./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-memsafety/fillarray1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version da043454 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-memsafety/fillarray1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 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 cbfe97464e8dd4b132635ad53d7bc5d5814efe993982dd3cf281d29e5362941c --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 11:26:00,106 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 11:26:00,156 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-04-29 11:26:00,162 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 11:26:00,164 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 11:26:00,182 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 11:26:00,184 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 11:26:00,184 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 11:26:00,184 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-29 11:26:00,184 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-29 11:26:00,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 11:26:00,185 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 11:26:00,185 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 11:26:00,185 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 11:26:00,186 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 11:26:00,186 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 11:26:00,186 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-29 11:26:00,186 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 11:26:00,186 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-29 11:26:00,186 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 11:26:00,186 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-04-29 11:26:00,186 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-04-29 11:26:00,186 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-04-29 11:26:00,186 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 11:26:00,187 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-04-29 11:26:00,187 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-29 11:26:00,187 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-29 11:26:00,187 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 11:26:00,187 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 11:26:00,187 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 11:26:00,187 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:26:00,187 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:26:00,187 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:26:00,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:26:00,188 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 11:26:00,188 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:26:00,188 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:26:00,188 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:26:00,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:26:00,188 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 11:26:00,188 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 11:26:00,188 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-29 11:26:00,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-29 11:26:00,189 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 11:26:00,189 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 11:26:00,189 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 11:26:00,189 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/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 -> cbfe97464e8dd4b132635ad53d7bc5d5814efe993982dd3cf281d29e5362941c [2025-04-29 11:26:00,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 11:26:00,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 11:26:00,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 11:26:00,414 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 11:26:00,414 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 11:26:00,415 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-memsafety/fillarray1.c [2025-04-29 11:26:01,608 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a4f62259/8b9b0ffc3f934ccebefb5ae883f5bc6e/FLAG4335edde8 [2025-04-29 11:26:01,804 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 11:26:01,805 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-memsafety/fillarray1.c [2025-04-29 11:26:01,806 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:26:01,806 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:26:01,810 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a4f62259/8b9b0ffc3f934ccebefb5ae883f5bc6e/FLAG4335edde8 [2025-04-29 11:26:02,609 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a4f62259/8b9b0ffc3f934ccebefb5ae883f5bc6e [2025-04-29 11:26:02,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 11:26:02,611 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 11:26:02,612 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 11:26:02,612 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 11:26:02,615 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 11:26:02,615 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:26:02" (1/1) ... [2025-04-29 11:26:02,617 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f078b7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:02, skipping insertion in model container [2025-04-29 11:26:02,617 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:26:02" (1/1) ... [2025-04-29 11:26:02,630 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 11:26:02,752 WARN L1150 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-04-29 11:26:02,768 WARN L1150 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-04-29 11:26:02,772 WARN L1150 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-04-29 11:26:02,781 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:26:02,791 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 11:26:02,819 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:26:02,833 INFO L204 MainTranslator]: Completed translation [2025-04-29 11:26:02,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:02 WrapperNode [2025-04-29 11:26:02,834 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 11:26:02,835 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 11:26:02,835 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 11:26:02,835 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 11:26:02,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:02" (1/1) ... [2025-04-29 11:26:02,845 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:02" (1/1) ... [2025-04-29 11:26:02,857 INFO L138 Inliner]: procedures = 10, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2025-04-29 11:26:02,858 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 11:26:02,858 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 11:26:02,858 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 11:26:02,858 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 11:26:02,864 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:02" (1/1) ... [2025-04-29 11:26:02,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:02" (1/1) ... [2025-04-29 11:26:02,869 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:02" (1/1) ... [2025-04-29 11:26:02,882 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2025-04-29 11:26:02,885 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:02" (1/1) ... [2025-04-29 11:26:02,886 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:02" (1/1) ... [2025-04-29 11:26:02,891 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:02" (1/1) ... [2025-04-29 11:26:02,892 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:02" (1/1) ... [2025-04-29 11:26:02,895 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:02" (1/1) ... [2025-04-29 11:26:02,897 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:02" (1/1) ... [2025-04-29 11:26:02,897 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:02" (1/1) ... [2025-04-29 11:26:02,904 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 11:26:02,905 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 11:26:02,905 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 11:26:02,905 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 11:26:02,906 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:02" (1/1) ... [2025-04-29 11:26:02,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:26:02,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:26:02,928 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) [2025-04-29 11:26:02,929 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 [2025-04-29 11:26:02,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-29 11:26:02,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-29 11:26:02,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 11:26:02,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 11:26:02,946 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-04-29 11:26:02,946 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-04-29 11:26:02,946 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-04-29 11:26:02,947 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-04-29 11:26:02,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-29 11:26:02,948 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-29 11:26:03,014 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 11:26:03,016 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 11:26:03,137 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-29 11:26:03,137 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 11:26:03,205 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 11:26:03,205 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-29 11:26:03,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:26:03 BoogieIcfgContainer [2025-04-29 11:26:03,206 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 11:26:03,207 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 11:26:03,207 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 11:26:03,211 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 11:26:03,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 11:26:02" (1/3) ... [2025-04-29 11:26:03,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32cce2cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:26:03, skipping insertion in model container [2025-04-29 11:26:03,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:02" (2/3) ... [2025-04-29 11:26:03,212 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32cce2cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:26:03, skipping insertion in model container [2025-04-29 11:26:03,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:26:03" (3/3) ... [2025-04-29 11:26:03,213 INFO L128 eAbstractionObserver]: Analyzing ICFG fillarray1.c [2025-04-29 11:26:03,222 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 11:26:03,223 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fillarray1.c that has 3 procedures, 29 locations, 31 edges, 1 initial locations, 4 loop locations, and 8 error locations. [2025-04-29 11:26:03,224 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-29 11:26:03,269 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-29 11:26:03,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 33 transitions, 74 flow [2025-04-29 11:26:03,314 INFO L116 PetriNetUnfolderBase]: 4/33 cut-off events. [2025-04-29 11:26:03,315 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:26:03,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 33 events. 4/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 70 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2025-04-29 11:26:03,317 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 33 transitions, 74 flow [2025-04-29 11:26:03,319 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 31 transitions, 68 flow [2025-04-29 11:26:03,324 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 11:26:03,332 INFO L340 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;@43bcaf73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 11:26:03,332 INFO L341 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2025-04-29 11:26:03,335 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-29 11:26:03,335 INFO L116 PetriNetUnfolderBase]: 0/4 cut-off events. [2025-04-29 11:26:03,335 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:26:03,336 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:26:03,337 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-04-29 11:26:03,337 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-04-29 11:26:03,340 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:26:03,341 INFO L85 PathProgramCache]: Analyzing trace with hash 217528, now seen corresponding path program 1 times [2025-04-29 11:26:03,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:26:03,346 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208335209] [2025-04-29 11:26:03,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:26:03,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:26:03,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-29 11:26:03,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-29 11:26:03,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:26:03,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:26:03,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:26:03,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:26:03,461 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208335209] [2025-04-29 11:26:03,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208335209] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:26:03,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:26:03,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-29 11:26:03,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89585719] [2025-04-29 11:26:03,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:26:03,471 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:26:03,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:26:03,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:26:03,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:26:03,519 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2025-04-29 11:26:03,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2025-04-29 11:26:03,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:26:03,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2025-04-29 11:26:03,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:26:03,629 INFO L116 PetriNetUnfolderBase]: 137/288 cut-off events. [2025-04-29 11:26:03,629 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:26:03,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 505 conditions, 288 events. 137/288 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1344 event pairs, 87 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 489. Up to 161 conditions per place. [2025-04-29 11:26:03,637 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 18 selfloop transitions, 3 changer transitions 2/38 dead transitions. [2025-04-29 11:26:03,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 128 flow [2025-04-29 11:26:03,639 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:26:03,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:26:03,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2025-04-29 11:26:03,646 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2025-04-29 11:26:03,647 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 68 flow. Second operand 3 states and 75 transitions. [2025-04-29 11:26:03,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 128 flow [2025-04-29 11:26:03,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 38 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-29 11:26:03,652 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 75 flow [2025-04-29 11:26:03,654 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2025-04-29 11:26:03,656 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2025-04-29 11:26:03,656 INFO L485 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 75 flow [2025-04-29 11:26:03,656 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2025-04-29 11:26:03,656 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:26:03,656 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:26:03,657 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-29 11:26:03,657 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-04-29 11:26:03,657 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:26:03,657 INFO L85 PathProgramCache]: Analyzing trace with hash -969415369, now seen corresponding path program 1 times [2025-04-29 11:26:03,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:26:03,657 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856111675] [2025-04-29 11:26:03,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:26:03,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:26:03,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-29 11:26:03,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-29 11:26:03,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:26:03,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:26:03,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:26:03,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:26:03,805 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856111675] [2025-04-29 11:26:03,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856111675] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:26:03,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:26:03,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-29 11:26:03,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282297619] [2025-04-29 11:26:03,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:26:03,806 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-29 11:26:03,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:26:03,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-29 11:26:03,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-29 11:26:03,841 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2025-04-29 11:26:03,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-04-29 11:26:03,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:26:03,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2025-04-29 11:26:03,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:26:04,004 INFO L116 PetriNetUnfolderBase]: 217/397 cut-off events. [2025-04-29 11:26:04,005 INFO L117 PetriNetUnfolderBase]: For 66/82 co-relation queries the response was YES. [2025-04-29 11:26:04,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 397 events. 217/397 cut-off events. For 66/82 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1631 event pairs, 15 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 772. Up to 132 conditions per place. [2025-04-29 11:26:04,008 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 31 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2025-04-29 11:26:04,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 50 transitions, 194 flow [2025-04-29 11:26:04,009 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-29 11:26:04,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-29 11:26:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2025-04-29 11:26:04,010 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6616161616161617 [2025-04-29 11:26:04,010 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 75 flow. Second operand 6 states and 131 transitions. [2025-04-29 11:26:04,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 50 transitions, 194 flow [2025-04-29 11:26:04,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 180 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-04-29 11:26:04,018 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 98 flow [2025-04-29 11:26:04,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=98, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2025-04-29 11:26:04,018 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2025-04-29 11:26:04,018 INFO L485 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 98 flow [2025-04-29 11:26:04,018 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-04-29 11:26:04,018 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:26:04,018 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:26:04,019 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-29 11:26:04,019 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-04-29 11:26:04,019 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:26:04,019 INFO L85 PathProgramCache]: Analyzing trace with hash -969415368, now seen corresponding path program 1 times [2025-04-29 11:26:04,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:26:04,019 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754862666] [2025-04-29 11:26:04,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:26:04,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:26:04,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-29 11:26:04,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-29 11:26:04,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:26:04,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:26:04,050 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-29 11:26:04,055 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-29 11:26:04,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-29 11:26:04,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:26:04,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:26:04,079 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-29 11:26:04,080 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-29 11:26:04,080 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2025-04-29 11:26:04,081 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (12 of 14 remaining) [2025-04-29 11:26:04,082 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE (11 of 14 remaining) [2025-04-29 11:26:04,082 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (10 of 14 remaining) [2025-04-29 11:26:04,082 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (9 of 14 remaining) [2025-04-29 11:26:04,082 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 14 remaining) [2025-04-29 11:26:04,082 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 14 remaining) [2025-04-29 11:26:04,082 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2025-04-29 11:26:04,082 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2025-04-29 11:26:04,082 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2025-04-29 11:26:04,082 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2025-04-29 11:26:04,083 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2025-04-29 11:26:04,083 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2025-04-29 11:26:04,083 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 14 remaining) [2025-04-29 11:26:04,083 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-29 11:26:04,083 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-04-29 11:26:04,116 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-29 11:26:04,117 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 11:26:04,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 11:26:04 BasicIcfg [2025-04-29 11:26:04,123 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 11:26:04,124 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 11:26:04,124 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 11:26:04,124 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 11:26:04,125 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:26:03" (3/4) ... [2025-04-29 11:26:04,126 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-04-29 11:26:04,166 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 4. [2025-04-29 11:26:04,201 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-29 11:26:04,202 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-29 11:26:04,202 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 11:26:04,202 INFO L158 Benchmark]: Toolchain (without parser) took 1591.13ms. Allocated memory is still 167.8MB. Free memory was 122.9MB in the beginning and 90.4MB in the end (delta: 32.5MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. [2025-04-29 11:26:04,203 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 117.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:26:04,203 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.84ms. Allocated memory is still 167.8MB. Free memory was 122.9MB in the beginning and 109.0MB in the end (delta: 14.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 11:26:04,204 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.05ms. Allocated memory is still 167.8MB. Free memory was 109.0MB in the beginning and 107.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:26:04,204 INFO L158 Benchmark]: Boogie Preprocessor took 46.16ms. Allocated memory is still 167.8MB. Free memory was 107.2MB in the beginning and 105.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:26:04,205 INFO L158 Benchmark]: RCFGBuilder took 301.25ms. Allocated memory is still 167.8MB. Free memory was 105.5MB in the beginning and 82.9MB in the end (delta: 22.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-04-29 11:26:04,205 INFO L158 Benchmark]: TraceAbstraction took 916.19ms. Allocated memory is still 167.8MB. Free memory was 82.1MB in the beginning and 96.9MB in the end (delta: -14.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:26:04,205 INFO L158 Benchmark]: Witness Printer took 77.86ms. Allocated memory is still 167.8MB. Free memory was 96.9MB in the beginning and 90.4MB in the end (delta: 6.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:26:04,206 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 117.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.84ms. Allocated memory is still 167.8MB. Free memory was 122.9MB in the beginning and 109.0MB in the end (delta: 14.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.05ms. Allocated memory is still 167.8MB. Free memory was 109.0MB in the beginning and 107.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.16ms. Allocated memory is still 167.8MB. Free memory was 107.2MB in the beginning and 105.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 301.25ms. Allocated memory is still 167.8MB. Free memory was 105.5MB in the beginning and 82.9MB in the end (delta: 22.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 916.19ms. Allocated memory is still 167.8MB. Free memory was 82.1MB in the beginning and 96.9MB in the end (delta: -14.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 77.86ms. Allocated memory is still 167.8MB. Free memory was 96.9MB in the beginning and 90.4MB in the end (delta: 6.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L6] 0 int size; [L7] 0 int ind; [L8] 0 int j = 2, i = 1; [L9] 0 int x, y, z; [L43] 0 size = __VERIFIER_nondet_int() [L45] COND FALSE 0 !(size < 1 || size > 20) [L49] 0 int *a = (int *)malloc(size); [L50] 0 pthread_t id1, id2; [L52] 0 ind = 0 [L54] FCALL, FORK 0 pthread_create(&id1, NULL, t1, a) VAL [\at(arg, Pre)={-2:0}, \at(argc, Pre)=3, \at(argv, Pre)={4:5}, a={-2:0}, argc=3, i=1, id1=-1, ind=0, j=2, size=2, x=0, y=0, z=0] [L12] 1 x = 1 [L13] 1 y = 1 [L14] 1 int *a = (int *)arg; VAL [\at(arg, Pre)={-2:0}, a={-2:0}, arg={-2:0}, i=1, ind=0, j=2, size=2, x=1, y=1, z=0] [L15] COND FALSE 1 !(y == 1 && z) VAL [\at(arg, Pre)={-2:0}, a={-2:0}, arg={-2:0}, i=1, ind=0, j=2, size=2, x=1, y=1, z=0] [L17] COND TRUE 1 ind < size - 1 [L18] 1 ++ind VAL [\at(arg, Pre)={-2:0}, a={-2:0}, arg={-2:0}, i=1, ind=1, j=2, size=2, x=1, y=1, z=0] [L19] 1 a[ind] = i - UnprovableResult [Line: 41]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 54]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 55]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 45 locations, 51 edges, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 95 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 163 IncrementalHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 163 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=2, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2025-04-29 11:26:04,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)