./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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/goblint-regression/28-race_reach_87-lists_racefree-deref.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 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:39:59,400 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:39:59,468 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:39:59,473 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:39:59,473 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:39:59,496 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:39:59,496 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:39:59,497 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:39:59,497 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:39:59,500 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:39:59,500 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:39:59,500 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:39:59,501 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:39:59,501 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:39:59,501 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:39:59,501 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:39:59,502 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:39:59,502 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:39:59,502 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:39:59,502 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:39:59,503 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:39:59,507 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:39:59,507 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:39:59,507 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:39:59,507 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:39:59,507 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:39:59,507 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:39:59,507 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:39:59,508 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:39:59,508 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:39:59,508 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:39:59,508 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:39:59,508 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:39:59,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:39:59,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:39:59,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:39:59,509 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:39:59,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:39:59,509 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:39:59,509 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:39:59,510 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:39:59,512 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:39:59,512 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa [2024-11-22 21:39:59,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:39:59,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:39:59,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:39:59,714 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:39:59,714 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:39:59,715 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree-deref.i [2024-11-22 21:40:01,117 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:40:01,390 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:40:01,391 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree-deref.i [2024-11-22 21:40:01,407 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db71bbc0c/11a8c6aca5864a148d38e06e8cdcef70/FLAG2289efe5e [2024-11-22 21:40:01,423 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db71bbc0c/11a8c6aca5864a148d38e06e8cdcef70 [2024-11-22 21:40:01,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:40:01,427 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:40:01,429 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:40:01,429 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:40:01,434 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:40:01,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:40:01" (1/1) ... [2024-11-22 21:40:01,437 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@690c564c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:40:01, skipping insertion in model container [2024-11-22 21:40:01,437 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:40:01" (1/1) ... [2024-11-22 21:40:01,485 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:40:01,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:40:02,052 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:40:02,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:40:02,194 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:40:02,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:40:02 WrapperNode [2024-11-22 21:40:02,195 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:40:02,196 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:40:02,196 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:40:02,196 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:40:02,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:40:02" (1/1) ... [2024-11-22 21:40:02,248 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:40:02" (1/1) ... [2024-11-22 21:40:02,349 INFO L138 Inliner]: procedures = 280, calls = 1603, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 1780 [2024-11-22 21:40:02,349 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:40:02,350 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:40:02,350 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:40:02,350 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:40:02,361 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:40:02" (1/1) ... [2024-11-22 21:40:02,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:40:02" (1/1) ... [2024-11-22 21:40:02,376 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:40:02" (1/1) ... [2024-11-22 21:40:02,431 INFO L175 MemorySlicer]: Split 1569 memory accesses to 8 slices as follows [2, 14, 5, 2, 259, 5, 1280, 2]. 82 percent of accesses are in the largest equivalence class. The 1548 initializations are split as follows [2, 0, 5, 0, 256, 5, 1280, 0]. The 11 writes are split as follows [0, 8, 0, 1, 1, 0, 0, 1]. [2024-11-22 21:40:02,432 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:40:02" (1/1) ... [2024-11-22 21:40:02,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:40:02" (1/1) ... [2024-11-22 21:40:02,530 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:40:02" (1/1) ... [2024-11-22 21:40:02,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:40:02" (1/1) ... [2024-11-22 21:40:02,544 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:40:02" (1/1) ... [2024-11-22 21:40:02,557 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:40:02" (1/1) ... [2024-11-22 21:40:02,575 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:40:02,575 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:40:02,576 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:40:02,576 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:40:02,577 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:40:02" (1/1) ... [2024-11-22 21:40:02,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:40:02,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:40:02,605 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) [2024-11-22 21:40:02,608 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 [2024-11-22 21:40:02,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 21:40:02,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-22 21:40:02,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-22 21:40:02,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-22 21:40:02,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-22 21:40:02,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-22 21:40:02,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-22 21:40:02,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-22 21:40:02,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-22 21:40:02,648 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-11-22 21:40:02,648 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-11-22 21:40:02,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 21:40:02,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-22 21:40:02,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-22 21:40:02,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-22 21:40:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-22 21:40:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-22 21:40:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-22 21:40:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-22 21:40:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-22 21:40:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-22 21:40:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 21:40:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 21:40:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 21:40:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-22 21:40:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-22 21:40:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-22 21:40:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-22 21:40:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-22 21:40:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-22 21:40:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-22 21:40:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 21:40:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 21:40:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 21:40:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-22 21:40:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-22 21:40:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-22 21:40:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-22 21:40:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-22 21:40:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-22 21:40:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 21:40:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:40:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-22 21:40:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-22 21:40:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-22 21:40:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-22 21:40:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-22 21:40:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-22 21:40:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-22 21:40:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-22 21:40:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:40:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 21:40:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 21:40:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 21:40:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-22 21:40:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-22 21:40:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-22 21:40:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-22 21:40:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:40:02,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:40:02,656 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:40:02,839 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:40:02,842 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:40:04,420 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:40:04,420 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:40:43,897 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:40:43,897 INFO L316 CfgBuilder]: Removed 16 assume(true) statements. [2024-11-22 21:40:43,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:40:43 BoogieIcfgContainer [2024-11-22 21:40:43,898 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:40:43,899 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:40:43,899 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:40:43,902 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:40:43,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:40:01" (1/3) ... [2024-11-22 21:40:43,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1ae45b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:40:43, skipping insertion in model container [2024-11-22 21:40:43,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:40:02" (2/3) ... [2024-11-22 21:40:43,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1ae45b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:40:43, skipping insertion in model container [2024-11-22 21:40:43,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:40:43" (3/3) ... [2024-11-22 21:40:43,904 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree-deref.i [2024-11-22 21:40:43,916 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:40:43,916 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2024-11-22 21:40:43,916 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:40:44,035 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-22 21:40:44,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 144 transitions, 308 flow [2024-11-22 21:40:44,190 INFO L124 PetriNetUnfolderBase]: 39/286 cut-off events. [2024-11-22 21:40:44,190 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-22 21:40:44,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 286 events. 39/286 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1514 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 149. Up to 8 conditions per place. [2024-11-22 21:40:44,195 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 144 transitions, 308 flow [2024-11-22 21:40:44,200 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 144 transitions, 308 flow [2024-11-22 21:40:44,211 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:40:44,216 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;@4f5ba366, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:40:44,217 INFO L334 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2024-11-22 21:40:44,278 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:40:44,278 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-22 21:40:44,278 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:40:44,279 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:40:44,280 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-22 21:40:44,280 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-22 21:40:44,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:40:44,285 INFO L85 PathProgramCache]: Analyzing trace with hash 3699657, now seen corresponding path program 1 times [2024-11-22 21:40:44,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:40:44,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057745665] [2024-11-22 21:40:44,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:40:44,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:40:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:40:46,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:40:46,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:40:46,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057745665] [2024-11-22 21:40:46,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057745665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:40:46,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:40:46,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:40:46,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781774707] [2024-11-22 21:40:46,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:40:47,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:40:47,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:40:47,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:40:47,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:40:47,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 144 [2024-11-22 21:40:47,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 144 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2024-11-22 21:40:47,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:40:47,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 144 [2024-11-22 21:40:47,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:40:49,128 INFO L124 PetriNetUnfolderBase]: 3268/7594 cut-off events. [2024-11-22 21:40:49,128 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2024-11-22 21:40:49,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12886 conditions, 7594 events. 3268/7594 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 61713 event pairs, 3059 based on Foata normal form. 520/6970 useless extension candidates. Maximal degree in co-relation 11382. Up to 5189 conditions per place. [2024-11-22 21:40:49,197 INFO L140 encePairwiseOnDemand]: 127/144 looper letters, 57 selfloop transitions, 2 changer transitions 0/128 dead transitions. [2024-11-22 21:40:49,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 128 transitions, 394 flow [2024-11-22 21:40:49,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:40:49,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:40:49,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2024-11-22 21:40:49,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6504629629629629 [2024-11-22 21:40:49,230 INFO L175 Difference]: Start difference. First operand has 129 places, 144 transitions, 308 flow. Second operand 3 states and 281 transitions. [2024-11-22 21:40:49,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 128 transitions, 394 flow [2024-11-22 21:40:49,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 128 transitions, 394 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 21:40:49,243 INFO L231 Difference]: Finished difference. Result has 128 places, 128 transitions, 280 flow [2024-11-22 21:40:49,248 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=128, PETRI_TRANSITIONS=128} [2024-11-22 21:40:49,254 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, -1 predicate places. [2024-11-22 21:40:49,257 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 128 transitions, 280 flow [2024-11-22 21:40:49,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2024-11-22 21:40:49,258 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:40:49,258 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-22 21:40:49,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:40:49,258 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-22 21:40:49,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:40:49,259 INFO L85 PathProgramCache]: Analyzing trace with hash 3699658, now seen corresponding path program 1 times [2024-11-22 21:40:49,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:40:49,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642086074] [2024-11-22 21:40:49,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:40:49,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:40:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:40:50,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:40:50,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:40:50,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642086074] [2024-11-22 21:40:50,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642086074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:40:50,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:40:50,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:40:50,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119255193] [2024-11-22 21:40:50,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:40:50,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:40:50,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:40:50,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:40:50,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:40:50,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 144 [2024-11-22 21:40:50,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 128 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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) [2024-11-22 21:40:50,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:40:50,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 144 [2024-11-22 21:40:50,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:40:51,121 INFO L124 PetriNetUnfolderBase]: 3268/7592 cut-off events. [2024-11-22 21:40:51,122 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-11-22 21:40:51,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12886 conditions, 7592 events. 3268/7592 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 61770 event pairs, 3059 based on Foata normal form. 2/6451 useless extension candidates. Maximal degree in co-relation 12870. Up to 5189 conditions per place. [2024-11-22 21:40:51,165 INFO L140 encePairwiseOnDemand]: 140/144 looper letters, 56 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2024-11-22 21:40:51,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 126 transitions, 392 flow [2024-11-22 21:40:51,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:40:51,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:40:51,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2024-11-22 21:40:51,169 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-22 21:40:51,169 INFO L175 Difference]: Start difference. First operand has 128 places, 128 transitions, 280 flow. Second operand 3 states and 270 transitions. [2024-11-22 21:40:51,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 126 transitions, 392 flow [2024-11-22 21:40:51,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 126 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:40:51,174 INFO L231 Difference]: Finished difference. Result has 126 places, 126 transitions, 276 flow [2024-11-22 21:40:51,174 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=276, PETRI_PLACES=126, PETRI_TRANSITIONS=126} [2024-11-22 21:40:51,175 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, -3 predicate places. [2024-11-22 21:40:51,175 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 126 transitions, 276 flow [2024-11-22 21:40:51,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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) [2024-11-22 21:40:51,175 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:40:51,175 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-22 21:40:51,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:40:51,176 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-22 21:40:51,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:40:51,177 INFO L85 PathProgramCache]: Analyzing trace with hash 114695531, now seen corresponding path program 1 times [2024-11-22 21:40:51,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:40:51,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45766938] [2024-11-22 21:40:51,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:40:51,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:40:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:40:51,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:40:51,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:40:51,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45766938] [2024-11-22 21:40:51,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45766938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:40:51,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:40:51,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:40:51,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811588076] [2024-11-22 21:40:51,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:40:51,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:40:51,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:40:51,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:40:51,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:40:51,581 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 144 [2024-11-22 21:40:51,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 126 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2024-11-22 21:40:51,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:40:51,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 144 [2024-11-22 21:40:51,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:40:52,236 INFO L124 PetriNetUnfolderBase]: 3268/7598 cut-off events. [2024-11-22 21:40:52,236 INFO L125 PetriNetUnfolderBase]: For 158/158 co-relation queries the response was YES. [2024-11-22 21:40:52,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12897 conditions, 7598 events. 3268/7598 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 61757 event pairs, 3059 based on Foata normal form. 1/6455 useless extension candidates. Maximal degree in co-relation 12872. Up to 5190 conditions per place. [2024-11-22 21:40:52,271 INFO L140 encePairwiseOnDemand]: 141/144 looper letters, 59 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2024-11-22 21:40:52,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 129 transitions, 408 flow [2024-11-22 21:40:52,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:40:52,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:40:52,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2024-11-22 21:40:52,278 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6435185185185185 [2024-11-22 21:40:52,278 INFO L175 Difference]: Start difference. First operand has 126 places, 126 transitions, 276 flow. Second operand 3 states and 278 transitions. [2024-11-22 21:40:52,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 129 transitions, 408 flow [2024-11-22 21:40:52,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 129 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:40:52,290 INFO L231 Difference]: Finished difference. Result has 127 places, 127 transitions, 284 flow [2024-11-22 21:40:52,291 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=127, PETRI_TRANSITIONS=127} [2024-11-22 21:40:52,292 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, -2 predicate places. [2024-11-22 21:40:52,292 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 127 transitions, 284 flow [2024-11-22 21:40:52,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2024-11-22 21:40:52,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:40:52,292 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-22 21:40:52,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 21:40:52,292 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-22 21:40:52,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:40:52,293 INFO L85 PathProgramCache]: Analyzing trace with hash -739479200, now seen corresponding path program 1 times [2024-11-22 21:40:52,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:40:52,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306169380] [2024-11-22 21:40:52,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:40:52,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:40:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:40:53,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:40:53,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:40:53,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306169380] [2024-11-22 21:40:53,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306169380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:40:53,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:40:53,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:40:53,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947312590] [2024-11-22 21:40:53,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:40:53,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:40:53,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:40:53,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:40:53,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:40:53,882 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 144 [2024-11-22 21:40:53,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 127 transitions, 284 flow. Second operand has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 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) [2024-11-22 21:40:53,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:40:53,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 144 [2024-11-22 21:40:53,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:40:55,700 INFO L124 PetriNetUnfolderBase]: 4054/9541 cut-off events. [2024-11-22 21:40:55,700 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2024-11-22 21:40:55,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16298 conditions, 9541 events. 4054/9541 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 83658 event pairs, 2177 based on Foata normal form. 2/8050 useless extension candidates. Maximal degree in co-relation 16278. Up to 3712 conditions per place. [2024-11-22 21:40:55,901 INFO L140 encePairwiseOnDemand]: 137/144 looper letters, 131 selfloop transitions, 4 changer transitions 0/199 dead transitions. [2024-11-22 21:40:55,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 199 transitions, 698 flow [2024-11-22 21:40:55,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:40:55,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:40:55,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 411 transitions. [2024-11-22 21:40:55,906 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7135416666666666 [2024-11-22 21:40:55,906 INFO L175 Difference]: Start difference. First operand has 127 places, 127 transitions, 284 flow. Second operand 4 states and 411 transitions. [2024-11-22 21:40:55,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 199 transitions, 698 flow [2024-11-22 21:40:55,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 199 transitions, 696 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:40:55,918 INFO L231 Difference]: Finished difference. Result has 131 places, 128 transitions, 312 flow [2024-11-22 21:40:55,918 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=312, PETRI_PLACES=131, PETRI_TRANSITIONS=128} [2024-11-22 21:40:55,919 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 2 predicate places. [2024-11-22 21:40:55,919 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 128 transitions, 312 flow [2024-11-22 21:40:55,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 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) [2024-11-22 21:40:55,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:40:55,919 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-22 21:40:55,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 21:40:55,920 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-22 21:40:55,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:40:55,923 INFO L85 PathProgramCache]: Analyzing trace with hash -739479199, now seen corresponding path program 1 times [2024-11-22 21:40:55,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:40:55,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377831318] [2024-11-22 21:40:55,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:40:55,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:40:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:40:57,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:40:57,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:40:57,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377831318] [2024-11-22 21:40:57,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377831318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:40:57,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:40:57,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:40:57,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308339587] [2024-11-22 21:40:57,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:40:57,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:40:57,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:40:57,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:40:57,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:40:58,078 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 144 [2024-11-22 21:40:58,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 128 transitions, 312 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 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) [2024-11-22 21:40:58,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:40:58,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 144 [2024-11-22 21:40:58,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:40:59,653 INFO L124 PetriNetUnfolderBase]: 4084/9802 cut-off events. [2024-11-22 21:40:59,653 INFO L125 PetriNetUnfolderBase]: For 1608/1608 co-relation queries the response was YES. [2024-11-22 21:40:59,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17694 conditions, 9802 events. 4084/9802 cut-off events. For 1608/1608 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 85882 event pairs, 3767 based on Foata normal form. 1/8406 useless extension candidates. Maximal degree in co-relation 17660. Up to 6645 conditions per place. [2024-11-22 21:40:59,745 INFO L140 encePairwiseOnDemand]: 141/144 looper letters, 64 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2024-11-22 21:40:59,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 130 transitions, 448 flow [2024-11-22 21:40:59,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:40:59,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:40:59,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2024-11-22 21:40:59,750 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6226851851851852 [2024-11-22 21:40:59,750 INFO L175 Difference]: Start difference. First operand has 131 places, 128 transitions, 312 flow. Second operand 3 states and 269 transitions. [2024-11-22 21:40:59,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 130 transitions, 448 flow [2024-11-22 21:40:59,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 130 transitions, 446 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:40:59,763 INFO L231 Difference]: Finished difference. Result has 133 places, 128 transitions, 318 flow [2024-11-22 21:40:59,764 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=133, PETRI_TRANSITIONS=128} [2024-11-22 21:40:59,765 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 4 predicate places. [2024-11-22 21:40:59,765 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 128 transitions, 318 flow [2024-11-22 21:40:59,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 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) [2024-11-22 21:40:59,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:40:59,766 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:40:59,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 21:40:59,766 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-22 21:40:59,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:40:59,767 INFO L85 PathProgramCache]: Analyzing trace with hash -933832169, now seen corresponding path program 1 times [2024-11-22 21:40:59,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:40:59,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046759624] [2024-11-22 21:40:59,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:40:59,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:40:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:41:00,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:00,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:41:00,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046759624] [2024-11-22 21:41:00,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046759624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:41:00,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403923960] [2024-11-22 21:41:00,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:41:00,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:41:00,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:41:00,215 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:41:00,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:41:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:41:01,073 INFO L255 TraceCheckSpWp]: Trace formula consists of 3752 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 21:41:01,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:41:01,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:01,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:41:01,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:01,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403923960] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:41:01,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:41:01,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-22 21:41:01,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412138417] [2024-11-22 21:41:01,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:41:01,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 21:41:01,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:41:01,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 21:41:01,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-22 21:41:01,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 144 [2024-11-22 21:41:01,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 128 transitions, 318 flow. Second operand has 7 states, 7 states have (on average 74.14285714285714) internal successors, (519), 7 states have internal predecessors, (519), 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) [2024-11-22 21:41:01,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:41:01,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 144 [2024-11-22 21:41:01,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:41:02,354 INFO L124 PetriNetUnfolderBase]: 3973/9582 cut-off events. [2024-11-22 21:41:02,355 INFO L125 PetriNetUnfolderBase]: For 955/1013 co-relation queries the response was YES. [2024-11-22 21:41:02,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17157 conditions, 9582 events. 3973/9582 cut-off events. For 955/1013 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 83707 event pairs, 3660 based on Foata normal form. 3/8202 useless extension candidates. Maximal degree in co-relation 17132. Up to 6451 conditions per place. [2024-11-22 21:41:02,393 INFO L140 encePairwiseOnDemand]: 140/144 looper letters, 64 selfloop transitions, 6 changer transitions 0/137 dead transitions. [2024-11-22 21:41:02,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 137 transitions, 480 flow [2024-11-22 21:41:02,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:41:02,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:41:02,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 503 transitions. [2024-11-22 21:41:02,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5821759259259259 [2024-11-22 21:41:02,395 INFO L175 Difference]: Start difference. First operand has 133 places, 128 transitions, 318 flow. Second operand 6 states and 503 transitions. [2024-11-22 21:41:02,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 137 transitions, 480 flow [2024-11-22 21:41:02,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 137 transitions, 476 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:41:02,398 INFO L231 Difference]: Finished difference. Result has 140 places, 131 transitions, 354 flow [2024-11-22 21:41:02,399 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=354, PETRI_PLACES=140, PETRI_TRANSITIONS=131} [2024-11-22 21:41:02,401 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 11 predicate places. [2024-11-22 21:41:02,401 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 131 transitions, 354 flow [2024-11-22 21:41:02,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.14285714285714) internal successors, (519), 7 states have internal predecessors, (519), 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) [2024-11-22 21:41:02,401 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:41:02,401 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-22 21:41:02,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 21:41:02,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-22 21:41:02,606 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-22 21:41:02,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:41:02,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1115900469, now seen corresponding path program 1 times [2024-11-22 21:41:02,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:41:02,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233968053] [2024-11-22 21:41:02,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:41:02,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:41:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:41:03,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:03,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:41:03,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233968053] [2024-11-22 21:41:03,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233968053] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:41:03,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708574775] [2024-11-22 21:41:03,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:41:03,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:41:03,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:41:03,321 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:41:03,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 21:41:03,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:41:03,812 INFO L255 TraceCheckSpWp]: Trace formula consists of 3789 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 21:41:03,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:41:03,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 21:41:03,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-22 21:41:03,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 21:41:03,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-22 21:41:03,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:03,968 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:41:04,069 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 21:41:04,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-22 21:41:04,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:04,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708574775] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:41:04,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:41:04,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-22 21:41:04,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115421499] [2024-11-22 21:41:04,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:41:04,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 21:41:04,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:41:04,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 21:41:04,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-22 21:41:05,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 144 [2024-11-22 21:41:05,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 131 transitions, 354 flow. Second operand has 14 states, 14 states have (on average 69.5) internal successors, (973), 14 states have internal predecessors, (973), 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) [2024-11-22 21:41:05,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:41:05,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 144 [2024-11-22 21:41:05,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:41:06,525 INFO L124 PetriNetUnfolderBase]: 4084/9814 cut-off events. [2024-11-22 21:41:06,526 INFO L125 PetriNetUnfolderBase]: For 1104/1104 co-relation queries the response was YES. [2024-11-22 21:41:06,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17744 conditions, 9814 events. 4084/9814 cut-off events. For 1104/1104 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 85901 event pairs, 3767 based on Foata normal form. 3/8420 useless extension candidates. Maximal degree in co-relation 17711. Up to 6645 conditions per place. [2024-11-22 21:41:06,572 INFO L140 encePairwiseOnDemand]: 141/144 looper letters, 70 selfloop transitions, 5 changer transitions 0/139 dead transitions. [2024-11-22 21:41:06,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 139 transitions, 532 flow [2024-11-22 21:41:06,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:41:06,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:41:06,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 484 transitions. [2024-11-22 21:41:06,574 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5601851851851852 [2024-11-22 21:41:06,574 INFO L175 Difference]: Start difference. First operand has 140 places, 131 transitions, 354 flow. Second operand 6 states and 484 transitions. [2024-11-22 21:41:06,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 139 transitions, 532 flow [2024-11-22 21:41:06,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 139 transitions, 522 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-22 21:41:06,577 INFO L231 Difference]: Finished difference. Result has 147 places, 132 transitions, 376 flow [2024-11-22 21:41:06,577 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=376, PETRI_PLACES=147, PETRI_TRANSITIONS=132} [2024-11-22 21:41:06,578 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 18 predicate places. [2024-11-22 21:41:06,578 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 132 transitions, 376 flow [2024-11-22 21:41:06,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 69.5) internal successors, (973), 14 states have internal predecessors, (973), 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) [2024-11-22 21:41:06,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:41:06,579 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1] [2024-11-22 21:41:06,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 21:41:06,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-22 21:41:06,783 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-22 21:41:06,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:41:06,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1205849115, now seen corresponding path program 2 times [2024-11-22 21:41:06,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:41:06,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187126149] [2024-11-22 21:41:06,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:41:06,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:41:06,851 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 21:41:06,851 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:41:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-22 21:41:07,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:41:07,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187126149] [2024-11-22 21:41:07,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187126149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:41:07,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:41:07,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:41:07,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377878837] [2024-11-22 21:41:07,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:41:07,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:41:07,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:41:07,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:41:07,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:41:07,048 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 144 [2024-11-22 21:41:07,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 132 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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) [2024-11-22 21:41:07,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:41:07,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 144 [2024-11-22 21:41:07,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:41:07,867 INFO L124 PetriNetUnfolderBase]: 4432/10447 cut-off events. [2024-11-22 21:41:07,868 INFO L125 PetriNetUnfolderBase]: For 929/929 co-relation queries the response was YES. [2024-11-22 21:41:07,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18912 conditions, 10447 events. 4432/10447 cut-off events. For 929/929 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 93460 event pairs, 2895 based on Foata normal form. 0/8958 useless extension candidates. Maximal degree in co-relation 18872. Up to 4460 conditions per place. [2024-11-22 21:41:07,909 INFO L140 encePairwiseOnDemand]: 140/144 looper letters, 101 selfloop transitions, 2 changer transitions 0/166 dead transitions. [2024-11-22 21:41:07,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 166 transitions, 654 flow [2024-11-22 21:41:07,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:41:07,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:41:07,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2024-11-22 21:41:07,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6990740740740741 [2024-11-22 21:41:07,910 INFO L175 Difference]: Start difference. First operand has 147 places, 132 transitions, 376 flow. Second operand 3 states and 302 transitions. [2024-11-22 21:41:07,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 166 transitions, 654 flow [2024-11-22 21:41:07,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 166 transitions, 646 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 21:41:07,915 INFO L231 Difference]: Finished difference. Result has 143 places, 130 transitions, 368 flow [2024-11-22 21:41:07,915 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=368, PETRI_PLACES=143, PETRI_TRANSITIONS=130} [2024-11-22 21:41:07,915 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 14 predicate places. [2024-11-22 21:41:07,916 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 130 transitions, 368 flow [2024-11-22 21:41:07,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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) [2024-11-22 21:41:07,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:41:07,916 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1] [2024-11-22 21:41:07,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 21:41:07,916 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-22 21:41:07,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:41:07,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1205849116, now seen corresponding path program 1 times [2024-11-22 21:41:07,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:41:07,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921187586] [2024-11-22 21:41:07,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:41:07,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:41:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:41:08,250 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:08,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:41:08,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921187586] [2024-11-22 21:41:08,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921187586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:41:08,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320153234] [2024-11-22 21:41:08,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:41:08,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:41:08,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:41:08,254 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:41:08,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 21:41:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:41:08,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 3977 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 21:41:08,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:41:08,779 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:08,779 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:41:08,845 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:08,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320153234] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:41:08,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:41:08,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-22 21:41:08,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942797570] [2024-11-22 21:41:08,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:41:08,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 21:41:08,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:41:08,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 21:41:08,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-22 21:41:08,858 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 144 [2024-11-22 21:41:08,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 130 transitions, 368 flow. Second operand has 13 states, 13 states have (on average 74.53846153846153) internal successors, (969), 13 states have internal predecessors, (969), 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) [2024-11-22 21:41:08,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:41:08,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 144 [2024-11-22 21:41:08,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:41:09,756 INFO L124 PetriNetUnfolderBase]: 3973/9593 cut-off events. [2024-11-22 21:41:09,757 INFO L125 PetriNetUnfolderBase]: For 1582/1640 co-relation queries the response was YES. [2024-11-22 21:41:09,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17531 conditions, 9593 events. 3973/9593 cut-off events. For 1582/1640 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 83495 event pairs, 3660 based on Foata normal form. 6/8232 useless extension candidates. Maximal degree in co-relation 17468. Up to 6451 conditions per place. [2024-11-22 21:41:09,812 INFO L140 encePairwiseOnDemand]: 140/144 looper letters, 76 selfloop transitions, 12 changer transitions 0/153 dead transitions. [2024-11-22 21:41:09,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 153 transitions, 650 flow [2024-11-22 21:41:09,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 21:41:09,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 21:41:09,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 956 transitions. [2024-11-22 21:41:09,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5532407407407407 [2024-11-22 21:41:09,814 INFO L175 Difference]: Start difference. First operand has 143 places, 130 transitions, 368 flow. Second operand 12 states and 956 transitions. [2024-11-22 21:41:09,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 153 transitions, 650 flow [2024-11-22 21:41:09,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 153 transitions, 646 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:41:09,818 INFO L231 Difference]: Finished difference. Result has 159 places, 136 transitions, 464 flow [2024-11-22 21:41:09,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=464, PETRI_PLACES=159, PETRI_TRANSITIONS=136} [2024-11-22 21:41:09,818 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 30 predicate places. [2024-11-22 21:41:09,818 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 136 transitions, 464 flow [2024-11-22 21:41:09,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 74.53846153846153) internal successors, (969), 13 states have internal predecessors, (969), 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) [2024-11-22 21:41:09,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:41:09,819 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-22 21:41:09,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 21:41:10,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:41:10,020 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-22 21:41:10,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:41:10,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1273456463, now seen corresponding path program 2 times [2024-11-22 21:41:10,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:41:10,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548880383] [2024-11-22 21:41:10,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:41:10,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:41:10,149 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:41:10,150 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:41:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:11,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:41:11,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548880383] [2024-11-22 21:41:11,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548880383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:41:11,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287995315] [2024-11-22 21:41:11,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:41:11,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:41:11,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:41:11,569 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:41:11,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 21:41:12,045 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:41:12,045 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:41:12,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 4014 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-22 21:41:12,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:41:12,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 21:41:12,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-22 21:41:12,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 21:41:12,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-22 21:41:12,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 21:41:12,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-22 21:41:12,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 21:41:12,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-22 21:41:12,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 21:41:12,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-22 21:41:12,411 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:12,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:41:12,513 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 21:41:12,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-22 21:41:12,652 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 21:41:12,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-22 21:41:12,804 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 21:41:12,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61