./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i -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 9205365dcda04af07212d180b1c6367c5de79b6e0d2e09ec11b949fed58626f5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:40:27,778 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:40:27,878 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:40:27,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:40:27,883 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:40:27,929 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:40:27,930 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:40:27,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:40:27,931 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:40:27,935 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:40:27,936 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:40:27,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:40:27,936 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:40:27,937 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:40:27,937 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:40:27,939 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:40:27,939 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:40:27,940 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:40:27,940 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:40:27,940 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:40:27,940 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:40:27,941 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:40:27,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:40:27,941 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:40:27,941 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:40:27,942 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:40:27,942 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:40:27,942 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:40:27,942 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:40:27,942 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:40:27,942 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:40:27,943 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:40:27,943 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:40:27,943 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:40:27,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:40:27,943 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:40:27,943 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:40:27,944 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:40:27,944 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:40:27,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:40:27,949 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:40:27,950 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:40:27,950 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:40:27,950 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:40:27,954 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9205365dcda04af07212d180b1c6367c5de79b6e0d2e09ec11b949fed58626f5 [2024-10-13 16:40:28,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:40:28,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:40:28,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:40:28,401 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:40:28,405 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:40:28,406 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i [2024-10-13 16:40:29,857 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:40:30,174 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:40:30,174 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i [2024-10-13 16:40:30,198 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f61104d1/79ba32c91a4b487fbc488d2b24f74fe8/FLAG57ad84a68 [2024-10-13 16:40:30,213 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f61104d1/79ba32c91a4b487fbc488d2b24f74fe8 [2024-10-13 16:40:30,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:40:30,216 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:40:30,217 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:40:30,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:40:30,223 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:40:30,224 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,225 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a25d11a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30, skipping insertion in model container [2024-10-13 16:40:30,225 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,270 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:40:30,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:40:30,563 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:40:30,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:40:30,683 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:40:30,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30 WrapperNode [2024-10-13 16:40:30,684 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:40:30,685 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:40:30,685 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:40:30,685 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:40:30,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,735 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,756 INFO L138 Inliner]: procedures = 161, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2024-10-13 16:40:30,757 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:40:30,758 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:40:30,758 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:40:30,758 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:40:30,767 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,773 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,798 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [7, 1]. 88 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 5 writes are split as follows [4, 1]. [2024-10-13 16:40:30,798 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,799 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,804 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,807 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,808 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,808 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,811 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:40:30,811 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:40:30,811 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:40:30,812 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:40:30,812 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (1/1) ... [2024-10-13 16:40:30,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:40:30,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:40:30,847 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 16:40:30,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 16:40:30,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:40:30,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:40:30,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:40:30,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:40:30,891 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 16:40:30,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:40:30,891 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-13 16:40:30,891 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-13 16:40:30,891 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 16:40:30,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:40:30,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:40:30,893 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:40:30,989 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:40:30,990 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:40:31,111 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:40:31,111 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:40:31,169 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:40:31,170 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 16:40:31,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:40:31 BoogieIcfgContainer [2024-10-13 16:40:31,170 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:40:31,171 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:40:31,172 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:40:31,174 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:40:31,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:40:30" (1/3) ... [2024-10-13 16:40:31,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21740f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:40:31, skipping insertion in model container [2024-10-13 16:40:31,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:30" (2/3) ... [2024-10-13 16:40:31,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21740f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:40:31, skipping insertion in model container [2024-10-13 16:40:31,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:40:31" (3/3) ... [2024-10-13 16:40:31,176 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_23-idxsense_nr.i [2024-10-13 16:40:31,190 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:40:31,191 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-13 16:40:31,191 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:40:31,220 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 16:40:31,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 35 transitions, 74 flow [2024-10-13 16:40:31,273 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-10-13 16:40:31,277 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:40:31,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2024-10-13 16:40:31,279 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 35 transitions, 74 flow [2024-10-13 16:40:31,281 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 34 transitions, 71 flow [2024-10-13 16:40:31,293 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:40:31,301 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;@3f23db6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:40:31,301 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-10-13 16:40:31,303 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:40:31,303 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-13 16:40:31,303 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:40:31,304 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:31,304 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 16:40:31,304 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-13 16:40:31,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:31,308 INFO L85 PathProgramCache]: Analyzing trace with hash 207574, now seen corresponding path program 1 times [2024-10-13 16:40:31,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:31,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084230124] [2024-10-13 16:40:31,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:31,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:31,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:31,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:31,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084230124] [2024-10-13 16:40:31,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084230124] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:31,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:31,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:40:31,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122949828] [2024-10-13 16:40:31,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:31,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:40:31,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:31,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:40:31,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:40:31,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-13 16:40:31,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:31,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:31,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-13 16:40:31,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:31,800 INFO L124 PetriNetUnfolderBase]: 51/167 cut-off events. [2024-10-13 16:40:31,800 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:40:31,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 167 events. 51/167 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 620 event pairs, 50 based on Foata normal form. 1/151 useless extension candidates. Maximal degree in co-relation 275. Up to 118 conditions per place. [2024-10-13 16:40:31,802 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 17 selfloop transitions, 4 changer transitions 0/33 dead transitions. [2024-10-13 16:40:31,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 111 flow [2024-10-13 16:40:31,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:40:31,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:40:31,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-10-13 16:40:31,821 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-10-13 16:40:31,822 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 71 flow. Second operand 4 states and 74 transitions. [2024-10-13 16:40:31,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 111 flow [2024-10-13 16:40:31,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 33 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:40:31,828 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 76 flow [2024-10-13 16:40:31,830 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2024-10-13 16:40:31,834 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2024-10-13 16:40:31,834 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 76 flow [2024-10-13 16:40:31,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:31,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:31,835 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-13 16:40:31,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:40:31,835 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-13 16:40:31,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:31,836 INFO L85 PathProgramCache]: Analyzing trace with hash 6434990, now seen corresponding path program 1 times [2024-10-13 16:40:31,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:31,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368175897] [2024-10-13 16:40:31,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:31,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:31,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:31,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:31,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368175897] [2024-10-13 16:40:31,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368175897] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:31,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:31,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:40:31,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068260420] [2024-10-13 16:40:31,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:31,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:40:31,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:31,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:40:31,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:40:31,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-13 16:40:31,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:31,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:31,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-13 16:40:31,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:32,003 INFO L124 PetriNetUnfolderBase]: 51/170 cut-off events. [2024-10-13 16:40:32,004 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 16:40:32,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 170 events. 51/170 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 622 event pairs, 50 based on Foata normal form. 1/155 useless extension candidates. Maximal degree in co-relation 279. Up to 122 conditions per place. [2024-10-13 16:40:32,006 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 20 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2024-10-13 16:40:32,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 130 flow [2024-10-13 16:40:32,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:40:32,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:40:32,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-10-13 16:40:32,007 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-10-13 16:40:32,007 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 76 flow. Second operand 4 states and 77 transitions. [2024-10-13 16:40:32,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 130 flow [2024-10-13 16:40:32,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 118 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:40:32,011 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 90 flow [2024-10-13 16:40:32,011 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2024-10-13 16:40:32,012 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2024-10-13 16:40:32,012 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 90 flow [2024-10-13 16:40:32,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:32,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:32,013 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-13 16:40:32,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:40:32,014 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-13 16:40:32,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:32,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1568532559, now seen corresponding path program 1 times [2024-10-13 16:40:32,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:32,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416543266] [2024-10-13 16:40:32,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:32,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:32,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:40:32,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:32,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416543266] [2024-10-13 16:40:32,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416543266] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:32,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:32,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:40:32,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745425381] [2024-10-13 16:40:32,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:32,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:40:32,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:32,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:40:32,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:40:32,087 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-13 16:40:32,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:32,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:32,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-13 16:40:32,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:32,180 INFO L124 PetriNetUnfolderBase]: 51/169 cut-off events. [2024-10-13 16:40:32,181 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 16:40:32,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 169 events. 51/169 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 617 event pairs, 50 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 289. Up to 121 conditions per place. [2024-10-13 16:40:32,182 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 18 selfloop transitions, 4 changer transitions 0/34 dead transitions. [2024-10-13 16:40:32,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 130 flow [2024-10-13 16:40:32,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:40:32,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:40:32,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-10-13 16:40:32,186 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-10-13 16:40:32,186 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 90 flow. Second operand 3 states and 60 transitions. [2024-10-13 16:40:32,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 130 flow [2024-10-13 16:40:32,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 128 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:40:32,188 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 92 flow [2024-10-13 16:40:32,189 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-10-13 16:40:32,189 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2024-10-13 16:40:32,190 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 92 flow [2024-10-13 16:40:32,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:32,191 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:32,191 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:32,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:40:32,191 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-13 16:40:32,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:32,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1131268833, now seen corresponding path program 1 times [2024-10-13 16:40:32,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:32,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574054548] [2024-10-13 16:40:32,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:32,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:32,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:32,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:32,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574054548] [2024-10-13 16:40:32,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574054548] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:40:32,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078389568] [2024-10-13 16:40:32,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:32,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:32,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:40:32,288 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:40:32,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:40:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:32,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:40:32,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:40:32,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:32,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:40:32,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:32,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078389568] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:40:32,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:40:32,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-13 16:40:32,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890107437] [2024-10-13 16:40:32,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:40:32,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 16:40:32,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:32,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 16:40:32,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:40:32,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-13 16:40:32,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 92 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 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) [2024-10-13 16:40:32,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:32,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-13 16:40:32,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:32,531 INFO L124 PetriNetUnfolderBase]: 51/173 cut-off events. [2024-10-13 16:40:32,533 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-13 16:40:32,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 173 events. 51/173 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 614 event pairs, 50 based on Foata normal form. 2/160 useless extension candidates. Maximal degree in co-relation 286. Up to 119 conditions per place. [2024-10-13 16:40:32,534 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 18 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2024-10-13 16:40:32,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 37 transitions, 160 flow [2024-10-13 16:40:32,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:40:32,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:40:32,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-10-13 16:40:32,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4816326530612245 [2024-10-13 16:40:32,537 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 92 flow. Second operand 7 states and 118 transitions. [2024-10-13 16:40:32,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 37 transitions, 160 flow [2024-10-13 16:40:32,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 37 transitions, 146 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:40:32,539 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 121 flow [2024-10-13 16:40:32,539 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=121, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-10-13 16:40:32,540 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2024-10-13 16:40:32,541 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 121 flow [2024-10-13 16:40:32,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 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) [2024-10-13 16:40:32,541 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:32,541 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:32,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 16:40:32,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:32,746 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-13 16:40:32,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:32,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1663528961, now seen corresponding path program 2 times [2024-10-13 16:40:32,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:32,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718691758] [2024-10-13 16:40:32,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:32,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:32,890 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:32,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:32,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718691758] [2024-10-13 16:40:32,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718691758] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:40:32,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286833510] [2024-10-13 16:40:32,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:40:32,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:32,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:40:32,896 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:40:32,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:40:32,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:40:32,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:40:32,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:40:32,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:40:32,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-10-13 16:40:33,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 16:40:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 16:40:33,059 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:40:33,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286833510] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:33,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:40:33,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 10 [2024-10-13 16:40:33,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953294379] [2024-10-13 16:40:33,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:33,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:40:33,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:33,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:40:33,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-13 16:40:33,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-13 16:40:33,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:33,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:33,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-13 16:40:33,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:33,205 INFO L124 PetriNetUnfolderBase]: 80/230 cut-off events. [2024-10-13 16:40:33,208 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-13 16:40:33,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 230 events. 80/230 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 896 event pairs, 29 based on Foata normal form. 11/212 useless extension candidates. Maximal degree in co-relation 399. Up to 118 conditions per place. [2024-10-13 16:40:33,210 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 40 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-10-13 16:40:33,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 255 flow [2024-10-13 16:40:33,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:40:33,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:40:33,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-10-13 16:40:33,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6228571428571429 [2024-10-13 16:40:33,215 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 121 flow. Second operand 5 states and 109 transitions. [2024-10-13 16:40:33,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 255 flow [2024-10-13 16:40:33,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 241 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-10-13 16:40:33,217 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 159 flow [2024-10-13 16:40:33,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=159, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2024-10-13 16:40:33,217 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2024-10-13 16:40:33,217 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 159 flow [2024-10-13 16:40:33,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:33,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:33,218 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:33,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 16:40:33,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:33,419 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-13 16:40:33,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:33,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1663138778, now seen corresponding path program 1 times [2024-10-13 16:40:33,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:33,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565291935] [2024-10-13 16:40:33,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:33,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:33,619 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:33,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:33,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565291935] [2024-10-13 16:40:33,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565291935] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:40:33,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514824601] [2024-10-13 16:40:33,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:33,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:33,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:40:33,626 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:40:33,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:40:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:33,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 16:40:33,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:40:33,709 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:33,709 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:40:33,800 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:33,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514824601] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:40:33,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:40:33,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-13 16:40:33,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288462528] [2024-10-13 16:40:33,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:40:33,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 16:40:33,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:33,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 16:40:33,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-10-13 16:40:33,823 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-13 16:40:33,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 159 flow. Second operand has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:33,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:33,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-13 16:40:33,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:34,008 INFO L124 PetriNetUnfolderBase]: 57/207 cut-off events. [2024-10-13 16:40:34,008 INFO L125 PetriNetUnfolderBase]: For 88/98 co-relation queries the response was YES. [2024-10-13 16:40:34,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 207 events. 57/207 cut-off events. For 88/98 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 768 event pairs, 42 based on Foata normal form. 7/201 useless extension candidates. Maximal degree in co-relation 390. Up to 132 conditions per place. [2024-10-13 16:40:34,010 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 23 selfloop transitions, 15 changer transitions 0/51 dead transitions. [2024-10-13 16:40:34,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 51 transitions, 283 flow [2024-10-13 16:40:34,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 16:40:34,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 16:40:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 232 transitions. [2024-10-13 16:40:34,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4419047619047619 [2024-10-13 16:40:34,012 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 159 flow. Second operand 15 states and 232 transitions. [2024-10-13 16:40:34,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 51 transitions, 283 flow [2024-10-13 16:40:34,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 51 transitions, 283 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:40:34,014 INFO L231 Difference]: Finished difference. Result has 69 places, 51 transitions, 256 flow [2024-10-13 16:40:34,015 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=256, PETRI_PLACES=69, PETRI_TRANSITIONS=51} [2024-10-13 16:40:34,015 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 32 predicate places. [2024-10-13 16:40:34,015 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 51 transitions, 256 flow [2024-10-13 16:40:34,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:34,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:34,016 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:34,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 16:40:34,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:34,217 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-13 16:40:34,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:34,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1428308454, now seen corresponding path program 2 times [2024-10-13 16:40:34,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:34,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846702485] [2024-10-13 16:40:34,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:34,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:34,450 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:34,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:34,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846702485] [2024-10-13 16:40:34,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846702485] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:40:34,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848418030] [2024-10-13 16:40:34,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:40:34,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:34,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:40:34,453 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:40:34,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 16:40:34,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:40:34,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:40:34,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:40:34,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:40:34,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-10-13 16:40:34,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 16:40:34,596 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-13 16:40:34,596 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:40:34,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848418030] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:34,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:40:34,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [16] total 18 [2024-10-13 16:40:34,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733193511] [2024-10-13 16:40:34,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:34,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:40:34,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:34,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:40:34,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2024-10-13 16:40:34,604 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-13 16:40:34,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 51 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:34,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:34,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-13 16:40:34,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:34,711 INFO L124 PetriNetUnfolderBase]: 69/225 cut-off events. [2024-10-13 16:40:34,712 INFO L125 PetriNetUnfolderBase]: For 129/140 co-relation queries the response was YES. [2024-10-13 16:40:34,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544 conditions, 225 events. 69/225 cut-off events. For 129/140 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 839 event pairs, 26 based on Foata normal form. 9/226 useless extension candidates. Maximal degree in co-relation 463. Up to 119 conditions per place. [2024-10-13 16:40:34,713 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 44 selfloop transitions, 8 changer transitions 0/63 dead transitions. [2024-10-13 16:40:34,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 63 transitions, 394 flow [2024-10-13 16:40:34,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:40:34,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:40:34,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-10-13 16:40:34,714 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5942857142857143 [2024-10-13 16:40:34,715 INFO L175 Difference]: Start difference. First operand has 69 places, 51 transitions, 256 flow. Second operand 5 states and 104 transitions. [2024-10-13 16:40:34,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 63 transitions, 394 flow [2024-10-13 16:40:34,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 376 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-13 16:40:34,719 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 294 flow [2024-10-13 16:40:34,719 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2024-10-13 16:40:34,720 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 36 predicate places. [2024-10-13 16:40:34,720 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 294 flow [2024-10-13 16:40:34,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:34,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:34,720 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:34,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-13 16:40:34,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:34,921 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-13 16:40:34,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:34,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1315793218, now seen corresponding path program 1 times [2024-10-13 16:40:34,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:34,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504646312] [2024-10-13 16:40:34,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:34,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:35,138 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:35,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:35,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504646312] [2024-10-13 16:40:35,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504646312] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:40:35,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669288577] [2024-10-13 16:40:35,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:35,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:35,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:40:35,141 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:40:35,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 16:40:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:35,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 16:40:35,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:40:35,245 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:35,246 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:40:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:35,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669288577] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:40:35,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:40:35,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 20 [2024-10-13 16:40:35,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594451323] [2024-10-13 16:40:35,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:40:35,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-13 16:40:35,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:35,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-13 16:40:35,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2024-10-13 16:40:35,445 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-13 16:40:35,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 294 flow. Second operand has 21 states, 21 states have (on average 14.19047619047619) internal successors, (298), 21 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:35,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:35,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-13 16:40:35,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:35,679 INFO L124 PetriNetUnfolderBase]: 59/225 cut-off events. [2024-10-13 16:40:35,679 INFO L125 PetriNetUnfolderBase]: For 246/260 co-relation queries the response was YES. [2024-10-13 16:40:35,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 225 events. 59/225 cut-off events. For 246/260 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 817 event pairs, 41 based on Foata normal form. 6/224 useless extension candidates. Maximal degree in co-relation 505. Up to 137 conditions per place. [2024-10-13 16:40:35,684 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 26 selfloop transitions, 21 changer transitions 0/61 dead transitions. [2024-10-13 16:40:35,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 61 transitions, 442 flow [2024-10-13 16:40:35,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 16:40:35,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 16:40:35,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 315 transitions. [2024-10-13 16:40:35,686 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-10-13 16:40:35,686 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 294 flow. Second operand 21 states and 315 transitions. [2024-10-13 16:40:35,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 61 transitions, 442 flow [2024-10-13 16:40:35,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 61 transitions, 440 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-13 16:40:35,689 INFO L231 Difference]: Finished difference. Result has 96 places, 61 transitions, 403 flow [2024-10-13 16:40:35,691 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=403, PETRI_PLACES=96, PETRI_TRANSITIONS=61} [2024-10-13 16:40:35,692 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 59 predicate places. [2024-10-13 16:40:35,692 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 61 transitions, 403 flow [2024-10-13 16:40:35,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 14.19047619047619) internal successors, (298), 21 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:35,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:35,693 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:35,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 16:40:35,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:40:35,894 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-13 16:40:35,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:35,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1557370427, now seen corresponding path program 2 times [2024-10-13 16:40:35,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:35,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582764608] [2024-10-13 16:40:35,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:35,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-13 16:40:36,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:36,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582764608] [2024-10-13 16:40:36,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582764608] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:36,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:36,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:40:36,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585101131] [2024-10-13 16:40:36,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:36,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:40:36,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:36,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:40:36,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:40:36,013 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-13 16:40:36,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 61 transitions, 403 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:36,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:36,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-13 16:40:36,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:36,124 INFO L124 PetriNetUnfolderBase]: 65/219 cut-off events. [2024-10-13 16:40:36,125 INFO L125 PetriNetUnfolderBase]: For 323/328 co-relation queries the response was YES. [2024-10-13 16:40:36,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 629 conditions, 219 events. 65/219 cut-off events. For 323/328 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 740 event pairs, 21 based on Foata normal form. 27/243 useless extension candidates. Maximal degree in co-relation 554. Up to 103 conditions per place. [2024-10-13 16:40:36,132 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 54 selfloop transitions, 8 changer transitions 7/80 dead transitions. [2024-10-13 16:40:36,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 80 transitions, 591 flow [2024-10-13 16:40:36,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:40:36,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:40:36,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-10-13 16:40:36,133 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6457142857142857 [2024-10-13 16:40:36,133 INFO L175 Difference]: Start difference. First operand has 96 places, 61 transitions, 403 flow. Second operand 5 states and 113 transitions. [2024-10-13 16:40:36,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 80 transitions, 591 flow [2024-10-13 16:40:36,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 80 transitions, 535 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-10-13 16:40:36,136 INFO L231 Difference]: Finished difference. Result has 89 places, 61 transitions, 384 flow [2024-10-13 16:40:36,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=89, PETRI_TRANSITIONS=61} [2024-10-13 16:40:36,142 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 52 predicate places. [2024-10-13 16:40:36,143 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 61 transitions, 384 flow [2024-10-13 16:40:36,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:36,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:36,143 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:36,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 16:40:36,143 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-13 16:40:36,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:36,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1545274724, now seen corresponding path program 1 times [2024-10-13 16:40:36,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:36,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105633526] [2024-10-13 16:40:36,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:36,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:36,303 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-13 16:40:36,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:36,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105633526] [2024-10-13 16:40:36,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105633526] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:36,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:36,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:40:36,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673687575] [2024-10-13 16:40:36,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:36,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:40:36,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:36,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:40:36,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:40:36,311 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-13 16:40:36,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 61 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:36,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:36,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-13 16:40:36,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:36,422 INFO L124 PetriNetUnfolderBase]: 46/191 cut-off events. [2024-10-13 16:40:36,422 INFO L125 PetriNetUnfolderBase]: For 317/319 co-relation queries the response was YES. [2024-10-13 16:40:36,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 191 events. 46/191 cut-off events. For 317/319 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 648 event pairs, 15 based on Foata normal form. 14/198 useless extension candidates. Maximal degree in co-relation 517. Up to 69 conditions per place. [2024-10-13 16:40:36,426 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 48 selfloop transitions, 7 changer transitions 0/65 dead transitions. [2024-10-13 16:40:36,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 65 transitions, 500 flow [2024-10-13 16:40:36,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:40:36,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:40:36,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-10-13 16:40:36,431 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-13 16:40:36,431 INFO L175 Difference]: Start difference. First operand has 89 places, 61 transitions, 384 flow. Second operand 4 states and 84 transitions. [2024-10-13 16:40:36,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 65 transitions, 500 flow [2024-10-13 16:40:36,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 65 transitions, 467 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-10-13 16:40:36,433 INFO L231 Difference]: Finished difference. Result has 83 places, 58 transitions, 350 flow [2024-10-13 16:40:36,434 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=350, PETRI_PLACES=83, PETRI_TRANSITIONS=58} [2024-10-13 16:40:36,434 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 46 predicate places. [2024-10-13 16:40:36,437 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 58 transitions, 350 flow [2024-10-13 16:40:36,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:36,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:36,437 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:36,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 16:40:36,438 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-13 16:40:36,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:36,438 INFO L85 PathProgramCache]: Analyzing trace with hash 989088603, now seen corresponding path program 1 times [2024-10-13 16:40:36,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:36,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962645106] [2024-10-13 16:40:36,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:36,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:36,645 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-13 16:40:36,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:36,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962645106] [2024-10-13 16:40:36,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962645106] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:36,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:36,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:40:36,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158736160] [2024-10-13 16:40:36,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:36,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:40:36,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:36,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:40:36,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:40:36,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-13 16:40:36,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 58 transitions, 350 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:36,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:36,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-13 16:40:36,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:36,745 INFO L124 PetriNetUnfolderBase]: 49/186 cut-off events. [2024-10-13 16:40:36,745 INFO L125 PetriNetUnfolderBase]: For 257/259 co-relation queries the response was YES. [2024-10-13 16:40:36,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544 conditions, 186 events. 49/186 cut-off events. For 257/259 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 582 event pairs, 23 based on Foata normal form. 14/200 useless extension candidates. Maximal degree in co-relation 476. Up to 77 conditions per place. [2024-10-13 16:40:36,746 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 50 selfloop transitions, 7 changer transitions 5/70 dead transitions. [2024-10-13 16:40:36,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 70 transitions, 513 flow [2024-10-13 16:40:36,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:40:36,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:40:36,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-10-13 16:40:36,747 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-13 16:40:36,747 INFO L175 Difference]: Start difference. First operand has 83 places, 58 transitions, 350 flow. Second operand 5 states and 105 transitions. [2024-10-13 16:40:36,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 70 transitions, 513 flow [2024-10-13 16:40:36,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 70 transitions, 499 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:40:36,753 INFO L231 Difference]: Finished difference. Result has 87 places, 59 transitions, 370 flow [2024-10-13 16:40:36,753 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=370, PETRI_PLACES=87, PETRI_TRANSITIONS=59} [2024-10-13 16:40:36,757 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 50 predicate places. [2024-10-13 16:40:36,757 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 59 transitions, 370 flow [2024-10-13 16:40:36,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:36,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:36,758 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:36,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 16:40:36,758 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-13 16:40:36,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:36,758 INFO L85 PathProgramCache]: Analyzing trace with hash -506842787, now seen corresponding path program 1 times [2024-10-13 16:40:36,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:36,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738233784] [2024-10-13 16:40:36,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:36,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:36,957 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-13 16:40:36,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:36,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738233784] [2024-10-13 16:40:36,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738233784] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:36,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:36,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:40:36,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214479394] [2024-10-13 16:40:36,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:36,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:40:36,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:36,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:40:36,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:40:36,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-10-13 16:40:36,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 59 transitions, 370 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:36,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:36,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-10-13 16:40:36,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:37,077 INFO L124 PetriNetUnfolderBase]: 60/198 cut-off events. [2024-10-13 16:40:37,078 INFO L125 PetriNetUnfolderBase]: For 260/262 co-relation queries the response was YES. [2024-10-13 16:40:37,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 198 events. 60/198 cut-off events. For 260/262 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 629 event pairs, 24 based on Foata normal form. 8/205 useless extension candidates. Maximal degree in co-relation 563. Up to 99 conditions per place. [2024-10-13 16:40:37,079 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 51 selfloop transitions, 11 changer transitions 3/70 dead transitions. [2024-10-13 16:40:37,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 70 transitions, 527 flow [2024-10-13 16:40:37,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:40:37,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:40:37,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-10-13 16:40:37,080 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-10-13 16:40:37,080 INFO L175 Difference]: Start difference. First operand has 87 places, 59 transitions, 370 flow. Second operand 6 states and 99 transitions. [2024-10-13 16:40:37,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 70 transitions, 527 flow [2024-10-13 16:40:37,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 70 transitions, 516 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-13 16:40:37,083 INFO L231 Difference]: Finished difference. Result has 86 places, 57 transitions, 369 flow [2024-10-13 16:40:37,083 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=369, PETRI_PLACES=86, PETRI_TRANSITIONS=57} [2024-10-13 16:40:37,084 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 49 predicate places. [2024-10-13 16:40:37,084 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 57 transitions, 369 flow [2024-10-13 16:40:37,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:37,084 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:37,084 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:37,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 16:40:37,085 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-13 16:40:37,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:37,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1982633493, now seen corresponding path program 1 times [2024-10-13 16:40:37,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:37,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427711215] [2024-10-13 16:40:37,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:37,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:37,393 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-13 16:40:37,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:37,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427711215] [2024-10-13 16:40:37,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427711215] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:37,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:37,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:40:37,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464804218] [2024-10-13 16:40:37,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:37,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:40:37,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:37,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:40:37,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:40:37,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-10-13 16:40:37,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 57 transitions, 369 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:37,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:37,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-10-13 16:40:37,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:37,530 INFO L124 PetriNetUnfolderBase]: 45/166 cut-off events. [2024-10-13 16:40:37,530 INFO L125 PetriNetUnfolderBase]: For 337/339 co-relation queries the response was YES. [2024-10-13 16:40:37,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 166 events. 45/166 cut-off events. For 337/339 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 480 event pairs, 12 based on Foata normal form. 5/171 useless extension candidates. Maximal degree in co-relation 473. Up to 47 conditions per place. [2024-10-13 16:40:37,536 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 36 selfloop transitions, 3 changer transitions 24/69 dead transitions. [2024-10-13 16:40:37,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 69 transitions, 520 flow [2024-10-13 16:40:37,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:40:37,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:40:37,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-10-13 16:40:37,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4775510204081633 [2024-10-13 16:40:37,537 INFO L175 Difference]: Start difference. First operand has 86 places, 57 transitions, 369 flow. Second operand 7 states and 117 transitions. [2024-10-13 16:40:37,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 69 transitions, 520 flow [2024-10-13 16:40:37,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 69 transitions, 507 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 16:40:37,543 INFO L231 Difference]: Finished difference. Result has 86 places, 43 transitions, 270 flow [2024-10-13 16:40:37,543 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=270, PETRI_PLACES=86, PETRI_TRANSITIONS=43} [2024-10-13 16:40:37,544 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 49 predicate places. [2024-10-13 16:40:37,544 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 43 transitions, 270 flow [2024-10-13 16:40:37,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:37,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:37,544 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:37,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 16:40:37,544 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-13 16:40:37,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:37,544 INFO L85 PathProgramCache]: Analyzing trace with hash 116993513, now seen corresponding path program 1 times [2024-10-13 16:40:37,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:37,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918596836] [2024-10-13 16:40:37,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:37,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-13 16:40:37,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:37,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918596836] [2024-10-13 16:40:37,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918596836] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:37,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:37,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:40:37,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941334524] [2024-10-13 16:40:37,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:37,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:40:37,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:37,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:40:37,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:40:37,882 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-10-13 16:40:37,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 43 transitions, 270 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:37,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:37,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-10-13 16:40:37,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:37,942 INFO L124 PetriNetUnfolderBase]: 13/80 cut-off events. [2024-10-13 16:40:37,942 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-10-13 16:40:37,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 80 events. 13/80 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 6 based on Foata normal form. 3/83 useless extension candidates. Maximal degree in co-relation 242. Up to 43 conditions per place. [2024-10-13 16:40:37,943 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2024-10-13 16:40:37,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 46 transitions, 352 flow [2024-10-13 16:40:37,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:40:37,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:40:37,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-10-13 16:40:37,944 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-10-13 16:40:37,944 INFO L175 Difference]: Start difference. First operand has 86 places, 43 transitions, 270 flow. Second operand 6 states and 88 transitions. [2024-10-13 16:40:37,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 46 transitions, 352 flow [2024-10-13 16:40:37,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 46 transitions, 326 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-10-13 16:40:37,946 INFO L231 Difference]: Finished difference. Result has 67 places, 0 transitions, 0 flow [2024-10-13 16:40:37,946 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=67, PETRI_TRANSITIONS=0} [2024-10-13 16:40:37,946 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 30 predicate places. [2024-10-13 16:40:37,947 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 0 transitions, 0 flow [2024-10-13 16:40:37,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:37,949 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 11 remaining) [2024-10-13 16:40:37,949 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-10-13 16:40:37,950 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-10-13 16:40:37,950 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-10-13 16:40:37,950 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2024-10-13 16:40:37,950 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2024-10-13 16:40:37,950 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 11 remaining) [2024-10-13 16:40:37,950 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-10-13 16:40:37,950 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-10-13 16:40:37,951 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-10-13 16:40:37,951 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-10-13 16:40:37,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 16:40:37,951 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:37,955 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 16:40:37,956 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 16:40:37,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 04:40:37 BasicIcfg [2024-10-13 16:40:37,960 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 16:40:37,960 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 16:40:37,960 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 16:40:37,960 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 16:40:37,961 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:40:31" (3/4) ... [2024-10-13 16:40:37,962 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 16:40:37,964 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-10-13 16:40:37,967 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2024-10-13 16:40:37,967 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-10-13 16:40:37,967 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-13 16:40:38,029 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 16:40:38,030 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 16:40:38,030 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 16:40:38,030 INFO L158 Benchmark]: Toolchain (without parser) took 7814.28ms. Allocated memory was 176.2MB in the beginning and 318.8MB in the end (delta: 142.6MB). Free memory was 105.0MB in the beginning and 261.2MB in the end (delta: -156.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:40:38,031 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 176.2MB. Free memory is still 130.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:40:38,031 INFO L158 Benchmark]: CACSL2BoogieTranslator took 467.10ms. Allocated memory is still 176.2MB. Free memory was 104.8MB in the beginning and 142.6MB in the end (delta: -37.8MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2024-10-13 16:40:38,031 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.99ms. Allocated memory is still 176.2MB. Free memory was 142.6MB in the beginning and 140.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:40:38,031 INFO L158 Benchmark]: Boogie Preprocessor took 53.21ms. Allocated memory is still 176.2MB. Free memory was 140.6MB in the beginning and 138.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:40:38,031 INFO L158 Benchmark]: RCFGBuilder took 358.76ms. Allocated memory is still 176.2MB. Free memory was 138.3MB in the beginning and 118.2MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-13 16:40:38,032 INFO L158 Benchmark]: TraceAbstraction took 6788.25ms. Allocated memory was 176.2MB in the beginning and 318.8MB in the end (delta: 142.6MB). Free memory was 117.5MB in the beginning and 265.4MB in the end (delta: -147.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:40:38,032 INFO L158 Benchmark]: Witness Printer took 69.81ms. Allocated memory is still 318.8MB. Free memory was 265.4MB in the beginning and 261.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 16:40:38,033 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 176.2MB. Free memory is still 130.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 467.10ms. Allocated memory is still 176.2MB. Free memory was 104.8MB in the beginning and 142.6MB in the end (delta: -37.8MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.99ms. Allocated memory is still 176.2MB. Free memory was 142.6MB in the beginning and 140.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.21ms. Allocated memory is still 176.2MB. Free memory was 140.6MB in the beginning and 138.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 358.76ms. Allocated memory is still 176.2MB. Free memory was 138.3MB in the beginning and 118.2MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 6788.25ms. Allocated memory was 176.2MB in the beginning and 318.8MB in the end (delta: 142.6MB). Free memory was 117.5MB in the beginning and 265.4MB in the end (delta: -147.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 69.81ms. Allocated memory is still 318.8MB. Free memory was 265.4MB in the beginning and 261.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: 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 3 procedures, 46 locations, 11 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: 6.7s, OverallIterations: 14, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 287 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 242 mSDsluCounter, 86 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 77 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1283 IncrementalHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 9 mSDtfsCounter, 1283 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 130 SyntacticMatches, 11 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=403occurred in iteration=8, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 477 NumberOfCodeBlocks, 447 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 510 ConstructedInterpolants, 2 QuantifiedInterpolants, 2644 SizeOfPredicates, 19 NumberOfNonLiveVariables, 411 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 22 InterpolantComputations, 11 PerfectInterpolantSequences, 955/1286 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-13 16:40:38,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE