./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-ext/09_fmaxsym.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/09_fmaxsym.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 2ce2a912f26c96a7a9e9698d6a341c03f1dcacccb179d06c2396dd9f137bcbd1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 13:48:32,753 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 13:48:32,828 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 13:48:32,833 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 13:48:32,834 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 13:48:32,870 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 13:48:32,871 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 13:48:32,871 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 13:48:32,872 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 13:48:32,873 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 13:48:32,874 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 13:48:32,874 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 13:48:32,875 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 13:48:32,875 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 13:48:32,877 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 13:48:32,877 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 13:48:32,878 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 13:48:32,878 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 13:48:32,878 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 13:48:32,879 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 13:48:32,879 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 13:48:32,883 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 13:48:32,883 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 13:48:32,883 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 13:48:32,884 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 13:48:32,884 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 13:48:32,884 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 13:48:32,884 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 13:48:32,885 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 13:48:32,885 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 13:48:32,885 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 13:48:32,885 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 13:48:32,886 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 13:48:32,886 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 13:48:32,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:48:32,886 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 13:48:32,887 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 13:48:32,887 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 13:48:32,887 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 13:48:32,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 13:48:32,887 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 13:48:32,888 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 13:48:32,888 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 13:48:32,889 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 13:48:32,889 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ce2a912f26c96a7a9e9698d6a341c03f1dcacccb179d06c2396dd9f137bcbd1 [2024-11-19 13:48:33,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 13:48:33,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 13:48:33,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 13:48:33,171 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 13:48:33,171 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 13:48:33,173 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/09_fmaxsym.i [2024-11-19 13:48:34,616 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 13:48:34,845 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 13:48:34,846 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym.i [2024-11-19 13:48:34,858 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96609335a/f3dff4d7b6e543c7b99688c7ead17dda/FLAGc7f7db6ca [2024-11-19 13:48:35,192 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96609335a/f3dff4d7b6e543c7b99688c7ead17dda [2024-11-19 13:48:35,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 13:48:35,196 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 13:48:35,197 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 13:48:35,197 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 13:48:35,203 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 13:48:35,203 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:48:35" (1/1) ... [2024-11-19 13:48:35,204 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d821b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:35, skipping insertion in model container [2024-11-19 13:48:35,204 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:48:35" (1/1) ... [2024-11-19 13:48:35,243 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 13:48:35,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:48:35,627 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 13:48:35,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:48:35,731 INFO L204 MainTranslator]: Completed translation [2024-11-19 13:48:35,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:35 WrapperNode [2024-11-19 13:48:35,733 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 13:48:35,734 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 13:48:35,734 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 13:48:35,734 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 13:48:35,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:35" (1/1) ... [2024-11-19 13:48:35,757 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:35" (1/1) ... [2024-11-19 13:48:35,787 INFO L138 Inliner]: procedures = 164, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 99 [2024-11-19 13:48:35,790 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 13:48:35,791 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 13:48:35,791 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 13:48:35,791 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 13:48:35,801 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:35" (1/1) ... [2024-11-19 13:48:35,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:35" (1/1) ... [2024-11-19 13:48:35,804 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:35" (1/1) ... [2024-11-19 13:48:35,829 INFO L175 MemorySlicer]: Split 15 memory accesses to 3 slices as follows [2, 5, 8]. 53 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 6]. The 1 writes are split as follows [0, 0, 1]. [2024-11-19 13:48:35,831 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:35" (1/1) ... [2024-11-19 13:48:35,831 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:35" (1/1) ... [2024-11-19 13:48:35,839 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:35" (1/1) ... [2024-11-19 13:48:35,844 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:35" (1/1) ... [2024-11-19 13:48:35,846 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:35" (1/1) ... [2024-11-19 13:48:35,850 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:35" (1/1) ... [2024-11-19 13:48:35,853 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 13:48:35,854 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 13:48:35,854 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 13:48:35,854 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 13:48:35,856 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:35" (1/1) ... [2024-11-19 13:48:35,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:48:35,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:35,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 13:48:35,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 13:48:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 13:48:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 13:48:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 13:48:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-19 13:48:35,964 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-19 13:48:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 13:48:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 13:48:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 13:48:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 13:48:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 13:48:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 13:48:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 13:48:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 13:48:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 13:48:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 13:48:35,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 13:48:35,969 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 13:48:36,124 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 13:48:36,127 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 13:48:36,353 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 13:48:36,353 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 13:48:36,510 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 13:48:36,511 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 13:48:36,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:48:36 BoogieIcfgContainer [2024-11-19 13:48:36,511 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 13:48:36,513 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 13:48:36,514 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 13:48:36,517 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 13:48:36,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:48:35" (1/3) ... [2024-11-19 13:48:36,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc2628e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:48:36, skipping insertion in model container [2024-11-19 13:48:36,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:35" (2/3) ... [2024-11-19 13:48:36,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc2628e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:48:36, skipping insertion in model container [2024-11-19 13:48:36,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:48:36" (3/3) ... [2024-11-19 13:48:36,523 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym.i [2024-11-19 13:48:36,542 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 13:48:36,543 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-19 13:48:36,543 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 13:48:36,591 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 13:48:36,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 33 transitions, 70 flow [2024-11-19 13:48:36,658 INFO L124 PetriNetUnfolderBase]: 3/35 cut-off events. [2024-11-19 13:48:36,658 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:48:36,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 35 events. 3/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 45 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-11-19 13:48:36,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 33 transitions, 70 flow [2024-11-19 13:48:36,666 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 33 transitions, 70 flow [2024-11-19 13:48:36,680 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:48:36,689 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;@42a7010, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:48:36,689 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-19 13:48:36,692 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:48:36,692 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 13:48:36,692 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:48:36,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:36,696 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 13:48:36,696 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 13:48:36,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:36,702 INFO L85 PathProgramCache]: Analyzing trace with hash 302535, now seen corresponding path program 1 times [2024-11-19 13:48:36,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:36,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946950232] [2024-11-19 13:48:36,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:36,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:37,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:37,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:37,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946950232] [2024-11-19 13:48:37,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946950232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:37,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:37,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:37,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291201284] [2024-11-19 13:48:37,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:37,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:48:37,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:37,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:48:37,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:48:37,070 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-11-19 13:48:37,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:37,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:37,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-11-19 13:48:37,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:37,191 INFO L124 PetriNetUnfolderBase]: 24/88 cut-off events. [2024-11-19 13:48:37,191 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:48:37,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 88 events. 24/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 185 event pairs, 20 based on Foata normal form. 4/81 useless extension candidates. Maximal degree in co-relation 127. Up to 64 conditions per place. [2024-11-19 13:48:37,194 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 19 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2024-11-19 13:48:37,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 114 flow [2024-11-19 13:48:37,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:48:37,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:48:37,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-11-19 13:48:37,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5378787878787878 [2024-11-19 13:48:37,209 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 70 flow. Second operand 4 states and 71 transitions. [2024-11-19 13:48:37,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 114 flow [2024-11-19 13:48:37,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 114 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:48:37,215 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 90 flow [2024-11-19 13:48:37,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2024-11-19 13:48:37,225 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2024-11-19 13:48:37,226 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 90 flow [2024-11-19 13:48:37,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:37,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:37,226 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 13:48:37,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 13:48:37,227 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 13:48:37,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:37,228 INFO L85 PathProgramCache]: Analyzing trace with hash 423187167, now seen corresponding path program 1 times [2024-11-19 13:48:37,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:37,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738840149] [2024-11-19 13:48:37,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:37,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:37,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:37,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:37,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738840149] [2024-11-19 13:48:37,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738840149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:37,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80755544] [2024-11-19 13:48:37,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:37,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:37,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:37,415 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:37,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 13:48:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:37,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:48:37,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:37,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:37,640 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:48:37,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80755544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:37,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:48:37,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 13:48:37,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344423962] [2024-11-19 13:48:37,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:37,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:48:37,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:37,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:48:37,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:48:37,657 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-11-19 13:48:37,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 90 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:37,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:37,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-11-19 13:48:37,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:37,776 INFO L124 PetriNetUnfolderBase]: 24/87 cut-off events. [2024-11-19 13:48:37,777 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 13:48:37,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 87 events. 24/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 187 event pairs, 20 based on Foata normal form. 1/77 useless extension candidates. Maximal degree in co-relation 150. Up to 59 conditions per place. [2024-11-19 13:48:37,779 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 15 selfloop transitions, 6 changer transitions 0/32 dead transitions. [2024-11-19 13:48:37,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 128 flow [2024-11-19 13:48:37,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 13:48:37,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 13:48:37,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-11-19 13:48:37,781 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-19 13:48:37,781 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 90 flow. Second operand 6 states and 88 transitions. [2024-11-19 13:48:37,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 128 flow [2024-11-19 13:48:37,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:48:37,783 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 96 flow [2024-11-19 13:48:37,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-11-19 13:48:37,784 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-11-19 13:48:37,784 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 96 flow [2024-11-19 13:48:37,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:37,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:37,785 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 13:48:37,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 13:48:37,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:37,986 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 13:48:37,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:37,987 INFO L85 PathProgramCache]: Analyzing trace with hash 233900593, now seen corresponding path program 1 times [2024-11-19 13:48:37,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:37,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607158918] [2024-11-19 13:48:37,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:37,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:38,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:48:38,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:38,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607158918] [2024-11-19 13:48:38,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607158918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:38,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:38,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:38,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201033011] [2024-11-19 13:48:38,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:38,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:38,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:38,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:38,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:38,068 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-11-19 13:48:38,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:38,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:38,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-11-19 13:48:38,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:38,132 INFO L124 PetriNetUnfolderBase]: 24/86 cut-off events. [2024-11-19 13:48:38,132 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-19 13:48:38,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 86 events. 24/86 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 187 event pairs, 20 based on Foata normal form. 1/77 useless extension candidates. Maximal degree in co-relation 146. Up to 62 conditions per place. [2024-11-19 13:48:38,133 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 16 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2024-11-19 13:48:38,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 132 flow [2024-11-19 13:48:38,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:38,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:38,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-19 13:48:38,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2024-11-19 13:48:38,136 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 96 flow. Second operand 3 states and 52 transitions. [2024-11-19 13:48:38,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 31 transitions, 132 flow [2024-11-19 13:48:38,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 110 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-19 13:48:38,138 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 78 flow [2024-11-19 13:48:38,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2024-11-19 13:48:38,140 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-11-19 13:48:38,140 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 78 flow [2024-11-19 13:48:38,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:38,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:38,140 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:38,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 13:48:38,141 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 13:48:38,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:38,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1441491304, now seen corresponding path program 1 times [2024-11-19 13:48:38,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:38,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074999927] [2024-11-19 13:48:38,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:38,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:38,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:38,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:38,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074999927] [2024-11-19 13:48:38,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074999927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:38,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605400798] [2024-11-19 13:48:38,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:38,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:38,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:38,256 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:38,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 13:48:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:38,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 13:48:38,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:38,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:38,359 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:38,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:38,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605400798] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:38,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:38,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-19 13:48:38,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803737366] [2024-11-19 13:48:38,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:38,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 13:48:38,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:38,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 13:48:38,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-19 13:48:38,410 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-11-19 13:48:38,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 78 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:38,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:38,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-11-19 13:48:38,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:38,507 INFO L124 PetriNetUnfolderBase]: 24/90 cut-off events. [2024-11-19 13:48:38,507 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-19 13:48:38,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 90 events. 24/90 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 182 event pairs, 20 based on Foata normal form. 2/83 useless extension candidates. Maximal degree in co-relation 139. Up to 60 conditions per place. [2024-11-19 13:48:38,508 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 16 selfloop transitions, 7 changer transitions 0/34 dead transitions. [2024-11-19 13:48:38,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 139 flow [2024-11-19 13:48:38,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 13:48:38,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 13:48:38,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2024-11-19 13:48:38,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-11-19 13:48:38,517 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 78 flow. Second operand 7 states and 102 transitions. [2024-11-19 13:48:38,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 139 flow [2024-11-19 13:48:38,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 125 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:38,518 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 104 flow [2024-11-19 13:48:38,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=104, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-11-19 13:48:38,522 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2024-11-19 13:48:38,522 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 104 flow [2024-11-19 13:48:38,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:38,523 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:38,523 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:38,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 13:48:38,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-19 13:48:38,724 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 13:48:38,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:38,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1254322792, now seen corresponding path program 2 times [2024-11-19 13:48:38,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:38,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191156161] [2024-11-19 13:48:38,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:48:38,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:38,737 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 13:48:38,737 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:38,771 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 13:48:38,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:38,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191156161] [2024-11-19 13:48:38,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191156161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:38,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:38,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:38,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326240705] [2024-11-19 13:48:38,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:38,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:38,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:38,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:38,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:38,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-11-19 13:48:38,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:38,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:38,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-11-19 13:48:38,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:38,838 INFO L124 PetriNetUnfolderBase]: 26/97 cut-off events. [2024-11-19 13:48:38,839 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-19 13:48:38,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 97 events. 26/97 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 199 event pairs, 2 based on Foata normal form. 3/97 useless extension candidates. Maximal degree in co-relation 153. Up to 53 conditions per place. [2024-11-19 13:48:38,840 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 24 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2024-11-19 13:48:38,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 158 flow [2024-11-19 13:48:38,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:38,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:38,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-11-19 13:48:38,842 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-19 13:48:38,842 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 104 flow. Second operand 3 states and 55 transitions. [2024-11-19 13:48:38,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 158 flow [2024-11-19 13:48:38,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 154 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:38,844 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 102 flow [2024-11-19 13:48:38,844 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2024-11-19 13:48:38,846 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-11-19 13:48:38,846 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 102 flow [2024-11-19 13:48:38,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:38,846 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:38,846 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1] [2024-11-19 13:48:38,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 13:48:38,847 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 13:48:38,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:38,847 INFO L85 PathProgramCache]: Analyzing trace with hash 229275648, now seen corresponding path program 1 times [2024-11-19 13:48:38,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:38,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103686979] [2024-11-19 13:48:38,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:38,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:39,004 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 13:48:39,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:39,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103686979] [2024-11-19 13:48:39,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103686979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:39,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949296721] [2024-11-19 13:48:39,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:39,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:39,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:39,009 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:39,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 13:48:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:39,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 13:48:39,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:39,139 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 13:48:39,140 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:39,236 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 13:48:39,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949296721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:39,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:39,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-19 13:48:39,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338731849] [2024-11-19 13:48:39,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:39,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 13:48:39,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:39,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 13:48:39,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-19 13:48:39,261 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-11-19 13:48:39,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 102 flow. Second operand has 15 states, 15 states have (on average 12.333333333333334) internal successors, (185), 15 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:39,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:39,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-11-19 13:48:39,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:39,436 INFO L124 PetriNetUnfolderBase]: 24/98 cut-off events. [2024-11-19 13:48:39,437 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-19 13:48:39,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 98 events. 24/98 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 175 event pairs, 20 based on Foata normal form. 3/93 useless extension candidates. Maximal degree in co-relation 146. Up to 60 conditions per place. [2024-11-19 13:48:39,439 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 16 selfloop transitions, 13 changer transitions 0/39 dead transitions. [2024-11-19 13:48:39,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 39 transitions, 196 flow [2024-11-19 13:48:39,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 13:48:39,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 13:48:39,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 175 transitions. [2024-11-19 13:48:39,441 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40792540792540793 [2024-11-19 13:48:39,441 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 102 flow. Second operand 13 states and 175 transitions. [2024-11-19 13:48:39,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 39 transitions, 196 flow [2024-11-19 13:48:39,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 39 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:39,446 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 175 flow [2024-11-19 13:48:39,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=175, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2024-11-19 13:48:39,448 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2024-11-19 13:48:39,449 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 175 flow [2024-11-19 13:48:39,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.333333333333334) internal successors, (185), 15 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:39,450 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:39,450 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1] [2024-11-19 13:48:39,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 13:48:39,654 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 [2024-11-19 13:48:39,655 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 13:48:39,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:39,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1450152680, now seen corresponding path program 2 times [2024-11-19 13:48:39,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:39,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187280807] [2024-11-19 13:48:39,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:48:39,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:39,681 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:48:39,681 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 13:48:39,681 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 13:48:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:48:39,726 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 13:48:39,727 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 13:48:39,728 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-11-19 13:48:39,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-11-19 13:48:39,731 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-11-19 13:48:39,732 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-11-19 13:48:39,732 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2024-11-19 13:48:39,732 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2024-11-19 13:48:39,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2024-11-19 13:48:39,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-11-19 13:48:39,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-11-19 13:48:39,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-11-19 13:48:39,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-11-19 13:48:39,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 13:48:39,734 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-11-19 13:48:39,737 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 13:48:39,738 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-19 13:48:39,767 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 13:48:39,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 55 transitions, 120 flow [2024-11-19 13:48:39,777 INFO L124 PetriNetUnfolderBase]: 5/60 cut-off events. [2024-11-19 13:48:39,777 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 13:48:39,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 60 events. 5/60 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 113 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 45. Up to 3 conditions per place. [2024-11-19 13:48:39,780 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 55 transitions, 120 flow [2024-11-19 13:48:39,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 55 transitions, 120 flow [2024-11-19 13:48:39,782 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:48:39,782 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;@42a7010, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:48:39,786 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-19 13:48:39,787 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:48:39,787 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 13:48:39,787 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:48:39,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:39,787 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 13:48:39,787 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-19 13:48:39,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:39,788 INFO L85 PathProgramCache]: Analyzing trace with hash 357150, now seen corresponding path program 1 times [2024-11-19 13:48:39,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:39,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105804072] [2024-11-19 13:48:39,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:39,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:39,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:39,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:39,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105804072] [2024-11-19 13:48:39,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105804072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:39,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:39,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:39,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411458647] [2024-11-19 13:48:39,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:39,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:48:39,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:39,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:48:39,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:48:39,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-11-19 13:48:39,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:39,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:39,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-11-19 13:48:39,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:40,045 INFO L124 PetriNetUnfolderBase]: 640/1334 cut-off events. [2024-11-19 13:48:40,046 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-11-19 13:48:40,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2417 conditions, 1334 events. 640/1334 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7514 event pairs, 570 based on Foata normal form. 70/1293 useless extension candidates. Maximal degree in co-relation 1594. Up to 1043 conditions per place. [2024-11-19 13:48:40,056 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 31 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2024-11-19 13:48:40,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 186 flow [2024-11-19 13:48:40,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:48:40,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:48:40,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-19 13:48:40,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-19 13:48:40,059 INFO L175 Difference]: Start difference. First operand has 55 places, 55 transitions, 120 flow. Second operand 4 states and 120 transitions. [2024-11-19 13:48:40,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 186 flow [2024-11-19 13:48:40,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 186 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:48:40,062 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 138 flow [2024-11-19 13:48:40,062 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-11-19 13:48:40,063 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2024-11-19 13:48:40,063 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 138 flow [2024-11-19 13:48:40,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:40,064 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:40,065 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 13:48:40,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 13:48:40,065 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-19 13:48:40,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:40,065 INFO L85 PathProgramCache]: Analyzing trace with hash 2050277247, now seen corresponding path program 1 times [2024-11-19 13:48:40,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:40,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104952126] [2024-11-19 13:48:40,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:40,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:40,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:40,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:40,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104952126] [2024-11-19 13:48:40,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104952126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:40,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618835979] [2024-11-19 13:48:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:40,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:40,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:40,126 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:40,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 13:48:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:40,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:48:40,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:40,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:40,211 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:48:40,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618835979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:40,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:48:40,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 13:48:40,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940015061] [2024-11-19 13:48:40,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:40,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:48:40,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:40,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:48:40,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:48:40,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-11-19 13:48:40,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:40,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:40,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-11-19 13:48:40,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:40,451 INFO L124 PetriNetUnfolderBase]: 640/1333 cut-off events. [2024-11-19 13:48:40,451 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-19 13:48:40,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2427 conditions, 1333 events. 640/1333 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7536 event pairs, 570 based on Foata normal form. 1/1223 useless extension candidates. Maximal degree in co-relation 2408. Up to 1038 conditions per place. [2024-11-19 13:48:40,459 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 27 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2024-11-19 13:48:40,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 200 flow [2024-11-19 13:48:40,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 13:48:40,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 13:48:40,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-11-19 13:48:40,461 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-11-19 13:48:40,461 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 138 flow. Second operand 6 states and 154 transitions. [2024-11-19 13:48:40,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 200 flow [2024-11-19 13:48:40,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 53 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:48:40,463 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 144 flow [2024-11-19 13:48:40,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2024-11-19 13:48:40,464 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-11-19 13:48:40,464 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 144 flow [2024-11-19 13:48:40,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:40,464 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:40,464 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 13:48:40,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 13:48:40,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:40,669 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-19 13:48:40,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:40,669 INFO L85 PathProgramCache]: Analyzing trace with hash -865914424, now seen corresponding path program 1 times [2024-11-19 13:48:40,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:40,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912116593] [2024-11-19 13:48:40,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:40,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:40,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:48:40,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:40,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912116593] [2024-11-19 13:48:40,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912116593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:40,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:40,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:40,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063186553] [2024-11-19 13:48:40,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:40,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:40,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:40,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:40,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:40,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-11-19 13:48:40,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2024-11-19 13:48:40,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:40,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-11-19 13:48:40,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:40,830 INFO L124 PetriNetUnfolderBase]: 640/1332 cut-off events. [2024-11-19 13:48:40,831 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-11-19 13:48:40,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2429 conditions, 1332 events. 640/1332 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7547 event pairs, 570 based on Foata normal form. 1/1223 useless extension candidates. Maximal degree in co-relation 2404. Up to 1041 conditions per place. [2024-11-19 13:48:40,838 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 28 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2024-11-19 13:48:40,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 52 transitions, 204 flow [2024-11-19 13:48:40,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:40,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:40,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-11-19 13:48:40,839 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5515151515151515 [2024-11-19 13:48:40,840 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 144 flow. Second operand 3 states and 91 transitions. [2024-11-19 13:48:40,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 52 transitions, 204 flow [2024-11-19 13:48:40,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 52 transitions, 182 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-19 13:48:40,843 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 126 flow [2024-11-19 13:48:40,843 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-11-19 13:48:40,843 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-11-19 13:48:40,844 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 126 flow [2024-11-19 13:48:40,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2024-11-19 13:48:40,844 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:40,844 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:40,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 13:48:40,844 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-19 13:48:40,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:40,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1081237396, now seen corresponding path program 1 times [2024-11-19 13:48:40,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:40,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338840995] [2024-11-19 13:48:40,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:40,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:40,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:40,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:40,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338840995] [2024-11-19 13:48:40,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338840995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:40,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668581459] [2024-11-19 13:48:40,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:40,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:40,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:40,908 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:40,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 13:48:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:40,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 13:48:40,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:41,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:41,009 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:41,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:41,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668581459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:41,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:41,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-19 13:48:41,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367796467] [2024-11-19 13:48:41,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:41,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 13:48:41,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:41,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 13:48:41,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-19 13:48:41,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-11-19 13:48:41,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 126 flow. Second operand has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:41,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:41,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-11-19 13:48:41,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:41,273 INFO L124 PetriNetUnfolderBase]: 640/1336 cut-off events. [2024-11-19 13:48:41,274 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-11-19 13:48:41,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2432 conditions, 1336 events. 640/1336 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7525 event pairs, 570 based on Foata normal form. 2/1229 useless extension candidates. Maximal degree in co-relation 2397. Up to 1039 conditions per place. [2024-11-19 13:48:41,282 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 28 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2024-11-19 13:48:41,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 211 flow [2024-11-19 13:48:41,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 13:48:41,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 13:48:41,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-11-19 13:48:41,284 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4597402597402597 [2024-11-19 13:48:41,284 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 126 flow. Second operand 7 states and 177 transitions. [2024-11-19 13:48:41,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 211 flow [2024-11-19 13:48:41,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:41,285 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 152 flow [2024-11-19 13:48:41,286 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=152, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-11-19 13:48:41,286 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2024-11-19 13:48:41,286 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 152 flow [2024-11-19 13:48:41,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:41,287 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:41,287 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:41,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 13:48:41,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-19 13:48:41,492 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-19 13:48:41,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:41,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1750020084, now seen corresponding path program 2 times [2024-11-19 13:48:41,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:41,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314575565] [2024-11-19 13:48:41,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:48:41,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:41,502 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 13:48:41,502 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:41,523 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 13:48:41,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:41,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314575565] [2024-11-19 13:48:41,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314575565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:41,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:41,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:41,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111824142] [2024-11-19 13:48:41,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:41,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:41,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:41,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:41,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:41,531 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-11-19 13:48:41,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:41,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:41,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-11-19 13:48:41,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:41,698 INFO L124 PetriNetUnfolderBase]: 698/1432 cut-off events. [2024-11-19 13:48:41,698 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-11-19 13:48:41,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 1432 events. 698/1432 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8011 event pairs, 291 based on Foata normal form. 36/1390 useless extension candidates. Maximal degree in co-relation 2592. Up to 976 conditions per place. [2024-11-19 13:48:41,706 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 48 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-11-19 13:48:41,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 68 transitions, 283 flow [2024-11-19 13:48:41,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:41,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:41,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-11-19 13:48:41,708 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6424242424242425 [2024-11-19 13:48:41,708 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 152 flow. Second operand 3 states and 106 transitions. [2024-11-19 13:48:41,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 68 transitions, 283 flow [2024-11-19 13:48:41,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 279 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:41,712 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 150 flow [2024-11-19 13:48:41,712 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-11-19 13:48:41,713 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-11-19 13:48:41,713 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 150 flow [2024-11-19 13:48:41,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:41,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:41,713 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:41,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 13:48:41,713 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-19 13:48:41,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:41,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1583951849, now seen corresponding path program 1 times [2024-11-19 13:48:41,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:41,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275885248] [2024-11-19 13:48:41,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:41,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:41,783 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 13:48:41,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:41,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275885248] [2024-11-19 13:48:41,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275885248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:41,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:41,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:41,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048943622] [2024-11-19 13:48:41,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:41,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:41,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:41,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:41,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:41,796 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-11-19 13:48:41,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:41,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:41,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-11-19 13:48:41,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:41,967 INFO L124 PetriNetUnfolderBase]: 640/1326 cut-off events. [2024-11-19 13:48:41,968 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2024-11-19 13:48:41,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2500 conditions, 1326 events. 640/1326 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7250 event pairs, 264 based on Foata normal form. 36/1290 useless extension candidates. Maximal degree in co-relation 2461. Up to 882 conditions per place. [2024-11-19 13:48:41,974 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 47 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2024-11-19 13:48:41,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 67 transitions, 279 flow [2024-11-19 13:48:41,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:41,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:41,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-19 13:48:41,975 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-11-19 13:48:41,975 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 150 flow. Second operand 3 states and 105 transitions. [2024-11-19 13:48:41,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 67 transitions, 279 flow [2024-11-19 13:48:41,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 67 transitions, 275 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:41,978 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 148 flow [2024-11-19 13:48:41,978 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-11-19 13:48:41,979 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2024-11-19 13:48:41,979 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 148 flow [2024-11-19 13:48:41,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:41,980 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:41,980 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:41,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 13:48:41,980 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-19 13:48:41,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:41,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1803873116, now seen corresponding path program 1 times [2024-11-19 13:48:41,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:41,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273431316] [2024-11-19 13:48:41,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:41,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:42,035 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 13:48:42,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:42,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273431316] [2024-11-19 13:48:42,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273431316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:42,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:42,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:42,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869479030] [2024-11-19 13:48:42,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:42,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:42,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:42,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:42,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:42,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-11-19 13:48:42,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:42,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:42,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-11-19 13:48:42,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:42,192 INFO L124 PetriNetUnfolderBase]: 695/1416 cut-off events. [2024-11-19 13:48:42,192 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2024-11-19 13:48:42,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2684 conditions, 1416 events. 695/1416 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7819 event pairs, 102 based on Foata normal form. 33/1401 useless extension candidates. Maximal degree in co-relation 2645. Up to 913 conditions per place. [2024-11-19 13:48:42,201 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 47 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2024-11-19 13:48:42,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 274 flow [2024-11-19 13:48:42,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:42,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:42,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-19 13:48:42,203 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-11-19 13:48:42,203 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 148 flow. Second operand 3 states and 105 transitions. [2024-11-19 13:48:42,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 274 flow [2024-11-19 13:48:42,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 65 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:42,205 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 146 flow [2024-11-19 13:48:42,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2024-11-19 13:48:42,205 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 5 predicate places. [2024-11-19 13:48:42,205 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 146 flow [2024-11-19 13:48:42,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:42,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:42,206 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2024-11-19 13:48:42,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 13:48:42,206 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-19 13:48:42,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:42,206 INFO L85 PathProgramCache]: Analyzing trace with hash -85516912, now seen corresponding path program 1 times [2024-11-19 13:48:42,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:42,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310766083] [2024-11-19 13:48:42,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:42,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:42,328 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 13:48:42,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:42,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310766083] [2024-11-19 13:48:42,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310766083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:42,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555062693] [2024-11-19 13:48:42,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:42,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:42,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:42,331 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:42,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 13:48:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:42,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 13:48:42,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:42,453 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 13:48:42,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:42,534 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 13:48:42,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555062693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:42,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:42,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-19 13:48:42,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871649556] [2024-11-19 13:48:42,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:42,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 13:48:42,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:42,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 13:48:42,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-19 13:48:42,548 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-11-19 13:48:42,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 146 flow. Second operand has 15 states, 15 states have (on average 21.4) internal successors, (321), 15 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:42,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:42,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-11-19 13:48:42,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:42,828 INFO L124 PetriNetUnfolderBase]: 640/1331 cut-off events. [2024-11-19 13:48:42,828 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-11-19 13:48:42,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2517 conditions, 1331 events. 640/1331 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7403 event pairs, 570 based on Foata normal form. 3/1239 useless extension candidates. Maximal degree in co-relation 2451. Up to 1039 conditions per place. [2024-11-19 13:48:42,836 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 28 selfloop transitions, 13 changer transitions 0/58 dead transitions. [2024-11-19 13:48:42,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 58 transitions, 264 flow [2024-11-19 13:48:42,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 13:48:42,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 13:48:42,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 304 transitions. [2024-11-19 13:48:42,839 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4251748251748252 [2024-11-19 13:48:42,839 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 146 flow. Second operand 13 states and 304 transitions. [2024-11-19 13:48:42,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 58 transitions, 264 flow [2024-11-19 13:48:42,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 58 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:42,841 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 219 flow [2024-11-19 13:48:42,841 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=219, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2024-11-19 13:48:42,842 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2024-11-19 13:48:42,842 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 219 flow [2024-11-19 13:48:42,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 21.4) internal successors, (321), 15 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:42,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:42,842 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 3, 2, 1, 1, 1, 1, 1] [2024-11-19 13:48:42,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 13:48:43,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 13:48:43,043 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-19 13:48:43,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:43,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1711516783, now seen corresponding path program 2 times [2024-11-19 13:48:43,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:43,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757401777] [2024-11-19 13:48:43,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:48:43,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:43,070 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:48:43,070 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 13:48:43,070 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 13:48:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:48:43,093 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 13:48:43,093 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 13:48:43,094 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-11-19 13:48:43,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2024-11-19 13:48:43,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2024-11-19 13:48:43,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2024-11-19 13:48:43,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2024-11-19 13:48:43,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2024-11-19 13:48:43,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2024-11-19 13:48:43,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2024-11-19 13:48:43,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2024-11-19 13:48:43,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2024-11-19 13:48:43,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2024-11-19 13:48:43,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2024-11-19 13:48:43,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2024-11-19 13:48:43,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2024-11-19 13:48:43,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2024-11-19 13:48:43,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 13:48:43,097 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2024-11-19 13:48:43,099 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 13:48:43,099 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-19 13:48:43,132 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 13:48:43,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 77 transitions, 172 flow [2024-11-19 13:48:43,141 INFO L124 PetriNetUnfolderBase]: 7/85 cut-off events. [2024-11-19 13:48:43,141 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-19 13:48:43,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 85 events. 7/85 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 208 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 66. Up to 4 conditions per place. [2024-11-19 13:48:43,141 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 77 transitions, 172 flow [2024-11-19 13:48:43,142 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 77 transitions, 172 flow [2024-11-19 13:48:43,143 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:48:43,143 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;@42a7010, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:48:43,143 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-19 13:48:43,144 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:48:43,144 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 13:48:43,144 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:48:43,144 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:43,144 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 13:48:43,145 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 13:48:43,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:43,145 INFO L85 PathProgramCache]: Analyzing trace with hash 433611, now seen corresponding path program 1 times [2024-11-19 13:48:43,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:43,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028915810] [2024-11-19 13:48:43,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:43,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:43,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:43,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:43,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028915810] [2024-11-19 13:48:43,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028915810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:43,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:43,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:43,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10782757] [2024-11-19 13:48:43,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:43,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:48:43,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:43,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:48:43,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:48:43,179 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-11-19 13:48:43,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:43,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:43,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-11-19 13:48:43,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:45,005 INFO L124 PetriNetUnfolderBase]: 11409/19193 cut-off events. [2024-11-19 13:48:45,006 INFO L125 PetriNetUnfolderBase]: For 799/799 co-relation queries the response was YES. [2024-11-19 13:48:45,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35523 conditions, 19193 events. 11409/19193 cut-off events. For 799/799 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 146550 event pairs, 10250 based on Foata normal form. 1159/19041 useless extension candidates. Maximal degree in co-relation 15025. Up to 15805 conditions per place. [2024-11-19 13:48:45,150 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 43 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-11-19 13:48:45,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 75 transitions, 260 flow [2024-11-19 13:48:45,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:48:45,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:48:45,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2024-11-19 13:48:45,152 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5487012987012987 [2024-11-19 13:48:45,152 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 172 flow. Second operand 4 states and 169 transitions. [2024-11-19 13:48:45,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 75 transitions, 260 flow [2024-11-19 13:48:45,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 258 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-19 13:48:45,154 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 186 flow [2024-11-19 13:48:45,155 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-11-19 13:48:45,155 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-11-19 13:48:45,156 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 186 flow [2024-11-19 13:48:45,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:45,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:45,157 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 13:48:45,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 13:48:45,157 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 13:48:45,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:45,157 INFO L85 PathProgramCache]: Analyzing trace with hash 33236063, now seen corresponding path program 1 times [2024-11-19 13:48:45,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:45,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610279852] [2024-11-19 13:48:45,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:45,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:45,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:45,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610279852] [2024-11-19 13:48:45,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610279852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:45,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654791725] [2024-11-19 13:48:45,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:45,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:45,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:45,274 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:45,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 13:48:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:45,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:48:45,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:45,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:45,367 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:48:45,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654791725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:45,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:48:45,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 13:48:45,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150039718] [2024-11-19 13:48:45,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:45,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:48:45,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:45,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:48:45,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:48:45,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-11-19 13:48:45,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:45,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:45,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-11-19 13:48:45,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:47,243 INFO L124 PetriNetUnfolderBase]: 11409/19192 cut-off events. [2024-11-19 13:48:47,244 INFO L125 PetriNetUnfolderBase]: For 442/442 co-relation queries the response was YES. [2024-11-19 13:48:47,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35412 conditions, 19192 events. 11409/19192 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 146540 event pairs, 10250 based on Foata normal form. 1/17882 useless extension candidates. Maximal degree in co-relation 35392. Up to 15800 conditions per place. [2024-11-19 13:48:47,352 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 39 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2024-11-19 13:48:47,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 74 transitions, 272 flow [2024-11-19 13:48:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 13:48:47,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 13:48:47,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 220 transitions. [2024-11-19 13:48:47,353 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-11-19 13:48:47,354 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 186 flow. Second operand 6 states and 220 transitions. [2024-11-19 13:48:47,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 74 transitions, 272 flow [2024-11-19 13:48:47,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 74 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:48:47,356 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 192 flow [2024-11-19 13:48:47,356 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-11-19 13:48:47,356 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2024-11-19 13:48:47,356 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 192 flow [2024-11-19 13:48:47,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:47,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:47,357 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 13:48:47,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 13:48:47,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:47,562 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 13:48:47,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:47,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1030318389, now seen corresponding path program 1 times [2024-11-19 13:48:47,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:47,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135227425] [2024-11-19 13:48:47,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:47,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:47,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:48:47,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:47,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135227425] [2024-11-19 13:48:47,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135227425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:47,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:47,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:47,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024308113] [2024-11-19 13:48:47,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:47,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:47,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:47,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:47,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:47,598 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-11-19 13:48:47,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:47,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:47,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-11-19 13:48:47,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:49,044 INFO L124 PetriNetUnfolderBase]: 11409/19191 cut-off events. [2024-11-19 13:48:49,044 INFO L125 PetriNetUnfolderBase]: For 447/447 co-relation queries the response was YES. [2024-11-19 13:48:49,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35414 conditions, 19191 events. 11409/19191 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 146566 event pairs, 10250 based on Foata normal form. 1/17882 useless extension candidates. Maximal degree in co-relation 35388. Up to 15803 conditions per place. [2024-11-19 13:48:49,162 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 40 selfloop transitions, 4 changer transitions 0/73 dead transitions. [2024-11-19 13:48:49,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 73 transitions, 276 flow [2024-11-19 13:48:49,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:49,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:49,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-11-19 13:48:49,164 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5627705627705628 [2024-11-19 13:48:49,164 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 192 flow. Second operand 3 states and 130 transitions. [2024-11-19 13:48:49,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 73 transitions, 276 flow [2024-11-19 13:48:49,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 254 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-19 13:48:49,166 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 174 flow [2024-11-19 13:48:49,167 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2024-11-19 13:48:49,168 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2024-11-19 13:48:49,169 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 174 flow [2024-11-19 13:48:49,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:49,169 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:49,169 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:49,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 13:48:49,169 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 13:48:49,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:49,170 INFO L85 PathProgramCache]: Analyzing trace with hash -2000107466, now seen corresponding path program 1 times [2024-11-19 13:48:49,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:49,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330939514] [2024-11-19 13:48:49,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:49,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:49,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:49,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:49,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330939514] [2024-11-19 13:48:49,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330939514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:49,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060663977] [2024-11-19 13:48:49,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:49,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:49,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:49,225 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:49,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 13:48:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:49,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 13:48:49,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:49,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:49,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:49,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:49,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060663977] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:49,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:49,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-19 13:48:49,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525605575] [2024-11-19 13:48:49,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:49,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 13:48:49,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:49,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 13:48:49,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-19 13:48:49,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-11-19 13:48:49,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 174 flow. Second operand has 10 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:49,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:49,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-11-19 13:48:49,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:50,881 INFO L124 PetriNetUnfolderBase]: 11409/19195 cut-off events. [2024-11-19 13:48:50,882 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-11-19 13:48:50,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35417 conditions, 19195 events. 11409/19195 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 146625 event pairs, 10250 based on Foata normal form. 2/17888 useless extension candidates. Maximal degree in co-relation 35381. Up to 15801 conditions per place. [2024-11-19 13:48:50,997 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 40 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2024-11-19 13:48:50,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 76 transitions, 283 flow [2024-11-19 13:48:50,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 13:48:50,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 13:48:50,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 252 transitions. [2024-11-19 13:48:50,999 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2024-11-19 13:48:50,999 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 174 flow. Second operand 7 states and 252 transitions. [2024-11-19 13:48:50,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 76 transitions, 283 flow [2024-11-19 13:48:51,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 76 transitions, 269 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:51,002 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 200 flow [2024-11-19 13:48:51,002 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2024-11-19 13:48:51,003 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 8 predicate places. [2024-11-19 13:48:51,003 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 200 flow [2024-11-19 13:48:51,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:51,003 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:51,004 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:51,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 13:48:51,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:51,205 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 13:48:51,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:51,206 INFO L85 PathProgramCache]: Analyzing trace with hash -132993098, now seen corresponding path program 2 times [2024-11-19 13:48:51,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:51,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720850294] [2024-11-19 13:48:51,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:48:51,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:51,221 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 13:48:51,221 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:51,251 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 13:48:51,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:51,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720850294] [2024-11-19 13:48:51,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720850294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:51,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:51,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:51,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76304633] [2024-11-19 13:48:51,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:51,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:51,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:51,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:51,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:51,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-11-19 13:48:51,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:51,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:51,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-11-19 13:48:51,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:52,736 INFO L124 PetriNetUnfolderBase]: 12446/20635 cut-off events. [2024-11-19 13:48:52,736 INFO L125 PetriNetUnfolderBase]: For 463/463 co-relation queries the response was YES. [2024-11-19 13:48:52,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38336 conditions, 20635 events. 12446/20635 cut-off events. For 463/463 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 158626 event pairs, 1538 based on Foata normal form. 399/20377 useless extension candidates. Maximal degree in co-relation 38295. Up to 14759 conditions per place. [2024-11-19 13:48:52,845 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 72 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2024-11-19 13:48:52,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 101 transitions, 408 flow [2024-11-19 13:48:52,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:52,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:52,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2024-11-19 13:48:52,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6796536796536796 [2024-11-19 13:48:52,847 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 200 flow. Second operand 3 states and 157 transitions. [2024-11-19 13:48:52,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 101 transitions, 408 flow [2024-11-19 13:48:52,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 101 transitions, 404 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:52,851 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 198 flow [2024-11-19 13:48:52,851 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2024-11-19 13:48:52,851 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2024-11-19 13:48:52,852 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 198 flow [2024-11-19 13:48:52,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:52,852 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:52,852 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:52,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 13:48:52,852 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 13:48:52,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:52,853 INFO L85 PathProgramCache]: Analyzing trace with hash 172181730, now seen corresponding path program 1 times [2024-11-19 13:48:52,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:52,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806526463] [2024-11-19 13:48:52,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:52,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:52,909 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 13:48:52,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:52,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806526463] [2024-11-19 13:48:52,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806526463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:52,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:52,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:52,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081456615] [2024-11-19 13:48:52,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:52,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:52,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:52,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:52,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:52,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-11-19 13:48:52,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:52,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:52,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-11-19 13:48:52,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:54,264 INFO L124 PetriNetUnfolderBase]: 11409/19199 cut-off events. [2024-11-19 13:48:54,265 INFO L125 PetriNetUnfolderBase]: For 1221/1221 co-relation queries the response was YES. [2024-11-19 13:48:54,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36225 conditions, 19199 events. 11409/19199 cut-off events. For 1221/1221 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 148235 event pairs, 1538 based on Foata normal form. 399/18956 useless extension candidates. Maximal degree in co-relation 36185. Up to 13323 conditions per place. [2024-11-19 13:48:54,384 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 71 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2024-11-19 13:48:54,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 100 transitions, 404 flow [2024-11-19 13:48:54,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:54,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:54,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-11-19 13:48:54,386 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6753246753246753 [2024-11-19 13:48:54,386 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 198 flow. Second operand 3 states and 156 transitions. [2024-11-19 13:48:54,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 100 transitions, 404 flow [2024-11-19 13:48:54,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 100 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:54,390 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 196 flow [2024-11-19 13:48:54,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2024-11-19 13:48:54,390 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2024-11-19 13:48:54,390 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 196 flow [2024-11-19 13:48:54,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:54,391 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:54,391 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:54,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 13:48:54,391 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 13:48:54,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:54,391 INFO L85 PathProgramCache]: Analyzing trace with hash -2081627036, now seen corresponding path program 1 times [2024-11-19 13:48:54,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:54,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453341798] [2024-11-19 13:48:54,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:54,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:54,517 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 13:48:54,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:54,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453341798] [2024-11-19 13:48:54,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453341798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:54,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106354398] [2024-11-19 13:48:54,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:54,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:54,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:54,520 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:54,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 13:48:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:54,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 13:48:54,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:54,657 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 13:48:54,658 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:54,729 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 13:48:54,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106354398] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:54,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:54,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-19 13:48:54,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818147087] [2024-11-19 13:48:54,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:54,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 13:48:54,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:54,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 13:48:54,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-19 13:48:54,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-11-19 13:48:54,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 196 flow. Second operand has 15 states, 15 states have (on average 30.466666666666665) internal successors, (457), 15 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:54,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:54,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-11-19 13:48:54,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:56,162 INFO L124 PetriNetUnfolderBase]: 11409/19208 cut-off events. [2024-11-19 13:48:56,163 INFO L125 PetriNetUnfolderBase]: For 1264/1264 co-relation queries the response was YES. [2024-11-19 13:48:56,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36252 conditions, 19208 events. 11409/19208 cut-off events. For 1264/1264 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 146578 event pairs, 10250 based on Foata normal form. 3/17902 useless extension candidates. Maximal degree in co-relation 36185. Up to 15801 conditions per place. [2024-11-19 13:48:56,241 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 40 selfloop transitions, 13 changer transitions 0/80 dead transitions. [2024-11-19 13:48:56,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 80 transitions, 338 flow [2024-11-19 13:48:56,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 13:48:56,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 13:48:56,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 433 transitions. [2024-11-19 13:48:56,243 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4325674325674326 [2024-11-19 13:48:56,244 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 196 flow. Second operand 13 states and 433 transitions. [2024-11-19 13:48:56,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 80 transitions, 338 flow [2024-11-19 13:48:56,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 80 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:56,247 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 269 flow [2024-11-19 13:48:56,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=269, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-11-19 13:48:56,247 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 19 predicate places. [2024-11-19 13:48:56,247 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 269 flow [2024-11-19 13:48:56,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 30.466666666666665) internal successors, (457), 15 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:56,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:56,248 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:56,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 13:48:56,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:56,449 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 13:48:56,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:56,449 INFO L85 PathProgramCache]: Analyzing trace with hash -468022576, now seen corresponding path program 2 times [2024-11-19 13:48:56,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:56,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435852902] [2024-11-19 13:48:56,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:48:56,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:56,460 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 13:48:56,460 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:56,483 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-19 13:48:56,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:56,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435852902] [2024-11-19 13:48:56,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435852902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:56,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:56,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:56,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393754543] [2024-11-19 13:48:56,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:56,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:56,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:56,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:56,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:56,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-11-19 13:48:56,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 269 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:56,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:56,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-11-19 13:48:56,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:58,094 INFO L124 PetriNetUnfolderBase]: 12443/20454 cut-off events. [2024-11-19 13:48:58,094 INFO L125 PetriNetUnfolderBase]: For 504/504 co-relation queries the response was YES. [2024-11-19 13:48:58,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38186 conditions, 20454 events. 12443/20454 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 151700 event pairs, 3941 based on Foata normal form. 396/19986 useless extension candidates. Maximal degree in co-relation 38099. Up to 14696 conditions per place. [2024-11-19 13:48:58,194 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 77 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2024-11-19 13:48:58,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 104 transitions, 480 flow [2024-11-19 13:48:58,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:58,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:58,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-11-19 13:48:58,195 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6753246753246753 [2024-11-19 13:48:58,195 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 269 flow. Second operand 3 states and 156 transitions. [2024-11-19 13:48:58,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 104 transitions, 480 flow [2024-11-19 13:48:58,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 104 transitions, 470 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-19 13:48:58,198 INFO L231 Difference]: Finished difference. Result has 93 places, 79 transitions, 261 flow [2024-11-19 13:48:58,198 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=93, PETRI_TRANSITIONS=79} [2024-11-19 13:48:58,199 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 16 predicate places. [2024-11-19 13:48:58,199 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 79 transitions, 261 flow [2024-11-19 13:48:58,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:58,199 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:58,199 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:58,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 13:48:58,200 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 13:48:58,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:58,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1623797475, now seen corresponding path program 1 times [2024-11-19 13:48:58,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:58,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915938319] [2024-11-19 13:48:58,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:58,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:58,268 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-19 13:48:58,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:58,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915938319] [2024-11-19 13:48:58,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915938319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:58,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:58,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:58,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760639191] [2024-11-19 13:48:58,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:58,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:58,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:58,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:58,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:58,278 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-11-19 13:48:58,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 79 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:58,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:58,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-11-19 13:48:58,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:59,640 INFO L124 PetriNetUnfolderBase]: 11409/18892 cut-off events. [2024-11-19 13:48:59,640 INFO L125 PetriNetUnfolderBase]: For 1252/1252 co-relation queries the response was YES. [2024-11-19 13:48:59,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35949 conditions, 18892 events. 11409/18892 cut-off events. For 1252/1252 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 139055 event pairs, 3644 based on Foata normal form. 396/18475 useless extension candidates. Maximal degree in co-relation 35866. Up to 13266 conditions per place. [2024-11-19 13:48:59,727 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 76 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2024-11-19 13:48:59,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 103 transitions, 470 flow [2024-11-19 13:48:59,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:59,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:59,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-11-19 13:48:59,728 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.670995670995671 [2024-11-19 13:48:59,728 INFO L175 Difference]: Start difference. First operand has 93 places, 79 transitions, 261 flow. Second operand 3 states and 155 transitions. [2024-11-19 13:48:59,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 103 transitions, 470 flow [2024-11-19 13:48:59,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 103 transitions, 466 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:59,732 INFO L231 Difference]: Finished difference. Result has 92 places, 78 transitions, 259 flow [2024-11-19 13:48:59,733 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=92, PETRI_TRANSITIONS=78} [2024-11-19 13:48:59,733 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 15 predicate places. [2024-11-19 13:48:59,734 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 78 transitions, 259 flow [2024-11-19 13:48:59,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:59,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:59,734 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:59,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 13:48:59,734 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 13:48:59,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:59,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1460830165, now seen corresponding path program 1 times [2024-11-19 13:48:59,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:59,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590171645] [2024-11-19 13:48:59,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:59,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:59,800 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-19 13:48:59,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:59,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590171645] [2024-11-19 13:48:59,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590171645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:59,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:59,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:59,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711009346] [2024-11-19 13:48:59,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:59,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:59,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:59,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:59,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:59,811 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-11-19 13:48:59,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 78 transitions, 259 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:59,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:59,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-11-19 13:48:59,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:49:01,608 INFO L124 PetriNetUnfolderBase]: 12377/20389 cut-off events. [2024-11-19 13:49:01,608 INFO L125 PetriNetUnfolderBase]: For 1348/1348 co-relation queries the response was YES. [2024-11-19 13:49:01,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38843 conditions, 20389 events. 12377/20389 cut-off events. For 1348/1348 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 152589 event pairs, 2132 based on Foata normal form. 363/20146 useless extension candidates. Maximal degree in co-relation 38760. Up to 13673 conditions per place. [2024-11-19 13:49:01,722 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 76 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2024-11-19 13:49:01,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 101 transitions, 465 flow [2024-11-19 13:49:01,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:49:01,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:49:01,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-11-19 13:49:01,723 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.670995670995671 [2024-11-19 13:49:01,723 INFO L175 Difference]: Start difference. First operand has 92 places, 78 transitions, 259 flow. Second operand 3 states and 155 transitions. [2024-11-19 13:49:01,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 101 transitions, 465 flow [2024-11-19 13:49:01,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 101 transitions, 457 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:49:01,726 INFO L231 Difference]: Finished difference. Result has 91 places, 77 transitions, 257 flow [2024-11-19 13:49:01,727 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=257, PETRI_PLACES=91, PETRI_TRANSITIONS=77} [2024-11-19 13:49:01,727 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 14 predicate places. [2024-11-19 13:49:01,727 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 77 transitions, 257 flow [2024-11-19 13:49:01,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:49:01,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:49:01,728 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 4, 3, 1, 1, 1, 1, 1, 1] [2024-11-19 13:49:01,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 13:49:01,728 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-19 13:49:01,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:49:01,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1958880075, now seen corresponding path program 1 times [2024-11-19 13:49:01,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:49:01,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786547826] [2024-11-19 13:49:01,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:49:01,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:49:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:49:01,749 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 13:49:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:49:01,765 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 13:49:01,766 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 13:49:01,766 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2024-11-19 13:49:01,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2024-11-19 13:49:01,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2024-11-19 13:49:01,767 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2024-11-19 13:49:01,767 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2024-11-19 13:49:01,767 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2024-11-19 13:49:01,767 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2024-11-19 13:49:01,767 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2024-11-19 13:49:01,767 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2024-11-19 13:49:01,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2024-11-19 13:49:01,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2024-11-19 13:49:01,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2024-11-19 13:49:01,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2024-11-19 13:49:01,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2024-11-19 13:49:01,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2024-11-19 13:49:01,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2024-11-19 13:49:01,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2024-11-19 13:49:01,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2024-11-19 13:49:01,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2024-11-19 13:49:01,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-19 13:49:01,771 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:49:01,771 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 13:49:01,771 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-19 13:49:01,818 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 13:49:01,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 226 flow [2024-11-19 13:49:01,839 INFO L124 PetriNetUnfolderBase]: 9/110 cut-off events. [2024-11-19 13:49:01,839 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-19 13:49:01,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 110 events. 9/110 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 314 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 93. Up to 5 conditions per place. [2024-11-19 13:49:01,840 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 99 transitions, 226 flow [2024-11-19 13:49:01,841 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 99 transitions, 226 flow [2024-11-19 13:49:01,842 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:49:01,842 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;@42a7010, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:49:01,842 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-19 13:49:01,847 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:49:01,847 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 13:49:01,847 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:49:01,847 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:49:01,848 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 13:49:01,848 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-19 13:49:01,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:49:01,848 INFO L85 PathProgramCache]: Analyzing trace with hash 531918, now seen corresponding path program 1 times [2024-11-19 13:49:01,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:49:01,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154713719] [2024-11-19 13:49:01,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:49:01,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:49:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:49:01,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:49:01,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:49:01,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154713719] [2024-11-19 13:49:01,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154713719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:49:01,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:49:01,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:49:01,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212446582] [2024-11-19 13:49:01,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:49:01,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:49:01,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:49:01,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:49:01,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:49:01,884 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 99 [2024-11-19 13:49:01,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 99 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:49:01,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:49:01,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 99 [2024-11-19 13:49:01,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand