./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:38:30,893 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:38:30,948 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:38:30,953 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:38:30,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:38:30,969 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:38:30,970 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:38:30,970 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:38:30,971 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:38:30,971 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:38:30,972 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:38:30,972 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:38:30,972 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:38:30,972 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:38:30,972 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:38:30,973 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:38:30,973 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:38:30,973 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:38:30,973 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:38:30,973 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:38:30,973 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:38:30,973 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:38:30,973 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:38:30,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:38:30,973 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:38:30,973 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:38:30,974 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:38:30,974 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:38:30,974 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:38:30,974 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:38:30,974 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:38:30,974 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:38:30,974 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:38:30,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:38:30,975 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:38:30,975 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:38:30,975 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:38:30,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:38:30,975 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:38:30,975 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:38:30,975 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:38:30,975 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:38:30,975 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2025-02-08 08:38:31,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:38:31,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:38:31,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:38:31,202 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:38:31,202 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:38:31,203 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2025-02-08 08:38:32,310 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f0f7113d5/7324a25b923849b8b03a915f8f74762f/FLAGb206f3998 [2025-02-08 08:38:32,524 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:38:32,524 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2025-02-08 08:38:32,554 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f0f7113d5/7324a25b923849b8b03a915f8f74762f/FLAGb206f3998 [2025-02-08 08:38:32,881 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f0f7113d5/7324a25b923849b8b03a915f8f74762f [2025-02-08 08:38:32,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:38:32,885 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:38:32,886 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:38:32,886 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:38:32,889 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:38:32,891 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:38:32" (1/1) ... [2025-02-08 08:38:32,892 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ad5a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:32, skipping insertion in model container [2025-02-08 08:38:32,893 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:38:32" (1/1) ... [2025-02-08 08:38:32,910 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:38:33,053 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:38:33,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:38:33,062 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:38:33,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:38:33,110 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:38:33,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:33 WrapperNode [2025-02-08 08:38:33,111 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:38:33,111 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:38:33,111 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:38:33,111 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:38:33,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:33" (1/1) ... [2025-02-08 08:38:33,123 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:33" (1/1) ... [2025-02-08 08:38:33,147 INFO L138 Inliner]: procedures = 25, calls = 74, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 447 [2025-02-08 08:38:33,148 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:38:33,148 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:38:33,148 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:38:33,149 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:38:33,159 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:33" (1/1) ... [2025-02-08 08:38:33,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:33" (1/1) ... [2025-02-08 08:38:33,162 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:33" (1/1) ... [2025-02-08 08:38:33,176 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2025-02-08 08:38:33,179 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:33" (1/1) ... [2025-02-08 08:38:33,180 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:33" (1/1) ... [2025-02-08 08:38:33,187 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:33" (1/1) ... [2025-02-08 08:38:33,189 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:33" (1/1) ... [2025-02-08 08:38:33,190 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:33" (1/1) ... [2025-02-08 08:38:33,196 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:33" (1/1) ... [2025-02-08 08:38:33,199 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:38:33,200 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:38:33,202 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:38:33,202 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:38:33,203 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:33" (1/1) ... [2025-02-08 08:38:33,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:38:33,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:38:33,226 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 08:38:33,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 08:38:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:38:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 08:38:33,244 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 08:38:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 08:38:33,244 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 08:38:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 08:38:33,244 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 08:38:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-08 08:38:33,244 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-08 08:38:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:38:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 08:38:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 08:38:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 08:38:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 08:38:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 08:38:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 08:38:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:38:33,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:38:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 08:38:33,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 08:38:33,246 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 08:38:33,343 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:38:33,344 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:38:33,917 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:38:33,917 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:38:34,226 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:38:34,226 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:38:34,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:38:34 BoogieIcfgContainer [2025-02-08 08:38:34,226 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:38:34,228 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:38:34,228 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:38:34,231 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:38:34,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:38:32" (1/3) ... [2025-02-08 08:38:34,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392a7cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:38:34, skipping insertion in model container [2025-02-08 08:38:34,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:38:33" (2/3) ... [2025-02-08 08:38:34,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392a7cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:38:34, skipping insertion in model container [2025-02-08 08:38:34,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:38:34" (3/3) ... [2025-02-08 08:38:34,232 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2025-02-08 08:38:34,242 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:38:34,243 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-commit-2.wvr-bad.c that has 5 procedures, 99 locations, 1 initial locations, 8 loop locations, and 34 error locations. [2025-02-08 08:38:34,243 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:38:34,307 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-08 08:38:34,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 122 transitions, 272 flow [2025-02-08 08:38:34,375 INFO L124 PetriNetUnfolderBase]: 24/118 cut-off events. [2025-02-08 08:38:34,377 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 08:38:34,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 118 events. 24/118 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 376 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 98. Up to 8 conditions per place. [2025-02-08 08:38:34,383 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 122 transitions, 272 flow [2025-02-08 08:38:34,386 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 117 transitions, 258 flow [2025-02-08 08:38:34,394 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:38:34,404 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=None, 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;@66a10971, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:38:34,404 INFO L334 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2025-02-08 08:38:34,408 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:38:34,408 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2025-02-08 08:38:34,408 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:38:34,408 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:38:34,409 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 08:38:34,409 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2025-02-08 08:38:34,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:38:34,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1262380, now seen corresponding path program 1 times [2025-02-08 08:38:34,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:38:34,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563387515] [2025-02-08 08:38:34,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:38:34,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:38:34,469 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 08:38:34,489 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 08:38:34,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:38:34,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:38:34,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:38:34,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:38:34,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563387515] [2025-02-08 08:38:34,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563387515] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:38:34,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:38:34,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:38:34,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949352918] [2025-02-08 08:38:34,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:38:34,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:38:34,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:38:34,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:38:34,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:38:34,655 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 122 [2025-02-08 08:38:34,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 117 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2025-02-08 08:38:34,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:38:34,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 122 [2025-02-08 08:38:34,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:38:42,973 INFO L124 PetriNetUnfolderBase]: 118659/157199 cut-off events. [2025-02-08 08:38:42,974 INFO L125 PetriNetUnfolderBase]: For 3384/3384 co-relation queries the response was YES. [2025-02-08 08:38:43,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305223 conditions, 157199 events. 118659/157199 cut-off events. For 3384/3384 co-relation queries the response was YES. Maximal size of possible extension queue 12498. Compared 1183189 event pairs, 87208 based on Foata normal form. 1/82026 useless extension candidates. Maximal degree in co-relation 297480. Up to 144091 conditions per place. [2025-02-08 08:38:43,895 INFO L140 encePairwiseOnDemand]: 111/122 looper letters, 76 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2025-02-08 08:38:43,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 107 transitions, 394 flow [2025-02-08 08:38:43,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:38:43,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:38:43,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2025-02-08 08:38:43,904 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5163934426229508 [2025-02-08 08:38:43,905 INFO L175 Difference]: Start difference. First operand has 106 places, 117 transitions, 258 flow. Second operand 3 states and 189 transitions. [2025-02-08 08:38:43,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 107 transitions, 394 flow [2025-02-08 08:38:43,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 107 transitions, 378 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-02-08 08:38:43,979 INFO L231 Difference]: Finished difference. Result has 94 places, 107 transitions, 226 flow [2025-02-08 08:38:43,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=94, PETRI_TRANSITIONS=107} [2025-02-08 08:38:43,984 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -12 predicate places. [2025-02-08 08:38:43,984 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 107 transitions, 226 flow [2025-02-08 08:38:43,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2025-02-08 08:38:43,984 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:38:43,984 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 08:38:43,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:38:43,985 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2025-02-08 08:38:43,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:38:43,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1262381, now seen corresponding path program 1 times [2025-02-08 08:38:43,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:38:43,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901982982] [2025-02-08 08:38:43,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:38:43,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:38:43,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 08:38:44,012 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 08:38:44,012 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:38:44,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:38:44,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:38:44,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:38:44,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901982982] [2025-02-08 08:38:44,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901982982] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:38:44,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:38:44,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:38:44,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364162314] [2025-02-08 08:38:44,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:38:44,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:38:44,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:38:44,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:38:44,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:38:44,242 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 122 [2025-02-08 08:38:44,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 107 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2025-02-08 08:38:44,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:38:44,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 122 [2025-02-08 08:38:44,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:38:52,380 INFO L124 PetriNetUnfolderBase]: 118663/157211 cut-off events. [2025-02-08 08:38:52,380 INFO L125 PetriNetUnfolderBase]: For 585/585 co-relation queries the response was YES. [2025-02-08 08:38:52,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302883 conditions, 157211 events. 118663/157211 cut-off events. For 585/585 co-relation queries the response was YES. Maximal size of possible extension queue 12498. Compared 1184549 event pairs, 87208 based on Foata normal form. 0/82031 useless extension candidates. Maximal degree in co-relation 302819. Up to 144108 conditions per place. [2025-02-08 08:38:53,194 INFO L140 encePairwiseOnDemand]: 105/122 looper letters, 81 selfloop transitions, 13 changer transitions 0/119 dead transitions. [2025-02-08 08:38:53,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 119 transitions, 440 flow [2025-02-08 08:38:53,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:38:53,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 08:38:53,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 234 transitions. [2025-02-08 08:38:53,196 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47950819672131145 [2025-02-08 08:38:53,196 INFO L175 Difference]: Start difference. First operand has 94 places, 107 transitions, 226 flow. Second operand 4 states and 234 transitions. [2025-02-08 08:38:53,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 119 transitions, 440 flow [2025-02-08 08:38:53,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 119 transitions, 434 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:38:53,199 INFO L231 Difference]: Finished difference. Result has 98 places, 119 transitions, 330 flow [2025-02-08 08:38:53,199 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=330, PETRI_PLACES=98, PETRI_TRANSITIONS=119} [2025-02-08 08:38:53,200 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -8 predicate places. [2025-02-08 08:38:53,200 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 119 transitions, 330 flow [2025-02-08 08:38:53,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2025-02-08 08:38:53,200 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:38:53,200 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2025-02-08 08:38:53,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 08:38:53,200 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2025-02-08 08:38:53,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:38:53,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1213186208, now seen corresponding path program 1 times [2025-02-08 08:38:53,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:38:53,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738534714] [2025-02-08 08:38:53,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:38:53,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:38:53,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 08:38:53,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 08:38:53,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:38:53,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:38:53,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:38:53,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:38:53,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738534714] [2025-02-08 08:38:53,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738534714] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:38:53,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737038233] [2025-02-08 08:38:53,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:38:53,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:38:53,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:38:53,457 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:38:53,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 08:38:53,510 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 08:38:53,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 08:38:53,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:38:53,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:38:53,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 08:38:53,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:38:53,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2025-02-08 08:38:53,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:38:53,740 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:38:53,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:38:53,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737038233] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:38:53,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:38:53,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2025-02-08 08:38:53,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899476470] [2025-02-08 08:38:53,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:38:53,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 08:38:53,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:38:53,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 08:38:53,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-02-08 08:38:53,905 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 122 [2025-02-08 08:38:53,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 119 transitions, 330 flow. Second operand has 11 states, 11 states have (on average 35.36363636363637) internal successors, (389), 11 states have internal predecessors, (389), 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) [2025-02-08 08:38:53,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:38:53,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 122 [2025-02-08 08:38:53,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand