./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_08-tricky_address3.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/goblint-regression/06-symbeq_08-tricky_address3.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 28b3bab484555e9055546754c9232dcacfc14ffc38dad13c847fa435ed7ff870 --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 11:15:44,418 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 11:15:44,471 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-04-29 11:15:44,476 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 11:15:44,476 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 11:15:44,494 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 11:15:44,496 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 11:15:44,496 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 11:15:44,496 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-29 11:15:44,497 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-29 11:15:44,497 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 11:15:44,497 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 11:15:44,498 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 11:15:44,498 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 11:15:44,498 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 11:15:44,498 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 11:15:44,498 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-29 11:15:44,498 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 11:15:44,498 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-29 11:15:44,498 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 11:15:44,498 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-04-29 11:15:44,498 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-04-29 11:15:44,498 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-04-29 11:15:44,498 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 11:15:44,498 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-04-29 11:15:44,498 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-29 11:15:44,498 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-29 11:15:44,498 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 11:15:44,498 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 11:15:44,498 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 11:15:44,499 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:15:44,499 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:15:44,499 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:15:44,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:15:44,499 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 11:15:44,499 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:15:44,499 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:15:44,499 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:15:44,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:15:44,499 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 11:15:44,499 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 11:15:44,499 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-29 11:15:44,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-29 11:15:44,499 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 11:15:44,499 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 11:15:44,499 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 11:15:44,499 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 -> 28b3bab484555e9055546754c9232dcacfc14ffc38dad13c847fa435ed7ff870 [2025-04-29 11:15:44,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 11:15:44,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 11:15:44,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 11:15:44,752 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 11:15:44,752 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 11:15:44,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_08-tricky_address3.c [2025-04-29 11:15:46,749 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6050e4f2f/7e707fa38fb04a92b190f289d27a3132/FLAG2b72da9b3 [2025-04-29 11:15:46,970 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 11:15:46,971 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_08-tricky_address3.c [2025-04-29 11:15:46,972 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:15:46,972 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:15:46,977 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6050e4f2f/7e707fa38fb04a92b190f289d27a3132/FLAG2b72da9b3 [2025-04-29 11:15:47,799 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6050e4f2f/7e707fa38fb04a92b190f289d27a3132 [2025-04-29 11:15:47,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 11:15:47,802 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 11:15:47,803 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 11:15:47,805 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 11:15:47,808 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 11:15:47,808 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:15:47" (1/1) ... [2025-04-29 11:15:47,809 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f22768f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:15:47, skipping insertion in model container [2025-04-29 11:15:47,809 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:15:47" (1/1) ... [2025-04-29 11:15:47,823 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 11:15:47,993 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:15:48,007 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 11:15:48,034 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:15:48,054 INFO L204 MainTranslator]: Completed translation [2025-04-29 11:15:48,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:15:48 WrapperNode [2025-04-29 11:15:48,056 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 11:15:48,057 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 11:15:48,057 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 11:15:48,057 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 11:15:48,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:15:48" (1/1) ... [2025-04-29 11:15:48,072 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:15:48" (1/1) ... [2025-04-29 11:15:48,092 INFO L138 Inliner]: procedures = 14, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 87 [2025-04-29 11:15:48,096 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 11:15:48,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 11:15:48,096 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 11:15:48,096 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 11:15:48,106 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:15:48" (1/1) ... [2025-04-29 11:15:48,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:15:48" (1/1) ... [2025-04-29 11:15:48,109 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:15:48" (1/1) ... [2025-04-29 11:15:48,131 INFO L175 MemorySlicer]: Split 24 memory accesses to 1 slices as follows [24]. 100 percent of accesses are in the largest equivalence class. The 20 initializations are split as follows [20]. The 2 writes are split as follows [2]. [2025-04-29 11:15:48,131 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:15:48" (1/1) ... [2025-04-29 11:15:48,131 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:15:48" (1/1) ... [2025-04-29 11:15:48,138 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:15:48" (1/1) ... [2025-04-29 11:15:48,141 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:15:48" (1/1) ... [2025-04-29 11:15:48,143 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:15:48" (1/1) ... [2025-04-29 11:15:48,147 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:15:48" (1/1) ... [2025-04-29 11:15:48,147 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:15:48" (1/1) ... [2025-04-29 11:15:48,153 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 11:15:48,154 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 11:15:48,154 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 11:15:48,154 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 11:15:48,155 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:15:48" (1/1) ... [2025-04-29 11:15:48,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:15:48,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:15:48,182 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 11:15:48,186 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 11:15:48,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-29 11:15:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-29 11:15:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-29 11:15:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-29 11:15:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-29 11:15:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 11:15:48,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 11:15:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-29 11:15:48,209 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-04-29 11:15:48,209 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-04-29 11:15:48,210 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 11:15:48,272 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 11:15:48,273 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 11:15:48,432 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-29 11:15:48,432 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 11:15:48,555 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 11:15:48,557 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-29 11:15:48,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:15:48 BoogieIcfgContainer [2025-04-29 11:15:48,558 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 11:15:48,559 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 11:15:48,559 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 11:15:48,563 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 11:15:48,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 11:15:47" (1/3) ... [2025-04-29 11:15:48,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a6e35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:15:48, skipping insertion in model container [2025-04-29 11:15:48,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:15:48" (2/3) ... [2025-04-29 11:15:48,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a6e35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:15:48, skipping insertion in model container [2025-04-29 11:15:48,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:15:48" (3/3) ... [2025-04-29 11:15:48,564 INFO L128 eAbstractionObserver]: Analyzing ICFG 06-symbeq_08-tricky_address3.c [2025-04-29 11:15:48,573 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 11:15:48,575 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 06-symbeq_08-tricky_address3.c that has 2 procedures, 29 locations, 28 edges, 1 initial locations, 1 loop locations, and 9 error locations. [2025-04-29 11:15:48,575 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-29 11:15:48,608 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-29 11:15:48,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 62 flow [2025-04-29 11:15:48,659 INFO L116 PetriNetUnfolderBase]: 1/28 cut-off events. [2025-04-29 11:15:48,661 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:15:48,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 28 events. 1/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 50 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 3. Up to 2 conditions per place. [2025-04-29 11:15:48,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 62 flow [2025-04-29 11:15:48,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 28 transitions, 59 flow [2025-04-29 11:15:48,669 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 11:15:48,678 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;@b2ad292, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 11:15:48,678 INFO L341 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2025-04-29 11:15:48,684 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-29 11:15:48,684 INFO L116 PetriNetUnfolderBase]: 1/10 cut-off events. [2025-04-29 11:15:48,685 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:15:48,685 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:15:48,686 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:15:48,686 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-04-29 11:15:48,689 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:15:48,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1696846118, now seen corresponding path program 1 times [2025-04-29 11:15:48,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:15:48,695 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009216778] [2025-04-29 11:15:48,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:15:48,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:15:48,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-29 11:15:48,755 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-29 11:15:48,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:15:48,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:15:48,870 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 11:15:48,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:15:48,871 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009216778] [2025-04-29 11:15:48,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009216778] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:15:48,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:15:48,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:15:48,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551810963] [2025-04-29 11:15:48,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:15:48,880 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:15:48,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:15:48,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:15:48,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:15:48,899 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2025-04-29 11:15:48,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 11:15:48,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:15:48,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2025-04-29 11:15:48,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:15:48,991 INFO L116 PetriNetUnfolderBase]: 50/156 cut-off events. [2025-04-29 11:15:48,991 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:15:48,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 156 events. 50/156 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 606 event pairs, 49 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 263. Up to 117 conditions per place. [2025-04-29 11:15:48,994 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 17 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2025-04-29 11:15:48,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 99 flow [2025-04-29 11:15:48,996 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:15:48,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:15:49,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2025-04-29 11:15:49,004 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6091954022988506 [2025-04-29 11:15:49,007 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 59 flow. Second operand 3 states and 53 transitions. [2025-04-29 11:15:49,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 99 flow [2025-04-29 11:15:49,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-29 11:15:49,014 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 70 flow [2025-04-29 11:15:49,016 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2025-04-29 11:15:49,020 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2025-04-29 11:15:49,021 INFO L485 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 70 flow [2025-04-29 11:15:49,022 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 11:15:49,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:15:49,022 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:15:49,022 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-29 11:15:49,022 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-04-29 11:15:49,023 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:15:49,023 INFO L85 PathProgramCache]: Analyzing trace with hash -443671183, now seen corresponding path program 1 times [2025-04-29 11:15:49,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:15:49,024 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809700059] [2025-04-29 11:15:49,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:15:49,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:15:49,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-29 11:15:49,040 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-29 11:15:49,041 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:15:49,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:15:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:15:49,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:15:49,112 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809700059] [2025-04-29 11:15:49,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809700059] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-29 11:15:49,112 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74794207] [2025-04-29 11:15:49,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:15:49,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:15:49,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:15:49,116 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-29 11:15:49,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-29 11:15:49,164 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-29 11:15:49,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-29 11:15:49,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:15:49,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:15:49,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-04-29 11:15:49,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-29 11:15:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:15:49,217 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-29 11:15:49,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:15:49,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74794207] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-29 11:15:49,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-29 11:15:49,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-04-29 11:15:49,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667331928] [2025-04-29 11:15:49,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-29 11:15:49,238 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-29 11:15:49,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:15:49,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-29 11:15:49,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-04-29 11:15:49,239 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2025-04-29 11:15:49,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 70 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 11:15:49,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:15:49,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2025-04-29 11:15:49,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:15:49,347 INFO L116 PetriNetUnfolderBase]: 50/159 cut-off events. [2025-04-29 11:15:49,347 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:15:49,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 159 events. 50/159 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 603 event pairs, 49 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 282. Up to 117 conditions per place. [2025-04-29 11:15:49,349 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 17 selfloop transitions, 5 changer transitions 0/32 dead transitions. [2025-04-29 11:15:49,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 126 flow [2025-04-29 11:15:49,351 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-29 11:15:49,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-29 11:15:49,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2025-04-29 11:15:49,352 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5229885057471264 [2025-04-29 11:15:49,352 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 70 flow. Second operand 6 states and 91 transitions. [2025-04-29 11:15:49,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 126 flow [2025-04-29 11:15:49,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 32 transitions, 122 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-04-29 11:15:49,353 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 102 flow [2025-04-29 11:15:49,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=102, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2025-04-29 11:15:49,354 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2025-04-29 11:15:49,354 INFO L485 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 102 flow [2025-04-29 11:15:49,354 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 11:15:49,354 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:15:49,354 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:15:49,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-04-29 11:15:49,560 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:15:49,560 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-04-29 11:15:49,560 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:15:49,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1400507366, now seen corresponding path program 2 times [2025-04-29 11:15:49,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:15:49,561 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642057286] [2025-04-29 11:15:49,561 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-29 11:15:49,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:15:49,572 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 11 statements into 2 equivalence classes. [2025-04-29 11:15:49,579 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 11 statements. [2025-04-29 11:15:49,579 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-29 11:15:49,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:15:49,655 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-29 11:15:49,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:15:49,655 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642057286] [2025-04-29 11:15:49,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642057286] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:15:49,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:15:49,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:15:49,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159134078] [2025-04-29 11:15:49,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:15:49,656 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-29 11:15:49,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:15:49,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-29 11:15:49,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:15:49,689 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-04-29 11:15:49,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 11:15:49,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:15:49,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-04-29 11:15:49,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:15:49,781 INFO L116 PetriNetUnfolderBase]: 50/141 cut-off events. [2025-04-29 11:15:49,781 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-29 11:15:49,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 141 events. 50/141 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 458 event pairs, 30 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 255. Up to 105 conditions per place. [2025-04-29 11:15:49,784 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 27 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2025-04-29 11:15:49,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 166 flow [2025-04-29 11:15:49,784 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-29 11:15:49,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-29 11:15:49,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2025-04-29 11:15:49,785 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5086206896551724 [2025-04-29 11:15:49,785 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 102 flow. Second operand 4 states and 59 transitions. [2025-04-29 11:15:49,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 166 flow [2025-04-29 11:15:49,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 152 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-04-29 11:15:49,786 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 84 flow [2025-04-29 11:15:49,787 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2025-04-29 11:15:49,787 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2025-04-29 11:15:49,787 INFO L485 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 84 flow [2025-04-29 11:15:49,787 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 11:15:49,787 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:15:49,787 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:15:49,788 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-29 11:15:49,788 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-04-29 11:15:49,788 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:15:49,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1400507367, now seen corresponding path program 1 times [2025-04-29 11:15:49,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:15:49,788 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097356847] [2025-04-29 11:15:49,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:15:49,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:15:49,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-29 11:15:49,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-29 11:15:49,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:15:49,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:15:49,935 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:15:49,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:15:49,935 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097356847] [2025-04-29 11:15:49,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097356847] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-29 11:15:49,935 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700682560] [2025-04-29 11:15:49,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:15:49,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:15:49,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:15:49,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-29 11:15:49,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-29 11:15:49,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-29 11:15:49,986 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-29 11:15:49,986 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:15:49,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:15:49,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-29 11:15:49,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-29 11:15:50,013 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:15:50,013 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-29 11:15:50,092 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:15:50,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700682560] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-29 11:15:50,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-29 11:15:50,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2025-04-29 11:15:50,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878210127] [2025-04-29 11:15:50,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-29 11:15:50,093 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-29 11:15:50,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:15:50,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-29 11:15:50,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-04-29 11:15:50,095 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2025-04-29 11:15:50,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 84 flow. Second operand has 13 states, 13 states have (on average 12.384615384615385) internal successors, (161), 13 states have internal predecessors, (161), 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 11:15:50,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:15:50,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2025-04-29 11:15:50,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:15:50,205 INFO L116 PetriNetUnfolderBase]: 50/147 cut-off events. [2025-04-29 11:15:50,205 INFO L117 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2025-04-29 11:15:50,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 147 events. 50/147 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 470 event pairs, 49 based on Foata normal form. 6/152 useless extension candidates. Maximal degree in co-relation 263. Up to 117 conditions per place. [2025-04-29 11:15:50,207 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 17 selfloop transitions, 11 changer transitions 0/34 dead transitions. [2025-04-29 11:15:50,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 34 transitions, 176 flow [2025-04-29 11:15:50,207 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-29 11:15:50,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-04-29 11:15:50,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 166 transitions. [2025-04-29 11:15:50,209 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.47701149425287354 [2025-04-29 11:15:50,209 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 84 flow. Second operand 12 states and 166 transitions. [2025-04-29 11:15:50,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 34 transitions, 176 flow [2025-04-29 11:15:50,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 34 transitions, 173 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-29 11:15:50,211 INFO L231 Difference]: Finished difference. Result has 53 places, 34 transitions, 165 flow [2025-04-29 11:15:50,211 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=165, PETRI_PLACES=53, PETRI_TRANSITIONS=34} [2025-04-29 11:15:50,211 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2025-04-29 11:15:50,212 INFO L485 AbstractCegarLoop]: Abstraction has has 53 places, 34 transitions, 165 flow [2025-04-29 11:15:50,212 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.384615384615385) internal successors, (161), 13 states have internal predecessors, (161), 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 11:15:50,212 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:15:50,212 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:15:50,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-04-29 11:15:50,413 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-04-29 11:15:50,413 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-04-29 11:15:50,413 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:15:50,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1343031286, now seen corresponding path program 1 times [2025-04-29 11:15:50,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:15:50,414 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545129388] [2025-04-29 11:15:50,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:15:50,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:15:50,421 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-29 11:15:50,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-29 11:15:50,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:15:50,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:15:50,565 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-04-29 11:15:50,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:15:50,565 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545129388] [2025-04-29 11:15:50,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545129388] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:15:50,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:15:50,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:15:50,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630945540] [2025-04-29 11:15:50,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:15:50,566 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-29 11:15:50,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:15:50,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-29 11:15:50,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:15:50,581 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2025-04-29 11:15:50,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 34 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 11:15:50,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:15:50,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2025-04-29 11:15:50,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:15:50,659 INFO L116 PetriNetUnfolderBase]: 50/145 cut-off events. [2025-04-29 11:15:50,660 INFO L117 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2025-04-29 11:15:50,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 145 events. 50/145 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 432 event pairs, 42 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 267. Up to 99 conditions per place. [2025-04-29 11:15:50,662 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 29 selfloop transitions, 3 changer transitions 3/39 dead transitions. [2025-04-29 11:15:50,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 39 transitions, 246 flow [2025-04-29 11:15:50,662 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-29 11:15:50,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-29 11:15:50,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2025-04-29 11:15:50,663 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5431034482758621 [2025-04-29 11:15:50,664 INFO L175 Difference]: Start difference. First operand has 53 places, 34 transitions, 165 flow. Second operand 4 states and 63 transitions. [2025-04-29 11:15:50,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 39 transitions, 246 flow [2025-04-29 11:15:50,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 39 transitions, 198 flow, removed 19 selfloop flow, removed 5 redundant places. [2025-04-29 11:15:50,666 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 119 flow [2025-04-29 11:15:50,668 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2025-04-29 11:15:50,669 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2025-04-29 11:15:50,669 INFO L485 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 119 flow [2025-04-29 11:15:50,670 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 11:15:50,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:15:50,670 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:15:50,670 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-29 11:15:50,670 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-04-29 11:15:50,670 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:15:50,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1343164423, now seen corresponding path program 2 times [2025-04-29 11:15:50,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:15:50,671 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90961125] [2025-04-29 11:15:50,671 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-29 11:15:50,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:15:50,679 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-29 11:15:50,685 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 17 statements. [2025-04-29 11:15:50,687 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-29 11:15:50,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:15:50,765 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-04-29 11:15:50,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:15:50,767 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90961125] [2025-04-29 11:15:50,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90961125] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:15:50,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:15:50,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:15:50,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544588736] [2025-04-29 11:15:50,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:15:50,767 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-29 11:15:50,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:15:50,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-29 11:15:50,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:15:50,794 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2025-04-29 11:15:50,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 11:15:50,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:15:50,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2025-04-29 11:15:50,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:15:50,861 INFO L116 PetriNetUnfolderBase]: 50/135 cut-off events. [2025-04-29 11:15:50,862 INFO L117 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2025-04-29 11:15:50,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 135 events. 50/135 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 364 event pairs, 30 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 266. Up to 105 conditions per place. [2025-04-29 11:15:50,863 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 31 selfloop transitions, 2 changer transitions 2/37 dead transitions. [2025-04-29 11:15:50,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 37 transitions, 201 flow [2025-04-29 11:15:50,863 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-29 11:15:50,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-29 11:15:50,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2025-04-29 11:15:50,864 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5431034482758621 [2025-04-29 11:15:50,864 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 119 flow. Second operand 4 states and 63 transitions. [2025-04-29 11:15:50,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 37 transitions, 201 flow [2025-04-29 11:15:50,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 37 transitions, 193 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-04-29 11:15:50,866 INFO L231 Difference]: Finished difference. Result has 47 places, 29 transitions, 111 flow [2025-04-29 11:15:50,866 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=47, PETRI_TRANSITIONS=29} [2025-04-29 11:15:50,867 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2025-04-29 11:15:50,867 INFO L485 AbstractCegarLoop]: Abstraction has has 47 places, 29 transitions, 111 flow [2025-04-29 11:15:50,867 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 11:15:50,867 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:15:50,868 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:15:50,868 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-29 11:15:50,868 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-04-29 11:15:50,868 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:15:50,868 INFO L85 PathProgramCache]: Analyzing trace with hash -231431242, now seen corresponding path program 1 times [2025-04-29 11:15:50,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:15:50,868 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834587698] [2025-04-29 11:15:50,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:15:50,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:15:50,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-29 11:15:50,880 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-29 11:15:50,880 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:15:50,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:15:50,901 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-04-29 11:15:50,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:15:50,902 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834587698] [2025-04-29 11:15:50,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834587698] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:15:50,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:15:50,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-29 11:15:50,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217347501] [2025-04-29 11:15:50,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:15:50,902 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:15:50,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:15:50,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:15:50,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:15:50,909 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 29 [2025-04-29 11:15:50,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 29 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:15:50,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:15:50,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 29 [2025-04-29 11:15:50,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:15:50,939 INFO L116 PetriNetUnfolderBase]: 43/114 cut-off events. [2025-04-29 11:15:50,939 INFO L117 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2025-04-29 11:15:50,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 114 events. 43/114 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 276 event pairs, 42 based on Foata normal form. 8/121 useless extension candidates. Maximal degree in co-relation 227. Up to 111 conditions per place. [2025-04-29 11:15:50,940 INFO L140 encePairwiseOnDemand]: 27/29 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2025-04-29 11:15:50,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 28 transitions, 163 flow [2025-04-29 11:15:50,940 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:15:50,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:15:50,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2025-04-29 11:15:50,940 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2025-04-29 11:15:50,940 INFO L175 Difference]: Start difference. First operand has 47 places, 29 transitions, 111 flow. Second operand 3 states and 48 transitions. [2025-04-29 11:15:50,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 28 transitions, 163 flow [2025-04-29 11:15:50,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 28 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-29 11:15:50,942 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2025-04-29 11:15:50,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2025-04-29 11:15:50,942 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2025-04-29 11:15:50,942 INFO L485 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2025-04-29 11:15:50,942 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:15:50,944 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2025-04-29 11:15:50,945 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2025-04-29 11:15:50,945 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2025-04-29 11:15:50,945 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2025-04-29 11:15:50,945 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (9 of 14 remaining) [2025-04-29 11:15:50,945 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 14 remaining) [2025-04-29 11:15:50,945 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2025-04-29 11:15:50,945 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2025-04-29 11:15:50,945 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2025-04-29 11:15:50,945 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2025-04-29 11:15:50,945 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2025-04-29 11:15:50,945 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2025-04-29 11:15:50,946 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2025-04-29 11:15:50,946 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 14 remaining) [2025-04-29 11:15:50,946 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-29 11:15:50,946 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2025-04-29 11:15:50,950 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-29 11:15:50,950 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 11:15:50,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 11:15:50 BasicIcfg [2025-04-29 11:15:50,955 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 11:15:50,955 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 11:15:50,955 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 11:15:50,955 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 11:15:50,959 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:15:48" (3/4) ... [2025-04-29 11:15:50,960 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-04-29 11:15:50,962 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2025-04-29 11:15:50,964 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 48 nodes and edges [2025-04-29 11:15:50,964 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-04-29 11:15:50,964 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-04-29 11:15:50,964 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-04-29 11:15:51,026 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-29 11:15:51,026 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-29 11:15:51,026 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 11:15:51,027 INFO L158 Benchmark]: Toolchain (without parser) took 3224.52ms. Allocated memory is still 142.6MB. Free memory was 113.3MB in the beginning and 56.1MB in the end (delta: 57.2MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. [2025-04-29 11:15:51,028 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:15:51,028 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.84ms. Allocated memory is still 142.6MB. Free memory was 113.3MB in the beginning and 98.7MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 11:15:51,029 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.28ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 96.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:15:51,029 INFO L158 Benchmark]: Boogie Preprocessor took 57.46ms. Allocated memory is still 142.6MB. Free memory was 96.9MB in the beginning and 95.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:15:51,029 INFO L158 Benchmark]: RCFGBuilder took 403.59ms. Allocated memory is still 142.6MB. Free memory was 95.1MB in the beginning and 61.4MB in the end (delta: 33.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-04-29 11:15:51,030 INFO L158 Benchmark]: TraceAbstraction took 2395.29ms. Allocated memory is still 142.6MB. Free memory was 60.6MB in the beginning and 61.5MB in the end (delta: -811.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:15:51,030 INFO L158 Benchmark]: Witness Printer took 71.03ms. Allocated memory is still 142.6MB. Free memory was 61.5MB in the beginning and 56.1MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:15:51,031 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 252.84ms. Allocated memory is still 142.6MB. Free memory was 113.3MB in the beginning and 98.7MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.28ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 96.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 57.46ms. Allocated memory is still 142.6MB. Free memory was 96.9MB in the beginning and 95.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 403.59ms. Allocated memory is still 142.6MB. Free memory was 95.1MB in the beginning and 61.4MB in the end (delta: 33.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2395.29ms. Allocated memory is still 142.6MB. Free memory was 60.6MB in the beginning and 61.5MB in the end (delta: -811.4kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 71.03ms. Allocated memory is still 142.6MB. Free memory was 61.5MB in the beginning and 56.1MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 33]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 42 locations, 41 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: 2.3s, OverallIterations: 7, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 181 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 134 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 389 IncrementalHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 14 mSDtfsCounter, 389 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred in iteration=4, InterpolantAutomatonStates: 36, 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, 0.8s InterpolantComputationTime, 111 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 642 SizeOfPredicates, 0 NumberOfNonLiveVariables, 227 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 175/208 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 - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-29 11:15:51,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE