./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:51:57,465 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:51:57,528 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:51:57,532 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:51:57,532 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:51:57,560 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:51:57,560 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:51:57,561 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:51:57,561 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:51:57,561 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:51:57,561 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:51:57,562 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:51:57,562 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:51:57,562 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:51:57,562 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:51:57,563 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:51:57,563 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:51:57,567 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:51:57,567 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:51:57,567 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:51:57,568 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:51:57,568 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:51:57,568 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:51:57,568 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:51:57,569 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:51:57,569 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:51:57,569 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:51:57,569 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:51:57,569 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:51:57,569 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:51:57,569 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:51:57,570 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:51:57,570 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:51:57,570 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:51:57,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:51:57,570 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:51:57,570 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:51:57,571 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:51:57,571 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:51:57,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:51:57,571 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:51:57,572 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:51:57,573 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:51:57,573 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:51:57,573 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b [2024-11-17 07:51:57,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:51:57,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:51:57,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:51:57,789 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:51:57,790 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:51:57,791 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2024-11-17 07:51:59,135 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:51:59,299 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:51:59,299 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2024-11-17 07:51:59,306 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2476a757f/7565945dc26d4306a69c7e3a7fcd3a18/FLAG36356bb27 [2024-11-17 07:51:59,318 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2476a757f/7565945dc26d4306a69c7e3a7fcd3a18 [2024-11-17 07:51:59,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:51:59,322 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:51:59,323 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:51:59,323 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:51:59,327 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:51:59,328 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:51:59" (1/1) ... [2024-11-17 07:51:59,328 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@630ce887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:59, skipping insertion in model container [2024-11-17 07:51:59,329 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:51:59" (1/1) ... [2024-11-17 07:51:59,350 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:51:59,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:51:59,525 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:51:59,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:51:59,638 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:51:59,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:59 WrapperNode [2024-11-17 07:51:59,638 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:51:59,639 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:51:59,639 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:51:59,639 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:51:59,644 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:59" (1/1) ... [2024-11-17 07:51:59,652 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:59" (1/1) ... [2024-11-17 07:51:59,685 INFO L138 Inliner]: procedures = 25, calls = 62, calls flagged for inlining = 29, calls inlined = 43, statements flattened = 731 [2024-11-17 07:51:59,685 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:51:59,685 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:51:59,685 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:51:59,686 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:51:59,692 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:59" (1/1) ... [2024-11-17 07:51:59,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:59" (1/1) ... [2024-11-17 07:51:59,697 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:59" (1/1) ... [2024-11-17 07:51:59,713 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-17 07:51:59,714 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:59" (1/1) ... [2024-11-17 07:51:59,714 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:59" (1/1) ... [2024-11-17 07:51:59,735 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:59" (1/1) ... [2024-11-17 07:51:59,736 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:59" (1/1) ... [2024-11-17 07:51:59,738 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:59" (1/1) ... [2024-11-17 07:51:59,746 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:59" (1/1) ... [2024-11-17 07:51:59,763 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:51:59,764 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:51:59,765 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:51:59,765 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:51:59,766 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:59" (1/1) ... [2024-11-17 07:51:59,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:51:59,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:51:59,789 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) [2024-11-17 07:51:59,804 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 [2024-11-17 07:51:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:51:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 07:51:59,837 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 07:51:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 07:51:59,837 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 07:51:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-17 07:51:59,837 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-17 07:51:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:51:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:51:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:51:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:51:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 07:51:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:51:59,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:51:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:51:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:51:59,841 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:51:59,949 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:51:59,950 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:52:00,667 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:52:00,668 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:52:01,090 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:52:01,090 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:52:01,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:52:01 BoogieIcfgContainer [2024-11-17 07:52:01,091 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:52:01,092 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:52:01,092 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:52:01,098 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:52:01,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:51:59" (1/3) ... [2024-11-17 07:52:01,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2d77d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:52:01, skipping insertion in model container [2024-11-17 07:52:01,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:51:59" (2/3) ... [2024-11-17 07:52:01,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2d77d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:52:01, skipping insertion in model container [2024-11-17 07:52:01,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:52:01" (3/3) ... [2024-11-17 07:52:01,101 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2024-11-17 07:52:01,116 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:52:01,116 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2024-11-17 07:52:01,116 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:52:01,304 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-17 07:52:01,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 257 transitions, 535 flow [2024-11-17 07:52:01,420 INFO L124 PetriNetUnfolderBase]: 42/254 cut-off events. [2024-11-17 07:52:01,421 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 07:52:01,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 254 events. 42/254 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1429 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 225. Up to 2 conditions per place. [2024-11-17 07:52:01,427 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 257 transitions, 535 flow [2024-11-17 07:52:01,435 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 252 transitions, 519 flow [2024-11-17 07:52:01,449 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:52:01,456 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;@339f8494, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:52:01,456 INFO L334 AbstractCegarLoop]: Starting to check reachability of 117 error locations. [2024-11-17 07:52:01,459 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:52:01,460 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-17 07:52:01,460 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:52:01,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:01,461 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 07:52:01,461 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2024-11-17 07:52:01,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:01,465 INFO L85 PathProgramCache]: Analyzing trace with hash 62469473, now seen corresponding path program 1 times [2024-11-17 07:52:01,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:01,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905732220] [2024-11-17 07:52:01,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:01,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:01,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:01,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:01,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905732220] [2024-11-17 07:52:01,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905732220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:01,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:01,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:52:01,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307581639] [2024-11-17 07:52:01,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:01,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:52:01,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:01,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:52:01,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:52:01,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 257 [2024-11-17 07:52:01,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 252 transitions, 519 flow. Second operand has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 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) [2024-11-17 07:52:01,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:01,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 257 [2024-11-17 07:52:01,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:16,963 INFO L124 PetriNetUnfolderBase]: 125329/224729 cut-off events. [2024-11-17 07:52:16,963 INFO L125 PetriNetUnfolderBase]: For 2477/2477 co-relation queries the response was YES. [2024-11-17 07:52:17,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387177 conditions, 224729 events. 125329/224729 cut-off events. For 2477/2477 co-relation queries the response was YES. Maximal size of possible extension queue 11449. Compared 2606348 event pairs, 82994 based on Foata normal form. 9/181388 useless extension candidates. Maximal degree in co-relation 381115. Up to 160494 conditions per place. [2024-11-17 07:52:18,592 INFO L140 encePairwiseOnDemand]: 235/257 looper letters, 119 selfloop transitions, 10 changer transitions 0/255 dead transitions. [2024-11-17 07:52:18,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 255 transitions, 783 flow [2024-11-17 07:52:18,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:52:18,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:52:18,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 660 transitions. [2024-11-17 07:52:18,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.642023346303502 [2024-11-17 07:52:18,610 INFO L175 Difference]: Start difference. First operand has 220 places, 252 transitions, 519 flow. Second operand 4 states and 660 transitions. [2024-11-17 07:52:18,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 255 transitions, 783 flow [2024-11-17 07:52:18,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 255 transitions, 774 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-17 07:52:18,660 INFO L231 Difference]: Finished difference. Result has 221 places, 255 transitions, 586 flow [2024-11-17 07:52:18,662 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=586, PETRI_PLACES=221, PETRI_TRANSITIONS=255} [2024-11-17 07:52:18,666 INFO L277 CegarLoopForPetriNet]: 220 programPoint places, 1 predicate places. [2024-11-17 07:52:18,666 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 255 transitions, 586 flow [2024-11-17 07:52:18,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 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) [2024-11-17 07:52:18,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:18,667 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-17 07:52:18,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:52:18,667 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2024-11-17 07:52:18,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:18,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1927455384, now seen corresponding path program 1 times [2024-11-17 07:52:18,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:18,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218801166] [2024-11-17 07:52:18,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:18,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:18,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:18,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:18,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218801166] [2024-11-17 07:52:18,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218801166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:52:18,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574630504] [2024-11-17 07:52:18,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:18,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:52:18,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:52:18,819 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) [2024-11-17 07:52:18,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:52:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:18,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:52:18,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:52:18,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:18,980 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:52:18,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574630504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:18,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:52:18,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:52:18,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213857737] [2024-11-17 07:52:18,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:18,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:52:18,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:18,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:52:18,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:52:19,009 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 257 [2024-11-17 07:52:19,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 255 transitions, 586 flow. Second operand has 6 states, 6 states have (on average 129.83333333333334) internal successors, (779), 6 states have internal predecessors, (779), 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) [2024-11-17 07:52:19,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:19,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 257 [2024-11-17 07:52:19,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:32,363 INFO L124 PetriNetUnfolderBase]: 125329/224726 cut-off events. [2024-11-17 07:52:32,364 INFO L125 PetriNetUnfolderBase]: For 637/637 co-relation queries the response was YES. [2024-11-17 07:52:32,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386531 conditions, 224726 events. 125329/224726 cut-off events. For 637/637 co-relation queries the response was YES. Maximal size of possible extension queue 11449. Compared 2606552 event pairs, 82994 based on Foata normal form. 3/181379 useless extension candidates. Maximal degree in co-relation 386452. Up to 160479 conditions per place. [2024-11-17 07:52:34,058 INFO L140 encePairwiseOnDemand]: 244/257 looper letters, 109 selfloop transitions, 17 changer transitions 0/252 dead transitions. [2024-11-17 07:52:34,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 252 transitions, 826 flow [2024-11-17 07:52:34,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:52:34,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:52:34,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 903 transitions. [2024-11-17 07:52:34,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.585603112840467 [2024-11-17 07:52:34,061 INFO L175 Difference]: Start difference. First operand has 221 places, 255 transitions, 586 flow. Second operand 6 states and 903 transitions. [2024-11-17 07:52:34,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 252 transitions, 826 flow [2024-11-17 07:52:34,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 252 transitions, 826 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:52:34,066 INFO L231 Difference]: Finished difference. Result has 223 places, 252 transitions, 608 flow [2024-11-17 07:52:34,067 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=608, PETRI_PLACES=223, PETRI_TRANSITIONS=252} [2024-11-17 07:52:34,067 INFO L277 CegarLoopForPetriNet]: 220 programPoint places, 3 predicate places. [2024-11-17 07:52:34,067 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 252 transitions, 608 flow [2024-11-17 07:52:34,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.83333333333334) internal successors, (779), 6 states have internal predecessors, (779), 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) [2024-11-17 07:52:34,068 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:34,068 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-17 07:52:34,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 07:52:34,271 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 [2024-11-17 07:52:34,272 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2024-11-17 07:52:34,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:34,273 INFO L85 PathProgramCache]: Analyzing trace with hash -378423358, now seen corresponding path program 1 times [2024-11-17 07:52:34,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:34,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181404732] [2024-11-17 07:52:34,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:34,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:34,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:34,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:34,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181404732] [2024-11-17 07:52:34,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181404732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:52:34,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116503096] [2024-11-17 07:52:34,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:34,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:52:34,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:52:34,346 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) [2024-11-17 07:52:34,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:52:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:34,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:52:34,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:52:34,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:34,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:52:34,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:34,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116503096] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:52:34,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:52:34,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-17 07:52:34,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723355040] [2024-11-17 07:52:34,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:52:34,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:52:34,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:34,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:52:34,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:52:34,569 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 257 [2024-11-17 07:52:34,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 252 transitions, 608 flow. Second operand has 12 states, 12 states have (on average 130.08333333333334) internal successors, (1561), 12 states have internal predecessors, (1561), 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) [2024-11-17 07:52:34,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:34,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 257 [2024-11-17 07:52:34,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand