./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.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 c01f4f7d2658db6d4a951cb25555f85a195a1e66c897cc0a3f349ba621d29da1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:18:52,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:18:52,876 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:18:52,881 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:18:52,884 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:18:52,914 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:18:52,915 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:18:52,915 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:18:52,916 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:18:52,920 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:18:52,920 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:18:52,920 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:18:52,921 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:18:52,921 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:18:52,922 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:18:52,922 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:18:52,922 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:18:52,922 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:18:52,922 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:18:52,923 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:18:52,923 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:18:52,928 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:18:52,929 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:18:52,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:18:52,929 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:18:52,929 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:18:52,930 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:18:52,930 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:18:52,930 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:18:52,930 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:18:52,931 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:18:52,931 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:18:52,931 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:18:52,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:18:52,931 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:18:52,932 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:18:52,932 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:18:52,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:18:52,933 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:18:52,933 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:18:52,934 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:18:52,935 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:18:52,935 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c01f4f7d2658db6d4a951cb25555f85a195a1e66c897cc0a3f349ba621d29da1 [2024-11-10 18:18:53,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:18:53,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:18:53,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:18:53,271 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:18:53,271 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:18:53,273 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2024-11-10 18:18:54,973 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:18:55,174 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:18:55,175 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2024-11-10 18:18:55,185 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5128b9a9/88ef3bffbfd1482ab9ee37ce278367fd/FLAGb2fa1a24f [2024-11-10 18:18:55,203 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5128b9a9/88ef3bffbfd1482ab9ee37ce278367fd [2024-11-10 18:18:55,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:18:55,208 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:18:55,209 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:18:55,210 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:18:55,215 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:18:55,216 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:18:55" (1/1) ... [2024-11-10 18:18:55,217 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15c6fbdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:18:55, skipping insertion in model container [2024-11-10 18:18:55,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:18:55" (1/1) ... [2024-11-10 18:18:55,240 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:18:55,447 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 18:18:55,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:18:55,459 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:18:55,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:18:55,508 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:18:55,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:18:55 WrapperNode [2024-11-10 18:18:55,509 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:18:55,510 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:18:55,510 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:18:55,510 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:18:55,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:18:55" (1/1) ... [2024-11-10 18:18:55,527 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:18:55" (1/1) ... [2024-11-10 18:18:55,550 INFO L138 Inliner]: procedures = 24, calls = 31, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 150 [2024-11-10 18:18:55,550 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:18:55,551 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:18:55,551 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:18:55,552 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:18:55,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:18:55" (1/1) ... [2024-11-10 18:18:55,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:18:55" (1/1) ... [2024-11-10 18:18:55,566 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:18:55" (1/1) ... [2024-11-10 18:18:55,601 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-10 18:18:55,605 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:18:55" (1/1) ... [2024-11-10 18:18:55,605 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:18:55" (1/1) ... [2024-11-10 18:18:55,619 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:18:55" (1/1) ... [2024-11-10 18:18:55,624 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:18:55" (1/1) ... [2024-11-10 18:18:55,626 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:18:55" (1/1) ... [2024-11-10 18:18:55,628 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:18:55" (1/1) ... [2024-11-10 18:18:55,631 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:18:55,632 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:18:55,632 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:18:55,632 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:18:55,633 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:18:55" (1/1) ... [2024-11-10 18:18:55,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:18:55,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:18:55,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 18:18:55,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 18:18:55,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:18:55,718 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 18:18:55,718 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 18:18:55,718 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 18:18:55,719 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 18:18:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 18:18:55,719 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 18:18:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-10 18:18:55,719 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-10 18:18:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:18:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 18:18:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-11-10 18:18:55,719 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-11-10 18:18:55,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 18:18:55,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 18:18:55,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 18:18:55,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:18:55,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:18:55,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 18:18:55,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 18:18:55,722 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:18:55,832 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:18:55,834 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:18:56,269 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:18:56,269 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:18:56,517 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:18:56,518 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:18:56,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:18:56 BoogieIcfgContainer [2024-11-10 18:18:56,519 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:18:56,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:18:56,522 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:18:56,525 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:18:56,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:18:55" (1/3) ... [2024-11-10 18:18:56,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2688bdb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:18:56, skipping insertion in model container [2024-11-10 18:18:56,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:18:55" (2/3) ... [2024-11-10 18:18:56,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2688bdb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:18:56, skipping insertion in model container [2024-11-10 18:18:56,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:18:56" (3/3) ... [2024-11-10 18:18:56,528 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2024-11-10 18:18:56,546 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:18:56,546 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-11-10 18:18:56,546 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:18:56,637 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-11-10 18:18:56,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 113 transitions, 261 flow [2024-11-10 18:18:56,744 INFO L124 PetriNetUnfolderBase]: 12/108 cut-off events. [2024-11-10 18:18:56,745 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-10 18:18:56,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 108 events. 12/108 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 364 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2024-11-10 18:18:56,752 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 113 transitions, 261 flow [2024-11-10 18:18:56,756 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 107 transitions, 244 flow [2024-11-10 18:18:56,769 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:18:56,775 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2af86ebf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:18:56,776 INFO L334 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2024-11-10 18:18:56,783 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:18:56,784 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2024-11-10 18:18:56,784 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:18:56,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:18:56,785 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 18:18:56,786 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2024-11-10 18:18:56,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:18:56,792 INFO L85 PathProgramCache]: Analyzing trace with hash 509157396, now seen corresponding path program 1 times [2024-11-10 18:18:56,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:18:56,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394397414] [2024-11-10 18:18:56,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:18:56,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:18:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:18:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:18:57,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:18:57,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394397414] [2024-11-10 18:18:57,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394397414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:18:57,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:18:57,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:18:57,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454951345] [2024-11-10 18:18:57,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:18:57,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:18:57,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:18:57,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:18:57,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:18:57,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 113 [2024-11-10 18:18:57,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 107 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:18:57,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:18:57,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 113 [2024-11-10 18:18:57,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand