./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 3061b6dc 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.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:22:37,696 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:22:37,769 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:22:37,779 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:22:37,779 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:22:37,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:22:37,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:22:37,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:22:37,807 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:22:37,808 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:22:37,809 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:22:37,809 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:22:37,809 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:22:37,810 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:22:37,810 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:22:37,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:22:37,810 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:22:37,811 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:22:37,811 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:22:37,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:22:37,812 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:22:37,812 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:22:37,813 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:22:37,813 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:22:37,813 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:22:37,814 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:22:37,814 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:22:37,814 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:22:37,814 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:22:37,815 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:22:37,815 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:22:37,815 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:22:37,816 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:22:37,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:22:37,816 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:22:37,817 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:22:37,817 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:22:37,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:22:37,817 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:22:37,818 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:22:37,818 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:22:37,818 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:22:37,818 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 [2024-11-19 09:22:38,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:22:38,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:22:38,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:22:38,029 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:22:38,029 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:22:38,030 INFO L431 ainManager$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 [2024-11-19 09:22:39,253 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:22:39,455 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:22:39,456 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2024-11-19 09:22:39,467 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/401fe23fa/bbf85d7767ac456d9d15b12fb5431ce9/FLAG781c7a012 [2024-11-19 09:22:39,820 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/401fe23fa/bbf85d7767ac456d9d15b12fb5431ce9 [2024-11-19 09:22:39,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:22:39,823 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:22:39,825 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:22:39,825 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:22:39,829 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:22:39,830 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:22:39" (1/1) ... [2024-11-19 09:22:39,830 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@653a0571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:39, skipping insertion in model container [2024-11-19 09:22:39,831 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:22:39" (1/1) ... [2024-11-19 09:22:39,866 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:22:40,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:22:40,163 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:22:40,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:22:40,233 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:22:40,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:40 WrapperNode [2024-11-19 09:22:40,233 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:22:40,234 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:22:40,234 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:22:40,234 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:22:40,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:40" (1/1) ... [2024-11-19 09:22:40,249 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:40" (1/1) ... [2024-11-19 09:22:40,274 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 171 [2024-11-19 09:22:40,274 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:22:40,275 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:22:40,275 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:22:40,275 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:22:40,283 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:40" (1/1) ... [2024-11-19 09:22:40,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:40" (1/1) ... [2024-11-19 09:22:40,290 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:40" (1/1) ... [2024-11-19 09:22:40,307 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 5, 3, 6]. 38 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0, 0]. The 5 writes are split as follows [0, 1, 2, 2]. [2024-11-19 09:22:40,308 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:40" (1/1) ... [2024-11-19 09:22:40,308 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:40" (1/1) ... [2024-11-19 09:22:40,313 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:40" (1/1) ... [2024-11-19 09:22:40,317 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:40" (1/1) ... [2024-11-19 09:22:40,318 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:40" (1/1) ... [2024-11-19 09:22:40,322 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:40" (1/1) ... [2024-11-19 09:22:40,328 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:22:40,329 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:22:40,329 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:22:40,329 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:22:40,329 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:40" (1/1) ... [2024-11-19 09:22:40,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:22:40,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:22:40,355 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) [2024-11-19 09:22:40,358 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 [2024-11-19 09:22:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 09:22:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 09:22:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 09:22:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 09:22:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-19 09:22:40,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-19 09:22:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 09:22:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 09:22:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 09:22:40,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 09:22:40,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 09:22:40,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:22:40,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 09:22:40,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 09:22:40,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:22:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 09:22:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 09:22:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 09:22:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 09:22:40,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:22:40,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:22:40,404 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:22:40,539 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:22:40,541 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:22:40,822 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:22:40,822 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:22:41,146 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:22:41,147 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 09:22:41,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:22:41 BoogieIcfgContainer [2024-11-19 09:22:41,148 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:22:41,150 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:22:41,151 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:22:41,154 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:22:41,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:22:39" (1/3) ... [2024-11-19 09:22:41,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e11587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:22:41, skipping insertion in model container [2024-11-19 09:22:41,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:40" (2/3) ... [2024-11-19 09:22:41,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e11587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:22:41, skipping insertion in model container [2024-11-19 09:22:41,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:22:41" (3/3) ... [2024-11-19 09:22:41,156 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2024-11-19 09:22:41,170 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:22:41,171 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-19 09:22:41,171 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:22:41,297 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:22:41,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 57 transitions, 118 flow [2024-11-19 09:22:41,352 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-11-19 09:22:41,352 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:22:41,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 146 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2024-11-19 09:22:41,355 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 57 transitions, 118 flow [2024-11-19 09:22:41,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 57 transitions, 118 flow [2024-11-19 09:22:41,367 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:22:41,373 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;@64eb5e90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:22:41,374 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-19 09:22:41,377 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:22:41,377 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-19 09:22:41,377 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:22:41,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:41,378 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:22:41,379 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:22:41,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:41,383 INFO L85 PathProgramCache]: Analyzing trace with hash 520859, now seen corresponding path program 1 times [2024-11-19 09:22:41,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:22:41,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235493434] [2024-11-19 09:22:41,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:41,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:22:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:22:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:41,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:22:41,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235493434] [2024-11-19 09:22:41,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235493434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:22:41,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:22:41,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:22:41,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233809907] [2024-11-19 09:22:41,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:22:41,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:22:41,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:22:41,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:22:41,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:22:41,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-11-19 09:22:41,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 118 flow. Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:22:41,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:41,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-11-19 09:22:41,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:41,982 INFO L124 PetriNetUnfolderBase]: 55/191 cut-off events. [2024-11-19 09:22:41,984 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:22:41,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 191 events. 55/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 712 event pairs, 49 based on Foata normal form. 3/119 useless extension candidates. Maximal degree in co-relation 317. Up to 135 conditions per place. [2024-11-19 09:22:41,988 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 30 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2024-11-19 09:22:41,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 164 flow [2024-11-19 09:22:41,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:22:41,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:22:41,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 77 transitions. [2024-11-19 09:22:41,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6754385964912281 [2024-11-19 09:22:41,999 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 118 flow. Second operand 2 states and 77 transitions. [2024-11-19 09:22:42,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 164 flow [2024-11-19 09:22:42,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 50 transitions, 164 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:22:42,004 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 104 flow [2024-11-19 09:22:42,007 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=104, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2024-11-19 09:22:42,010 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, -5 predicate places. [2024-11-19 09:22:42,011 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 104 flow [2024-11-19 09:22:42,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:22:42,012 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:42,012 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 09:22:42,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:22:42,013 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:22:42,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:42,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1660715686, now seen corresponding path program 1 times [2024-11-19 09:22:42,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:22:42,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46624452] [2024-11-19 09:22:42,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:42,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:22:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:22:42,273 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:22:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:22:42,322 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:22:42,324 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:22:42,326 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (59 of 60 remaining) [2024-11-19 09:22:42,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 60 remaining) [2024-11-19 09:22:42,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 60 remaining) [2024-11-19 09:22:42,329 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 60 remaining) [2024-11-19 09:22:42,329 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 60 remaining) [2024-11-19 09:22:42,329 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 60 remaining) [2024-11-19 09:22:42,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 60 remaining) [2024-11-19 09:22:42,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 60 remaining) [2024-11-19 09:22:42,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 60 remaining) [2024-11-19 09:22:42,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (50 of 60 remaining) [2024-11-19 09:22:42,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 60 remaining) [2024-11-19 09:22:42,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 60 remaining) [2024-11-19 09:22:42,331 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 60 remaining) [2024-11-19 09:22:42,331 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 60 remaining) [2024-11-19 09:22:42,331 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 60 remaining) [2024-11-19 09:22:42,331 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 60 remaining) [2024-11-19 09:22:42,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONMEMORY_LEAK (43 of 60 remaining) [2024-11-19 09:22:42,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (42 of 60 remaining) [2024-11-19 09:22:42,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 60 remaining) [2024-11-19 09:22:42,333 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 60 remaining) [2024-11-19 09:22:42,333 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 60 remaining) [2024-11-19 09:22:42,333 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 60 remaining) [2024-11-19 09:22:42,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 60 remaining) [2024-11-19 09:22:42,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 60 remaining) [2024-11-19 09:22:42,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 60 remaining) [2024-11-19 09:22:42,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 60 remaining) [2024-11-19 09:22:42,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 60 remaining) [2024-11-19 09:22:42,335 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 60 remaining) [2024-11-19 09:22:42,335 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 60 remaining) [2024-11-19 09:22:42,335 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 60 remaining) [2024-11-19 09:22:42,335 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (29 of 60 remaining) [2024-11-19 09:22:42,335 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 60 remaining) [2024-11-19 09:22:42,336 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 60 remaining) [2024-11-19 09:22:42,336 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 60 remaining) [2024-11-19 09:22:42,336 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 60 remaining) [2024-11-19 09:22:42,336 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 60 remaining) [2024-11-19 09:22:42,337 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 60 remaining) [2024-11-19 09:22:42,337 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 60 remaining) [2024-11-19 09:22:42,338 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 60 remaining) [2024-11-19 09:22:42,338 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (20 of 60 remaining) [2024-11-19 09:22:42,338 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 60 remaining) [2024-11-19 09:22:42,338 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 60 remaining) [2024-11-19 09:22:42,338 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 60 remaining) [2024-11-19 09:22:42,339 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 60 remaining) [2024-11-19 09:22:42,339 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 60 remaining) [2024-11-19 09:22:42,339 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 60 remaining) [2024-11-19 09:22:42,339 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONMEMORY_LEAK (13 of 60 remaining) [2024-11-19 09:22:42,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (12 of 60 remaining) [2024-11-19 09:22:42,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 60 remaining) [2024-11-19 09:22:42,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 60 remaining) [2024-11-19 09:22:42,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 60 remaining) [2024-11-19 09:22:42,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 60 remaining) [2024-11-19 09:22:42,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 60 remaining) [2024-11-19 09:22:42,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 60 remaining) [2024-11-19 09:22:42,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 60 remaining) [2024-11-19 09:22:42,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 60 remaining) [2024-11-19 09:22:42,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 60 remaining) [2024-11-19 09:22:42,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 60 remaining) [2024-11-19 09:22:42,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 60 remaining) [2024-11-19 09:22:42,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 60 remaining) [2024-11-19 09:22:42,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:22:42,341 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-19 09:22:42,345 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:22:42,345 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-19 09:22:42,408 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:22:42,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 107 transitions, 224 flow [2024-11-19 09:22:42,436 INFO L124 PetriNetUnfolderBase]: 6/116 cut-off events. [2024-11-19 09:22:42,438 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:22:42,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 116 events. 6/116 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 459 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 103. Up to 3 conditions per place. [2024-11-19 09:22:42,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 107 transitions, 224 flow [2024-11-19 09:22:42,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 107 transitions, 224 flow [2024-11-19 09:22:42,442 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:22:42,445 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;@64eb5e90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:22:42,445 INFO L334 AbstractCegarLoop]: Starting to check reachability of 89 error locations. [2024-11-19 09:22:42,447 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:22:42,448 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-19 09:22:42,448 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:22:42,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:42,448 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:22:42,448 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-11-19 09:22:42,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:42,449 INFO L85 PathProgramCache]: Analyzing trace with hash 627110, now seen corresponding path program 1 times [2024-11-19 09:22:42,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:22:42,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912754339] [2024-11-19 09:22:42,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:42,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:22:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:22:42,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:42,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:22:42,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912754339] [2024-11-19 09:22:42,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912754339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:22:42,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:22:42,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:22:42,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036278233] [2024-11-19 09:22:42,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:22:42,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:22:42,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:22:42,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:22:42,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:22:42,754 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 107 [2024-11-19 09:22:42,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 107 transitions, 224 flow. Second operand has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 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) [2024-11-19 09:22:42,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:42,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 107 [2024-11-19 09:22:42,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:43,518 INFO L124 PetriNetUnfolderBase]: 3609/7017 cut-off events. [2024-11-19 09:22:43,519 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-19 09:22:43,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12815 conditions, 7017 events. 3609/7017 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 53265 event pairs, 3291 based on Foata normal form. 159/3914 useless extension candidates. Maximal degree in co-relation 11881. Up to 5715 conditions per place. [2024-11-19 09:22:43,569 INFO L140 encePairwiseOnDemand]: 98/107 looper letters, 57 selfloop transitions, 0 changer transitions 0/96 dead transitions. [2024-11-19 09:22:43,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 96 transitions, 316 flow [2024-11-19 09:22:43,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:22:43,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:22:43,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 146 transitions. [2024-11-19 09:22:43,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6822429906542056 [2024-11-19 09:22:43,573 INFO L175 Difference]: Start difference. First operand has 106 places, 107 transitions, 224 flow. Second operand 2 states and 146 transitions. [2024-11-19 09:22:43,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 96 transitions, 316 flow [2024-11-19 09:22:43,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:22:43,576 INFO L231 Difference]: Finished difference. Result has 98 places, 96 transitions, 202 flow [2024-11-19 09:22:43,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=202, PETRI_PLACES=98, PETRI_TRANSITIONS=96} [2024-11-19 09:22:43,577 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -8 predicate places. [2024-11-19 09:22:43,577 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 96 transitions, 202 flow [2024-11-19 09:22:43,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 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) [2024-11-19 09:22:43,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:43,577 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 09:22:43,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 09:22:43,578 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-11-19 09:22:43,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:43,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1506266465, now seen corresponding path program 1 times [2024-11-19 09:22:43,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:22:43,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10745910] [2024-11-19 09:22:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:43,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:22:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:22:43,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:43,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:22:43,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10745910] [2024-11-19 09:22:43,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10745910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:22:43,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:22:43,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:22:43,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284615680] [2024-11-19 09:22:43,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:22:43,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:22:43,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:22:43,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:22:43,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:22:43,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 107 [2024-11-19 09:22:43,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 96 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-11-19 09:22:43,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:43,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 107 [2024-11-19 09:22:43,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:45,122 INFO L124 PetriNetUnfolderBase]: 7152/13363 cut-off events. [2024-11-19 09:22:45,122 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-19 09:22:45,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24739 conditions, 13363 events. 7152/13363 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 102798 event pairs, 2576 based on Foata normal form. 0/7631 useless extension candidates. Maximal degree in co-relation 24734. Up to 6474 conditions per place. [2024-11-19 09:22:45,192 INFO L140 encePairwiseOnDemand]: 93/107 looper letters, 106 selfloop transitions, 8 changer transitions 0/146 dead transitions. [2024-11-19 09:22:45,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 146 transitions, 535 flow [2024-11-19 09:22:45,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:22:45,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:22:45,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2024-11-19 09:22:45,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6822429906542056 [2024-11-19 09:22:45,194 INFO L175 Difference]: Start difference. First operand has 98 places, 96 transitions, 202 flow. Second operand 3 states and 219 transitions. [2024-11-19 09:22:45,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 146 transitions, 535 flow [2024-11-19 09:22:45,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 146 transitions, 535 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:22:45,197 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 274 flow [2024-11-19 09:22:45,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=102, PETRI_TRANSITIONS=103} [2024-11-19 09:22:45,198 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -4 predicate places. [2024-11-19 09:22:45,198 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 274 flow [2024-11-19 09:22:45,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-11-19 09:22:45,199 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:45,199 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 09:22:45,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:22:45,199 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-11-19 09:22:45,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:45,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1506266466, now seen corresponding path program 1 times [2024-11-19 09:22:45,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:22:45,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020748985] [2024-11-19 09:22:45,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:45,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:22:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:22:45,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:45,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:22:45,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020748985] [2024-11-19 09:22:45,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020748985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:22:45,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:22:45,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:22:45,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557539420] [2024-11-19 09:22:45,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:22:45,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:22:45,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:22:45,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:22:45,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:22:45,572 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 107 [2024-11-19 09:22:45,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 103 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-19 09:22:45,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:45,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 107 [2024-11-19 09:22:45,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:22:46,360 INFO L124 PetriNetUnfolderBase]: 5509/10797 cut-off events. [2024-11-19 09:22:46,360 INFO L125 PetriNetUnfolderBase]: For 1474/1549 co-relation queries the response was YES. [2024-11-19 09:22:46,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21293 conditions, 10797 events. 5509/10797 cut-off events. For 1474/1549 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 83708 event pairs, 1883 based on Foata normal form. 786/7350 useless extension candidates. Maximal degree in co-relation 21286. Up to 7271 conditions per place. [2024-11-19 09:22:46,495 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 85 selfloop transitions, 3 changer transitions 0/126 dead transitions. [2024-11-19 09:22:46,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 126 transitions, 503 flow [2024-11-19 09:22:46,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:22:46,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:22:46,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2024-11-19 09:22:46,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.616822429906542 [2024-11-19 09:22:46,498 INFO L175 Difference]: Start difference. First operand has 102 places, 103 transitions, 274 flow. Second operand 3 states and 198 transitions. [2024-11-19 09:22:46,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 126 transitions, 503 flow [2024-11-19 09:22:46,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 126 transitions, 487 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:22:46,509 INFO L231 Difference]: Finished difference. Result has 96 places, 97 transitions, 252 flow [2024-11-19 09:22:46,509 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=96, PETRI_TRANSITIONS=97} [2024-11-19 09:22:46,511 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -10 predicate places. [2024-11-19 09:22:46,511 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 97 transitions, 252 flow [2024-11-19 09:22:46,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-19 09:22:46,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:46,511 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-19 09:22:46,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 09:22:46,512 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-11-19 09:22:46,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:46,512 INFO L85 PathProgramCache]: Analyzing trace with hash 904381904, now seen corresponding path program 1 times [2024-11-19 09:22:46,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:22:46,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228133727] [2024-11-19 09:22:46,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:46,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:22:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:22:46,825 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:22:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:22:46,840 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:22:46,840 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:22:46,841 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (88 of 89 remaining) [2024-11-19 09:22:46,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 89 remaining) [2024-11-19 09:22:46,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 89 remaining) [2024-11-19 09:22:46,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 89 remaining) [2024-11-19 09:22:46,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 89 remaining) [2024-11-19 09:22:46,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 89 remaining) [2024-11-19 09:22:46,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 89 remaining) [2024-11-19 09:22:46,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 89 remaining) [2024-11-19 09:22:46,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 89 remaining) [2024-11-19 09:22:46,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (79 of 89 remaining) [2024-11-19 09:22:46,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 89 remaining) [2024-11-19 09:22:46,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 89 remaining) [2024-11-19 09:22:46,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 89 remaining) [2024-11-19 09:22:46,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 89 remaining) [2024-11-19 09:22:46,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 89 remaining) [2024-11-19 09:22:46,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 89 remaining) [2024-11-19 09:22:46,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONMEMORY_LEAK (72 of 89 remaining) [2024-11-19 09:22:46,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (71 of 89 remaining) [2024-11-19 09:22:46,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 89 remaining) [2024-11-19 09:22:46,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 89 remaining) [2024-11-19 09:22:46,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 89 remaining) [2024-11-19 09:22:46,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 89 remaining) [2024-11-19 09:22:46,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 89 remaining) [2024-11-19 09:22:46,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 89 remaining) [2024-11-19 09:22:46,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 89 remaining) [2024-11-19 09:22:46,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 89 remaining) [2024-11-19 09:22:46,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 89 remaining) [2024-11-19 09:22:46,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 89 remaining) [2024-11-19 09:22:46,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 89 remaining) [2024-11-19 09:22:46,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 89 remaining) [2024-11-19 09:22:46,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (58 of 89 remaining) [2024-11-19 09:22:46,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 89 remaining) [2024-11-19 09:22:46,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 89 remaining) [2024-11-19 09:22:46,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 89 remaining) [2024-11-19 09:22:46,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 89 remaining) [2024-11-19 09:22:46,847 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 89 remaining) [2024-11-19 09:22:46,847 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 89 remaining) [2024-11-19 09:22:46,847 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 89 remaining) [2024-11-19 09:22:46,847 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 89 remaining) [2024-11-19 09:22:46,847 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (49 of 89 remaining) [2024-11-19 09:22:46,847 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 89 remaining) [2024-11-19 09:22:46,847 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 89 remaining) [2024-11-19 09:22:46,848 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 89 remaining) [2024-11-19 09:22:46,848 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 89 remaining) [2024-11-19 09:22:46,848 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 89 remaining) [2024-11-19 09:22:46,848 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 89 remaining) [2024-11-19 09:22:46,848 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONMEMORY_LEAK (42 of 89 remaining) [2024-11-19 09:22:46,848 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (41 of 89 remaining) [2024-11-19 09:22:46,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 89 remaining) [2024-11-19 09:22:46,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 89 remaining) [2024-11-19 09:22:46,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 89 remaining) [2024-11-19 09:22:46,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 89 remaining) [2024-11-19 09:22:46,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 89 remaining) [2024-11-19 09:22:46,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 89 remaining) [2024-11-19 09:22:46,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 89 remaining) [2024-11-19 09:22:46,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 89 remaining) [2024-11-19 09:22:46,850 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 89 remaining) [2024-11-19 09:22:46,850 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 89 remaining) [2024-11-19 09:22:46,850 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 89 remaining) [2024-11-19 09:22:46,850 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 89 remaining) [2024-11-19 09:22:46,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 89 remaining) [2024-11-19 09:22:46,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 89 remaining) [2024-11-19 09:22:46,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 89 remaining) [2024-11-19 09:22:46,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 89 remaining) [2024-11-19 09:22:46,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 89 remaining) [2024-11-19 09:22:46,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 89 remaining) [2024-11-19 09:22:46,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 89 remaining) [2024-11-19 09:22:46,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 89 remaining) [2024-11-19 09:22:46,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (20 of 89 remaining) [2024-11-19 09:22:46,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 89 remaining) [2024-11-19 09:22:46,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 89 remaining) [2024-11-19 09:22:46,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 89 remaining) [2024-11-19 09:22:46,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 89 remaining) [2024-11-19 09:22:46,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 89 remaining) [2024-11-19 09:22:46,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 89 remaining) [2024-11-19 09:22:46,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONMEMORY_LEAK (13 of 89 remaining) [2024-11-19 09:22:46,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (12 of 89 remaining) [2024-11-19 09:22:46,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 89 remaining) [2024-11-19 09:22:46,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 89 remaining) [2024-11-19 09:22:46,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 89 remaining) [2024-11-19 09:22:46,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 89 remaining) [2024-11-19 09:22:46,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 89 remaining) [2024-11-19 09:22:46,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 89 remaining) [2024-11-19 09:22:46,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 89 remaining) [2024-11-19 09:22:46,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 89 remaining) [2024-11-19 09:22:46,855 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 89 remaining) [2024-11-19 09:22:46,855 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 89 remaining) [2024-11-19 09:22:46,855 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 89 remaining) [2024-11-19 09:22:46,855 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 89 remaining) [2024-11-19 09:22:46,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:22:46,856 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-19 09:22:46,856 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:22:46,856 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-19 09:22:46,924 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:22:46,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 157 transitions, 332 flow [2024-11-19 09:22:46,952 INFO L124 PetriNetUnfolderBase]: 9/171 cut-off events. [2024-11-19 09:22:46,952 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-19 09:22:46,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 171 events. 9/171 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 804 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 152. Up to 4 conditions per place. [2024-11-19 09:22:46,953 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 157 transitions, 332 flow [2024-11-19 09:22:46,956 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 157 transitions, 332 flow [2024-11-19 09:22:46,957 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:22:46,957 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;@64eb5e90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:22:46,957 INFO L334 AbstractCegarLoop]: Starting to check reachability of 118 error locations. [2024-11-19 09:22:46,959 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:22:46,960 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-19 09:22:46,960 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:22:46,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:22:46,960 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:22:46,960 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2024-11-19 09:22:46,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:22:46,961 INFO L85 PathProgramCache]: Analyzing trace with hash 783011, now seen corresponding path program 1 times [2024-11-19 09:22:46,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:22:46,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414169569] [2024-11-19 09:22:46,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:22:46,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:22:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:22:47,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:22:47,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:22:47,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414169569] [2024-11-19 09:22:47,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414169569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:22:47,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:22:47,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:22:47,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385913930] [2024-11-19 09:22:47,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:22:47,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:22:47,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:22:47,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:22:47,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:22:47,251 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 157 [2024-11-19 09:22:47,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 157 transitions, 332 flow. Second operand has 2 states, 2 states have (on average 60.0) internal successors, (120), 2 states have internal predecessors, (120), 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) [2024-11-19 09:22:47,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:22:47,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 157 [2024-11-19 09:22:47,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:04,480 INFO L124 PetriNetUnfolderBase]: 150765/233063 cut-off events. [2024-11-19 09:23:04,481 INFO L125 PetriNetUnfolderBase]: For 4370/4370 co-relation queries the response was YES. [2024-11-19 09:23:04,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441408 conditions, 233063 events. 150765/233063 cut-off events. For 4370/4370 co-relation queries the response was YES. Maximal size of possible extension queue 6724. Compared 2147742 event pairs, 138281 based on Foata normal form. 6241/123817 useless extension candidates. Maximal degree in co-relation 88809. Up to 205557 conditions per place. [2024-11-19 09:23:06,056 INFO L140 encePairwiseOnDemand]: 144/157 looper letters, 84 selfloop transitions, 0 changer transitions 0/142 dead transitions. [2024-11-19 09:23:06,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 142 transitions, 470 flow [2024-11-19 09:23:06,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:23:06,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:23:06,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 215 transitions. [2024-11-19 09:23:06,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6847133757961783 [2024-11-19 09:23:06,059 INFO L175 Difference]: Start difference. First operand has 155 places, 157 transitions, 332 flow. Second operand 2 states and 215 transitions. [2024-11-19 09:23:06,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 142 transitions, 470 flow [2024-11-19 09:23:06,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 142 transitions, 468 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-19 09:23:06,065 INFO L231 Difference]: Finished difference. Result has 144 places, 142 transitions, 300 flow [2024-11-19 09:23:06,065 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=300, PETRI_PLACES=144, PETRI_TRANSITIONS=142} [2024-11-19 09:23:06,066 INFO L277 CegarLoopForPetriNet]: 155 programPoint places, -11 predicate places. [2024-11-19 09:23:06,066 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 142 transitions, 300 flow [2024-11-19 09:23:06,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 60.0) internal successors, (120), 2 states have internal predecessors, (120), 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) [2024-11-19 09:23:06,066 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:06,066 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 09:23:06,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 09:23:06,067 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2024-11-19 09:23:06,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:06,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1857361520, now seen corresponding path program 1 times [2024-11-19 09:23:06,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:06,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886234385] [2024-11-19 09:23:06,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:06,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:06,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:06,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:06,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886234385] [2024-11-19 09:23:06,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886234385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:06,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:06,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:23:06,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475459829] [2024-11-19 09:23:06,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:06,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:23:06,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:06,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:23:06,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:23:06,323 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 157 [2024-11-19 09:23:06,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 142 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:06,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:06,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 157 [2024-11-19 09:23:06,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand