./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 73c55a951ef2b92a665c2c32d76e33a5a03bdbde67ee3c8e6748faf493088c7e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:25:16,102 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:25:16,158 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:25:16,161 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:25:16,162 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:25:16,185 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:25:16,186 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:25:16,186 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:25:16,187 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:25:16,188 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:25:16,188 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:25:16,189 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:25:16,189 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:25:16,190 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:25:16,190 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:25:16,191 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:25:16,191 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:25:16,191 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:25:16,191 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:25:16,194 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:25:16,194 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:25:16,194 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:25:16,194 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:25:16,195 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:25:16,195 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:25:16,195 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:25:16,195 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:25:16,195 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:25:16,196 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:25:16,196 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:25:16,196 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:25:16,196 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:25:16,196 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:25:16,196 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:25:16,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:25:16,197 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:25:16,197 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:25:16,197 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:25:16,197 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:25:16,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:25:16,197 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:25:16,198 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:25:16,199 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:25:16,199 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:25:16,199 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73c55a951ef2b92a665c2c32d76e33a5a03bdbde67ee3c8e6748faf493088c7e [2024-11-10 22:25:16,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:25:16,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:25:16,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:25:16,398 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:25:16,398 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:25:16,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2024-11-10 22:25:17,605 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:25:17,767 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:25:17,767 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2024-11-10 22:25:17,778 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/350d48e66/dfa6ee1d85f84404af8ed44657079b45/FLAG3d47ecb2b [2024-11-10 22:25:17,792 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/350d48e66/dfa6ee1d85f84404af8ed44657079b45 [2024-11-10 22:25:17,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:25:17,796 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:25:17,798 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:25:17,798 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:25:17,803 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:25:17,805 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:25:17" (1/1) ... [2024-11-10 22:25:17,805 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b209c4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:17, skipping insertion in model container [2024-11-10 22:25:17,806 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:25:17" (1/1) ... [2024-11-10 22:25:17,828 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:25:17,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:25:18,006 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:25:18,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:25:18,053 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:25:18,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:18 WrapperNode [2024-11-10 22:25:18,056 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:25:18,072 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:25:18,073 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:25:18,073 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:25:18,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:18" (1/1) ... [2024-11-10 22:25:18,087 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:18" (1/1) ... [2024-11-10 22:25:18,122 INFO L138 Inliner]: procedures = 24, calls = 54, calls flagged for inlining = 21, calls inlined = 25, statements flattened = 355 [2024-11-10 22:25:18,122 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:25:18,123 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:25:18,123 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:25:18,123 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:25:18,131 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:18" (1/1) ... [2024-11-10 22:25:18,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:18" (1/1) ... [2024-11-10 22:25:18,134 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:18" (1/1) ... [2024-11-10 22:25:18,147 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-10 22:25:18,147 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:18" (1/1) ... [2024-11-10 22:25:18,147 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:18" (1/1) ... [2024-11-10 22:25:18,156 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:18" (1/1) ... [2024-11-10 22:25:18,156 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:18" (1/1) ... [2024-11-10 22:25:18,157 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:18" (1/1) ... [2024-11-10 22:25:18,158 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:18" (1/1) ... [2024-11-10 22:25:18,161 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:25:18,161 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:25:18,162 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:25:18,162 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:25:18,162 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:18" (1/1) ... [2024-11-10 22:25:18,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:25:18,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:18,191 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 22:25:18,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 22:25:18,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:25:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:25:18,224 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:25:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:25:18,224 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:25:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 22:25:18,224 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 22:25:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:25:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:25:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:25:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:25:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 22:25:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 22:25:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:25:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:25:18,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:25:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:25:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:25:18,227 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:25:18,319 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:25:18,320 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:25:18,701 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:25:18,702 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:25:19,014 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:25:19,015 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:25:19,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:25:19 BoogieIcfgContainer [2024-11-10 22:25:19,016 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:25:19,018 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:25:19,018 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:25:19,020 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:25:19,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:25:17" (1/3) ... [2024-11-10 22:25:19,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c52cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:25:19, skipping insertion in model container [2024-11-10 22:25:19,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:18" (2/3) ... [2024-11-10 22:25:19,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c52cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:25:19, skipping insertion in model container [2024-11-10 22:25:19,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:25:19" (3/3) ... [2024-11-10 22:25:19,023 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2024-11-10 22:25:19,036 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:25:19,036 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-11-10 22:25:19,037 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:25:19,110 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 22:25:19,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 83 transitions, 187 flow [2024-11-10 22:25:19,203 INFO L124 PetriNetUnfolderBase]: 12/80 cut-off events. [2024-11-10 22:25:19,204 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 22:25:19,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 80 events. 12/80 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 213 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2024-11-10 22:25:19,208 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 83 transitions, 187 flow [2024-11-10 22:25:19,210 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 78 transitions, 171 flow [2024-11-10 22:25:19,217 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:25:19,223 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;@71814d6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:25:19,223 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-11-10 22:25:19,226 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:25:19,226 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-10 22:25:19,226 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:25:19,227 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:19,227 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 22:25:19,227 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:19,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:19,231 INFO L85 PathProgramCache]: Analyzing trace with hash 29681629, now seen corresponding path program 1 times [2024-11-10 22:25:19,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:19,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754216387] [2024-11-10 22:25:19,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:19,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:19,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:19,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:19,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754216387] [2024-11-10 22:25:19,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754216387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:19,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:19,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:25:19,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194315447] [2024-11-10 22:25:19,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:19,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:25:19,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:19,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:25:19,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:25:19,601 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 83 [2024-11-10 22:25:19,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:19,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:19,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 83 [2024-11-10 22:25:19,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:20,421 INFO L124 PetriNetUnfolderBase]: 5880/8373 cut-off events. [2024-11-10 22:25:20,421 INFO L125 PetriNetUnfolderBase]: For 356/356 co-relation queries the response was YES. [2024-11-10 22:25:20,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17068 conditions, 8373 events. 5880/8373 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 43350 event pairs, 5179 based on Foata normal form. 9/5924 useless extension candidates. Maximal degree in co-relation 16379. Up to 8331 conditions per place. [2024-11-10 22:25:20,457 INFO L140 encePairwiseOnDemand]: 53/83 looper letters, 51 selfloop transitions, 10 changer transitions 0/73 dead transitions. [2024-11-10 22:25:20,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 73 transitions, 283 flow [2024-11-10 22:25:20,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:25:20,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:25:20,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2024-11-10 22:25:20,467 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43373493975903615 [2024-11-10 22:25:20,468 INFO L175 Difference]: Start difference. First operand has 76 places, 78 transitions, 171 flow. Second operand 4 states and 144 transitions. [2024-11-10 22:25:20,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 73 transitions, 283 flow [2024-11-10 22:25:20,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 73 transitions, 274 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:25:20,477 INFO L231 Difference]: Finished difference. Result has 69 places, 73 transitions, 222 flow [2024-11-10 22:25:20,478 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=69, PETRI_TRANSITIONS=73} [2024-11-10 22:25:20,481 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -7 predicate places. [2024-11-10 22:25:20,481 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 73 transitions, 222 flow [2024-11-10 22:25:20,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:20,481 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:20,481 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 22:25:20,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:25:20,482 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:20,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:20,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1153085375, now seen corresponding path program 1 times [2024-11-10 22:25:20,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:20,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315606900] [2024-11-10 22:25:20,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:20,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:20,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:20,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:20,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315606900] [2024-11-10 22:25:20,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315606900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:20,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489601899] [2024-11-10 22:25:20,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:20,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:20,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:20,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:20,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:25:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:20,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:25:20,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:20,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:20,738 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:25:20,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489601899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:20,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:25:20,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:25:20,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308334926] [2024-11-10 22:25:20,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:20,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:25:20,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:20,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:25:20,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:25:20,766 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 83 [2024-11-10 22:25:20,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 73 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:20,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:20,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 83 [2024-11-10 22:25:20,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:21,536 INFO L124 PetriNetUnfolderBase]: 5880/8370 cut-off events. [2024-11-10 22:25:21,536 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2024-11-10 22:25:21,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16990 conditions, 8370 events. 5880/8370 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 43321 event pairs, 5179 based on Foata normal form. 3/5915 useless extension candidates. Maximal degree in co-relation 16911. Up to 8316 conditions per place. [2024-11-10 22:25:21,588 INFO L140 encePairwiseOnDemand]: 70/83 looper letters, 41 selfloop transitions, 17 changer transitions 0/70 dead transitions. [2024-11-10 22:25:21,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 326 flow [2024-11-10 22:25:21,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:25:21,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:25:21,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-11-10 22:25:21,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3032128514056225 [2024-11-10 22:25:21,592 INFO L175 Difference]: Start difference. First operand has 69 places, 73 transitions, 222 flow. Second operand 6 states and 151 transitions. [2024-11-10 22:25:21,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 326 flow [2024-11-10 22:25:21,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 326 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:25:21,595 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 244 flow [2024-11-10 22:25:21,596 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2024-11-10 22:25:21,597 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -5 predicate places. [2024-11-10 22:25:21,598 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 244 flow [2024-11-10 22:25:21,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:21,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:21,599 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-10 22:25:21,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:21,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:21,804 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:21,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:21,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1385909122, now seen corresponding path program 1 times [2024-11-10 22:25:21,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:21,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923355054] [2024-11-10 22:25:21,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:21,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:21,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:21,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:21,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923355054] [2024-11-10 22:25:21,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923355054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:21,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159203238] [2024-11-10 22:25:21,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:21,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:21,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:21,897 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:21,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:25:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:21,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:25:21,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:22,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:22,002 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:22,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:22,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159203238] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:22,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:22,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:25:22,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627888523] [2024-11-10 22:25:22,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:22,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:25:22,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:22,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:25:22,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:25:22,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 83 [2024-11-10 22:25:22,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 244 flow. Second operand has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:22,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:22,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 83 [2024-11-10 22:25:22,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:22,790 INFO L124 PetriNetUnfolderBase]: 5889/8424 cut-off events. [2024-11-10 22:25:22,790 INFO L125 PetriNetUnfolderBase]: For 261/261 co-relation queries the response was YES. [2024-11-10 22:25:22,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17149 conditions, 8424 events. 5889/8424 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 43948 event pairs, 5179 based on Foata normal form. 9/5978 useless extension candidates. Maximal degree in co-relation 16913. Up to 8331 conditions per place. [2024-11-10 22:25:22,824 INFO L140 encePairwiseOnDemand]: 70/83 looper letters, 48 selfloop transitions, 37 changer transitions 0/97 dead transitions. [2024-11-10 22:25:22,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 97 transitions, 588 flow [2024-11-10 22:25:22,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:25:22,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:25:22,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 244 transitions. [2024-11-10 22:25:22,826 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29397590361445786 [2024-11-10 22:25:22,826 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 244 flow. Second operand 10 states and 244 transitions. [2024-11-10 22:25:22,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 97 transitions, 588 flow [2024-11-10 22:25:22,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 97 transitions, 505 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-10 22:25:22,832 INFO L231 Difference]: Finished difference. Result has 78 places, 97 transitions, 459 flow [2024-11-10 22:25:22,832 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=459, PETRI_PLACES=78, PETRI_TRANSITIONS=97} [2024-11-10 22:25:22,833 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2024-11-10 22:25:22,833 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 97 transitions, 459 flow [2024-11-10 22:25:22,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:22,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:22,834 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:22,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 22:25:23,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-10 22:25:23,038 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:23,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:23,038 INFO L85 PathProgramCache]: Analyzing trace with hash 2090899079, now seen corresponding path program 1 times [2024-11-10 22:25:23,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:23,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650862848] [2024-11-10 22:25:23,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:23,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:23,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:23,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:23,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650862848] [2024-11-10 22:25:23,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650862848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:23,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:23,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:25:23,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816660260] [2024-11-10 22:25:23,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:23,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:23,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:23,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:23,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:25:23,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 83 [2024-11-10 22:25:23,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 97 transitions, 459 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:23,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:23,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 83 [2024-11-10 22:25:23,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:23,866 INFO L124 PetriNetUnfolderBase]: 7159/10252 cut-off events. [2024-11-10 22:25:23,866 INFO L125 PetriNetUnfolderBase]: For 356/356 co-relation queries the response was YES. [2024-11-10 22:25:23,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20874 conditions, 10252 events. 7159/10252 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 55002 event pairs, 2362 based on Foata normal form. 114/7415 useless extension candidates. Maximal degree in co-relation 20770. Up to 8328 conditions per place. [2024-11-10 22:25:23,909 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 102 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2024-11-10 22:25:23,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 120 transitions, 719 flow [2024-11-10 22:25:23,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:23,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:23,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-11-10 22:25:23,911 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5381526104417671 [2024-11-10 22:25:23,911 INFO L175 Difference]: Start difference. First operand has 78 places, 97 transitions, 459 flow. Second operand 3 states and 134 transitions. [2024-11-10 22:25:23,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 120 transitions, 719 flow [2024-11-10 22:25:23,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 120 transitions, 682 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-10 22:25:23,915 INFO L231 Difference]: Finished difference. Result has 79 places, 99 transitions, 443 flow [2024-11-10 22:25:23,915 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=443, PETRI_PLACES=79, PETRI_TRANSITIONS=99} [2024-11-10 22:25:23,915 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2024-11-10 22:25:23,916 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 99 transitions, 443 flow [2024-11-10 22:25:23,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:23,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:23,916 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:23,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:25:23,916 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:23,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:23,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1396742132, now seen corresponding path program 1 times [2024-11-10 22:25:23,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:23,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758246696] [2024-11-10 22:25:23,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:23,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:23,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:23,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:23,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758246696] [2024-11-10 22:25:23,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758246696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:23,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:23,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:25:23,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799499648] [2024-11-10 22:25:23,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:23,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:23,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:23,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:23,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:25:23,989 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 83 [2024-11-10 22:25:23,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 99 transitions, 443 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:23,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:23,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 83 [2024-11-10 22:25:23,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:24,652 INFO L124 PetriNetUnfolderBase]: 6818/9802 cut-off events. [2024-11-10 22:25:24,653 INFO L125 PetriNetUnfolderBase]: For 601/601 co-relation queries the response was YES. [2024-11-10 22:25:24,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20790 conditions, 9802 events. 6818/9802 cut-off events. For 601/601 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 49269 event pairs, 2901 based on Foata normal form. 212/7678 useless extension candidates. Maximal degree in co-relation 20689. Up to 6361 conditions per place. [2024-11-10 22:25:24,687 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 104 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2024-11-10 22:25:24,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 121 transitions, 704 flow [2024-11-10 22:25:24,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:24,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:24,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-11-10 22:25:24,688 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5381526104417671 [2024-11-10 22:25:24,688 INFO L175 Difference]: Start difference. First operand has 79 places, 99 transitions, 443 flow. Second operand 3 states and 134 transitions. [2024-11-10 22:25:24,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 121 transitions, 704 flow [2024-11-10 22:25:24,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 121 transitions, 702 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:24,692 INFO L231 Difference]: Finished difference. Result has 81 places, 99 transitions, 450 flow [2024-11-10 22:25:24,692 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=450, PETRI_PLACES=81, PETRI_TRANSITIONS=99} [2024-11-10 22:25:24,694 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 5 predicate places. [2024-11-10 22:25:24,695 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 99 transitions, 450 flow [2024-11-10 22:25:24,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:24,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:24,695 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:24,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:25:24,695 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:24,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:24,695 INFO L85 PathProgramCache]: Analyzing trace with hash 935590737, now seen corresponding path program 1 times [2024-11-10 22:25:24,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:24,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064507668] [2024-11-10 22:25:24,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:24,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:24,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:24,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064507668] [2024-11-10 22:25:24,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064507668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:24,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:24,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:25:24,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227683013] [2024-11-10 22:25:24,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:24,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:25:24,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:24,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:25:24,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:25:24,791 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 83 [2024-11-10 22:25:24,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 99 transitions, 450 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:24,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:24,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 83 [2024-11-10 22:25:24,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:25,469 INFO L124 PetriNetUnfolderBase]: 7435/10825 cut-off events. [2024-11-10 22:25:25,470 INFO L125 PetriNetUnfolderBase]: For 916/916 co-relation queries the response was YES. [2024-11-10 22:25:25,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23592 conditions, 10825 events. 7435/10825 cut-off events. For 916/916 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 56152 event pairs, 6755 based on Foata normal form. 112/8642 useless extension candidates. Maximal degree in co-relation 23424. Up to 9753 conditions per place. [2024-11-10 22:25:25,509 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 106 selfloop transitions, 9 changer transitions 27/154 dead transitions. [2024-11-10 22:25:25,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 154 transitions, 979 flow [2024-11-10 22:25:25,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:25:25,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:25:25,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2024-11-10 22:25:25,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43614457831325304 [2024-11-10 22:25:25,511 INFO L175 Difference]: Start difference. First operand has 81 places, 99 transitions, 450 flow. Second operand 5 states and 181 transitions. [2024-11-10 22:25:25,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 154 transitions, 979 flow [2024-11-10 22:25:25,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 154 transitions, 977 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:25,514 INFO L231 Difference]: Finished difference. Result has 87 places, 106 transitions, 542 flow [2024-11-10 22:25:25,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=542, PETRI_PLACES=87, PETRI_TRANSITIONS=106} [2024-11-10 22:25:25,515 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 11 predicate places. [2024-11-10 22:25:25,515 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 106 transitions, 542 flow [2024-11-10 22:25:25,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:25,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:25,515 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-10 22:25:25,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:25:25,516 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:25,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:25,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2012393116, now seen corresponding path program 2 times [2024-11-10 22:25:25,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:25,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575458018] [2024-11-10 22:25:25,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:25,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:25,639 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:25,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:25,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575458018] [2024-11-10 22:25:25,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575458018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:25,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286196788] [2024-11-10 22:25:25,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:25:25,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:25,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:25,641 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:25,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:25:25,711 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:25:25,712 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:25,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:25:25,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:25,759 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:25:25,760 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:25,786 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:25:25,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286196788] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:25,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:25,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-10 22:25:25,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549020784] [2024-11-10 22:25:25,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:25,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 22:25:25,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:25,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 22:25:25,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:25:25,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 83 [2024-11-10 22:25:25,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 106 transitions, 542 flow. Second operand has 14 states, 14 states have (on average 13.142857142857142) internal successors, (184), 14 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:25,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:25,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 83 [2024-11-10 22:25:25,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:26,649 INFO L124 PetriNetUnfolderBase]: 7439/10849 cut-off events. [2024-11-10 22:25:26,650 INFO L125 PetriNetUnfolderBase]: For 1427/1427 co-relation queries the response was YES. [2024-11-10 22:25:26,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24026 conditions, 10849 events. 7439/10849 cut-off events. For 1427/1427 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 57603 event pairs, 6755 based on Foata normal form. 10/8552 useless extension candidates. Maximal degree in co-relation 23789. Up to 10655 conditions per place. [2024-11-10 22:25:26,688 INFO L140 encePairwiseOnDemand]: 70/83 looper letters, 56 selfloop transitions, 53 changer transitions 9/127 dead transitions. [2024-11-10 22:25:26,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 127 transitions, 855 flow [2024-11-10 22:25:26,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 22:25:26,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 22:25:26,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 283 transitions. [2024-11-10 22:25:26,690 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.24354561101549052 [2024-11-10 22:25:26,690 INFO L175 Difference]: Start difference. First operand has 87 places, 106 transitions, 542 flow. Second operand 14 states and 283 transitions. [2024-11-10 22:25:26,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 127 transitions, 855 flow [2024-11-10 22:25:26,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 127 transitions, 815 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-10 22:25:26,695 INFO L231 Difference]: Finished difference. Result has 92 places, 104 transitions, 569 flow [2024-11-10 22:25:26,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=569, PETRI_PLACES=92, PETRI_TRANSITIONS=104} [2024-11-10 22:25:26,696 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 16 predicate places. [2024-11-10 22:25:26,696 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 104 transitions, 569 flow [2024-11-10 22:25:26,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.142857142857142) internal successors, (184), 14 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:26,696 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:26,696 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:26,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:25:26,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:26,901 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:26,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:26,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1838337233, now seen corresponding path program 1 times [2024-11-10 22:25:26,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:26,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464723895] [2024-11-10 22:25:26,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:26,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:27,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:27,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464723895] [2024-11-10 22:25:27,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464723895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:27,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165386531] [2024-11-10 22:25:27,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:27,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:27,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:27,013 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:27,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:25:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:27,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:25:27,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:27,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:25:27,121 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:25:27,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165386531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:27,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:25:27,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-10 22:25:27,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754012295] [2024-11-10 22:25:27,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:27,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:27,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:27,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:27,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 22:25:27,122 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 83 [2024-11-10 22:25:27,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 104 transitions, 569 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:27,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:27,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 83 [2024-11-10 22:25:27,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:27,623 INFO L124 PetriNetUnfolderBase]: 4797/6955 cut-off events. [2024-11-10 22:25:27,623 INFO L125 PetriNetUnfolderBase]: For 1071/1071 co-relation queries the response was YES. [2024-11-10 22:25:27,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15239 conditions, 6955 events. 4797/6955 cut-off events. For 1071/1071 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 34337 event pairs, 4276 based on Foata normal form. 448/6025 useless extension candidates. Maximal degree in co-relation 15120. Up to 6889 conditions per place. [2024-11-10 22:25:27,649 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 87 selfloop transitions, 1 changer transitions 0/100 dead transitions. [2024-11-10 22:25:27,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 100 transitions, 733 flow [2024-11-10 22:25:27,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:27,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:27,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-11-10 22:25:27,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43775100401606426 [2024-11-10 22:25:27,651 INFO L175 Difference]: Start difference. First operand has 92 places, 104 transitions, 569 flow. Second operand 3 states and 109 transitions. [2024-11-10 22:25:27,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 100 transitions, 733 flow [2024-11-10 22:25:27,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 100 transitions, 524 flow, removed 23 selfloop flow, removed 14 redundant places. [2024-11-10 22:25:27,656 INFO L231 Difference]: Finished difference. Result has 74 places, 100 transitions, 350 flow [2024-11-10 22:25:27,656 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=350, PETRI_PLACES=74, PETRI_TRANSITIONS=100} [2024-11-10 22:25:27,656 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -2 predicate places. [2024-11-10 22:25:27,656 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 100 transitions, 350 flow [2024-11-10 22:25:27,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:27,657 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:27,657 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:27,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 22:25:27,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:27,858 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:27,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:27,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1153878350, now seen corresponding path program 1 times [2024-11-10 22:25:27,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:27,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28397751] [2024-11-10 22:25:27,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:27,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:27,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:25:27,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:27,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28397751] [2024-11-10 22:25:27,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28397751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:27,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:27,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:25:27,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326467476] [2024-11-10 22:25:27,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:27,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:27,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:27,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:27,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:25:27,910 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 83 [2024-11-10 22:25:27,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 100 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:27,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:27,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 83 [2024-11-10 22:25:27,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:28,368 INFO L124 PetriNetUnfolderBase]: 3767/5517 cut-off events. [2024-11-10 22:25:28,369 INFO L125 PetriNetUnfolderBase]: For 579/579 co-relation queries the response was YES. [2024-11-10 22:25:28,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12027 conditions, 5517 events. 3767/5517 cut-off events. For 579/579 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 25618 event pairs, 1727 based on Foata normal form. 124/4537 useless extension candidates. Maximal degree in co-relation 12013. Up to 4119 conditions per place. [2024-11-10 22:25:28,387 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 103 selfloop transitions, 2 changer transitions 6/123 dead transitions. [2024-11-10 22:25:28,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 123 transitions, 628 flow [2024-11-10 22:25:28,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:28,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:28,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2024-11-10 22:25:28,388 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5301204819277109 [2024-11-10 22:25:28,388 INFO L175 Difference]: Start difference. First operand has 74 places, 100 transitions, 350 flow. Second operand 3 states and 132 transitions. [2024-11-10 22:25:28,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 123 transitions, 628 flow [2024-11-10 22:25:28,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 123 transitions, 627 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:28,391 INFO L231 Difference]: Finished difference. Result has 76 places, 101 transitions, 363 flow [2024-11-10 22:25:28,391 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=363, PETRI_PLACES=76, PETRI_TRANSITIONS=101} [2024-11-10 22:25:28,392 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 0 predicate places. [2024-11-10 22:25:28,392 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 101 transitions, 363 flow [2024-11-10 22:25:28,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:28,392 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:28,392 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:28,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 22:25:28,392 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:28,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:28,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1559411235, now seen corresponding path program 1 times [2024-11-10 22:25:28,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:28,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417189984] [2024-11-10 22:25:28,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:28,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:28,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:25:28,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:28,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417189984] [2024-11-10 22:25:28,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417189984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:28,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:28,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:25:28,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010370797] [2024-11-10 22:25:28,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:28,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:25:28,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:28,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:25:28,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:25:28,513 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 83 [2024-11-10 22:25:28,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 101 transitions, 363 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:28,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:28,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 83 [2024-11-10 22:25:28,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:28,932 INFO L124 PetriNetUnfolderBase]: 4502/6672 cut-off events. [2024-11-10 22:25:28,932 INFO L125 PetriNetUnfolderBase]: For 748/748 co-relation queries the response was YES. [2024-11-10 22:25:28,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14947 conditions, 6672 events. 4502/6672 cut-off events. For 748/748 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 32533 event pairs, 4052 based on Foata normal form. 20/5510 useless extension candidates. Maximal degree in co-relation 14931. Up to 5419 conditions per place. [2024-11-10 22:25:28,950 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 83 selfloop transitions, 8 changer transitions 24/124 dead transitions. [2024-11-10 22:25:28,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 124 transitions, 649 flow [2024-11-10 22:25:28,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:25:28,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:25:28,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 163 transitions. [2024-11-10 22:25:28,951 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3927710843373494 [2024-11-10 22:25:28,951 INFO L175 Difference]: Start difference. First operand has 76 places, 101 transitions, 363 flow. Second operand 5 states and 163 transitions. [2024-11-10 22:25:28,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 124 transitions, 649 flow [2024-11-10 22:25:28,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 124 transitions, 647 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:28,954 INFO L231 Difference]: Finished difference. Result has 81 places, 100 transitions, 393 flow [2024-11-10 22:25:28,955 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=393, PETRI_PLACES=81, PETRI_TRANSITIONS=100} [2024-11-10 22:25:28,955 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 5 predicate places. [2024-11-10 22:25:28,955 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 100 transitions, 393 flow [2024-11-10 22:25:28,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:28,955 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:28,956 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:28,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 22:25:28,956 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:28,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:28,956 INFO L85 PathProgramCache]: Analyzing trace with hash -946864883, now seen corresponding path program 1 times [2024-11-10 22:25:28,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:28,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108491585] [2024-11-10 22:25:28,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:28,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:29,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:25:29,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:29,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108491585] [2024-11-10 22:25:29,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108491585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:29,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128686181] [2024-11-10 22:25:29,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:29,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:29,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:29,106 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:29,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:25:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:29,193 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:25:29,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:29,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:25:29,221 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:25:29,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128686181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:29,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:25:29,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-10 22:25:29,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495963662] [2024-11-10 22:25:29,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:29,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:29,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:29,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:29,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 22:25:29,222 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 83 [2024-11-10 22:25:29,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 100 transitions, 393 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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) [2024-11-10 22:25:29,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:29,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 83 [2024-11-10 22:25:29,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:29,467 INFO L124 PetriNetUnfolderBase]: 3135/4623 cut-off events. [2024-11-10 22:25:29,467 INFO L125 PetriNetUnfolderBase]: For 766/766 co-relation queries the response was YES. [2024-11-10 22:25:29,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10410 conditions, 4623 events. 3135/4623 cut-off events. For 766/766 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 21080 event pairs, 2748 based on Foata normal form. 108/4008 useless extension candidates. Maximal degree in co-relation 10391. Up to 4558 conditions per place. [2024-11-10 22:25:29,479 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 85 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2024-11-10 22:25:29,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 98 transitions, 557 flow [2024-11-10 22:25:29,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:29,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:29,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-10 22:25:29,481 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42168674698795183 [2024-11-10 22:25:29,481 INFO L175 Difference]: Start difference. First operand has 81 places, 100 transitions, 393 flow. Second operand 3 states and 105 transitions. [2024-11-10 22:25:29,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 98 transitions, 557 flow [2024-11-10 22:25:29,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 98 transitions, 539 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-10 22:25:29,483 INFO L231 Difference]: Finished difference. Result has 77 places, 98 transitions, 369 flow [2024-11-10 22:25:29,483 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=369, PETRI_PLACES=77, PETRI_TRANSITIONS=98} [2024-11-10 22:25:29,483 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 1 predicate places. [2024-11-10 22:25:29,484 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 98 transitions, 369 flow [2024-11-10 22:25:29,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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) [2024-11-10 22:25:29,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:29,484 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:29,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 22:25:29,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-10 22:25:29,685 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:29,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:29,685 INFO L85 PathProgramCache]: Analyzing trace with hash 595946128, now seen corresponding path program 1 times [2024-11-10 22:25:29,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:29,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168353137] [2024-11-10 22:25:29,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:29,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:29,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:25:29,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:29,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168353137] [2024-11-10 22:25:29,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168353137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:29,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:29,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:25:29,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465425912] [2024-11-10 22:25:29,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:29,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:25:29,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:29,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:25:29,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:25:29,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 83 [2024-11-10 22:25:29,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 98 transitions, 369 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:29,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:29,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 83 [2024-11-10 22:25:29,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:30,119 INFO L124 PetriNetUnfolderBase]: 3913/5878 cut-off events. [2024-11-10 22:25:30,119 INFO L125 PetriNetUnfolderBase]: For 694/694 co-relation queries the response was YES. [2024-11-10 22:25:30,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13051 conditions, 5878 events. 3913/5878 cut-off events. For 694/694 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 28278 event pairs, 3518 based on Foata normal form. 28/4973 useless extension candidates. Maximal degree in co-relation 13033. Up to 4549 conditions per place. [2024-11-10 22:25:30,133 INFO L140 encePairwiseOnDemand]: 75/83 looper letters, 80 selfloop transitions, 8 changer transitions 46/143 dead transitions. [2024-11-10 22:25:30,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 143 transitions, 777 flow [2024-11-10 22:25:30,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:25:30,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:25:30,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-11-10 22:25:30,135 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41686746987951806 [2024-11-10 22:25:30,135 INFO L175 Difference]: Start difference. First operand has 77 places, 98 transitions, 369 flow. Second operand 5 states and 173 transitions. [2024-11-10 22:25:30,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 143 transitions, 777 flow [2024-11-10 22:25:30,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 143 transitions, 776 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:30,137 INFO L231 Difference]: Finished difference. Result has 83 places, 97 transitions, 400 flow [2024-11-10 22:25:30,137 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=400, PETRI_PLACES=83, PETRI_TRANSITIONS=97} [2024-11-10 22:25:30,138 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 7 predicate places. [2024-11-10 22:25:30,138 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 97 transitions, 400 flow [2024-11-10 22:25:30,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:30,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:30,138 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:30,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 22:25:30,138 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:30,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:30,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1694530962, now seen corresponding path program 1 times [2024-11-10 22:25:30,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:30,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056222863] [2024-11-10 22:25:30,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:30,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:25:30,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:30,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056222863] [2024-11-10 22:25:30,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056222863] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:30,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511114862] [2024-11-10 22:25:30,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:30,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:30,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:30,255 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:30,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:25:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:30,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 22:25:30,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:30,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:25:30,438 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:30,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:25:30,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511114862] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:30,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:30,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-11-10 22:25:30,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626825265] [2024-11-10 22:25:30,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:30,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 22:25:30,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:30,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 22:25:30,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-10 22:25:30,640 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 83 [2024-11-10 22:25:30,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 97 transitions, 400 flow. Second operand has 15 states, 15 states have (on average 16.066666666666666) internal successors, (241), 15 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) [2024-11-10 22:25:30,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:30,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 83 [2024-11-10 22:25:30,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:31,604 INFO L124 PetriNetUnfolderBase]: 5614/8649 cut-off events. [2024-11-10 22:25:31,604 INFO L125 PetriNetUnfolderBase]: For 1135/1135 co-relation queries the response was YES. [2024-11-10 22:25:31,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19124 conditions, 8649 events. 5614/8649 cut-off events. For 1135/1135 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 46406 event pairs, 3464 based on Foata normal form. 176/7445 useless extension candidates. Maximal degree in co-relation 19102. Up to 3558 conditions per place. [2024-11-10 22:25:31,623 INFO L140 encePairwiseOnDemand]: 65/83 looper letters, 54 selfloop transitions, 41 changer transitions 203/307 dead transitions. [2024-11-10 22:25:31,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 307 transitions, 1645 flow [2024-11-10 22:25:31,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-10 22:25:31,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-10 22:25:31,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 532 transitions. [2024-11-10 22:25:31,625 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.24652455977757182 [2024-11-10 22:25:31,625 INFO L175 Difference]: Start difference. First operand has 83 places, 97 transitions, 400 flow. Second operand 26 states and 532 transitions. [2024-11-10 22:25:31,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 307 transitions, 1645 flow [2024-11-10 22:25:31,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 307 transitions, 1589 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-11-10 22:25:31,630 INFO L231 Difference]: Finished difference. Result has 110 places, 95 transitions, 460 flow [2024-11-10 22:25:31,631 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=460, PETRI_PLACES=110, PETRI_TRANSITIONS=95} [2024-11-10 22:25:31,631 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 34 predicate places. [2024-11-10 22:25:31,631 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 95 transitions, 460 flow [2024-11-10 22:25:31,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 16.066666666666666) internal successors, (241), 15 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) [2024-11-10 22:25:31,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:31,632 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:31,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 22:25:31,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:31,833 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:31,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:31,833 INFO L85 PathProgramCache]: Analyzing trace with hash 320409078, now seen corresponding path program 2 times [2024-11-10 22:25:31,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:31,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456438950] [2024-11-10 22:25:31,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:31,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:31,994 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-10 22:25:31,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:31,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456438950] [2024-11-10 22:25:31,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456438950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:31,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270256360] [2024-11-10 22:25:31,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:25:31,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:31,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:31,997 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:31,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:25:32,097 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:25:32,097 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:32,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:25:32,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:32,161 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:25:32,161 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:25:32,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270256360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:32,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:25:32,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 10 [2024-11-10 22:25:32,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241856945] [2024-11-10 22:25:32,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:32,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:25:32,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:32,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:25:32,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-10 22:25:32,162 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 83 [2024-11-10 22:25:32,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 95 transitions, 460 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 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) [2024-11-10 22:25:32,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:32,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 83 [2024-11-10 22:25:32,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:32,770 INFO L124 PetriNetUnfolderBase]: 6684/9712 cut-off events. [2024-11-10 22:25:32,770 INFO L125 PetriNetUnfolderBase]: For 6071/6071 co-relation queries the response was YES. [2024-11-10 22:25:32,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24825 conditions, 9712 events. 6684/9712 cut-off events. For 6071/6071 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 46243 event pairs, 3481 based on Foata normal form. 180/8315 useless extension candidates. Maximal degree in co-relation 24798. Up to 3653 conditions per place. [2024-11-10 22:25:32,809 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 125 selfloop transitions, 8 changer transitions 0/145 dead transitions. [2024-11-10 22:25:32,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 145 transitions, 892 flow [2024-11-10 22:25:32,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:25:32,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:25:32,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 174 transitions. [2024-11-10 22:25:32,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5240963855421686 [2024-11-10 22:25:32,810 INFO L175 Difference]: Start difference. First operand has 110 places, 95 transitions, 460 flow. Second operand 4 states and 174 transitions. [2024-11-10 22:25:32,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 145 transitions, 892 flow [2024-11-10 22:25:32,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 145 transitions, 861 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-11-10 22:25:32,817 INFO L231 Difference]: Finished difference. Result has 94 places, 101 transitions, 508 flow [2024-11-10 22:25:32,817 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=508, PETRI_PLACES=94, PETRI_TRANSITIONS=101} [2024-11-10 22:25:32,818 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 18 predicate places. [2024-11-10 22:25:32,818 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 101 transitions, 508 flow [2024-11-10 22:25:32,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 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) [2024-11-10 22:25:32,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:32,818 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:32,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:33,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:33,023 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-10 22:25:33,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:33,023 INFO L85 PathProgramCache]: Analyzing trace with hash -706245712, now seen corresponding path program 1 times [2024-11-10 22:25:33,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:33,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059250833] [2024-11-10 22:25:33,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:33,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:33,180 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-10 22:25:33,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:33,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059250833] [2024-11-10 22:25:33,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059250833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:33,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62544647] [2024-11-10 22:25:33,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:33,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:33,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:33,182 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:33,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 22:25:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:33,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:25:33,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:33,317 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:25:33,318 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:25:33,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62544647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:33,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:25:33,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-10 22:25:33,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66305654] [2024-11-10 22:25:33,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:33,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:33,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:33,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:33,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-10 22:25:33,319 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 83 [2024-11-10 22:25:33,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 101 transitions, 508 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:33,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:33,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 83 [2024-11-10 22:25:33,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:33,787 INFO L124 PetriNetUnfolderBase]: 5265/7696 cut-off events. [2024-11-10 22:25:33,787 INFO L125 PetriNetUnfolderBase]: For 5895/5895 co-relation queries the response was YES. [2024-11-10 22:25:33,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20059 conditions, 7696 events. 5265/7696 cut-off events. For 5895/5895 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 35985 event pairs, 4517 based on Foata normal form. 252/6887 useless extension candidates. Maximal degree in co-relation 20035. Up to 7634 conditions per place. [2024-11-10 22:25:33,801 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 0 selfloop transitions, 0 changer transitions 99/99 dead transitions. [2024-11-10 22:25:33,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 99 transitions, 672 flow [2024-11-10 22:25:33,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:33,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:33,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-10 22:25:33,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41365461847389556 [2024-11-10 22:25:33,802 INFO L175 Difference]: Start difference. First operand has 94 places, 101 transitions, 508 flow. Second operand 3 states and 103 transitions. [2024-11-10 22:25:33,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 99 transitions, 672 flow [2024-11-10 22:25:33,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 99 transitions, 658 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:33,806 INFO L231 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2024-11-10 22:25:33,807 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2024-11-10 22:25:33,807 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 17 predicate places. [2024-11-10 22:25:33,807 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2024-11-10 22:25:33,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:33,809 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 41 remaining) [2024-11-10 22:25:33,810 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2024-11-10 22:25:33,810 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2024-11-10 22:25:33,810 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2024-11-10 22:25:33,810 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2024-11-10 22:25:33,810 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2024-11-10 22:25:33,810 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2024-11-10 22:25:33,810 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2024-11-10 22:25:33,810 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2024-11-10 22:25:33,810 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2024-11-10 22:25:33,810 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2024-11-10 22:25:33,810 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2024-11-10 22:25:33,810 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2024-11-10 22:25:33,810 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2024-11-10 22:25:33,810 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2024-11-10 22:25:33,810 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2024-11-10 22:25:33,810 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2024-11-10 22:25:33,810 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2024-11-10 22:25:33,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2024-11-10 22:25:33,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2024-11-10 22:25:33,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2024-11-10 22:25:33,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2024-11-10 22:25:33,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 41 remaining) [2024-11-10 22:25:33,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 41 remaining) [2024-11-10 22:25:33,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 41 remaining) [2024-11-10 22:25:33,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2024-11-10 22:25:33,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2024-11-10 22:25:33,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2024-11-10 22:25:33,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2024-11-10 22:25:33,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2024-11-10 22:25:33,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2024-11-10 22:25:33,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2024-11-10 22:25:33,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2024-11-10 22:25:33,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2024-11-10 22:25:33,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2024-11-10 22:25:33,812 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2024-11-10 22:25:33,812 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2024-11-10 22:25:33,812 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2024-11-10 22:25:33,812 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2024-11-10 22:25:33,812 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2024-11-10 22:25:33,812 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2024-11-10 22:25:33,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:34,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-10 22:25:34,013 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:34,017 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 22:25:34,017 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 22:25:34,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 10:25:34 BasicIcfg [2024-11-10 22:25:34,021 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 22:25:34,021 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 22:25:34,021 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 22:25:34,021 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 22:25:34,021 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:25:19" (3/4) ... [2024-11-10 22:25:34,023 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 22:25:34,025 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-10 22:25:34,025 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-10 22:25:34,025 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-10 22:25:34,031 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 142 nodes and edges [2024-11-10 22:25:34,032 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 63 nodes and edges [2024-11-10 22:25:34,032 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2024-11-10 22:25:34,032 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-10 22:25:34,105 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 22:25:34,106 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 22:25:34,106 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 22:25:34,106 INFO L158 Benchmark]: Toolchain (without parser) took 16310.01ms. Allocated memory was 167.8MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 94.0MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 314.1MB. Max. memory is 16.1GB. [2024-11-10 22:25:34,106 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 167.8MB. Free memory is still 119.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:25:34,107 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.22ms. Allocated memory is still 167.8MB. Free memory was 93.9MB in the beginning and 133.8MB in the end (delta: -39.9MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2024-11-10 22:25:34,107 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.93ms. Allocated memory is still 239.1MB. Free memory was 210.6MB in the beginning and 208.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 22:25:34,107 INFO L158 Benchmark]: Boogie Preprocessor took 38.10ms. Allocated memory is still 239.1MB. Free memory was 208.5MB in the beginning and 205.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 22:25:34,107 INFO L158 Benchmark]: IcfgBuilder took 854.24ms. Allocated memory is still 239.1MB. Free memory was 205.4MB in the beginning and 97.4MB in the end (delta: 108.0MB). Peak memory consumption was 109.1MB. Max. memory is 16.1GB. [2024-11-10 22:25:34,107 INFO L158 Benchmark]: TraceAbstraction took 15003.01ms. Allocated memory was 239.1MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 96.3MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-10 22:25:34,108 INFO L158 Benchmark]: Witness Printer took 84.71ms. Allocated memory is still 1.9GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-10 22:25:34,109 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 167.8MB. Free memory is still 119.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.22ms. Allocated memory is still 167.8MB. Free memory was 93.9MB in the beginning and 133.8MB in the end (delta: -39.9MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.93ms. Allocated memory is still 239.1MB. Free memory was 210.6MB in the beginning and 208.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.10ms. Allocated memory is still 239.1MB. Free memory was 208.5MB in the beginning and 205.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 854.24ms. Allocated memory is still 239.1MB. Free memory was 205.4MB in the beginning and 97.4MB in the end (delta: 108.0MB). Peak memory consumption was 109.1MB. Max. memory is 16.1GB. * TraceAbstraction took 15003.01ms. Allocated memory was 239.1MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 96.3MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 84.71ms. Allocated memory is still 1.9GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 114 locations, 41 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.9s, OverallIterations: 15, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 10.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1025 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 953 mSDsluCounter, 311 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 295 mSDsCounter, 257 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2581 IncrementalHoareTripleChecker+Invalid, 2838 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 257 mSolverCounterUnsat, 16 mSDtfsCounter, 2581 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 391 GetRequests, 271 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=569occurred in iteration=7, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 597 NumberOfCodeBlocks, 561 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 639 ConstructedInterpolants, 0 QuantifiedInterpolants, 2001 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1641 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 26 InterpolantComputations, 12 PerfectInterpolantSequences, 151/248 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-10 22:25:34,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE