./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i --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/pthread-ext/36_stack_cas_p0_vs_concur.i -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 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 17:48:50,821 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 17:48:50,891 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 17:48:50,897 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 17:48:50,899 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 17:48:50,932 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 17:48:50,933 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 17:48:50,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 17:48:50,934 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 17:48:50,936 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 17:48:50,936 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 17:48:50,937 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 17:48:50,937 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 17:48:50,939 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 17:48:50,939 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 17:48:50,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 17:48:50,940 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 17:48:50,940 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 17:48:50,940 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 17:48:50,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 17:48:50,941 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 17:48:50,942 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 17:48:50,942 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 17:48:50,942 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 17:48:50,942 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 17:48:50,943 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 17:48:50,943 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 17:48:50,943 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 17:48:50,944 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 17:48:50,944 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 17:48:50,944 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 17:48:50,945 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 17:48:50,945 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 17:48:50,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:48:50,946 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 17:48:50,946 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 17:48:50,946 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 17:48:50,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 17:48:50,947 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 17:48:50,947 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 17:48:50,947 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 17:48:50,948 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 17:48:50,948 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 [2024-11-10 17:48:51,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 17:48:51,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 17:48:51,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 17:48:51,265 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 17:48:51,266 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 17:48:51,267 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2024-11-10 17:48:52,696 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 17:48:52,985 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 17:48:52,987 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2024-11-10 17:48:53,005 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efab7348d/11458863f53e4c05927802cf652fc94b/FLAG28758acb1 [2024-11-10 17:48:53,025 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efab7348d/11458863f53e4c05927802cf652fc94b [2024-11-10 17:48:53,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 17:48:53,030 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 17:48:53,033 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 17:48:53,035 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 17:48:53,040 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 17:48:53,041 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:48:53" (1/1) ... [2024-11-10 17:48:53,042 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c2652c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:53, skipping insertion in model container [2024-11-10 17:48:53,042 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:48:53" (1/1) ... [2024-11-10 17:48:53,084 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 17:48:53,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:48:53,506 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 17:48:53,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:48:53,590 INFO L204 MainTranslator]: Completed translation [2024-11-10 17:48:53,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:53 WrapperNode [2024-11-10 17:48:53,591 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 17:48:53,592 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 17:48:53,592 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 17:48:53,592 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 17:48:53,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:53" (1/1) ... [2024-11-10 17:48:53,613 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:53" (1/1) ... [2024-11-10 17:48:53,650 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 168 [2024-11-10 17:48:53,651 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 17:48:53,652 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 17:48:53,652 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 17:48:53,652 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 17:48:53,663 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:53" (1/1) ... [2024-11-10 17:48:53,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:53" (1/1) ... [2024-11-10 17:48:53,667 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:53" (1/1) ... [2024-11-10 17:48:53,686 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 3, 6, 5]. 38 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 0, 1]. The 5 writes are split as follows [0, 2, 2, 1]. [2024-11-10 17:48:53,687 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:53" (1/1) ... [2024-11-10 17:48:53,687 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:53" (1/1) ... [2024-11-10 17:48:53,693 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:53" (1/1) ... [2024-11-10 17:48:53,694 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:53" (1/1) ... [2024-11-10 17:48:53,696 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:53" (1/1) ... [2024-11-10 17:48:53,698 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:53" (1/1) ... [2024-11-10 17:48:53,700 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 17:48:53,701 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 17:48:53,702 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 17:48:53,702 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 17:48:53,703 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:53" (1/1) ... [2024-11-10 17:48:53,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:48:53,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:48:53,746 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 17:48:53,748 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 17:48:53,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 17:48:53,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 17:48:53,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 17:48:53,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 17:48:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-10 17:48:53,793 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-10 17:48:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 17:48:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 17:48:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 17:48:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 17:48:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 17:48:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 17:48:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 17:48:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 17:48:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 17:48:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 17:48:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 17:48:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 17:48:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 17:48:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 17:48:53,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 17:48:53,798 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 17:48:53,913 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 17:48:53,915 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 17:48:54,256 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 17:48:54,257 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 17:48:54,826 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 17:48:54,827 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 17:48:54,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:48:54 BoogieIcfgContainer [2024-11-10 17:48:54,828 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 17:48:54,830 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 17:48:54,832 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 17:48:54,835 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 17:48:54,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:48:53" (1/3) ... [2024-11-10 17:48:54,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a05be6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:48:54, skipping insertion in model container [2024-11-10 17:48:54,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:53" (2/3) ... [2024-11-10 17:48:54,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a05be6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:48:54, skipping insertion in model container [2024-11-10 17:48:54,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:48:54" (3/3) ... [2024-11-10 17:48:54,839 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2024-11-10 17:48:54,857 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 17:48:54,857 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-10 17:48:54,857 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 17:48:54,954 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 17:48:54,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 66 transitions, 136 flow [2024-11-10 17:48:55,032 INFO L124 PetriNetUnfolderBase]: 7/73 cut-off events. [2024-11-10 17:48:55,032 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:48:55,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 73 events. 7/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 172 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 63. Up to 4 conditions per place. [2024-11-10 17:48:55,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 66 transitions, 136 flow [2024-11-10 17:48:55,042 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 66 transitions, 136 flow [2024-11-10 17:48:55,053 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:48:55,061 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;@2f6878aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:48:55,061 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-10 17:48:55,066 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 17:48:55,067 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 17:48:55,067 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:48:55,068 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:55,068 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 17:48:55,069 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-10 17:48:55,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:55,074 INFO L85 PathProgramCache]: Analyzing trace with hash 15447006, now seen corresponding path program 1 times [2024-11-10 17:48:55,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:48:55,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653280736] [2024-11-10 17:48:55,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:55,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:48:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:48:55,723 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 17:48:55,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:48:55,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653280736] [2024-11-10 17:48:55,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653280736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:48:55,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:48:55,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:48:55,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602349652] [2024-11-10 17:48:55,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:48:55,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 17:48:55,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:48:55,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 17:48:55,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 17:48:55,769 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 66 [2024-11-10 17:48:55,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 136 flow. Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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 17:48:55,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:48:55,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 66 [2024-11-10 17:48:55,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:48:55,895 INFO L124 PetriNetUnfolderBase]: 55/200 cut-off events. [2024-11-10 17:48:55,896 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:48:55,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 200 events. 55/200 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 806 event pairs, 49 based on Foata normal form. 37/161 useless extension candidates. Maximal degree in co-relation 325. Up to 135 conditions per place. [2024-11-10 17:48:55,902 INFO L140 encePairwiseOnDemand]: 58/66 looper letters, 30 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2024-11-10 17:48:55,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 170 flow [2024-11-10 17:48:55,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 17:48:55,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 17:48:55,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 88 transitions. [2024-11-10 17:48:55,914 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-10 17:48:55,916 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 136 flow. Second operand 2 states and 88 transitions. [2024-11-10 17:48:55,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 170 flow [2024-11-10 17:48:55,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 17:48:55,922 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 110 flow [2024-11-10 17:48:55,926 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=110, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2024-11-10 17:48:55,931 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, -8 predicate places. [2024-11-10 17:48:55,931 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 110 flow [2024-11-10 17:48:55,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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 17:48:55,932 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:55,932 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 17:48:55,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 17:48:55,933 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-10 17:48:55,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:55,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1312602149, now seen corresponding path program 1 times [2024-11-10 17:48:55,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:48:55,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816149190] [2024-11-10 17:48:55,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:55,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:48:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 17:48:56,218 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 17:48:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 17:48:56,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 17:48:56,274 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 17:48:56,275 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (59 of 60 remaining) [2024-11-10 17:48:56,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 60 remaining) [2024-11-10 17:48:56,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 60 remaining) [2024-11-10 17:48:56,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 60 remaining) [2024-11-10 17:48:56,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 60 remaining) [2024-11-10 17:48:56,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 60 remaining) [2024-11-10 17:48:56,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 60 remaining) [2024-11-10 17:48:56,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 60 remaining) [2024-11-10 17:48:56,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 60 remaining) [2024-11-10 17:48:56,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (50 of 60 remaining) [2024-11-10 17:48:56,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 60 remaining) [2024-11-10 17:48:56,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 60 remaining) [2024-11-10 17:48:56,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 60 remaining) [2024-11-10 17:48:56,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 60 remaining) [2024-11-10 17:48:56,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 60 remaining) [2024-11-10 17:48:56,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 60 remaining) [2024-11-10 17:48:56,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (43 of 60 remaining) [2024-11-10 17:48:56,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONARRAY_INDEX (42 of 60 remaining) [2024-11-10 17:48:56,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 60 remaining) [2024-11-10 17:48:56,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 60 remaining) [2024-11-10 17:48:56,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 60 remaining) [2024-11-10 17:48:56,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 60 remaining) [2024-11-10 17:48:56,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 60 remaining) [2024-11-10 17:48:56,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 60 remaining) [2024-11-10 17:48:56,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 60 remaining) [2024-11-10 17:48:56,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 60 remaining) [2024-11-10 17:48:56,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 60 remaining) [2024-11-10 17:48:56,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 60 remaining) [2024-11-10 17:48:56,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 60 remaining) [2024-11-10 17:48:56,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 60 remaining) [2024-11-10 17:48:56,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (29 of 60 remaining) [2024-11-10 17:48:56,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 60 remaining) [2024-11-10 17:48:56,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 60 remaining) [2024-11-10 17:48:56,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 60 remaining) [2024-11-10 17:48:56,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 60 remaining) [2024-11-10 17:48:56,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 60 remaining) [2024-11-10 17:48:56,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 60 remaining) [2024-11-10 17:48:56,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 60 remaining) [2024-11-10 17:48:56,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 60 remaining) [2024-11-10 17:48:56,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (20 of 60 remaining) [2024-11-10 17:48:56,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 60 remaining) [2024-11-10 17:48:56,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 60 remaining) [2024-11-10 17:48:56,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 60 remaining) [2024-11-10 17:48:56,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 60 remaining) [2024-11-10 17:48:56,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 60 remaining) [2024-11-10 17:48:56,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 60 remaining) [2024-11-10 17:48:56,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (13 of 60 remaining) [2024-11-10 17:48:56,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONARRAY_INDEX (12 of 60 remaining) [2024-11-10 17:48:56,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 60 remaining) [2024-11-10 17:48:56,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 60 remaining) [2024-11-10 17:48:56,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 60 remaining) [2024-11-10 17:48:56,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 60 remaining) [2024-11-10 17:48:56,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 60 remaining) [2024-11-10 17:48:56,290 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 60 remaining) [2024-11-10 17:48:56,290 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 60 remaining) [2024-11-10 17:48:56,290 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 60 remaining) [2024-11-10 17:48:56,290 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 60 remaining) [2024-11-10 17:48:56,290 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 60 remaining) [2024-11-10 17:48:56,290 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 60 remaining) [2024-11-10 17:48:56,290 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 60 remaining) [2024-11-10 17:48:56,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 17:48:56,291 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 17:48:56,295 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 17:48:56,295 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 17:48:56,379 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 17:48:56,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 122 transitions, 254 flow [2024-11-10 17:48:56,424 INFO L124 PetriNetUnfolderBase]: 13/137 cut-off events. [2024-11-10 17:48:56,424 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 17:48:56,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 137 events. 13/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 511 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 118. Up to 6 conditions per place. [2024-11-10 17:48:56,427 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 122 transitions, 254 flow [2024-11-10 17:48:56,430 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 122 transitions, 254 flow [2024-11-10 17:48:56,432 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:48:56,433 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;@2f6878aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:48:56,433 INFO L334 AbstractCegarLoop]: Starting to check reachability of 89 error locations. [2024-11-10 17:48:56,436 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 17:48:56,436 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 17:48:56,436 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:48:56,436 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:56,437 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 17:48:56,437 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-11-10 17:48:56,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:56,438 INFO L85 PathProgramCache]: Analyzing trace with hash 19202654, now seen corresponding path program 1 times [2024-11-10 17:48:56,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:48:56,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948633851] [2024-11-10 17:48:56,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:56,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:48:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:48:56,794 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 17:48:56,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:48:56,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948633851] [2024-11-10 17:48:56,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948633851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:48:56,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:48:56,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:48:56,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988653956] [2024-11-10 17:48:56,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:48:56,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 17:48:56,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:48:56,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 17:48:56,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 17:48:56,798 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 122 [2024-11-10 17:48:56,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 122 transitions, 254 flow. Second operand has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 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 17:48:56,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:48:56,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 122 [2024-11-10 17:48:56,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:48:57,832 INFO L124 PetriNetUnfolderBase]: 3609/7240 cut-off events. [2024-11-10 17:48:57,833 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-10 17:48:57,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13038 conditions, 7240 events. 3609/7240 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 57628 event pairs, 3291 based on Foata normal form. 1313/5267 useless extension candidates. Maximal degree in co-relation 12087. Up to 5715 conditions per place. [2024-11-10 17:48:57,905 INFO L140 encePairwiseOnDemand]: 108/122 looper letters, 57 selfloop transitions, 0 changer transitions 0/101 dead transitions. [2024-11-10 17:48:57,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 101 transitions, 326 flow [2024-11-10 17:48:57,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 17:48:57,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 17:48:57,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 163 transitions. [2024-11-10 17:48:57,909 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6680327868852459 [2024-11-10 17:48:57,910 INFO L175 Difference]: Start difference. First operand has 116 places, 122 transitions, 254 flow. Second operand 2 states and 163 transitions. [2024-11-10 17:48:57,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 101 transitions, 326 flow [2024-11-10 17:48:57,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 101 transitions, 326 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 17:48:57,914 INFO L231 Difference]: Finished difference. Result has 103 places, 101 transitions, 212 flow [2024-11-10 17:48:57,915 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=212, PETRI_PLACES=103, PETRI_TRANSITIONS=101} [2024-11-10 17:48:57,916 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -13 predicate places. [2024-11-10 17:48:57,916 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 101 transitions, 212 flow [2024-11-10 17:48:57,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 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 17:48:57,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:48:57,916 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:48:57,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 17:48:57,917 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-11-10 17:48:57,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:48:57,918 INFO L85 PathProgramCache]: Analyzing trace with hash -543634579, now seen corresponding path program 1 times [2024-11-10 17:48:57,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:48:57,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157506532] [2024-11-10 17:48:57,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:48:57,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:48:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:48:58,549 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 17:48:58,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:48:58,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157506532] [2024-11-10 17:48:58,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157506532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:48:58,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:48:58,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:48:58,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934041485] [2024-11-10 17:48:58,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:48:58,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:48:58,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:48:58,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:48:58,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:48:58,599 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 122 [2024-11-10 17:48:58,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 101 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 17:48:58,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:48:58,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 122 [2024-11-10 17:48:58,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:49:00,262 INFO L124 PetriNetUnfolderBase]: 7152/13683 cut-off events. [2024-11-10 17:49:00,263 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-10 17:49:00,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25059 conditions, 13683 events. 7152/13683 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 110794 event pairs, 2576 based on Foata normal form. 0/7915 useless extension candidates. Maximal degree in co-relation 25054. Up to 6474 conditions per place. [2024-11-10 17:49:00,368 INFO L140 encePairwiseOnDemand]: 108/122 looper letters, 106 selfloop transitions, 8 changer transitions 0/151 dead transitions. [2024-11-10 17:49:00,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 151 transitions, 545 flow [2024-11-10 17:49:00,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:49:00,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:49:00,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2024-11-10 17:49:00,372 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6475409836065574 [2024-11-10 17:49:00,372 INFO L175 Difference]: Start difference. First operand has 103 places, 101 transitions, 212 flow. Second operand 3 states and 237 transitions. [2024-11-10 17:49:00,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 151 transitions, 545 flow [2024-11-10 17:49:00,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 151 transitions, 545 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 17:49:00,379 INFO L231 Difference]: Finished difference. Result has 107 places, 108 transitions, 284 flow [2024-11-10 17:49:00,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=107, PETRI_TRANSITIONS=108} [2024-11-10 17:49:00,381 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -9 predicate places. [2024-11-10 17:49:00,382 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 108 transitions, 284 flow [2024-11-10 17:49:00,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 17:49:00,383 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:49:00,384 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:49:00,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 17:49:00,384 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-11-10 17:49:00,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:49:00,385 INFO L85 PathProgramCache]: Analyzing trace with hash -543634578, now seen corresponding path program 1 times [2024-11-10 17:49:00,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:49:00,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547166583] [2024-11-10 17:49:00,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:49:00,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:49:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:49:01,050 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 17:49:01,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:49:01,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547166583] [2024-11-10 17:49:01,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547166583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:49:01,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:49:01,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:49:01,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111135078] [2024-11-10 17:49:01,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:49:01,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:49:01,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:49:01,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:49:01,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:49:01,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 122 [2024-11-10 17:49:01,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 108 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 17:49:01,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:49:01,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 122 [2024-11-10 17:49:01,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:49:02,332 INFO L124 PetriNetUnfolderBase]: 5509/11112 cut-off events. [2024-11-10 17:49:02,332 INFO L125 PetriNetUnfolderBase]: For 1733/1802 co-relation queries the response was YES. [2024-11-10 17:49:02,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21608 conditions, 11112 events. 5509/11112 cut-off events. For 1733/1802 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 90803 event pairs, 1883 based on Foata normal form. 780/7629 useless extension candidates. Maximal degree in co-relation 21601. Up to 7271 conditions per place. [2024-11-10 17:49:02,414 INFO L140 encePairwiseOnDemand]: 114/122 looper letters, 85 selfloop transitions, 3 changer transitions 0/131 dead transitions. [2024-11-10 17:49:02,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 131 transitions, 513 flow [2024-11-10 17:49:02,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:49:02,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:49:02,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2024-11-10 17:49:02,417 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5901639344262295 [2024-11-10 17:49:02,417 INFO L175 Difference]: Start difference. First operand has 107 places, 108 transitions, 284 flow. Second operand 3 states and 216 transitions. [2024-11-10 17:49:02,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 131 transitions, 513 flow [2024-11-10 17:49:02,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 131 transitions, 497 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 17:49:02,427 INFO L231 Difference]: Finished difference. Result has 101 places, 102 transitions, 262 flow [2024-11-10 17:49:02,427 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=101, PETRI_TRANSITIONS=102} [2024-11-10 17:49:02,428 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -15 predicate places. [2024-11-10 17:49:02,428 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 102 transitions, 262 flow [2024-11-10 17:49:02,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 17:49:02,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:49:02,428 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:49:02,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 17:49:02,429 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err20ASSERT_VIOLATIONARRAY_INDEX === [thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-11-10 17:49:02,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:49:02,429 INFO L85 PathProgramCache]: Analyzing trace with hash 904716722, now seen corresponding path program 1 times [2024-11-10 17:49:02,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:49:02,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772780989] [2024-11-10 17:49:02,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:49:02,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:49:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:49:02,882 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 17:49:02,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:49:02,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772780989] [2024-11-10 17:49:02,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772780989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:49:02,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:49:02,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:49:02,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143916206] [2024-11-10 17:49:02,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:49:02,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 17:49:02,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:49:02,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 17:49:02,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 17:49:02,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 122 [2024-11-10 17:49:02,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 102 transitions, 262 flow. Second operand has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 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 17:49:02,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:49:02,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 122 [2024-11-10 17:49:02,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:49:04,597 INFO L124 PetriNetUnfolderBase]: 7215/13966 cut-off events. [2024-11-10 17:49:04,597 INFO L125 PetriNetUnfolderBase]: For 1700/1865 co-relation queries the response was YES. [2024-11-10 17:49:04,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26928 conditions, 13966 events. 7215/13966 cut-off events. For 1700/1865 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 113799 event pairs, 980 based on Foata normal form. 0/8129 useless extension candidates. Maximal degree in co-relation 26921. Up to 10145 conditions per place. [2024-11-10 17:49:04,701 INFO L140 encePairwiseOnDemand]: 113/122 looper letters, 126 selfloop transitions, 9 changer transitions 0/175 dead transitions. [2024-11-10 17:49:04,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 175 transitions, 711 flow [2024-11-10 17:49:04,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 17:49:04,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 17:49:04,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 397 transitions. [2024-11-10 17:49:04,704 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5423497267759563 [2024-11-10 17:49:04,704 INFO L175 Difference]: Start difference. First operand has 101 places, 102 transitions, 262 flow. Second operand 6 states and 397 transitions. [2024-11-10 17:49:04,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 175 transitions, 711 flow [2024-11-10 17:49:04,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 175 transitions, 701 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 17:49:04,711 INFO L231 Difference]: Finished difference. Result has 108 places, 111 transitions, 331 flow [2024-11-10 17:49:04,711 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=331, PETRI_PLACES=108, PETRI_TRANSITIONS=111} [2024-11-10 17:49:04,712 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -8 predicate places. [2024-11-10 17:49:04,712 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 111 transitions, 331 flow [2024-11-10 17:49:04,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 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 17:49:04,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:49:04,713 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-10 17:49:04,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 17:49:04,713 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-11-10 17:49:04,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:49:04,714 INFO L85 PathProgramCache]: Analyzing trace with hash 322565950, now seen corresponding path program 1 times [2024-11-10 17:49:04,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:49:04,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853893299] [2024-11-10 17:49:04,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:49:04,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:49:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 17:49:05,065 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 17:49:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 17:49:05,091 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 17:49:05,092 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 17:49:05,092 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (88 of 89 remaining) [2024-11-10 17:49:05,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 89 remaining) [2024-11-10 17:49:05,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 89 remaining) [2024-11-10 17:49:05,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 89 remaining) [2024-11-10 17:49:05,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 89 remaining) [2024-11-10 17:49:05,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 89 remaining) [2024-11-10 17:49:05,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 89 remaining) [2024-11-10 17:49:05,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 89 remaining) [2024-11-10 17:49:05,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 89 remaining) [2024-11-10 17:49:05,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (79 of 89 remaining) [2024-11-10 17:49:05,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 89 remaining) [2024-11-10 17:49:05,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 89 remaining) [2024-11-10 17:49:05,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 89 remaining) [2024-11-10 17:49:05,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 89 remaining) [2024-11-10 17:49:05,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 89 remaining) [2024-11-10 17:49:05,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 89 remaining) [2024-11-10 17:49:05,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (72 of 89 remaining) [2024-11-10 17:49:05,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONARRAY_INDEX (71 of 89 remaining) [2024-11-10 17:49:05,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 89 remaining) [2024-11-10 17:49:05,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 89 remaining) [2024-11-10 17:49:05,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 89 remaining) [2024-11-10 17:49:05,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 89 remaining) [2024-11-10 17:49:05,098 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 89 remaining) [2024-11-10 17:49:05,098 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 89 remaining) [2024-11-10 17:49:05,098 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 89 remaining) [2024-11-10 17:49:05,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 89 remaining) [2024-11-10 17:49:05,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 89 remaining) [2024-11-10 17:49:05,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 89 remaining) [2024-11-10 17:49:05,102 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 89 remaining) [2024-11-10 17:49:05,102 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 89 remaining) [2024-11-10 17:49:05,102 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (58 of 89 remaining) [2024-11-10 17:49:05,102 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 89 remaining) [2024-11-10 17:49:05,102 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 89 remaining) [2024-11-10 17:49:05,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 89 remaining) [2024-11-10 17:49:05,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 89 remaining) [2024-11-10 17:49:05,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 89 remaining) [2024-11-10 17:49:05,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 89 remaining) [2024-11-10 17:49:05,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 89 remaining) [2024-11-10 17:49:05,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 89 remaining) [2024-11-10 17:49:05,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (49 of 89 remaining) [2024-11-10 17:49:05,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 89 remaining) [2024-11-10 17:49:05,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 89 remaining) [2024-11-10 17:49:05,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 89 remaining) [2024-11-10 17:49:05,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 89 remaining) [2024-11-10 17:49:05,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 89 remaining) [2024-11-10 17:49:05,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 89 remaining) [2024-11-10 17:49:05,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (42 of 89 remaining) [2024-11-10 17:49:05,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONARRAY_INDEX (41 of 89 remaining) [2024-11-10 17:49:05,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 89 remaining) [2024-11-10 17:49:05,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 89 remaining) [2024-11-10 17:49:05,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 89 remaining) [2024-11-10 17:49:05,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 89 remaining) [2024-11-10 17:49:05,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 89 remaining) [2024-11-10 17:49:05,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 89 remaining) [2024-11-10 17:49:05,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 89 remaining) [2024-11-10 17:49:05,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 89 remaining) [2024-11-10 17:49:05,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 89 remaining) [2024-11-10 17:49:05,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 89 remaining) [2024-11-10 17:49:05,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 89 remaining) [2024-11-10 17:49:05,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 89 remaining) [2024-11-10 17:49:05,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 89 remaining) [2024-11-10 17:49:05,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 89 remaining) [2024-11-10 17:49:05,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 89 remaining) [2024-11-10 17:49:05,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 89 remaining) [2024-11-10 17:49:05,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 89 remaining) [2024-11-10 17:49:05,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 89 remaining) [2024-11-10 17:49:05,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 89 remaining) [2024-11-10 17:49:05,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 89 remaining) [2024-11-10 17:49:05,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (20 of 89 remaining) [2024-11-10 17:49:05,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 89 remaining) [2024-11-10 17:49:05,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 89 remaining) [2024-11-10 17:49:05,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 89 remaining) [2024-11-10 17:49:05,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 89 remaining) [2024-11-10 17:49:05,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 89 remaining) [2024-11-10 17:49:05,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 89 remaining) [2024-11-10 17:49:05,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (13 of 89 remaining) [2024-11-10 17:49:05,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONARRAY_INDEX (12 of 89 remaining) [2024-11-10 17:49:05,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 89 remaining) [2024-11-10 17:49:05,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 89 remaining) [2024-11-10 17:49:05,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 89 remaining) [2024-11-10 17:49:05,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 89 remaining) [2024-11-10 17:49:05,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 89 remaining) [2024-11-10 17:49:05,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 89 remaining) [2024-11-10 17:49:05,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 89 remaining) [2024-11-10 17:49:05,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 89 remaining) [2024-11-10 17:49:05,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 89 remaining) [2024-11-10 17:49:05,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 89 remaining) [2024-11-10 17:49:05,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 89 remaining) [2024-11-10 17:49:05,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 89 remaining) [2024-11-10 17:49:05,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 17:49:05,120 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-10 17:49:05,121 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 17:49:05,121 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 17:49:05,209 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 17:49:05,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 178 transitions, 374 flow [2024-11-10 17:49:05,250 INFO L124 PetriNetUnfolderBase]: 19/201 cut-off events. [2024-11-10 17:49:05,251 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-10 17:49:05,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 201 events. 19/201 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 873 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 173. Up to 8 conditions per place. [2024-11-10 17:49:05,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 178 transitions, 374 flow [2024-11-10 17:49:05,257 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 178 transitions, 374 flow [2024-11-10 17:49:05,259 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:49:05,259 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;@2f6878aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:49:05,260 INFO L334 AbstractCegarLoop]: Starting to check reachability of 118 error locations. [2024-11-10 17:49:05,264 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 17:49:05,264 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 17:49:05,264 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:49:05,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:49:05,265 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 17:49:05,265 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2024-11-10 17:49:05,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:49:05,265 INFO L85 PathProgramCache]: Analyzing trace with hash 24682206, now seen corresponding path program 1 times [2024-11-10 17:49:05,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:49:05,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15341197] [2024-11-10 17:49:05,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:49:05,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:49:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:49:05,652 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 17:49:05,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:49:05,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15341197] [2024-11-10 17:49:05,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15341197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:49:05,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:49:05,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:49:05,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6624037] [2024-11-10 17:49:05,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:49:05,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 17:49:05,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:49:05,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 17:49:05,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 17:49:05,656 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 178 [2024-11-10 17:49:05,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 178 transitions, 374 flow. Second operand has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 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 17:49:05,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:49:05,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 178 [2024-11-10 17:49:05,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:49:26,120 INFO L124 PetriNetUnfolderBase]: 150765/239808 cut-off events. [2024-11-10 17:49:26,121 INFO L125 PetriNetUnfolderBase]: For 4370/4370 co-relation queries the response was YES. [2024-11-10 17:49:26,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448153 conditions, 239808 events. 150765/239808 cut-off events. For 4370/4370 co-relation queries the response was YES. Maximal size of possible extension queue 6621. Compared 2349801 event pairs, 138281 based on Foata normal form. 42691/166297 useless extension candidates. Maximal degree in co-relation 90965. Up to 205557 conditions per place. [2024-11-10 17:49:27,861 INFO L140 encePairwiseOnDemand]: 158/178 looper letters, 84 selfloop transitions, 0 changer transitions 0/149 dead transitions. [2024-11-10 17:49:27,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 149 transitions, 484 flow [2024-11-10 17:49:27,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 17:49:27,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 17:49:27,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 238 transitions. [2024-11-10 17:49:27,863 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6685393258426966 [2024-11-10 17:49:27,863 INFO L175 Difference]: Start difference. First operand has 169 places, 178 transitions, 374 flow. Second operand 2 states and 238 transitions. [2024-11-10 17:49:27,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 149 transitions, 484 flow [2024-11-10 17:49:27,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 149 transitions, 482 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-10 17:49:27,870 INFO L231 Difference]: Finished difference. Result has 151 places, 149 transitions, 314 flow [2024-11-10 17:49:27,870 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=314, PETRI_PLACES=151, PETRI_TRANSITIONS=149} [2024-11-10 17:49:27,871 INFO L277 CegarLoopForPetriNet]: 169 programPoint places, -18 predicate places. [2024-11-10 17:49:27,871 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 149 transitions, 314 flow [2024-11-10 17:49:27,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 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 17:49:27,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:49:27,872 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:49:27,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 17:49:27,872 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2024-11-10 17:49:27,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:49:27,872 INFO L85 PathProgramCache]: Analyzing trace with hash 522506532, now seen corresponding path program 1 times [2024-11-10 17:49:27,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:49:27,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263118362] [2024-11-10 17:49:27,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:49:27,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:49:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:49:28,171 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 17:49:28,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:49:28,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263118362] [2024-11-10 17:49:28,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263118362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:49:28,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:49:28,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:49:28,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302818463] [2024-11-10 17:49:28,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:49:28,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:49:28,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:49:28,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:49:28,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:49:28,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2024-11-10 17:49:28,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 149 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 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 17:49:28,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:49:28,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2024-11-10 17:49:28,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand