./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-nzb-file-subst.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 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:22:26,927 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:22:26,996 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:22:27,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:22:27,004 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:22:27,027 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:22:27,028 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:22:27,028 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:22:27,029 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:22:27,029 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:22:27,030 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:22:27,030 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:22:27,030 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:22:27,031 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:22:27,031 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:22:27,033 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:22:27,034 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:22:27,034 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:22:27,035 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:22:27,035 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:22:27,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:22:27,036 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:22:27,036 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:22:27,036 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:22:27,037 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:22:27,037 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:22:27,037 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:22:27,038 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:22:27,038 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:22:27,038 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:22:27,039 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:22:27,039 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:22:27,039 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:22:27,040 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:22:27,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:22:27,040 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:22:27,041 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:22:27,041 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:22:27,041 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:22:27,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:22:27,042 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:22:27,042 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:22:27,043 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:22:27,043 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:22:27,043 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 [2024-11-10 22:22:27,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:22:27,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:22:27,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:22:27,394 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:22:27,394 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:22:27,396 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2024-11-10 22:22:28,834 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:22:29,018 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:22:29,019 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2024-11-10 22:22:29,028 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afbb2601d/51e45a527b704d7596e1d5e83b191033/FLAGbf94a5e81 [2024-11-10 22:22:29,044 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afbb2601d/51e45a527b704d7596e1d5e83b191033 [2024-11-10 22:22:29,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:22:29,049 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:22:29,052 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:22:29,052 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:22:29,057 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:22:29,057 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:22:29" (1/1) ... [2024-11-10 22:22:29,058 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42c09585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:29, skipping insertion in model container [2024-11-10 22:22:29,058 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:22:29" (1/1) ... [2024-11-10 22:22:29,083 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:22:29,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:22:29,444 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:22:29,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:22:29,515 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:22:29,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:29 WrapperNode [2024-11-10 22:22:29,515 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:22:29,516 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:22:29,516 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:22:29,516 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:22:29,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:29" (1/1) ... [2024-11-10 22:22:29,538 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:29" (1/1) ... [2024-11-10 22:22:29,586 INFO L138 Inliner]: procedures = 25, calls = 62, calls flagged for inlining = 29, calls inlined = 43, statements flattened = 731 [2024-11-10 22:22:29,587 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:22:29,588 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:22:29,588 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:22:29,588 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:22:29,599 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:29" (1/1) ... [2024-11-10 22:22:29,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:29" (1/1) ... [2024-11-10 22:22:29,611 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:29" (1/1) ... [2024-11-10 22:22:29,657 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]. [2024-11-10 22:22:29,658 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:29" (1/1) ... [2024-11-10 22:22:29,658 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:29" (1/1) ... [2024-11-10 22:22:29,687 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:29" (1/1) ... [2024-11-10 22:22:29,693 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:29" (1/1) ... [2024-11-10 22:22:29,696 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:29" (1/1) ... [2024-11-10 22:22:29,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:29" (1/1) ... [2024-11-10 22:22:29,715 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:22:29,716 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:22:29,716 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:22:29,716 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:22:29,721 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:29" (1/1) ... [2024-11-10 22:22:29,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:22:29,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:29,760 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 22:22:29,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 22:22:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:22:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:22:29,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:22:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:22:29,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:22:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 22:22:29,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 22:22:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:22:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:22:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:22:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:22:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:22:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:22:29,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:22:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:22:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:22:29,827 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:22:30,006 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:22:30,009 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:22:31,020 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:22:31,021 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:22:31,644 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:22:31,645 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:22:31,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:22:31 BoogieIcfgContainer [2024-11-10 22:22:31,646 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:22:31,650 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:22:31,650 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:22:31,653 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:22:31,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:22:29" (1/3) ... [2024-11-10 22:22:31,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6368d340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:22:31, skipping insertion in model container [2024-11-10 22:22:31,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:29" (2/3) ... [2024-11-10 22:22:31,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6368d340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:22:31, skipping insertion in model container [2024-11-10 22:22:31,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:22:31" (3/3) ... [2024-11-10 22:22:31,658 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2024-11-10 22:22:31,678 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:22:31,678 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2024-11-10 22:22:31,678 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:22:31,866 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 22:22:31,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 257 transitions, 535 flow [2024-11-10 22:22:32,043 INFO L124 PetriNetUnfolderBase]: 42/254 cut-off events. [2024-11-10 22:22:32,044 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 22:22:32,057 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. [2024-11-10 22:22:32,058 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 257 transitions, 535 flow [2024-11-10 22:22:32,071 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 252 transitions, 519 flow [2024-11-10 22:22:32,086 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:22:32,097 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;@34cfe08a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:22:32,098 INFO L334 AbstractCegarLoop]: Starting to check reachability of 117 error locations. [2024-11-10 22:22:32,126 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:22:32,127 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-10 22:22:32,127 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:22:32,128 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:32,129 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 22:22:32,130 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2024-11-10 22:22:32,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:32,136 INFO L85 PathProgramCache]: Analyzing trace with hash 62469473, now seen corresponding path program 1 times [2024-11-10 22:22:32,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:32,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573248105] [2024-11-10 22:22:32,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:32,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:32,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:22:32,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:32,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573248105] [2024-11-10 22:22:32,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573248105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:32,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:22:32,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:22:32,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685765140] [2024-11-10 22:22:32,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:32,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:22:32,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:32,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:22:32,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:22:32,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 257 [2024-11-10 22:22:32,633 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) [2024-11-10 22:22:32,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:32,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 257 [2024-11-10 22:22:32,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:49,900 INFO L124 PetriNetUnfolderBase]: 125329/224729 cut-off events. [2024-11-10 22:22:49,900 INFO L125 PetriNetUnfolderBase]: For 2477/2477 co-relation queries the response was YES. [2024-11-10 22:22:50,484 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. [2024-11-10 22:22:52,034 INFO L140 encePairwiseOnDemand]: 235/257 looper letters, 119 selfloop transitions, 10 changer transitions 0/255 dead transitions. [2024-11-10 22:22:52,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 255 transitions, 783 flow [2024-11-10 22:22:52,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:22:52,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:22:52,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 660 transitions. [2024-11-10 22:22:52,050 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.642023346303502 [2024-11-10 22:22:52,052 INFO L175 Difference]: Start difference. First operand has 220 places, 252 transitions, 519 flow. Second operand 4 states and 660 transitions. [2024-11-10 22:22:52,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 255 transitions, 783 flow [2024-11-10 22:22:52,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 255 transitions, 774 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:22:52,133 INFO L231 Difference]: Finished difference. Result has 221 places, 255 transitions, 586 flow [2024-11-10 22:22:52,136 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} [2024-11-10 22:22:52,140 INFO L277 CegarLoopForPetriNet]: 220 programPoint places, 1 predicate places. [2024-11-10 22:22:52,140 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 255 transitions, 586 flow [2024-11-10 22:22:52,141 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) [2024-11-10 22:22:52,141 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:52,142 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 22:22:52,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:22:52,143 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2024-11-10 22:22:52,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:52,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1927455384, now seen corresponding path program 1 times [2024-11-10 22:22:52,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:52,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993967039] [2024-11-10 22:22:52,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:52,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:52,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:22:52,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:52,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993967039] [2024-11-10 22:22:52,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993967039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:52,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412881466] [2024-11-10 22:22:52,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:52,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:52,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:52,319 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:22:52,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:22:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:52,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:22:52,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:52,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:22:52,525 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:22:52,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412881466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:52,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:22:52,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:22:52,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993055502] [2024-11-10 22:22:52,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:52,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:22:52,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:52,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:22:52,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:22:52,569 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 257 [2024-11-10 22:22:52,571 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) [2024-11-10 22:22:52,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:52,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 257 [2024-11-10 22:22:52,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:07,521 INFO L124 PetriNetUnfolderBase]: 125329/224726 cut-off events. [2024-11-10 22:23:07,521 INFO L125 PetriNetUnfolderBase]: For 637/637 co-relation queries the response was YES. [2024-11-10 22:23:08,133 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. [2024-11-10 22:23:09,481 INFO L140 encePairwiseOnDemand]: 244/257 looper letters, 109 selfloop transitions, 17 changer transitions 0/252 dead transitions. [2024-11-10 22:23:09,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 252 transitions, 826 flow [2024-11-10 22:23:09,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:23:09,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:23:09,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 903 transitions. [2024-11-10 22:23:09,485 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.585603112840467 [2024-11-10 22:23:09,485 INFO L175 Difference]: Start difference. First operand has 221 places, 255 transitions, 586 flow. Second operand 6 states and 903 transitions. [2024-11-10 22:23:09,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 252 transitions, 826 flow [2024-11-10 22:23:09,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 252 transitions, 826 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:23:09,494 INFO L231 Difference]: Finished difference. Result has 223 places, 252 transitions, 608 flow [2024-11-10 22:23:09,495 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} [2024-11-10 22:23:09,495 INFO L277 CegarLoopForPetriNet]: 220 programPoint places, 3 predicate places. [2024-11-10 22:23:09,496 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 252 transitions, 608 flow [2024-11-10 22:23:09,496 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) [2024-11-10 22:23:09,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:09,497 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-10 22:23:09,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 22:23:09,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:09,702 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2024-11-10 22:23:09,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:09,703 INFO L85 PathProgramCache]: Analyzing trace with hash -378423358, now seen corresponding path program 1 times [2024-11-10 22:23:09,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:09,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199493129] [2024-11-10 22:23:09,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:09,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:09,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:09,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:09,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199493129] [2024-11-10 22:23:09,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199493129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:23:09,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153679215] [2024-11-10 22:23:09,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:09,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:09,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:09,858 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:23:09,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:23:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:09,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:23:09,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:23:10,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:10,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:23:10,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:10,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153679215] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:23:10,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:23:10,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:23:10,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994170398] [2024-11-10 22:23:10,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:23:10,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:23:10,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:10,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:23:10,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:23:10,154 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 257 [2024-11-10 22:23:10,156 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) [2024-11-10 22:23:10,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:10,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 257 [2024-11-10 22:23:10,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand