times [2024-10-12 00:06:57,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:57,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62368133] [2024-10-12 00:06:57,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:57,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:58,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:58,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62368133] [2024-10-12 00:06:58,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62368133] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:58,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756255478] [2024-10-12 00:06:58,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:58,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:58,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:58,187 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:58,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 00:06:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:58,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 00:06:58,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:58,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-12 00:06:58,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:58,749 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:59,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-12 00:06:59,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-10-12 00:06:59,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:59,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756255478] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:59,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:59,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-10-12 00:06:59,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437998364] [2024-10-12 00:06:59,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:59,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-12 00:06:59,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:59,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-12 00:06:59,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-10-12 00:06:59,392 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-10-12 00:06:59,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 76 transitions, 390 flow. Second operand has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 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) [2024-10-12 00:06:59,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:59,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-10-12 00:06:59,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:06,071 INFO L124 PetriNetUnfolderBase]: 28447/43984 cut-off events. [2024-10-12 00:07:06,071 INFO L125 PetriNetUnfolderBase]: For 74909/74909 co-relation queries the response was YES. [2024-10-12 00:07:06,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147861 conditions, 43984 events. 28447/43984 cut-off events. For 74909/74909 co-relation queries the response was YES. Maximal size of possible extension queue 2242. Compared 361853 event pairs, 10806 based on Foata normal form. 0/32850 useless extension candidates. Maximal degree in co-relation 147822. Up to 8965 conditions per place. [2024-10-12 00:07:06,547 INFO L140 encePairwiseOnDemand]: 52/65 looper letters, 284 selfloop transitions, 35 changer transitions 0/336 dead transitions. [2024-10-12 00:07:06,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 336 transitions, 2558 flow [2024-10-12 00:07:06,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 00:07:06,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-12 00:07:06,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 510 transitions. [2024-10-12 00:07:06,550 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5230769230769231 [2024-10-12 00:07:06,550 INFO L175 Difference]: Start difference. First operand has 93 places, 76 transitions, 390 flow. Second operand 15 states and 510 transitions. [2024-10-12 00:07:06,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 336 transitions, 2558 flow [2024-10-12 00:07:06,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 336 transitions, 2504 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:07:06,585 INFO L231 Difference]: Finished difference. Result has 110 places, 102 transitions, 590 flow [2024-10-12 00:07:06,585 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=590, PETRI_PLACES=110, PETRI_TRANSITIONS=102} [2024-10-12 00:07:06,585 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 44 predicate places. [2024-10-12 00:07:06,585 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 102 transitions, 590 flow [2024-10-12 00:07:06,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 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) [2024-10-12 00:07:06,586 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:06,586 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:07:06,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-12 00:07:06,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:07:06,787 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-12 00:07:06,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:06,787 INFO L85 PathProgramCache]: Analyzing trace with hash 280090235, now seen corresponding path program 1 times [2024-10-12 00:07:06,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:06,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934863515] [2024-10-12 00:07:06,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:06,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:07,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:07:07,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:07,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934863515] [2024-10-12 00:07:07,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934863515] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:07:07,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987090139] [2024-10-12 00:07:07,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:07,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:07:07,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:07:07,160 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:07:07,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 00:07:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:07,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 00:07:07,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:07:07,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-12 00:07:07,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:07:07,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:07:08,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-10-12 00:07:08,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-10-12 00:07:08,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:07:08,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987090139] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:07:08,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:07:08,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-10-12 00:07:08,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471892739] [2024-10-12 00:07:08,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:07:08,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-12 00:07:08,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:08,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-12 00:07:08,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-10-12 00:07:08,301 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-10-12 00:07:08,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 102 transitions, 590 flow. Second operand has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 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) [2024-10-12 00:07:08,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:08,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-10-12 00:07:08,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:15,948 INFO L124 PetriNetUnfolderBase]: 27421/42856 cut-off events. [2024-10-12 00:07:15,948 INFO L125 PetriNetUnfolderBase]: For 70088/70088 co-relation queries the response was YES. [2024-10-12 00:07:16,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157484 conditions, 42856 events. 27421/42856 cut-off events. For 70088/70088 co-relation queries the response was YES. Maximal size of possible extension queue 2183. Compared 356331 event pairs, 10806 based on Foata normal form. 536/33847 useless extension candidates. Maximal degree in co-relation 157436. Up to 8845 conditions per place. [2024-10-12 00:07:16,487 INFO L140 encePairwiseOnDemand]: 52/65 looper letters, 282 selfloop transitions, 35 changer transitions 0/334 dead transitions. [2024-10-12 00:07:16,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 334 transitions, 2646 flow [2024-10-12 00:07:16,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 00:07:16,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-12 00:07:16,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 508 transitions. [2024-10-12 00:07:16,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.521025641025641 [2024-10-12 00:07:16,491 INFO L175 Difference]: Start difference. First operand has 110 places, 102 transitions, 590 flow. Second operand 15 states and 508 transitions. [2024-10-12 00:07:16,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 334 transitions, 2646 flow [2024-10-12 00:07:16,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 334 transitions, 2637 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-12 00:07:16,739 INFO L231 Difference]: Finished difference. Result has 120 places, 102 transitions, 655 flow [2024-10-12 00:07:16,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=655, PETRI_PLACES=120, PETRI_TRANSITIONS=102} [2024-10-12 00:07:16,739 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 54 predicate places. [2024-10-12 00:07:16,740 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 102 transitions, 655 flow [2024-10-12 00:07:16,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 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) [2024-10-12 00:07:16,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:16,740 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:07:16,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-12 00:07:16,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-12 00:07:16,943 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-12 00:07:16,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:16,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1762250554, now seen corresponding path program 1 times [2024-10-12 00:07:16,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:16,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945199982] [2024-10-12 00:07:16,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:16,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:17,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:07:17,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:17,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945199982] [2024-10-12 00:07:17,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945199982] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:07:17,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552541695] [2024-10-12 00:07:17,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:17,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:07:17,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:07:17,070 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:07:17,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 00:07:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:17,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 00:07:17,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:07:17,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:07:17,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:07:17,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:07:17,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552541695] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:07:17,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:07:17,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-10-12 00:07:17,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507014959] [2024-10-12 00:07:17,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:07:17,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-12 00:07:17,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:17,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-12 00:07:17,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-10-12 00:07:17,485 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2024-10-12 00:07:17,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 102 transitions, 655 flow. Second operand has 20 states, 20 states have (on average 16.55) internal successors, (331), 20 states have internal predecessors, (331), 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) [2024-10-12 00:07:17,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:17,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2024-10-12 00:07:17,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:24,298 INFO L124 PetriNetUnfolderBase]: 28635/44137 cut-off events. [2024-10-12 00:07:24,298 INFO L125 PetriNetUnfolderBase]: For 90623/91816 co-relation queries the response was YES. [2024-10-12 00:07:24,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167176 conditions, 44137 events. 28635/44137 cut-off events. For 90623/91816 co-relation queries the response was YES. Maximal size of possible extension queue 1978. Compared 351251 event pairs, 20708 based on Foata normal form. 689/35803 useless extension candidates. Maximal degree in co-relation 167126. Up to 30864 conditions per place. [2024-10-12 00:07:25,084 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 201 selfloop transitions, 16 changer transitions 0/232 dead transitions. [2024-10-12 00:07:25,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 232 transitions, 1862 flow [2024-10-12 00:07:25,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:07:25,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:07:25,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 291 transitions. [2024-10-12 00:07:25,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44769230769230767 [2024-10-12 00:07:25,087 INFO L175 Difference]: Start difference. First operand has 120 places, 102 transitions, 655 flow. Second operand 10 states and 291 transitions. [2024-10-12 00:07:25,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 232 transitions, 1862 flow [2024-10-12 00:07:25,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 232 transitions, 1802 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-10-12 00:07:25,338 INFO L231 Difference]: Finished difference. Result has 124 places, 107 transitions, 708 flow [2024-10-12 00:07:25,339 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=708, PETRI_PLACES=124, PETRI_TRANSITIONS=107} [2024-10-12 00:07:25,339 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 58 predicate places. [2024-10-12 00:07:25,339 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 107 transitions, 708 flow [2024-10-12 00:07:25,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 16.55) internal successors, (331), 20 states have internal predecessors, (331), 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) [2024-10-12 00:07:25,340 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:25,340 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:07:25,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 00:07:25,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-12 00:07:25,541 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-12 00:07:25,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:25,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1416192319, now seen corresponding path program 1 times [2024-10-12 00:07:25,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:25,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612635246] [2024-10-12 00:07:25,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:25,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:25,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:07:25,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:25,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612635246] [2024-10-12 00:07:25,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612635246] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:07:25,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:07:25,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:07:25,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909800195] [2024-10-12 00:07:25,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:07:25,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:07:25,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:25,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:07:25,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:07:25,633 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-10-12 00:07:25,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 107 transitions, 708 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 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) [2024-10-12 00:07:25,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:25,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-10-12 00:07:25,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:31,215 INFO L124 PetriNetUnfolderBase]: 24157/36351 cut-off events. [2024-10-12 00:07:31,215 INFO L125 PetriNetUnfolderBase]: For 92174/93349 co-relation queries the response was YES. [2024-10-12 00:07:31,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144925 conditions, 36351 events. 24157/36351 cut-off events. For 92174/93349 co-relation queries the response was YES. Maximal size of possible extension queue 1702. Compared 281889 event pairs, 4627 based on Foata normal form. 1311/31429 useless extension candidates. Maximal degree in co-relation 144871. Up to 20298 conditions per place. [2024-10-12 00:07:31,670 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 135 selfloop transitions, 15 changer transitions 0/169 dead transitions. [2024-10-12 00:07:31,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 169 transitions, 1456 flow [2024-10-12 00:07:31,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:07:31,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:07:31,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-10-12 00:07:31,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5138461538461538 [2024-10-12 00:07:31,671 INFO L175 Difference]: Start difference. First operand has 124 places, 107 transitions, 708 flow. Second operand 5 states and 167 transitions. [2024-10-12 00:07:31,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 169 transitions, 1456 flow [2024-10-12 00:07:31,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 169 transitions, 1420 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-12 00:07:31,814 INFO L231 Difference]: Finished difference. Result has 121 places, 106 transitions, 704 flow [2024-10-12 00:07:31,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=704, PETRI_PLACES=121, PETRI_TRANSITIONS=106} [2024-10-12 00:07:31,815 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 55 predicate places. [2024-10-12 00:07:31,815 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 106 transitions, 704 flow [2024-10-12 00:07:31,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 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) [2024-10-12 00:07:31,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:31,816 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-12 00:07:31,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 00:07:31,816 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-12 00:07:31,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:31,816 INFO L85 PathProgramCache]: Analyzing trace with hash -51210848, now seen corresponding path program 2 times [2024-10-12 00:07:31,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:31,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882099169] [2024-10-12 00:07:31,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:31,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:31,965 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:07:31,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:31,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882099169] [2024-10-12 00:07:31,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882099169] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:07:31,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073146026] [2024-10-12 00:07:31,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:07:31,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:07:31,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:07:31,970 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:07:31,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 00:07:32,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:07:32,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:07:32,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:07:32,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:07:32,112 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 00:07:32,112 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:07:32,139 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 00:07:32,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073146026] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:07:32,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:07:32,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-12 00:07:32,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779045175] [2024-10-12 00:07:32,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:07:32,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 00:07:32,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:32,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 00:07:32,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-12 00:07:32,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2024-10-12 00:07:32,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 106 transitions, 704 flow. Second operand has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 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) [2024-10-12 00:07:32,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:32,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2024-10-12 00:07:32,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:36,849 INFO L124 PetriNetUnfolderBase]: 19622/30364 cut-off events. [2024-10-12 00:07:36,849 INFO L125 PetriNetUnfolderBase]: For 83102/84289 co-relation queries the response was YES. [2024-10-12 00:07:37,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124758 conditions, 30364 events. 19622/30364 cut-off events. For 83102/84289 co-relation queries the response was YES. Maximal size of possible extension queue 1467. Compared 240451 event pairs, 16097 based on Foata normal form. 413/24641 useless extension candidates. Maximal degree in co-relation 124693. Up to 27479 conditions per place. [2024-10-12 00:07:37,234 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 70 selfloop transitions, 18 changer transitions 0/108 dead transitions. [2024-10-12 00:07:37,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 108 transitions, 900 flow [2024-10-12 00:07:37,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 00:07:37,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-12 00:07:37,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 318 transitions. [2024-10-12 00:07:37,236 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34945054945054943 [2024-10-12 00:07:37,236 INFO L175 Difference]: Start difference. First operand has 121 places, 106 transitions, 704 flow. Second operand 14 states and 318 transitions. [2024-10-12 00:07:37,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 108 transitions, 900 flow [2024-10-12 00:07:37,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 108 transitions, 856 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-10-12 00:07:37,549 INFO L231 Difference]: Finished difference. Result has 125 places, 108 transitions, 716 flow [2024-10-12 00:07:37,549 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=716, PETRI_PLACES=125, PETRI_TRANSITIONS=108} [2024-10-12 00:07:37,550 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 59 predicate places. [2024-10-12 00:07:37,550 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 108 transitions, 716 flow [2024-10-12 00:07:37,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 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) [2024-10-12 00:07:37,551 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:37,551 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:07:37,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-12 00:07:37,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:07:37,752 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-12 00:07:37,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:37,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1937866455, now seen corresponding path program 1 times [2024-10-12 00:07:37,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:37,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596483110] [2024-10-12 00:07:37,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:37,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:37,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:07:37,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:37,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596483110] [2024-10-12 00:07:37,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596483110] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:07:37,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641602831] [2024-10-12 00:07:37,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:37,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:07:37,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:07:37,917 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:07:37,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 00:07:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:38,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 00:07:38,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:07:38,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:07:38,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:07:38,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:07:38,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641602831] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:07:38,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:07:38,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2024-10-12 00:07:38,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136956337] [2024-10-12 00:07:38,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:07:38,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-12 00:07:38,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:38,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-12 00:07:38,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2024-10-12 00:07:38,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 65 [2024-10-12 00:07:38,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 108 transitions, 716 flow. Second operand has 20 states, 20 states have (on average 18.6) internal successors, (372), 20 states have internal predecessors, (372), 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) [2024-10-12 00:07:38,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:38,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 65 [2024-10-12 00:07:38,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand