./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.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 4e7050d36e2131966739d0040816e49ede1f1e8b3b668f65d41876950193b1d8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:10:31,919 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:10:31,986 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:10:31,992 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:10:31,993 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:10:32,021 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:10:32,023 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:10:32,023 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:10:32,024 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:10:32,025 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:10:32,025 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:10:32,025 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:10:32,026 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:10:32,028 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:10:32,028 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:10:32,028 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:10:32,029 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:10:32,029 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:10:32,029 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:10:32,029 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:10:32,030 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:10:32,033 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:10:32,034 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:10:32,034 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:10:32,034 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:10:32,035 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:10:32,035 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:10:32,035 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:10:32,035 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:10:32,036 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:10:32,036 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:10:32,036 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:10:32,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:10:32,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:10:32,041 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:10:32,041 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:10:32,042 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:10:32,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:10:32,042 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:10:32,042 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:10:32,042 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:10:32,043 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:10:32,043 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e7050d36e2131966739d0040816e49ede1f1e8b3b668f65d41876950193b1d8 [2024-11-10 18:10:32,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:10:32,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:10:32,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:10:32,318 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:10:32,320 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:10:32,321 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2024-11-10 18:10:33,732 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:10:33,952 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:10:33,953 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2024-11-10 18:10:33,976 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/725a9fcd9/053ce8754c5e475695ca549d36386dda/FLAG3a2dce052 [2024-11-10 18:10:33,989 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/725a9fcd9/053ce8754c5e475695ca549d36386dda [2024-11-10 18:10:33,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:10:33,992 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:10:33,993 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:10:33,993 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:10:33,998 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:10:33,999 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:10:33" (1/1) ... [2024-11-10 18:10:34,000 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb284b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:34, skipping insertion in model container [2024-11-10 18:10:34,000 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:10:33" (1/1) ... [2024-11-10 18:10:34,042 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:10:34,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:10:34,731 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:10:34,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:10:34,881 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:10:34,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:34 WrapperNode [2024-11-10 18:10:34,882 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:10:34,883 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:10:34,883 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:10:34,883 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:10:34,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:34" (1/1) ... [2024-11-10 18:10:34,943 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:34" (1/1) ... [2024-11-10 18:10:35,056 INFO L138 Inliner]: procedures = 280, calls = 1606, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 1785 [2024-11-10 18:10:35,057 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:10:35,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:10:35,058 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:10:35,058 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:10:35,071 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:34" (1/1) ... [2024-11-10 18:10:35,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:34" (1/1) ... [2024-11-10 18:10:35,093 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:34" (1/1) ... [2024-11-10 18:10:35,146 INFO L175 MemorySlicer]: Split 1569 memory accesses to 8 slices as follows [2, 5, 259, 5, 2, 1280, 14, 2]. 82 percent of accesses are in the largest equivalence class. The 1548 initializations are split as follows [2, 5, 256, 5, 0, 1280, 0, 0]. The 11 writes are split as follows [0, 0, 1, 0, 1, 0, 8, 1]. [2024-11-10 18:10:35,147 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:34" (1/1) ... [2024-11-10 18:10:35,147 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:34" (1/1) ... [2024-11-10 18:10:35,187 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:34" (1/1) ... [2024-11-10 18:10:35,192 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:34" (1/1) ... [2024-11-10 18:10:35,198 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:34" (1/1) ... [2024-11-10 18:10:35,204 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:34" (1/1) ... [2024-11-10 18:10:35,218 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:10:35,219 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:10:35,219 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:10:35,220 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:10:35,220 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:34" (1/1) ... [2024-11-10 18:10:35,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:10:35,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:10:35,261 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 18:10:35,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 18:10:35,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 18:10:35,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 18:10:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-10 18:10:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-10 18:10:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-10 18:10:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-10 18:10:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-10 18:10:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-10 18:10:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-10 18:10:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-11-10 18:10:35,309 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-11-10 18:10:35,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 18:10:35,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-10 18:10:35,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-10 18:10:35,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-10 18:10:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-10 18:10:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-10 18:10:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-10 18:10:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-10 18:10:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-10 18:10:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 18:10:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 18:10:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 18:10:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 18:10:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 18:10:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-10 18:10:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-10 18:10:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-10 18:10:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-10 18:10:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-10 18:10:35,312 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-10 18:10:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 18:10:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 18:10:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 18:10:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 18:10:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-10 18:10:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-10 18:10:35,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-10 18:10:35,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-10 18:10:35,313 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 18:10:35,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 18:10:35,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:10:35,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 18:10:35,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-10 18:10:35,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-10 18:10:35,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-10 18:10:35,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-10 18:10:35,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-10 18:10:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-10 18:10:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-10 18:10:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:10:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 18:10:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 18:10:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 18:10:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-10 18:10:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-10 18:10:35,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-10 18:10:35,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-10 18:10:35,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:10:35,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:10:35,318 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:10:35,608 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:10:35,611 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:10:37,328 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1053: havoc main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset; [2024-11-10 18:10:37,328 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1053-1: SUMMARY for call ULTIMATE.dealloc(main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset); srcloc: null [2024-11-10 18:10:37,329 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1054: havoc main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset; [2024-11-10 18:10:37,329 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1054-1: SUMMARY for call ULTIMATE.dealloc(main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset); srcloc: null [2024-11-10 18:10:37,331 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:10:37,331 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:11:18,974 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:11:18,974 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:11:18,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:11:18 BoogieIcfgContainer [2024-11-10 18:11:18,974 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:11:18,978 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:11:18,978 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:11:18,981 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:11:18,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:10:33" (1/3) ... [2024-11-10 18:11:18,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f345b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:11:18, skipping insertion in model container [2024-11-10 18:11:18,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:34" (2/3) ... [2024-11-10 18:11:18,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f345b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:11:18, skipping insertion in model container [2024-11-10 18:11:18,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:11:18" (3/3) ... [2024-11-10 18:11:18,985 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2024-11-10 18:11:19,001 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:11:19,002 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2024-11-10 18:11:19,002 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:11:19,136 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-10 18:11:19,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 163 transitions, 346 flow [2024-11-10 18:11:19,315 INFO L124 PetriNetUnfolderBase]: 54/339 cut-off events. [2024-11-10 18:11:19,316 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-10 18:11:19,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 339 events. 54/339 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1780 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 174. Up to 8 conditions per place. [2024-11-10 18:11:19,330 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 163 transitions, 346 flow [2024-11-10 18:11:19,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 163 transitions, 346 flow [2024-11-10 18:11:19,348 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:11:19,355 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;@4bddae25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:11:19,355 INFO L334 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2024-11-10 18:11:19,390 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:11:19,391 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 18:11:19,391 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:11:19,391 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:19,392 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:11:19,393 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-10 18:11:19,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:19,397 INFO L85 PathProgramCache]: Analyzing trace with hash 116818355, now seen corresponding path program 1 times [2024-11-10 18:11:19,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:11:19,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136286641] [2024-11-10 18:11:19,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:19,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:11:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:20,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:20,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:11:20,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136286641] [2024-11-10 18:11:20,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136286641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:20,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:20,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:11:20,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100333181] [2024-11-10 18:11:20,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:20,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:11:20,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:11:20,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:11:20,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:11:20,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 163 [2024-11-10 18:11:20,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 163 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:20,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:20,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 163 [2024-11-10 18:11:20,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:21,685 INFO L124 PetriNetUnfolderBase]: 3268/7777 cut-off events. [2024-11-10 18:11:21,685 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-11-10 18:11:21,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13069 conditions, 7777 events. 3268/7777 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 67419 event pairs, 3059 based on Foata normal form. 1600/8532 useless extension candidates. Maximal degree in co-relation 11529. Up to 5189 conditions per place. [2024-11-10 18:11:21,750 INFO L140 encePairwiseOnDemand]: 141/163 looper letters, 57 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2024-11-10 18:11:21,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 142 transitions, 422 flow [2024-11-10 18:11:21,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:11:21,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:11:21,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2024-11-10 18:11:21,763 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6707566462167689 [2024-11-10 18:11:21,765 INFO L175 Difference]: Start difference. First operand has 143 places, 163 transitions, 346 flow. Second operand 3 states and 328 transitions. [2024-11-10 18:11:21,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 142 transitions, 422 flow [2024-11-10 18:11:21,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 142 transitions, 422 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:11:21,777 INFO L231 Difference]: Finished difference. Result has 142 places, 142 transitions, 308 flow [2024-11-10 18:11:21,779 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=142, PETRI_TRANSITIONS=142} [2024-11-10 18:11:21,786 INFO L277 CegarLoopForPetriNet]: 143 programPoint places, -1 predicate places. [2024-11-10 18:11:21,786 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 142 transitions, 308 flow [2024-11-10 18:11:21,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:21,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:21,788 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:11:21,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:11:21,788 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-10 18:11:21,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:21,789 INFO L85 PathProgramCache]: Analyzing trace with hash 116818356, now seen corresponding path program 1 times [2024-11-10 18:11:21,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:11:21,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469245588] [2024-11-10 18:11:21,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:21,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:11:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:22,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:22,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:11:22,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469245588] [2024-11-10 18:11:22,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469245588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:22,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:22,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:11:22,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634447545] [2024-11-10 18:11:22,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:22,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:11:22,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:11:22,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:11:22,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:11:22,798 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 163 [2024-11-10 18:11:22,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 142 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:22,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:22,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 163 [2024-11-10 18:11:22,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:23,719 INFO L124 PetriNetUnfolderBase]: 3268/7775 cut-off events. [2024-11-10 18:11:23,720 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2024-11-10 18:11:23,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13069 conditions, 7775 events. 3268/7775 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 67463 event pairs, 3059 based on Foata normal form. 2/6932 useless extension candidates. Maximal degree in co-relation 13053. Up to 5189 conditions per place. [2024-11-10 18:11:23,772 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 56 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2024-11-10 18:11:23,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 140 transitions, 420 flow [2024-11-10 18:11:23,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:11:23,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:11:23,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2024-11-10 18:11:23,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6380368098159509 [2024-11-10 18:11:23,778 INFO L175 Difference]: Start difference. First operand has 142 places, 142 transitions, 308 flow. Second operand 3 states and 312 transitions. [2024-11-10 18:11:23,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 140 transitions, 420 flow [2024-11-10 18:11:23,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 140 transitions, 416 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:11:23,782 INFO L231 Difference]: Finished difference. Result has 140 places, 140 transitions, 304 flow [2024-11-10 18:11:23,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=140, PETRI_TRANSITIONS=140} [2024-11-10 18:11:23,783 INFO L277 CegarLoopForPetriNet]: 143 programPoint places, -3 predicate places. [2024-11-10 18:11:23,783 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 140 transitions, 304 flow [2024-11-10 18:11:23,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:23,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:23,784 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 18:11:23,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:11:23,784 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-10 18:11:23,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:23,785 INFO L85 PathProgramCache]: Analyzing trace with hash 593407266, now seen corresponding path program 1 times [2024-11-10 18:11:23,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:11:23,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233354914] [2024-11-10 18:11:23,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:23,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:11:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:24,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:24,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:11:24,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233354914] [2024-11-10 18:11:24,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233354914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:24,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:24,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:11:24,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918338107] [2024-11-10 18:11:24,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:24,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:11:24,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:11:24,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:11:24,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:11:24,650 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2024-11-10 18:11:24,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 140 transitions, 304 flow. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:24,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:24,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2024-11-10 18:11:24,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:25,748 INFO L124 PetriNetUnfolderBase]: 4064/9587 cut-off events. [2024-11-10 18:11:25,749 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-11-10 18:11:25,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16336 conditions, 9587 events. 4064/9587 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 85445 event pairs, 2177 based on Foata normal form. 0/8615 useless extension candidates. Maximal degree in co-relation 16320. Up to 3708 conditions per place. [2024-11-10 18:11:25,810 INFO L140 encePairwiseOnDemand]: 156/163 looper letters, 130 selfloop transitions, 4 changer transitions 0/212 dead transitions. [2024-11-10 18:11:25,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 212 transitions, 716 flow [2024-11-10 18:11:25,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:11:25,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:11:25,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 467 transitions. [2024-11-10 18:11:25,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7162576687116564 [2024-11-10 18:11:25,814 INFO L175 Difference]: Start difference. First operand has 140 places, 140 transitions, 304 flow. Second operand 4 states and 467 transitions. [2024-11-10 18:11:25,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 212 transitions, 716 flow [2024-11-10 18:11:25,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 212 transitions, 712 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:11:25,824 INFO L231 Difference]: Finished difference. Result has 143 places, 141 transitions, 330 flow [2024-11-10 18:11:25,826 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=330, PETRI_PLACES=143, PETRI_TRANSITIONS=141} [2024-11-10 18:11:25,826 INFO L277 CegarLoopForPetriNet]: 143 programPoint places, 0 predicate places. [2024-11-10 18:11:25,826 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 141 transitions, 330 flow [2024-11-10 18:11:25,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:25,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:25,827 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 18:11:25,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 18:11:25,827 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-10 18:11:25,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:25,828 INFO L85 PathProgramCache]: Analyzing trace with hash 593407267, now seen corresponding path program 1 times [2024-11-10 18:11:25,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:11:25,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743395924] [2024-11-10 18:11:25,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:25,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:11:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:26,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:11:26,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743395924] [2024-11-10 18:11:26,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743395924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:26,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:26,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:11:26,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278640498] [2024-11-10 18:11:26,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:26,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:11:26,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:11:26,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:11:26,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:11:26,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 163 [2024-11-10 18:11:26,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 141 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:26,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:26,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 163 [2024-11-10 18:11:26,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:27,808 INFO L124 PetriNetUnfolderBase]: 4084/9982 cut-off events. [2024-11-10 18:11:27,808 INFO L125 PetriNetUnfolderBase]: For 1613/1640 co-relation queries the response was YES. [2024-11-10 18:11:27,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17870 conditions, 9982 events. 4084/9982 cut-off events. For 1613/1640 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 91135 event pairs, 3767 based on Foata normal form. 0/8949 useless extension candidates. Maximal degree in co-relation 16013. Up to 6646 conditions per place. [2024-11-10 18:11:27,875 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 65 selfloop transitions, 2 changer transitions 0/144 dead transitions. [2024-11-10 18:11:27,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 144 transitions, 470 flow [2024-11-10 18:11:27,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:11:27,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:11:27,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2024-11-10 18:11:27,876 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6339468302658486 [2024-11-10 18:11:27,876 INFO L175 Difference]: Start difference. First operand has 143 places, 141 transitions, 330 flow. Second operand 3 states and 310 transitions. [2024-11-10 18:11:27,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 144 transitions, 470 flow [2024-11-10 18:11:27,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 144 transitions, 468 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:11:27,890 INFO L231 Difference]: Finished difference. Result has 145 places, 142 transitions, 342 flow [2024-11-10 18:11:27,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=145, PETRI_TRANSITIONS=142} [2024-11-10 18:11:27,892 INFO L277 CegarLoopForPetriNet]: 143 programPoint places, 2 predicate places. [2024-11-10 18:11:27,892 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 142 transitions, 342 flow [2024-11-10 18:11:27,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:27,893 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:27,894 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1] [2024-11-10 18:11:27,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 18:11:27,894 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-10 18:11:27,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:27,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1862893357, now seen corresponding path program 1 times [2024-11-10 18:11:27,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:11:27,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062066687] [2024-11-10 18:11:27,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:27,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:11:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:28,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:28,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:11:28,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062066687] [2024-11-10 18:11:28,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062066687] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:11:28,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689204245] [2024-11-10 18:11:28,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:28,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:11:28,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:11:28,980 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) [2024-11-10 18:11:28,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 18:11:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:29,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 3791 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 18:11:29,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:29,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 18:11:29,634 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 [2024-11-10 18:11:29,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 18:11:29,732 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 [2024-11-10 18:11:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:29,773 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:11:29,940 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:11:29,941 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 [2024-11-10 18:11:30,085 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:30,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689204245] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:11:30,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:11:30,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-10 18:11:30,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576617031] [2024-11-10 18:11:30,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:11:30,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 18:11:30,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:11:30,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 18:11:30,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-10 18:11:31,650 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 163 [2024-11-10 18:11:31,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 142 transitions, 342 flow. Second operand has 14 states, 14 states have (on average 82.5) internal successors, (1155), 14 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:31,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:31,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 163 [2024-11-10 18:11:31,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:32,977 INFO L124 PetriNetUnfolderBase]: 4086/10001 cut-off events. [2024-11-10 18:11:32,977 INFO L125 PetriNetUnfolderBase]: For 1079/1106 co-relation queries the response was YES. [2024-11-10 18:11:33,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17914 conditions, 10001 events. 4086/10001 cut-off events. For 1079/1106 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 91275 event pairs, 3767 based on Foata normal form. 1/8970 useless extension candidates. Maximal degree in co-relation 17891. Up to 6648 conditions per place. [2024-11-10 18:11:33,055 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 72 selfloop transitions, 8 changer transitions 0/157 dead transitions. [2024-11-10 18:11:33,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 157 transitions, 542 flow [2024-11-10 18:11:33,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 18:11:33,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 18:11:33,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 649 transitions. [2024-11-10 18:11:33,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5687992988606485 [2024-11-10 18:11:33,058 INFO L175 Difference]: Start difference. First operand has 145 places, 142 transitions, 342 flow. Second operand 7 states and 649 transitions. [2024-11-10 18:11:33,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 157 transitions, 542 flow [2024-11-10 18:11:33,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 157 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:11:33,066 INFO L231 Difference]: Finished difference. Result has 154 places, 148 transitions, 398 flow [2024-11-10 18:11:33,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=398, PETRI_PLACES=154, PETRI_TRANSITIONS=148} [2024-11-10 18:11:33,067 INFO L277 CegarLoopForPetriNet]: 143 programPoint places, 11 predicate places. [2024-11-10 18:11:33,067 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 148 transitions, 398 flow [2024-11-10 18:11:33,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 82.5) internal successors, (1155), 14 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:33,068 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:33,068 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:33,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 18:11:33,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:11:33,269 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-10 18:11:33,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:33,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1330986923, now seen corresponding path program 1 times [2024-11-10 18:11:33,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:11:33,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306116665] [2024-11-10 18:11:33,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:33,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:11:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 18:11:33,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:11:33,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306116665] [2024-11-10 18:11:33,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306116665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:33,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:33,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:11:33,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540575553] [2024-11-10 18:11:33,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:33,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:11:33,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:11:33,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:11:33,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:11:33,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2024-11-10 18:11:33,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 148 transitions, 398 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:33,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:33,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2024-11-10 18:11:33,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:34,749 INFO L124 PetriNetUnfolderBase]: 4444/10563 cut-off events. [2024-11-10 18:11:34,749 INFO L125 PetriNetUnfolderBase]: For 925/952 co-relation queries the response was YES. [2024-11-10 18:11:34,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19026 conditions, 10563 events. 4444/10563 cut-off events. For 925/952 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 96916 event pairs, 2895 based on Foata normal form. 0/9571 useless extension candidates. Maximal degree in co-relation 18967. Up to 4462 conditions per place. [2024-11-10 18:11:34,840 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 101 selfloop transitions, 4 changer transitions 0/182 dead transitions. [2024-11-10 18:11:34,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 182 transitions, 680 flow [2024-11-10 18:11:34,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:11:34,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:11:34,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2024-11-10 18:11:34,842 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7034764826175869 [2024-11-10 18:11:34,843 INFO L175 Difference]: Start difference. First operand has 154 places, 148 transitions, 398 flow. Second operand 3 states and 344 transitions. [2024-11-10 18:11:34,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 182 transitions, 680 flow [2024-11-10 18:11:34,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 182 transitions, 676 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 18:11:34,851 INFO L231 Difference]: Finished difference. Result has 153 places, 146 transitions, 398 flow [2024-11-10 18:11:34,851 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=398, PETRI_PLACES=153, PETRI_TRANSITIONS=146} [2024-11-10 18:11:34,853 INFO L277 CegarLoopForPetriNet]: 143 programPoint places, 10 predicate places. [2024-11-10 18:11:34,854 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 146 transitions, 398 flow [2024-11-10 18:11:34,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:34,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:34,854 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:34,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 18:11:34,855 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-10 18:11:34,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:34,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1330986924, now seen corresponding path program 1 times [2024-11-10 18:11:34,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:11:34,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731482591] [2024-11-10 18:11:34,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:34,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:11:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:35,304 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:35,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:11:35,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731482591] [2024-11-10 18:11:35,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731482591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:11:35,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411230354] [2024-11-10 18:11:35,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:35,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:11:35,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:11:35,308 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) [2024-11-10 18:11:35,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 18:11:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:35,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 3831 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 18:11:35,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:35,800 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:11:35,828 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:35,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411230354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:11:35,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:11:35,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-10 18:11:35,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731670005] [2024-11-10 18:11:35,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:11:35,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 18:11:35,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:11:35,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 18:11:35,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-10 18:11:35,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 163 [2024-11-10 18:11:35,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 146 transitions, 398 flow. Second operand has 9 states, 9 states have (on average 87.44444444444444) internal successors, (787), 9 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:35,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:35,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 163 [2024-11-10 18:11:35,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:36,937 INFO L124 PetriNetUnfolderBase]: 3973/9782 cut-off events. [2024-11-10 18:11:36,938 INFO L125 PetriNetUnfolderBase]: For 1520/1595 co-relation queries the response was YES. [2024-11-10 18:11:36,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17671 conditions, 9782 events. 3973/9782 cut-off events. For 1520/1595 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 89105 event pairs, 3660 based on Foata normal form. 4/8783 useless extension candidates. Maximal degree in co-relation 17608. Up to 6452 conditions per place. [2024-11-10 18:11:36,996 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 69 selfloop transitions, 8 changer transitions 0/155 dead transitions. [2024-11-10 18:11:36,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 155 transitions, 574 flow [2024-11-10 18:11:36,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 18:11:36,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 18:11:37,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 759 transitions. [2024-11-10 18:11:37,001 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5820552147239264 [2024-11-10 18:11:37,001 INFO L175 Difference]: Start difference. First operand has 153 places, 146 transitions, 398 flow. Second operand 8 states and 759 transitions. [2024-11-10 18:11:37,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 155 transitions, 574 flow [2024-11-10 18:11:37,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 155 transitions, 564 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-10 18:11:37,007 INFO L231 Difference]: Finished difference. Result has 163 places, 146 transitions, 422 flow [2024-11-10 18:11:37,007 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=422, PETRI_PLACES=163, PETRI_TRANSITIONS=146} [2024-11-10 18:11:37,008 INFO L277 CegarLoopForPetriNet]: 143 programPoint places, 20 predicate places. [2024-11-10 18:11:37,008 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 146 transitions, 422 flow [2024-11-10 18:11:37,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 87.44444444444444) internal successors, (787), 9 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:37,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:37,009 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1] [2024-11-10 18:11:37,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 18:11:37,210 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 [2024-11-10 18:11:37,210 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-10 18:11:37,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:37,215 INFO L85 PathProgramCache]: Analyzing trace with hash -575223517, now seen corresponding path program 2 times [2024-11-10 18:11:37,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:11:37,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346742490] [2024-11-10 18:11:37,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:37,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:11:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:39,266 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:39,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:11:39,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346742490] [2024-11-10 18:11:39,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346742490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:11:39,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119902494] [2024-11-10 18:11:39,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:11:39,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:11:39,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:11:39,268 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) [2024-11-10 18:11:39,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 18:11:39,782 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:11:39,782 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:11:39,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 4019 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-10 18:11:39,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:39,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 18:11:39,842 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 [2024-11-10 18:11:39,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 18:11:39,929 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 [2024-11-10 18:11:40,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 18:11:40,008 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 [2024-11-10 18:11:40,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 18:11:40,096 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 [2024-11-10 18:11:40,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 18:11:40,173 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 [2024-11-10 18:11:40,211 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:40,211 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:11:40,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:11:40,337 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 [2024-11-10 18:11:40,479 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:11:40,479 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 [2024-11-10 18:11:40,633 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:11:40,634 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 [2024-11-10 18:11:40,809 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:11:40,810 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 [2024-11-10 18:11:40,984 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:40,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119902494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:11:40,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:11:40,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2024-11-10 18:11:40,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685970248] [2024-11-10 18:11:40,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:11:40,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-10 18:11:40,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:11:40,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-10 18:11:40,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=805, Unknown=0, NotChecked=0, Total=992