./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-three-array-sum.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 c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:09:31,843 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:09:31,925 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:09:31,929 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:09:31,930 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:09:31,964 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:09:31,965 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:09:31,965 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:09:31,966 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:09:31,966 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:09:31,966 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:09:31,967 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:09:31,967 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:09:31,972 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:09:31,973 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:09:31,973 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:09:31,973 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:09:31,973 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:09:31,974 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:09:31,974 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:09:31,974 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:09:31,976 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:09:31,976 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:09:31,976 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:09:31,976 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:09:31,977 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:09:31,977 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:09:31,977 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:09:31,978 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:09:31,978 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:09:31,978 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:09:31,979 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:09:31,979 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:09:31,979 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:09:31,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:09:31,980 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:09:31,980 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:09:31,980 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:09:31,981 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:09:31,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:09:31,989 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:09:31,989 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:09:31,989 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:09:31,989 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:09:31,990 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e [2024-11-19 14:09:32,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:09:32,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:09:32,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:09:32,272 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:09:32,273 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:09:32,274 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2024-11-19 14:09:33,728 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:09:33,939 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:09:33,943 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2024-11-19 14:09:33,954 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b24065e83/e30397cdcf21446781c5d14fe25ce47b/FLAG9a8df5992 [2024-11-19 14:09:34,304 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b24065e83/e30397cdcf21446781c5d14fe25ce47b [2024-11-19 14:09:34,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:09:34,308 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:09:34,309 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:09:34,309 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:09:34,314 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:09:34,315 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:09:34" (1/1) ... [2024-11-19 14:09:34,316 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a97cdf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:34, skipping insertion in model container [2024-11-19 14:09:34,316 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:09:34" (1/1) ... [2024-11-19 14:09:34,342 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:09:34,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:09:34,547 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:09:34,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:09:34,600 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:09:34,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:34 WrapperNode [2024-11-19 14:09:34,601 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:09:34,602 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:09:34,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:09:34,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:09:34,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:34" (1/1) ... [2024-11-19 14:09:34,617 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:34" (1/1) ... [2024-11-19 14:09:34,647 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 146 [2024-11-19 14:09:34,648 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:09:34,648 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:09:34,649 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:09:34,649 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:09:34,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:34" (1/1) ... [2024-11-19 14:09:34,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:34" (1/1) ... [2024-11-19 14:09:34,663 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:34" (1/1) ... [2024-11-19 14:09:34,682 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-19 14:09:34,683 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:34" (1/1) ... [2024-11-19 14:09:34,683 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:34" (1/1) ... [2024-11-19 14:09:34,690 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:34" (1/1) ... [2024-11-19 14:09:34,695 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:34" (1/1) ... [2024-11-19 14:09:34,703 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:34" (1/1) ... [2024-11-19 14:09:34,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:34" (1/1) ... [2024-11-19 14:09:34,710 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:09:34,711 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:09:34,712 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:09:34,712 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:09:34,713 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:34" (1/1) ... [2024-11-19 14:09:34,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:09:34,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:34,747 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 14:09:34,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 14:09:34,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:09:34,806 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:09:34,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:09:34,806 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:09:34,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:09:34,806 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 14:09:34,807 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 14:09:34,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:09:34,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:09:34,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:09:34,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:09:34,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 14:09:34,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 14:09:34,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:09:34,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:09:34,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:09:34,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:09:34,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:09:34,812 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:09:34,921 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:09:34,923 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:09:35,305 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:09:35,305 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:09:35,588 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:09:35,588 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-19 14:09:35,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:09:35 BoogieIcfgContainer [2024-11-19 14:09:35,588 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:09:35,593 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:09:35,593 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:09:35,597 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:09:35,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:09:34" (1/3) ... [2024-11-19 14:09:35,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ebf947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:09:35, skipping insertion in model container [2024-11-19 14:09:35,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:34" (2/3) ... [2024-11-19 14:09:35,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ebf947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:09:35, skipping insertion in model container [2024-11-19 14:09:35,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:09:35" (3/3) ... [2024-11-19 14:09:35,601 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2024-11-19 14:09:35,620 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:09:35,620 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-11-19 14:09:35,620 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:09:35,691 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 14:09:35,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 63 transitions, 147 flow [2024-11-19 14:09:35,770 INFO L124 PetriNetUnfolderBase]: 7/60 cut-off events. [2024-11-19 14:09:35,771 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 14:09:35,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 60 events. 7/60 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 144 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-19 14:09:35,777 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 63 transitions, 147 flow [2024-11-19 14:09:35,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 58 transitions, 131 flow [2024-11-19 14:09:35,795 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:09:35,805 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;@6dd55954, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:09:35,805 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-19 14:09:35,809 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:09:35,809 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:09:35,809 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:09:35,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:35,810 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:09:35,810 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 14:09:35,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:35,817 INFO L85 PathProgramCache]: Analyzing trace with hash 612274, now seen corresponding path program 1 times [2024-11-19 14:09:35,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:35,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370921551] [2024-11-19 14:09:35,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:35,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:36,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:36,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370921551] [2024-11-19 14:09:36,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370921551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:36,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:36,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:09:36,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323323625] [2024-11-19 14:09:36,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:36,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:36,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:36,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:36,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:36,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-11-19 14:09:36,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 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) [2024-11-19 14:09:36,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:36,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-11-19 14:09:36,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:36,584 INFO L124 PetriNetUnfolderBase]: 697/1438 cut-off events. [2024-11-19 14:09:36,584 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-11-19 14:09:36,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2475 conditions, 1438 events. 697/1438 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8871 event pairs, 482 based on Foata normal form. 3/1141 useless extension candidates. Maximal degree in co-relation 2201. Up to 938 conditions per place. [2024-11-19 14:09:36,607 INFO L140 encePairwiseOnDemand]: 47/63 looper letters, 37 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2024-11-19 14:09:36,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 67 transitions, 243 flow [2024-11-19 14:09:36,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:36,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:36,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-11-19 14:09:36,623 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5753968253968254 [2024-11-19 14:09:36,624 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 131 flow. Second operand 4 states and 145 transitions. [2024-11-19 14:09:36,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 67 transitions, 243 flow [2024-11-19 14:09:36,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 67 transitions, 234 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 14:09:36,632 INFO L231 Difference]: Finished difference. Result has 62 places, 67 transitions, 210 flow [2024-11-19 14:09:36,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=62, PETRI_TRANSITIONS=67} [2024-11-19 14:09:36,639 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-11-19 14:09:36,642 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 67 transitions, 210 flow [2024-11-19 14:09:36,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 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) [2024-11-19 14:09:36,642 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:36,643 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 14:09:36,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:09:36,644 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 14:09:36,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:36,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1060991097, now seen corresponding path program 1 times [2024-11-19 14:09:36,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:36,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040807325] [2024-11-19 14:09:36,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:36,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:36,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:36,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:36,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040807325] [2024-11-19 14:09:36,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040807325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:36,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359385522] [2024-11-19 14:09:36,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:36,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:36,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:36,817 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:36,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:09:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:36,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:09:36,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:36,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:36,975 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:09:36,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359385522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:36,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:09:36,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:09:36,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294987931] [2024-11-19 14:09:36,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:36,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:09:36,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:36,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:09:36,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:09:37,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-11-19 14:09:37,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 67 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:37,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:37,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-11-19 14:09:37,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:37,331 INFO L124 PetriNetUnfolderBase]: 697/1435 cut-off events. [2024-11-19 14:09:37,332 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-19 14:09:37,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2467 conditions, 1435 events. 697/1435 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8870 event pairs, 482 based on Foata normal form. 3/1143 useless extension candidates. Maximal degree in co-relation 2394. Up to 923 conditions per place. [2024-11-19 14:09:37,343 INFO L140 encePairwiseOnDemand]: 50/63 looper letters, 27 selfloop transitions, 17 changer transitions 0/64 dead transitions. [2024-11-19 14:09:37,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 64 transitions, 286 flow [2024-11-19 14:09:37,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:09:37,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:09:37,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-11-19 14:09:37,348 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4894179894179894 [2024-11-19 14:09:37,348 INFO L175 Difference]: Start difference. First operand has 62 places, 67 transitions, 210 flow. Second operand 6 states and 185 transitions. [2024-11-19 14:09:37,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 64 transitions, 286 flow [2024-11-19 14:09:37,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:09:37,351 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 232 flow [2024-11-19 14:09:37,351 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=232, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-11-19 14:09:37,353 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2024-11-19 14:09:37,353 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 232 flow [2024-11-19 14:09:37,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:37,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:37,354 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:09:37,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:09:37,558 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 [2024-11-19 14:09:37,559 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 14:09:37,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:37,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1469013752, now seen corresponding path program 1 times [2024-11-19 14:09:37,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:37,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528998664] [2024-11-19 14:09:37,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:37,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:37,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:37,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528998664] [2024-11-19 14:09:37,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528998664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:37,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518591087] [2024-11-19 14:09:37,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:37,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:37,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:37,654 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:37,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:09:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:37,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:09:37,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:37,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:37,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:37,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:37,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518591087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:37,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:37,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:09:37,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047299319] [2024-11-19 14:09:37,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:37,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:09:37,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:37,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:09:37,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:09:37,843 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-11-19 14:09:37,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 232 flow. Second operand has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:37,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:37,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-11-19 14:09:37,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:38,153 INFO L124 PetriNetUnfolderBase]: 706/1471 cut-off events. [2024-11-19 14:09:38,154 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-11-19 14:09:38,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2608 conditions, 1471 events. 706/1471 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 9192 event pairs, 482 based on Foata normal form. 9/1185 useless extension candidates. Maximal degree in co-relation 2396. Up to 938 conditions per place. [2024-11-19 14:09:38,165 INFO L140 encePairwiseOnDemand]: 50/63 looper letters, 34 selfloop transitions, 37 changer transitions 0/91 dead transitions. [2024-11-19 14:09:38,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 91 transitions, 548 flow [2024-11-19 14:09:38,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:09:38,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:09:38,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 310 transitions. [2024-11-19 14:09:38,168 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-11-19 14:09:38,168 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 232 flow. Second operand 10 states and 310 transitions. [2024-11-19 14:09:38,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 91 transitions, 548 flow [2024-11-19 14:09:38,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 91 transitions, 465 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-19 14:09:38,174 INFO L231 Difference]: Finished difference. Result has 71 places, 91 transitions, 447 flow [2024-11-19 14:09:38,175 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=447, PETRI_PLACES=71, PETRI_TRANSITIONS=91} [2024-11-19 14:09:38,178 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 10 predicate places. [2024-11-19 14:09:38,178 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 91 transitions, 447 flow [2024-11-19 14:09:38,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:38,179 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:38,179 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:38,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 14:09:38,383 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 [2024-11-19 14:09:38,384 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 14:09:38,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:38,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1020442761, now seen corresponding path program 1 times [2024-11-19 14:09:38,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:38,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329024736] [2024-11-19 14:09:38,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:38,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:38,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:38,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:38,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329024736] [2024-11-19 14:09:38,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329024736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:38,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:38,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:09:38,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228399517] [2024-11-19 14:09:38,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:38,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:38,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:38,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:38,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:38,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 63 [2024-11-19 14:09:38,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 91 transitions, 447 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:38,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:38,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 63 [2024-11-19 14:09:38,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:38,733 INFO L124 PetriNetUnfolderBase]: 1490/2560 cut-off events. [2024-11-19 14:09:38,734 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-11-19 14:09:38,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4824 conditions, 2560 events. 1490/2560 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 15257 event pairs, 802 based on Foata normal form. 74/2061 useless extension candidates. Maximal degree in co-relation 4726. Up to 1559 conditions per place. [2024-11-19 14:09:38,754 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 99 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2024-11-19 14:09:38,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 124 transitions, 725 flow [2024-11-19 14:09:38,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:38,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:38,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-11-19 14:09:38,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2024-11-19 14:09:38,756 INFO L175 Difference]: Start difference. First operand has 71 places, 91 transitions, 447 flow. Second operand 4 states and 177 transitions. [2024-11-19 14:09:38,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 124 transitions, 725 flow [2024-11-19 14:09:38,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 124 transitions, 688 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-19 14:09:38,764 INFO L231 Difference]: Finished difference. Result has 74 places, 94 transitions, 439 flow [2024-11-19 14:09:38,765 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=439, PETRI_PLACES=74, PETRI_TRANSITIONS=94} [2024-11-19 14:09:38,765 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2024-11-19 14:09:38,766 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 94 transitions, 439 flow [2024-11-19 14:09:38,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:38,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:38,766 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:38,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:09:38,767 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 14:09:38,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:38,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1345993272, now seen corresponding path program 1 times [2024-11-19 14:09:38,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:38,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946218784] [2024-11-19 14:09:38,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:38,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:38,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:38,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:38,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946218784] [2024-11-19 14:09:38,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946218784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:38,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:38,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:09:38,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564660874] [2024-11-19 14:09:38,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:38,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:09:38,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:38,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:09:38,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:09:38,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 63 [2024-11-19 14:09:38,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 94 transitions, 439 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:38,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:38,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 63 [2024-11-19 14:09:38,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:39,128 INFO L124 PetriNetUnfolderBase]: 1551/3174 cut-off events. [2024-11-19 14:09:39,129 INFO L125 PetriNetUnfolderBase]: For 955/1057 co-relation queries the response was YES. [2024-11-19 14:09:39,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6337 conditions, 3174 events. 1551/3174 cut-off events. For 955/1057 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 22189 event pairs, 742 based on Foata normal form. 0/2684 useless extension candidates. Maximal degree in co-relation 6241. Up to 1534 conditions per place. [2024-11-19 14:09:39,158 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 86 selfloop transitions, 3 changer transitions 0/112 dead transitions. [2024-11-19 14:09:39,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 112 transitions, 675 flow [2024-11-19 14:09:39,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:09:39,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:09:39,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-11-19 14:09:39,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7195767195767195 [2024-11-19 14:09:39,159 INFO L175 Difference]: Start difference. First operand has 74 places, 94 transitions, 439 flow. Second operand 3 states and 136 transitions. [2024-11-19 14:09:39,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 112 transitions, 675 flow [2024-11-19 14:09:39,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 112 transitions, 669 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:09:39,191 INFO L231 Difference]: Finished difference. Result has 76 places, 96 transitions, 457 flow [2024-11-19 14:09:39,192 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=457, PETRI_PLACES=76, PETRI_TRANSITIONS=96} [2024-11-19 14:09:39,194 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 15 predicate places. [2024-11-19 14:09:39,194 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 96 transitions, 457 flow [2024-11-19 14:09:39,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:39,195 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:39,195 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:39,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:09:39,195 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 14:09:39,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:39,196 INFO L85 PathProgramCache]: Analyzing trace with hash 232420135, now seen corresponding path program 1 times [2024-11-19 14:09:39,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:39,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752295834] [2024-11-19 14:09:39,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:39,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:39,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:39,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:39,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752295834] [2024-11-19 14:09:39,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752295834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:39,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:39,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:09:39,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273961602] [2024-11-19 14:09:39,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:39,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:09:39,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:39,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:09:39,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:09:39,341 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 63 [2024-11-19 14:09:39,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 96 transitions, 457 flow. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:39,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:39,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 63 [2024-11-19 14:09:39,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:39,872 INFO L124 PetriNetUnfolderBase]: 2210/4359 cut-off events. [2024-11-19 14:09:39,872 INFO L125 PetriNetUnfolderBase]: For 1725/1757 co-relation queries the response was YES. [2024-11-19 14:09:39,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9500 conditions, 4359 events. 2210/4359 cut-off events. For 1725/1757 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 30065 event pairs, 1330 based on Foata normal form. 100/3915 useless extension candidates. Maximal degree in co-relation 9403. Up to 1991 conditions per place. [2024-11-19 14:09:39,917 INFO L140 encePairwiseOnDemand]: 51/63 looper letters, 96 selfloop transitions, 18 changer transitions 0/137 dead transitions. [2024-11-19 14:09:39,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 137 transitions, 819 flow [2024-11-19 14:09:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:09:39,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:09:39,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 255 transitions. [2024-11-19 14:09:39,919 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2024-11-19 14:09:39,919 INFO L175 Difference]: Start difference. First operand has 76 places, 96 transitions, 457 flow. Second operand 6 states and 255 transitions. [2024-11-19 14:09:39,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 137 transitions, 819 flow [2024-11-19 14:09:39,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 137 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:09:39,931 INFO L231 Difference]: Finished difference. Result has 84 places, 100 transitions, 543 flow [2024-11-19 14:09:39,932 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=543, PETRI_PLACES=84, PETRI_TRANSITIONS=100} [2024-11-19 14:09:39,932 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 23 predicate places. [2024-11-19 14:09:39,932 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 100 transitions, 543 flow [2024-11-19 14:09:39,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:39,933 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:39,933 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:39,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:09:39,933 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 14:09:39,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:39,934 INFO L85 PathProgramCache]: Analyzing trace with hash 714400379, now seen corresponding path program 1 times [2024-11-19 14:09:39,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:39,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899463374] [2024-11-19 14:09:39,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:39,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:39,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:39,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899463374] [2024-11-19 14:09:39,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899463374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:39,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:39,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:09:39,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124136234] [2024-11-19 14:09:39,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:39,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:39,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:39,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:39,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:39,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2024-11-19 14:09:39,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 100 transitions, 543 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:39,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:39,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2024-11-19 14:09:39,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:40,653 INFO L124 PetriNetUnfolderBase]: 3397/5877 cut-off events. [2024-11-19 14:09:40,654 INFO L125 PetriNetUnfolderBase]: For 3921/3977 co-relation queries the response was YES. [2024-11-19 14:09:40,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14312 conditions, 5877 events. 3397/5877 cut-off events. For 3921/3977 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 37059 event pairs, 1779 based on Foata normal form. 236/5659 useless extension candidates. Maximal degree in co-relation 14209. Up to 3528 conditions per place. [2024-11-19 14:09:40,749 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 112 selfloop transitions, 4 changer transitions 0/136 dead transitions. [2024-11-19 14:09:40,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 136 transitions, 921 flow [2024-11-19 14:09:40,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:40,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:40,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2024-11-19 14:09:40,750 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6706349206349206 [2024-11-19 14:09:40,750 INFO L175 Difference]: Start difference. First operand has 84 places, 100 transitions, 543 flow. Second operand 4 states and 169 transitions. [2024-11-19 14:09:40,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 136 transitions, 921 flow [2024-11-19 14:09:40,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 136 transitions, 905 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-19 14:09:40,758 INFO L231 Difference]: Finished difference. Result has 88 places, 101 transitions, 548 flow [2024-11-19 14:09:40,759 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=548, PETRI_PLACES=88, PETRI_TRANSITIONS=101} [2024-11-19 14:09:40,759 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 27 predicate places. [2024-11-19 14:09:40,760 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 101 transitions, 548 flow [2024-11-19 14:09:40,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:40,760 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:40,760 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:40,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 14:09:40,761 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 14:09:40,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:40,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1139398177, now seen corresponding path program 1 times [2024-11-19 14:09:40,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:40,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477307151] [2024-11-19 14:09:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:40,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:40,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:40,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:40,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477307151] [2024-11-19 14:09:40,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477307151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:40,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971315492] [2024-11-19 14:09:40,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:40,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:40,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:40,838 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:40,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:09:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:40,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:09:40,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:40,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:40,975 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:09:40,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971315492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:40,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:09:40,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2024-11-19 14:09:40,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571577202] [2024-11-19 14:09:40,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:40,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:09:40,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:40,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:09:40,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:09:40,986 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2024-11-19 14:09:40,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 101 transitions, 548 flow. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:40,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:40,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2024-11-19 14:09:40,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:41,499 INFO L124 PetriNetUnfolderBase]: 2102/4010 cut-off events. [2024-11-19 14:09:41,500 INFO L125 PetriNetUnfolderBase]: For 3302/3366 co-relation queries the response was YES. [2024-11-19 14:09:41,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9719 conditions, 4010 events. 2102/4010 cut-off events. For 3302/3366 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 25734 event pairs, 1412 based on Foata normal form. 41/3536 useless extension candidates. Maximal degree in co-relation 9614. Up to 2491 conditions per place. [2024-11-19 14:09:41,546 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 82 selfloop transitions, 18 changer transitions 2/125 dead transitions. [2024-11-19 14:09:41,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 125 transitions, 831 flow [2024-11-19 14:09:41,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:09:41,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:09:41,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 239 transitions. [2024-11-19 14:09:41,548 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6322751322751323 [2024-11-19 14:09:41,548 INFO L175 Difference]: Start difference. First operand has 88 places, 101 transitions, 548 flow. Second operand 6 states and 239 transitions. [2024-11-19 14:09:41,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 125 transitions, 831 flow [2024-11-19 14:09:41,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 125 transitions, 821 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:09:41,557 INFO L231 Difference]: Finished difference. Result has 93 places, 103 transitions, 600 flow [2024-11-19 14:09:41,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=600, PETRI_PLACES=93, PETRI_TRANSITIONS=103} [2024-11-19 14:09:41,558 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 32 predicate places. [2024-11-19 14:09:41,558 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 103 transitions, 600 flow [2024-11-19 14:09:41,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:41,558 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:41,559 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-19 14:09:41,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 14:09:41,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:41,760 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 14:09:41,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:41,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1645532079, now seen corresponding path program 2 times [2024-11-19 14:09:41,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:41,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188776605] [2024-11-19 14:09:41,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:41,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:41,773 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:09:41,773 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:41,806 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:09:41,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:41,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188776605] [2024-11-19 14:09:41,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188776605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:41,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195578326] [2024-11-19 14:09:41,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:41,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:41,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:41,809 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:41,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:09:41,877 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:09:41,877 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:41,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:09:41,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:41,905 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:09:41,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:41,932 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:09:41,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195578326] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:41,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:41,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-19 14:09:41,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181925551] [2024-11-19 14:09:41,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:41,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:41,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:41,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:41,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:41,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-11-19 14:09:41,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 103 transitions, 600 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) [2024-11-19 14:09:41,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:41,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-11-19 14:09:41,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:42,344 INFO L124 PetriNetUnfolderBase]: 1782/3566 cut-off events. [2024-11-19 14:09:42,345 INFO L125 PetriNetUnfolderBase]: For 3217/3231 co-relation queries the response was YES. [2024-11-19 14:09:42,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9395 conditions, 3566 events. 1782/3566 cut-off events. For 3217/3231 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 23627 event pairs, 1371 based on Foata normal form. 1/3291 useless extension candidates. Maximal degree in co-relation 9289. Up to 2528 conditions per place. [2024-11-19 14:09:42,377 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 65 selfloop transitions, 16 changer transitions 0/102 dead transitions. [2024-11-19 14:09:42,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 102 transitions, 752 flow [2024-11-19 14:09:42,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:42,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:42,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-11-19 14:09:42,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.503968253968254 [2024-11-19 14:09:42,379 INFO L175 Difference]: Start difference. First operand has 93 places, 103 transitions, 600 flow. Second operand 4 states and 127 transitions. [2024-11-19 14:09:42,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 102 transitions, 752 flow [2024-11-19 14:09:42,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 102 transitions, 722 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:09:42,387 INFO L231 Difference]: Finished difference. Result has 92 places, 102 transitions, 592 flow [2024-11-19 14:09:42,388 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=592, PETRI_PLACES=92, PETRI_TRANSITIONS=102} [2024-11-19 14:09:42,389 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 31 predicate places. [2024-11-19 14:09:42,389 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 102 transitions, 592 flow [2024-11-19 14:09:42,389 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) [2024-11-19 14:09:42,389 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:42,389 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:42,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 14:09:42,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:42,594 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 14:09:42,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:42,594 INFO L85 PathProgramCache]: Analyzing trace with hash 116033873, now seen corresponding path program 1 times [2024-11-19 14:09:42,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:42,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257307635] [2024-11-19 14:09:42,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:42,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:42,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:42,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:42,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257307635] [2024-11-19 14:09:42,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257307635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:42,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:42,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:09:42,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837247245] [2024-11-19 14:09:42,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:42,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:42,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:42,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:42,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:42,659 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2024-11-19 14:09:42,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 102 transitions, 592 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:42,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:42,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2024-11-19 14:09:42,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:43,339 INFO L124 PetriNetUnfolderBase]: 4000/7112 cut-off events. [2024-11-19 14:09:43,340 INFO L125 PetriNetUnfolderBase]: For 7126/7376 co-relation queries the response was YES. [2024-11-19 14:09:43,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18224 conditions, 7112 events. 4000/7112 cut-off events. For 7126/7376 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 46816 event pairs, 1946 based on Foata normal form. 127/6505 useless extension candidates. Maximal degree in co-relation 18117. Up to 3609 conditions per place. [2024-11-19 14:09:43,396 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 127 selfloop transitions, 3 changer transitions 0/150 dead transitions. [2024-11-19 14:09:43,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 150 transitions, 1090 flow [2024-11-19 14:09:43,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:43,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:43,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2024-11-19 14:09:43,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2024-11-19 14:09:43,398 INFO L175 Difference]: Start difference. First operand has 92 places, 102 transitions, 592 flow. Second operand 4 states and 171 transitions. [2024-11-19 14:09:43,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 150 transitions, 1090 flow [2024-11-19 14:09:43,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 150 transitions, 1058 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:09:43,462 INFO L231 Difference]: Finished difference. Result has 94 places, 104 transitions, 582 flow [2024-11-19 14:09:43,462 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=582, PETRI_PLACES=94, PETRI_TRANSITIONS=104} [2024-11-19 14:09:43,463 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 33 predicate places. [2024-11-19 14:09:43,464 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 104 transitions, 582 flow [2024-11-19 14:09:43,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:43,465 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:43,465 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:43,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 14:09:43,465 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 14:09:43,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:43,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1266516722, now seen corresponding path program 1 times [2024-11-19 14:09:43,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:43,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131678090] [2024-11-19 14:09:43,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:43,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:09:43,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:43,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131678090] [2024-11-19 14:09:43,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131678090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:43,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89589555] [2024-11-19 14:09:43,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:43,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:43,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:43,581 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:43,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 14:09:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:43,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 14:09:43,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:43,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:09:43,839 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:43,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:09:43,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89589555] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:43,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:43,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-19 14:09:43,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903934223] [2024-11-19 14:09:43,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:43,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 14:09:43,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:43,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 14:09:43,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-19 14:09:44,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2024-11-19 14:09:44,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 104 transitions, 582 flow. Second operand has 19 states, 19 states have (on average 23.105263157894736) internal successors, (439), 19 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:44,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:44,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2024-11-19 14:09:44,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:45,784 INFO L124 PetriNetUnfolderBase]: 4744/7833 cut-off events. [2024-11-19 14:09:45,784 INFO L125 PetriNetUnfolderBase]: For 7495/8064 co-relation queries the response was YES. [2024-11-19 14:09:45,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21928 conditions, 7833 events. 4744/7833 cut-off events. For 7495/8064 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 49540 event pairs, 1093 based on Foata normal form. 285/7364 useless extension candidates. Maximal degree in co-relation 21762. Up to 1591 conditions per place. [2024-11-19 14:09:45,915 INFO L140 encePairwiseOnDemand]: 48/63 looper letters, 202 selfloop transitions, 67 changer transitions 0/289 dead transitions. [2024-11-19 14:09:45,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 289 transitions, 1948 flow [2024-11-19 14:09:45,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 14:09:45,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-19 14:09:45,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 563 transitions. [2024-11-19 14:09:45,919 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5256769374416433 [2024-11-19 14:09:45,920 INFO L175 Difference]: Start difference. First operand has 94 places, 104 transitions, 582 flow. Second operand 17 states and 563 transitions. [2024-11-19 14:09:45,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 289 transitions, 1948 flow [2024-11-19 14:09:45,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 289 transitions, 1930 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:09:45,948 INFO L231 Difference]: Finished difference. Result has 111 places, 133 transitions, 1009 flow [2024-11-19 14:09:45,949 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1009, PETRI_PLACES=111, PETRI_TRANSITIONS=133} [2024-11-19 14:09:45,950 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 50 predicate places. [2024-11-19 14:09:45,950 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 133 transitions, 1009 flow [2024-11-19 14:09:45,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 23.105263157894736) internal successors, (439), 19 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:45,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:45,951 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:45,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 14:09:46,151 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 [2024-11-19 14:09:46,152 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 14:09:46,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:46,152 INFO L85 PathProgramCache]: Analyzing trace with hash 133876755, now seen corresponding path program 1 times [2024-11-19 14:09:46,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:46,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626689454] [2024-11-19 14:09:46,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:46,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:09:46,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:46,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626689454] [2024-11-19 14:09:46,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626689454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:46,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485842433] [2024-11-19 14:09:46,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:46,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:46,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:46,323 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:46,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 14:09:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:46,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 14:09:46,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:46,507 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 14:09:46,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:46,617 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 14:09:46,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485842433] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:46,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:46,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2024-11-19 14:09:46,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235459972] [2024-11-19 14:09:46,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:46,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 14:09:46,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:46,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 14:09:46,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-19 14:09:46,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-11-19 14:09:46,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 133 transitions, 1009 flow. Second operand has 21 states, 21 states have (on average 24.285714285714285) internal successors, (510), 21 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:46,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:46,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-11-19 14:09:46,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:48,106 INFO L124 PetriNetUnfolderBase]: 4789/8509 cut-off events. [2024-11-19 14:09:48,106 INFO L125 PetriNetUnfolderBase]: For 13524/14004 co-relation queries the response was YES. [2024-11-19 14:09:48,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24760 conditions, 8509 events. 4789/8509 cut-off events. For 13524/14004 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 58195 event pairs, 3715 based on Foata normal form. 101/7866 useless extension candidates. Maximal degree in co-relation 24624. Up to 3615 conditions per place. [2024-11-19 14:09:48,164 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 64 selfloop transitions, 52 changer transitions 0/137 dead transitions. [2024-11-19 14:09:48,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 137 transitions, 1160 flow [2024-11-19 14:09:48,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 14:09:48,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 14:09:48,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 362 transitions. [2024-11-19 14:09:48,166 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47883597883597884 [2024-11-19 14:09:48,166 INFO L175 Difference]: Start difference. First operand has 111 places, 133 transitions, 1009 flow. Second operand 12 states and 362 transitions. [2024-11-19 14:09:48,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 137 transitions, 1160 flow [2024-11-19 14:09:48,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 137 transitions, 1010 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-11-19 14:09:48,188 INFO L231 Difference]: Finished difference. Result has 113 places, 116 transitions, 807 flow [2024-11-19 14:09:48,189 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=807, PETRI_PLACES=113, PETRI_TRANSITIONS=116} [2024-11-19 14:09:48,189 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 52 predicate places. [2024-11-19 14:09:48,189 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 116 transitions, 807 flow [2024-11-19 14:09:48,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 24.285714285714285) internal successors, (510), 21 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:48,190 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:48,190 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 1, 1, 1] [2024-11-19 14:09:48,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 14:09:48,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:48,391 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 14:09:48,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:48,391 INFO L85 PathProgramCache]: Analyzing trace with hash 299924012, now seen corresponding path program 2 times [2024-11-19 14:09:48,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:48,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208913778] [2024-11-19 14:09:48,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:48,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:48,403 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:09:48,403 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:48,435 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-19 14:09:48,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:48,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208913778] [2024-11-19 14:09:48,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208913778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:48,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408646190] [2024-11-19 14:09:48,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:48,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:48,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:48,438 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:48,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 14:09:48,517 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:09:48,517 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:48,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:09:48,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:48,548 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-19 14:09:48,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:48,585 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-19 14:09:48,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408646190] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:48,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:48,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-19 14:09:48,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802383669] [2024-11-19 14:09:48,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:48,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:09:48,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:48,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:09:48,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:09:48,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-11-19 14:09:48,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 116 transitions, 807 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:48,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:48,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-11-19 14:09:48,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:49,430 INFO L124 PetriNetUnfolderBase]: 4679/8050 cut-off events. [2024-11-19 14:09:49,431 INFO L125 PetriNetUnfolderBase]: For 6427/7135 co-relation queries the response was YES. [2024-11-19 14:09:49,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21444 conditions, 8050 events. 4679/8050 cut-off events. For 6427/7135 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 54678 event pairs, 3715 based on Foata normal form. 210/7693 useless extension candidates. Maximal degree in co-relation 21329. Up to 6577 conditions per place. [2024-11-19 14:09:49,487 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 50 selfloop transitions, 43 changer transitions 0/114 dead transitions. [2024-11-19 14:09:49,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 114 transitions, 973 flow [2024-11-19 14:09:49,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:09:49,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:09:49,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2024-11-19 14:09:49,488 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.473015873015873 [2024-11-19 14:09:49,488 INFO L175 Difference]: Start difference. First operand has 113 places, 116 transitions, 807 flow. Second operand 5 states and 149 transitions. [2024-11-19 14:09:49,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 114 transitions, 973 flow [2024-11-19 14:09:49,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 114 transitions, 782 flow, removed 6 selfloop flow, removed 18 redundant places. [2024-11-19 14:09:49,512 INFO L231 Difference]: Finished difference. Result has 97 places, 114 transitions, 682 flow [2024-11-19 14:09:49,512 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=682, PETRI_PLACES=97, PETRI_TRANSITIONS=114} [2024-11-19 14:09:49,513 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 36 predicate places. [2024-11-19 14:09:49,513 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 114 transitions, 682 flow [2024-11-19 14:09:49,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:49,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:49,514 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:49,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 14:09:49,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:49,714 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 14:09:49,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:49,715 INFO L85 PathProgramCache]: Analyzing trace with hash 793445938, now seen corresponding path program 1 times [2024-11-19 14:09:49,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:49,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040854815] [2024-11-19 14:09:49,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:49,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:49,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 14:09:49,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:49,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040854815] [2024-11-19 14:09:49,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040854815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:49,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:49,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:09:49,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402764882] [2024-11-19 14:09:49,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:49,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:09:49,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:49,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:09:49,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:09:49,865 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2024-11-19 14:09:49,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 114 transitions, 682 flow. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:49,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:49,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2024-11-19 14:09:49,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:50,835 INFO L124 PetriNetUnfolderBase]: 5787/9811 cut-off events. [2024-11-19 14:09:50,835 INFO L125 PetriNetUnfolderBase]: For 7299/7744 co-relation queries the response was YES. [2024-11-19 14:09:50,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24867 conditions, 9811 events. 5787/9811 cut-off events. For 7299/7744 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 66571 event pairs, 4425 based on Foata normal form. 66/8599 useless extension candidates. Maximal degree in co-relation 17043. Up to 7678 conditions per place. [2024-11-19 14:09:50,893 INFO L140 encePairwiseOnDemand]: 54/63 looper letters, 68 selfloop transitions, 15 changer transitions 28/131 dead transitions. [2024-11-19 14:09:50,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 131 transitions, 972 flow [2024-11-19 14:09:50,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:09:50,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:09:50,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 234 transitions. [2024-11-19 14:09:50,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-19 14:09:50,895 INFO L175 Difference]: Start difference. First operand has 97 places, 114 transitions, 682 flow. Second operand 6 states and 234 transitions. [2024-11-19 14:09:50,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 131 transitions, 972 flow [2024-11-19 14:09:50,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 131 transitions, 894 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:09:50,912 INFO L231 Difference]: Finished difference. Result has 101 places, 103 transitions, 547 flow [2024-11-19 14:09:50,913 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=547, PETRI_PLACES=101, PETRI_TRANSITIONS=103} [2024-11-19 14:09:50,913 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 40 predicate places. [2024-11-19 14:09:50,915 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 103 transitions, 547 flow [2024-11-19 14:09:50,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:50,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:50,915 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] [2024-11-19 14:09:50,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 14:09:50,915 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 14:09:50,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:50,916 INFO L85 PathProgramCache]: Analyzing trace with hash -501443449, now seen corresponding path program 1 times [2024-11-19 14:09:50,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:50,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571117910] [2024-11-19 14:09:50,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:50,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:50,988 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:09:50,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:50,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571117910] [2024-11-19 14:09:50,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571117910] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:50,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970971511] [2024-11-19 14:09:50,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:50,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:50,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:50,991 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:50,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 14:09:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:51,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 14:09:51,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:51,105 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:09:51,106 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:09:51,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970971511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:51,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:09:51,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-19 14:09:51,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179905412] [2024-11-19 14:09:51,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:51,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:51,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:51,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:51,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 14:09:51,117 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 63 [2024-11-19 14:09:51,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 103 transitions, 547 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:51,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:51,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 63 [2024-11-19 14:09:51,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:52,003 INFO L124 PetriNetUnfolderBase]: 6439/9962 cut-off events. [2024-11-19 14:09:52,004 INFO L125 PetriNetUnfolderBase]: For 6291/7236 co-relation queries the response was YES. [2024-11-19 14:09:52,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26878 conditions, 9962 events. 6439/9962 cut-off events. For 6291/7236 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 63681 event pairs, 729 based on Foata normal form. 486/10088 useless extension candidates. Maximal degree in co-relation 18998. Up to 3828 conditions per place. [2024-11-19 14:09:52,070 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 120 selfloop transitions, 7 changer transitions 0/143 dead transitions. [2024-11-19 14:09:52,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 143 transitions, 947 flow [2024-11-19 14:09:52,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:52,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:52,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-11-19 14:09:52,072 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2024-11-19 14:09:52,072 INFO L175 Difference]: Start difference. First operand has 101 places, 103 transitions, 547 flow. Second operand 4 states and 160 transitions. [2024-11-19 14:09:52,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 143 transitions, 947 flow [2024-11-19 14:09:52,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 143 transitions, 855 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-11-19 14:09:52,101 INFO L231 Difference]: Finished difference. Result has 84 places, 101 transitions, 477 flow [2024-11-19 14:09:52,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=477, PETRI_PLACES=84, PETRI_TRANSITIONS=101} [2024-11-19 14:09:52,102 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 23 predicate places. [2024-11-19 14:09:52,102 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 101 transitions, 477 flow [2024-11-19 14:09:52,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:52,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:52,102 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] [2024-11-19 14:09:52,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 14:09:52,303 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 [2024-11-19 14:09:52,303 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 14:09:52,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:52,303 INFO L85 PathProgramCache]: Analyzing trace with hash -501443448, now seen corresponding path program 1 times [2024-11-19 14:09:52,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:52,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856735516] [2024-11-19 14:09:52,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:52,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:52,389 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:09:52,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:52,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856735516] [2024-11-19 14:09:52,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856735516] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:52,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105259879] [2024-11-19 14:09:52,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:52,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:52,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:52,393 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:52,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 14:09:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:52,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:09:52,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:52,523 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:09:52,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:52,547 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:09:52,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105259879] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:52,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:52,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-19 14:09:52,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318445963] [2024-11-19 14:09:52,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:52,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 14:09:52,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:52,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 14:09:52,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-19 14:09:52,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2024-11-19 14:09:52,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 101 transitions, 477 flow. Second operand has 10 states, 10 states have (on average 28.7) internal successors, (287), 10 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:52,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:52,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2024-11-19 14:09:52,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:53,789 INFO L124 PetriNetUnfolderBase]: 7995/13452 cut-off events. [2024-11-19 14:09:53,789 INFO L125 PetriNetUnfolderBase]: For 9653/10604 co-relation queries the response was YES. [2024-11-19 14:09:53,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34301 conditions, 13452 events. 7995/13452 cut-off events. For 9653/10604 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 94028 event pairs, 1436 based on Foata normal form. 917/13826 useless extension candidates. Maximal degree in co-relation 20107. Up to 3460 conditions per place. [2024-11-19 14:09:53,892 INFO L140 encePairwiseOnDemand]: 56/63 looper letters, 186 selfloop transitions, 10 changer transitions 0/213 dead transitions. [2024-11-19 14:09:53,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 213 transitions, 1244 flow [2024-11-19 14:09:53,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 14:09:53,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 14:09:53,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 288 transitions. [2024-11-19 14:09:53,894 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-11-19 14:09:53,894 INFO L175 Difference]: Start difference. First operand has 84 places, 101 transitions, 477 flow. Second operand 7 states and 288 transitions. [2024-11-19 14:09:53,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 213 transitions, 1244 flow [2024-11-19 14:09:53,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 213 transitions, 1222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:09:53,927 INFO L231 Difference]: Finished difference. Result has 91 places, 106 transitions, 528 flow [2024-11-19 14:09:53,927 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=528, PETRI_PLACES=91, PETRI_TRANSITIONS=106} [2024-11-19 14:09:53,928 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 30 predicate places. [2024-11-19 14:09:53,928 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 106 transitions, 528 flow [2024-11-19 14:09:53,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 28.7) internal successors, (287), 10 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:53,928 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:53,928 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:53,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 14:09:54,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 14:09:54,132 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 14:09:54,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:54,133 INFO L85 PathProgramCache]: Analyzing trace with hash 272233574, now seen corresponding path program 1 times [2024-11-19 14:09:54,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:54,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462898673] [2024-11-19 14:09:54,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:54,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:54,281 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 14:09:54,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:54,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462898673] [2024-11-19 14:09:54,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462898673] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:54,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084789488] [2024-11-19 14:09:54,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:54,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:54,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:54,284 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:54,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 14:09:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:54,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:09:54,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:54,413 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 14:09:54,414 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:54,449 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 14:09:54,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084789488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:54,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:54,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 14:09:54,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135087150] [2024-11-19 14:09:54,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:54,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:09:54,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:54,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:09:54,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:09:54,461 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 63 [2024-11-19 14:09:54,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 106 transitions, 528 flow. Second operand has 12 states, 12 states have (on average 29.0) internal successors, (348), 12 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:54,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:54,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 63 [2024-11-19 14:09:54,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:56,030 INFO L124 PetriNetUnfolderBase]: 9483/14725 cut-off events. [2024-11-19 14:09:56,030 INFO L125 PetriNetUnfolderBase]: For 23043/23759 co-relation queries the response was YES. [2024-11-19 14:09:56,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42860 conditions, 14725 events. 9483/14725 cut-off events. For 23043/23759 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 95459 event pairs, 2913 based on Foata normal form. 728/14484 useless extension candidates. Maximal degree in co-relation 31253. Up to 6089 conditions per place. [2024-11-19 14:09:56,123 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 245 selfloop transitions, 18 changer transitions 0/283 dead transitions. [2024-11-19 14:09:56,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 283 transitions, 1959 flow [2024-11-19 14:09:56,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:09:56,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:09:56,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 429 transitions. [2024-11-19 14:09:56,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.680952380952381 [2024-11-19 14:09:56,125 INFO L175 Difference]: Start difference. First operand has 91 places, 106 transitions, 528 flow. Second operand 10 states and 429 transitions. [2024-11-19 14:09:56,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 283 transitions, 1959 flow [2024-11-19 14:09:56,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 283 transitions, 1856 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-11-19 14:09:56,159 INFO L231 Difference]: Finished difference. Result has 101 places, 115 transitions, 600 flow [2024-11-19 14:09:56,159 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=600, PETRI_PLACES=101, PETRI_TRANSITIONS=115} [2024-11-19 14:09:56,159 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 40 predicate places. [2024-11-19 14:09:56,160 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 115 transitions, 600 flow [2024-11-19 14:09:56,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 29.0) internal successors, (348), 12 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:56,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:56,160 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:56,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 14:09:56,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 14:09:56,361 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 14:09:56,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:56,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1998715420, now seen corresponding path program 1 times [2024-11-19 14:09:56,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:56,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378395857] [2024-11-19 14:09:56,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:56,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:56,428 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:09:56,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:56,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378395857] [2024-11-19 14:09:56,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378395857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:56,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:56,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:09:56,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690822270] [2024-11-19 14:09:56,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:56,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:56,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:56,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:56,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:56,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2024-11-19 14:09:56,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 115 transitions, 600 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:56,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:56,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2024-11-19 14:09:56,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:57,650 INFO L124 PetriNetUnfolderBase]: 11443/18442 cut-off events. [2024-11-19 14:09:57,651 INFO L125 PetriNetUnfolderBase]: For 25728/26840 co-relation queries the response was YES. [2024-11-19 14:09:57,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55655 conditions, 18442 events. 11443/18442 cut-off events. For 25728/26840 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 126939 event pairs, 3781 based on Foata normal form. 665/18449 useless extension candidates. Maximal degree in co-relation 45156. Up to 7396 conditions per place. [2024-11-19 14:09:57,819 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 148 selfloop transitions, 10 changer transitions 0/175 dead transitions. [2024-11-19 14:09:57,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 175 transitions, 1214 flow [2024-11-19 14:09:57,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:57,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:57,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2024-11-19 14:09:57,820 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6468253968253969 [2024-11-19 14:09:57,820 INFO L175 Difference]: Start difference. First operand has 101 places, 115 transitions, 600 flow. Second operand 4 states and 163 transitions. [2024-11-19 14:09:57,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 175 transitions, 1214 flow [2024-11-19 14:09:57,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 175 transitions, 1162 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-19 14:09:57,922 INFO L231 Difference]: Finished difference. Result has 100 places, 115 transitions, 607 flow [2024-11-19 14:09:57,922 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=607, PETRI_PLACES=100, PETRI_TRANSITIONS=115} [2024-11-19 14:09:57,923 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 39 predicate places. [2024-11-19 14:09:57,923 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 115 transitions, 607 flow [2024-11-19 14:09:57,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:57,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:57,923 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-19 14:09:57,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 14:09:57,923 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 14:09:57,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:57,924 INFO L85 PathProgramCache]: Analyzing trace with hash 886737835, now seen corresponding path program 1 times [2024-11-19 14:09:57,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:57,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749187440] [2024-11-19 14:09:57,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:57,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:09:58,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:58,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749187440] [2024-11-19 14:09:58,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749187440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:58,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608483232] [2024-11-19 14:09:58,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:58,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:58,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:58,004 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:58,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 14:09:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:58,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 14:09:58,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:58,232 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:09:58,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:58,338 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:09:58,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608483232] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:58,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:58,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-19 14:09:58,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35685891] [2024-11-19 14:09:58,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:58,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 14:09:58,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:58,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 14:09:58,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-19 14:09:58,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 63 [2024-11-19 14:09:58,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 115 transitions, 607 flow. Second operand has 19 states, 19 states have (on average 22.05263157894737) internal successors, (419), 19 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:58,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:58,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 63 [2024-11-19 14:09:58,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:00,505 INFO L124 PetriNetUnfolderBase]: 13971/21940 cut-off events. [2024-11-19 14:10:00,505 INFO L125 PetriNetUnfolderBase]: For 47707/47907 co-relation queries the response was YES. [2024-11-19 14:10:00,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69120 conditions, 21940 events. 13971/21940 cut-off events. For 47707/47907 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 146158 event pairs, 1304 based on Foata normal form. 282/20203 useless extension candidates. Maximal degree in co-relation 55559. Up to 3636 conditions per place. [2024-11-19 14:10:00,669 INFO L140 encePairwiseOnDemand]: 47/63 looper letters, 308 selfloop transitions, 54 changer transitions 18/395 dead transitions. [2024-11-19 14:10:00,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 395 transitions, 3023 flow [2024-11-19 14:10:00,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 14:10:00,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-19 14:10:00,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 555 transitions. [2024-11-19 14:10:00,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46365914786967416 [2024-11-19 14:10:00,671 INFO L175 Difference]: Start difference. First operand has 100 places, 115 transitions, 607 flow. Second operand 19 states and 555 transitions. [2024-11-19 14:10:00,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 395 transitions, 3023 flow [2024-11-19 14:10:00,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 395 transitions, 2918 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-19 14:10:00,730 INFO L231 Difference]: Finished difference. Result has 116 places, 120 transitions, 721 flow [2024-11-19 14:10:00,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=721, PETRI_PLACES=116, PETRI_TRANSITIONS=120} [2024-11-19 14:10:00,730 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 55 predicate places. [2024-11-19 14:10:00,731 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 120 transitions, 721 flow [2024-11-19 14:10:00,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 22.05263157894737) internal successors, (419), 19 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:00,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:00,731 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:00,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 14:10:00,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:10:00,935 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 14:10:00,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:00,936 INFO L85 PathProgramCache]: Analyzing trace with hash -915116344, now seen corresponding path program 2 times [2024-11-19 14:10:00,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:00,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893122239] [2024-11-19 14:10:00,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:10:00,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:00,950 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:10:00,953 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:10:00,987 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-19 14:10:00,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:00,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893122239] [2024-11-19 14:10:00,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893122239] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:10:00,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505913828] [2024-11-19 14:10:00,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:10:00,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:10:00,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:10:00,990 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:10:00,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 14:10:01,089 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:10:01,090 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:10:01,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 14:10:01,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:10:01,128 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-19 14:10:01,128 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:10:01,167 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-19 14:10:01,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505913828] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:10:01,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:10:01,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-19 14:10:01,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495693145] [2024-11-19 14:10:01,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:10:01,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:10:01,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:01,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:10:01,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:10:01,172 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2024-11-19 14:10:01,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 120 transitions, 721 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:01,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:01,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2024-11-19 14:10:01,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:02,443 INFO L124 PetriNetUnfolderBase]: 10912/18047 cut-off events. [2024-11-19 14:10:02,443 INFO L125 PetriNetUnfolderBase]: For 27160/27378 co-relation queries the response was YES. [2024-11-19 14:10:02,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55927 conditions, 18047 events. 10912/18047 cut-off events. For 27160/27378 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 126571 event pairs, 2993 based on Foata normal form. 298/17537 useless extension candidates. Maximal degree in co-relation 45119. Up to 8714 conditions per place. [2024-11-19 14:10:02,560 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 102 selfloop transitions, 7 changer transitions 28/155 dead transitions. [2024-11-19 14:10:02,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 155 transitions, 1154 flow [2024-11-19 14:10:02,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:10:02,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:10:02,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-11-19 14:10:02,561 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.626984126984127 [2024-11-19 14:10:02,561 INFO L175 Difference]: Start difference. First operand has 116 places, 120 transitions, 721 flow. Second operand 4 states and 158 transitions. [2024-11-19 14:10:02,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 155 transitions, 1154 flow [2024-11-19 14:10:02,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 155 transitions, 1069 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-11-19 14:10:02,618 INFO L231 Difference]: Finished difference. Result has 107 places, 101 transitions, 563 flow [2024-11-19 14:10:02,618 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=563, PETRI_PLACES=107, PETRI_TRANSITIONS=101} [2024-11-19 14:10:02,618 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 46 predicate places. [2024-11-19 14:10:02,618 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 101 transitions, 563 flow [2024-11-19 14:10:02,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:02,619 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:02,619 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:02,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 14:10:02,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:10:02,819 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 14:10:02,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:02,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1373870212, now seen corresponding path program 2 times [2024-11-19 14:10:02,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:02,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026676078] [2024-11-19 14:10:02,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:10:02,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:02,840 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:10:02,840 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:10:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-19 14:10:02,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:02,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026676078] [2024-11-19 14:10:02,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026676078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:10:02,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096086355] [2024-11-19 14:10:02,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:10:02,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:10:02,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:10:02,884 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:10:02,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 14:10:02,987 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:10:02,987 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:10:02,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:10:02,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:10:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-19 14:10:03,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:10:03,088 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-19 14:10:03,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096086355] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:10:03,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:10:03,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-19 14:10:03,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124817742] [2024-11-19 14:10:03,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:10:03,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:10:03,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:03,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:10:03,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:10:03,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 63 [2024-11-19 14:10:03,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 101 transitions, 563 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:03,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:03,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 63 [2024-11-19 14:10:03,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:03,964 INFO L124 PetriNetUnfolderBase]: 6113/9943 cut-off events. [2024-11-19 14:10:03,964 INFO L125 PetriNetUnfolderBase]: For 25812/26110 co-relation queries the response was YES. [2024-11-19 14:10:03,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31475 conditions, 9943 events. 6113/9943 cut-off events. For 25812/26110 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 65035 event pairs, 2639 based on Foata normal form. 146/9489 useless extension candidates. Maximal degree in co-relation 31270. Up to 5303 conditions per place. [2024-11-19 14:10:04,015 INFO L140 encePairwiseOnDemand]: 59/63 looper letters, 88 selfloop transitions, 11 changer transitions 4/122 dead transitions. [2024-11-19 14:10:04,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 122 transitions, 880 flow [2024-11-19 14:10:04,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:10:04,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:10:04,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-11-19 14:10:04,016 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2024-11-19 14:10:04,016 INFO L175 Difference]: Start difference. First operand has 107 places, 101 transitions, 563 flow. Second operand 4 states and 152 transitions. [2024-11-19 14:10:04,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 122 transitions, 880 flow [2024-11-19 14:10:04,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 122 transitions, 856 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-19 14:10:04,048 INFO L231 Difference]: Finished difference. Result has 91 places, 98 transitions, 548 flow [2024-11-19 14:10:04,048 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=548, PETRI_PLACES=91, PETRI_TRANSITIONS=98} [2024-11-19 14:10:04,048 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 30 predicate places. [2024-11-19 14:10:04,048 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 98 transitions, 548 flow [2024-11-19 14:10:04,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:04,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:04,048 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:04,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-19 14:10:04,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-19 14:10:04,249 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 14:10:04,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:04,250 INFO L85 PathProgramCache]: Analyzing trace with hash -993462637, now seen corresponding path program 1 times [2024-11-19 14:10:04,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:04,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531816820] [2024-11-19 14:10:04,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:04,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:04,342 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 14:10:04,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:04,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531816820] [2024-11-19 14:10:04,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531816820] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:10:04,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804893806] [2024-11-19 14:10:04,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:04,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:10:04,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:10:04,346 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:10:04,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 14:10:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:04,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:10:04,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:10:04,489 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 14:10:04,489 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:10:04,529 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 14:10:04,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804893806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:10:04,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:10:04,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 14:10:04,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223970506] [2024-11-19 14:10:04,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:10:04,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:10:04,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:04,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:10:04,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:10:04,551 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2024-11-19 14:10:04,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 98 transitions, 548 flow. Second operand has 12 states, 12 states have (on average 28.75) internal successors, (345), 12 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:04,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:04,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2024-11-19 14:10:04,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:06,878 INFO L124 PetriNetUnfolderBase]: 14685/25402 cut-off events. [2024-11-19 14:10:06,878 INFO L125 PetriNetUnfolderBase]: For 52618/53105 co-relation queries the response was YES. [2024-11-19 14:10:06,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74004 conditions, 25402 events. 14685/25402 cut-off events. For 52618/53105 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 188672 event pairs, 3080 based on Foata normal form. 762/24878 useless extension candidates. Maximal degree in co-relation 73803. Up to 6009 conditions per place. [2024-11-19 14:10:07,110 INFO L140 encePairwiseOnDemand]: 59/63 looper letters, 323 selfloop transitions, 9 changer transitions 0/348 dead transitions. [2024-11-19 14:10:07,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 348 transitions, 2698 flow [2024-11-19 14:10:07,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:10:07,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:10:07,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 394 transitions. [2024-11-19 14:10:07,112 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6253968253968254 [2024-11-19 14:10:07,112 INFO L175 Difference]: Start difference. First operand has 91 places, 98 transitions, 548 flow. Second operand 10 states and 394 transitions. [2024-11-19 14:10:07,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 348 transitions, 2698 flow [2024-11-19 14:10:07,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 348 transitions, 2516 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:10:07,162 INFO L231 Difference]: Finished difference. Result has 97 places, 104 transitions, 590 flow [2024-11-19 14:10:07,162 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=590, PETRI_PLACES=97, PETRI_TRANSITIONS=104} [2024-11-19 14:10:07,163 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 36 predicate places. [2024-11-19 14:10:07,163 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 104 transitions, 590 flow [2024-11-19 14:10:07,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 28.75) internal successors, (345), 12 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:07,163 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:07,163 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:07,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-19 14:10:07,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:10:07,364 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 14:10:07,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:07,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1772001872, now seen corresponding path program 2 times [2024-11-19 14:10:07,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:07,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013726997] [2024-11-19 14:10:07,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:10:07,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:07,382 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:10:07,382 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:10:07,427 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-19 14:10:07,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:07,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013726997] [2024-11-19 14:10:07,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013726997] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:10:07,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804374661] [2024-11-19 14:10:07,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:10:07,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:10:07,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:10:07,431 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:10:07,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 14:10:07,551 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:10:07,552 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:10:07,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:10:07,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:10:07,631 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-19 14:10:07,631 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:10:07,694 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-19 14:10:07,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804374661] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:10:07,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:10:07,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-19 14:10:07,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875025721] [2024-11-19 14:10:07,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:10:07,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:10:07,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:07,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:10:07,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:10:07,705 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 63 [2024-11-19 14:10:07,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 104 transitions, 590 flow. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:07,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:07,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 63 [2024-11-19 14:10:07,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:09,818 INFO L124 PetriNetUnfolderBase]: 17893/30532 cut-off events. [2024-11-19 14:10:09,818 INFO L125 PetriNetUnfolderBase]: For 61707/62306 co-relation queries the response was YES. [2024-11-19 14:10:09,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89230 conditions, 30532 events. 17893/30532 cut-off events. For 61707/62306 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 229875 event pairs, 3080 based on Foata normal form. 254/27258 useless extension candidates. Maximal degree in co-relation 89027. Up to 12181 conditions per place. [2024-11-19 14:10:09,994 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 0 selfloop transitions, 0 changer transitions 164/164 dead transitions. [2024-11-19 14:10:09,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 164 transitions, 1202 flow [2024-11-19 14:10:09,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:10:09,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:10:09,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions. [2024-11-19 14:10:09,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-19 14:10:09,995 INFO L175 Difference]: Start difference. First operand has 97 places, 104 transitions, 590 flow. Second operand 5 states and 180 transitions. [2024-11-19 14:10:09,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 164 transitions, 1202 flow [2024-11-19 14:10:10,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 164 transitions, 1182 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-19 14:10:10,072 INFO L231 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2024-11-19 14:10:10,072 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2024-11-19 14:10:10,073 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 33 predicate places. [2024-11-19 14:10:10,073 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2024-11-19 14:10:10,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:10,075 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 25 remaining) [2024-11-19 14:10:10,076 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2024-11-19 14:10:10,076 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2024-11-19 14:10:10,076 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2024-11-19 14:10:10,076 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2024-11-19 14:10:10,076 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2024-11-19 14:10:10,076 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2024-11-19 14:10:10,076 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2024-11-19 14:10:10,076 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2024-11-19 14:10:10,076 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2024-11-19 14:10:10,076 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2024-11-19 14:10:10,076 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2024-11-19 14:10:10,076 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2024-11-19 14:10:10,076 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2024-11-19 14:10:10,077 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 25 remaining) [2024-11-19 14:10:10,077 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 25 remaining) [2024-11-19 14:10:10,077 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 25 remaining) [2024-11-19 14:10:10,077 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2024-11-19 14:10:10,077 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2024-11-19 14:10:10,077 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2024-11-19 14:10:10,077 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2024-11-19 14:10:10,077 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2024-11-19 14:10:10,077 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2024-11-19 14:10:10,077 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2024-11-19 14:10:10,077 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2024-11-19 14:10:10,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-19 14:10:10,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:10:10,283 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:10,289 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-19 14:10:10,289 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 14:10:10,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:10:10 BasicIcfg [2024-11-19 14:10:10,296 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 14:10:10,297 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 14:10:10,297 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 14:10:10,297 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 14:10:10,298 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:09:35" (3/4) ... [2024-11-19 14:10:10,299 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 14:10:10,302 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-19 14:10:10,302 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-19 14:10:10,302 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-19 14:10:10,312 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 146 nodes and edges [2024-11-19 14:10:10,315 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2024-11-19 14:10:10,315 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-19 14:10:10,315 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-19 14:10:10,422 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 14:10:10,423 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 14:10:10,423 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 14:10:10,423 INFO L158 Benchmark]: Toolchain (without parser) took 36115.40ms. Allocated memory was 176.2MB in the beginning and 7.8GB in the end (delta: 7.6GB). Free memory was 118.2MB in the beginning and 4.2GB in the end (delta: -4.1GB). Peak memory consumption was 3.5GB. Max. memory is 16.1GB. [2024-11-19 14:10:10,424 INFO L158 Benchmark]: CDTParser took 0.96ms. Allocated memory is still 176.2MB. Free memory is still 142.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 14:10:10,424 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.57ms. Allocated memory is still 176.2MB. Free memory was 117.8MB in the beginning and 104.4MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-19 14:10:10,424 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.68ms. Allocated memory is still 176.2MB. Free memory was 104.4MB in the beginning and 102.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 14:10:10,424 INFO L158 Benchmark]: Boogie Preprocessor took 62.30ms. Allocated memory is still 176.2MB. Free memory was 102.3MB in the beginning and 99.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 14:10:10,424 INFO L158 Benchmark]: RCFGBuilder took 877.02ms. Allocated memory was 176.2MB in the beginning and 253.8MB in the end (delta: 77.6MB). Free memory was 99.4MB in the beginning and 216.4MB in the end (delta: -117.1MB). Peak memory consumption was 68.5MB. Max. memory is 16.1GB. [2024-11-19 14:10:10,426 INFO L158 Benchmark]: TraceAbstraction took 34703.32ms. Allocated memory was 253.8MB in the beginning and 7.8GB in the end (delta: 7.5GB). Free memory was 215.4MB in the beginning and 4.2GB in the end (delta: -4.0GB). Peak memory consumption was 3.5GB. Max. memory is 16.1GB. [2024-11-19 14:10:10,427 INFO L158 Benchmark]: Witness Printer took 125.82ms. Allocated memory is still 7.8GB. Free memory was 4.2GB in the beginning and 4.2GB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-19 14:10:10,428 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.96ms. Allocated memory is still 176.2MB. Free memory is still 142.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.57ms. Allocated memory is still 176.2MB. Free memory was 117.8MB in the beginning and 104.4MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.68ms. Allocated memory is still 176.2MB. Free memory was 104.4MB in the beginning and 102.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.30ms. Allocated memory is still 176.2MB. Free memory was 102.3MB in the beginning and 99.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 877.02ms. Allocated memory was 176.2MB in the beginning and 253.8MB in the end (delta: 77.6MB). Free memory was 99.4MB in the beginning and 216.4MB in the end (delta: -117.1MB). Peak memory consumption was 68.5MB. Max. memory is 16.1GB. * TraceAbstraction took 34703.32ms. Allocated memory was 253.8MB in the beginning and 7.8GB in the end (delta: 7.5GB). Free memory was 215.4MB in the beginning and 4.2GB in the end (delta: -4.0GB). Peak memory consumption was 3.5GB. Max. memory is 16.1GB. * Witness Printer took 125.82ms. Allocated memory is still 7.8GB. Free memory was 4.2GB in the beginning and 4.2GB 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: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: 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: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: 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, 90 locations, 25 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: 34.6s, OverallIterations: 23, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 26.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2081 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1918 mSDsluCounter, 1334 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1290 mSDsCounter, 318 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7556 IncrementalHoareTripleChecker+Invalid, 7874 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 318 mSolverCounterUnsat, 44 mSDtfsCounter, 7556 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 873 GetRequests, 670 SyntacticMatches, 9 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1009occurred in iteration=11, InterpolantAutomatonStates: 158, 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: 0.3s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 918 NumberOfCodeBlocks, 650 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 1224 ConstructedInterpolants, 0 QuantifiedInterpolants, 3154 SizeOfPredicates, 47 NumberOfNonLiveVariables, 2451 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 50 InterpolantComputations, 11 PerfectInterpolantSequences, 761/998 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 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-19 14:10:10,457 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