./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31cb1278-55a2-44ae-ab74-459a998bace4/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31cb1278-55a2-44ae-ab74-459a998bace4/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31cb1278-55a2-44ae-ab74-459a998bace4/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31cb1278-55a2-44ae-ab74-459a998bace4/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31cb1278-55a2-44ae-ab74-459a998bace4/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31cb1278-55a2-44ae-ab74-459a998bace4/bin/uautomizer-verify-qhAvR1uOyd --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 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:13:22,391 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:13:22,467 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31cb1278-55a2-44ae-ab74-459a998bace4/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 16:13:22,474 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:13:22,474 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:13:22,510 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:13:22,512 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:13:22,513 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:13:22,513 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:13:22,514 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:13:22,515 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:13:22,515 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:13:22,516 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:13:22,516 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:13:22,516 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:13:22,516 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:13:22,517 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:13:22,518 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:13:22,518 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:13:22,518 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:13:22,518 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 16:13:22,518 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 16:13:22,519 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 16:13:22,519 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:13:22,519 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 16:13:22,519 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:13:22,519 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 16:13:22,519 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:13:22,519 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:13:22,520 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:13:22,520 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:13:22,520 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:13:22,520 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:13:22,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:13:22,520 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:13:22,520 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:13:22,520 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:13:22,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:13:22,521 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:13:22,521 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:13:22,521 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:13:22,521 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:13:22,521 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31cb1278-55a2-44ae-ab74-459a998bace4/bin/uautomizer-verify-qhAvR1uOyd 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 -> 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e [2024-11-13 16:13:22,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:13:22,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:13:22,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:13:22,927 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:13:22,927 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:13:22,929 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31cb1278-55a2-44ae-ab74-459a998bace4/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i Unable to find full path for "g++" [2024-11-13 16:13:25,344 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:13:25,876 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:13:25,877 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31cb1278-55a2-44ae-ab74-459a998bace4/sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2024-11-13 16:13:25,925 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31cb1278-55a2-44ae-ab74-459a998bace4/bin/uautomizer-verify-qhAvR1uOyd/data/43255207b/851959a032a14502b0353fef07cf3eb5/FLAG8e693f936 [2024-11-13 16:13:25,953 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31cb1278-55a2-44ae-ab74-459a998bace4/bin/uautomizer-verify-qhAvR1uOyd/data/43255207b/851959a032a14502b0353fef07cf3eb5 [2024-11-13 16:13:25,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:13:25,958 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:13:25,962 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:13:25,963 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:13:25,968 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:13:25,969 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:13:25" (1/1) ... [2024-11-13 16:13:25,971 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6acd5026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:13:25, skipping insertion in model container [2024-11-13 16:13:25,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:13:25" (1/1) ... [2024-11-13 16:13:26,061 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:13:27,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:13:27,341 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:13:27,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:13:27,734 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:13:27,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:13:27 WrapperNode [2024-11-13 16:13:27,735 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:13:27,736 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:13:27,736 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:13:27,737 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:13:27,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:13:27" (1/1) ... [2024-11-13 16:13:27,798 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:13:27" (1/1) ... [2024-11-13 16:13:27,847 INFO L138 Inliner]: procedures = 528, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 108 [2024-11-13 16:13:27,847 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:13:27,848 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:13:27,848 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:13:27,851 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:13:27,864 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:13:27" (1/1) ... [2024-11-13 16:13:27,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:13:27" (1/1) ... [2024-11-13 16:13:27,874 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:13:27" (1/1) ... [2024-11-13 16:13:27,903 INFO L175 MemorySlicer]: Split 16 memory accesses to 9 slices as follows [1, 8, 1, 1, 1, 1, 1, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [0, 8, 0, 0, 0, 0, 0, 0, 0]. The 8 writes are split as follows [1, 0, 1, 1, 1, 1, 1, 1, 1]. [2024-11-13 16:13:27,904 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:13:27" (1/1) ... [2024-11-13 16:13:27,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:13:27" (1/1) ... [2024-11-13 16:13:27,927 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:13:27" (1/1) ... [2024-11-13 16:13:27,940 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:13:27" (1/1) ... [2024-11-13 16:13:27,953 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:13:27" (1/1) ... [2024-11-13 16:13:27,959 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:13:27" (1/1) ... [2024-11-13 16:13:27,973 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:13:27,978 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:13:27,978 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:13:27,978 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:13:27,980 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:13:27" (1/1) ... [2024-11-13 16:13:27,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:13:28,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31cb1278-55a2-44ae-ab74-459a998bace4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:13:28,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31cb1278-55a2-44ae-ab74-459a998bace4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:13:28,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31cb1278-55a2-44ae-ab74-459a998bace4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:13:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure counter_thread [2024-11-13 16:13:28,074 INFO L138 BoogieDeclarations]: Found implementation of procedure counter_thread [2024-11-13 16:13:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure monitor_thread [2024-11-13 16:13:28,074 INFO L138 BoogieDeclarations]: Found implementation of procedure monitor_thread [2024-11-13 16:13:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 16:13:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 16:13:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:13:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:13:28,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:13:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 16:13:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 16:13:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 16:13:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-13 16:13:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-13 16:13:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-13 16:13:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-13 16:13:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-13 16:13:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-13 16:13:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-11-13 16:13:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 16:13:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 16:13:28,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 16:13:28,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 16:13:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 16:13:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-13 16:13:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-13 16:13:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-13 16:13:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-13 16:13:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-13 16:13:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 16:13:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 16:13:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 16:13:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 16:13:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-13 16:13:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-13 16:13:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-13 16:13:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-13 16:13:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-13 16:13:28,083 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 16:13:28,626 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:13:28,628 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:13:29,301 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 16:13:29,301 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:13:29,543 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:13:29,543 INFO L316 CfgBuilder]: Removed 19 assume(true) statements. [2024-11-13 16:13:29,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:13:29 BoogieIcfgContainer [2024-11-13 16:13:29,544 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:13:29,547 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:13:29,547 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:13:29,553 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:13:29,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:13:25" (1/3) ... [2024-11-13 16:13:29,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28bd064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:13:29, skipping insertion in model container [2024-11-13 16:13:29,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:13:27" (2/3) ... [2024-11-13 16:13:29,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28bd064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:13:29, skipping insertion in model container [2024-11-13 16:13:29,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:13:29" (3/3) ... [2024-11-13 16:13:29,557 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_36-trylock_nr.i [2024-11-13 16:13:29,577 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:13:29,579 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 04-mutex_36-trylock_nr.i that has 3 procedures, 102 locations, 1 initial locations, 11 loop locations, and 17 error locations. [2024-11-13 16:13:29,579 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 16:13:29,733 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 16:13:29,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 140 transitions, 294 flow [2024-11-13 16:13:29,897 INFO L124 PetriNetUnfolderBase]: 39/138 cut-off events. [2024-11-13 16:13:29,904 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 16:13:29,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 138 events. 39/138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 395 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 105. Up to 5 conditions per place. [2024-11-13 16:13:29,915 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 140 transitions, 294 flow [2024-11-13 16:13:29,925 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 137 transitions, 286 flow [2024-11-13 16:13:29,938 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:13:29,963 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;@e8cb3e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:13:29,963 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-11-13 16:13:29,972 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 16:13:29,972 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-13 16:13:29,972 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 16:13:29,972 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:13:29,975 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 16:13:29,976 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-13 16:13:29,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:13:29,982 INFO L85 PathProgramCache]: Analyzing trace with hash 582274, now seen corresponding path program 1 times [2024-11-13 16:13:29,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:13:29,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129501673] [2024-11-13 16:13:29,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:29,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:13:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:30,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:13:30,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:13:30,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129501673] [2024-11-13 16:13:30,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129501673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:13:30,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:13:30,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 16:13:30,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195361733] [2024-11-13 16:13:30,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:13:30,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:13:30,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:13:30,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:13:30,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:13:30,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 140 [2024-11-13 16:13:30,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 137 transitions, 286 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) [2024-11-13 16:13:30,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:13:30,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 140 [2024-11-13 16:13:30,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:13:31,643 INFO L124 PetriNetUnfolderBase]: 1073/3046 cut-off events. [2024-11-13 16:13:31,645 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-11-13 16:13:31,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4747 conditions, 3046 events. 1073/3046 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 26072 event pairs, 393 based on Foata normal form. 1045/3132 useless extension candidates. Maximal degree in co-relation 4538. Up to 885 conditions per place. [2024-11-13 16:13:31,685 INFO L140 encePairwiseOnDemand]: 112/140 looper letters, 64 selfloop transitions, 9 changer transitions 5/136 dead transitions. [2024-11-13 16:13:31,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 136 transitions, 438 flow [2024-11-13 16:13:31,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:13:31,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:13:31,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 326 transitions. [2024-11-13 16:13:31,714 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7761904761904762 [2024-11-13 16:13:31,716 INFO L175 Difference]: Start difference. First operand has 105 places, 137 transitions, 286 flow. Second operand 3 states and 326 transitions. [2024-11-13 16:13:31,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 136 transitions, 438 flow [2024-11-13 16:13:31,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 136 transitions, 426 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 16:13:31,740 INFO L231 Difference]: Finished difference. Result has 95 places, 104 transitions, 253 flow [2024-11-13 16:13:31,745 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=95, PETRI_TRANSITIONS=104} [2024-11-13 16:13:31,750 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -10 predicate places. [2024-11-13 16:13:31,751 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 104 transitions, 253 flow [2024-11-13 16:13:31,751 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) [2024-11-13 16:13:31,752 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:13:31,752 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:13:31,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:13:31,753 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-13 16:13:31,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:13:31,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1671119588, now seen corresponding path program 1 times [2024-11-13 16:13:31,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:13:31,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575655737] [2024-11-13 16:13:31,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:31,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:13:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:32,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:13:32,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:13:32,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575655737] [2024-11-13 16:13:32,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575655737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:13:32,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:13:32,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:13:32,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980441234] [2024-11-13 16:13:32,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:13:32,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:13:32,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:13:32,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:13:32,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:13:32,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 140 [2024-11-13 16:13:32,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 104 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2024-11-13 16:13:32,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:13:32,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 140 [2024-11-13 16:13:32,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:13:32,701 INFO L124 PetriNetUnfolderBase]: 1177/2824 cut-off events. [2024-11-13 16:13:32,701 INFO L125 PetriNetUnfolderBase]: For 344/344 co-relation queries the response was YES. [2024-11-13 16:13:32,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5196 conditions, 2824 events. 1177/2824 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21708 event pairs, 843 based on Foata normal form. 0/2145 useless extension candidates. Maximal degree in co-relation 2039. Up to 1653 conditions per place. [2024-11-13 16:13:32,731 INFO L140 encePairwiseOnDemand]: 138/140 looper letters, 59 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2024-11-13 16:13:32,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 116 transitions, 403 flow [2024-11-13 16:13:32,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:13:32,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:13:32,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2024-11-13 16:13:32,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2024-11-13 16:13:32,736 INFO L175 Difference]: Start difference. First operand has 95 places, 104 transitions, 253 flow. Second operand 3 states and 265 transitions. [2024-11-13 16:13:32,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 116 transitions, 403 flow [2024-11-13 16:13:32,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 116 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 16:13:32,749 INFO L231 Difference]: Finished difference. Result has 92 places, 103 transitions, 246 flow [2024-11-13 16:13:32,749 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=92, PETRI_TRANSITIONS=103} [2024-11-13 16:13:32,751 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -13 predicate places. [2024-11-13 16:13:32,752 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 103 transitions, 246 flow [2024-11-13 16:13:32,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2024-11-13 16:13:32,752 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:13:32,752 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:13:32,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 16:13:32,753 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-13 16:13:32,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:13:32,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1671119587, now seen corresponding path program 1 times [2024-11-13 16:13:32,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:13:32,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610450484] [2024-11-13 16:13:32,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:32,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:13:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:33,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:13:33,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:13:33,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610450484] [2024-11-13 16:13:33,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610450484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:13:33,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:13:33,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:13:33,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266101066] [2024-11-13 16:13:33,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:13:33,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:13:33,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:13:33,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:13:33,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:13:33,196 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 140 [2024-11-13 16:13:33,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 103 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2024-11-13 16:13:33,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:13:33,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 140 [2024-11-13 16:13:33,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:13:33,792 INFO L124 PetriNetUnfolderBase]: 1175/2823 cut-off events. [2024-11-13 16:13:33,792 INFO L125 PetriNetUnfolderBase]: For 368/368 co-relation queries the response was YES. [2024-11-13 16:13:33,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4955 conditions, 2823 events. 1175/2823 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21796 event pairs, 841 based on Foata normal form. 0/2138 useless extension candidates. Maximal degree in co-relation 4787. Up to 1659 conditions per place. [2024-11-13 16:13:33,822 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 56 selfloop transitions, 5 changer transitions 2/117 dead transitions. [2024-11-13 16:13:33,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 117 transitions, 404 flow [2024-11-13 16:13:33,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:13:33,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:13:33,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2024-11-13 16:13:33,828 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-11-13 16:13:33,830 INFO L175 Difference]: Start difference. First operand has 92 places, 103 transitions, 246 flow. Second operand 3 states and 267 transitions. [2024-11-13 16:13:33,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 117 transitions, 404 flow [2024-11-13 16:13:33,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 117 transitions, 402 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 16:13:33,839 INFO L231 Difference]: Finished difference. Result has 95 places, 106 transitions, 282 flow [2024-11-13 16:13:33,840 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=95, PETRI_TRANSITIONS=106} [2024-11-13 16:13:33,841 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -10 predicate places. [2024-11-13 16:13:33,841 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 106 transitions, 282 flow [2024-11-13 16:13:33,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2024-11-13 16:13:33,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:13:33,843 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:13:33,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 16:13:33,843 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting counter_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-13 16:13:33,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:13:33,844 INFO L85 PathProgramCache]: Analyzing trace with hash 22742674, now seen corresponding path program 1 times [2024-11-13 16:13:33,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:13:33,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676136424] [2024-11-13 16:13:33,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:33,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:13:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:34,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:13:34,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:13:34,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676136424] [2024-11-13 16:13:34,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676136424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:13:34,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:13:34,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:13:34,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26997543] [2024-11-13 16:13:34,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:13:34,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:13:34,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:13:34,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:13:34,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:13:34,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2024-11-13 16:13:34,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 106 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 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) [2024-11-13 16:13:34,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:13:34,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2024-11-13 16:13:34,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:13:34,878 INFO L124 PetriNetUnfolderBase]: 1536/3282 cut-off events. [2024-11-13 16:13:34,878 INFO L125 PetriNetUnfolderBase]: For 596/596 co-relation queries the response was YES. [2024-11-13 16:13:34,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6271 conditions, 3282 events. 1536/3282 cut-off events. For 596/596 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23679 event pairs, 540 based on Foata normal form. 0/2683 useless extension candidates. Maximal degree in co-relation 6075. Up to 1148 conditions per place. [2024-11-13 16:13:34,906 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 119 selfloop transitions, 6 changer transitions 0/174 dead transitions. [2024-11-13 16:13:34,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 174 transitions, 724 flow [2024-11-13 16:13:34,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:13:34,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 16:13:34,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 454 transitions. [2024-11-13 16:13:34,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6485714285714286 [2024-11-13 16:13:34,910 INFO L175 Difference]: Start difference. First operand has 95 places, 106 transitions, 282 flow. Second operand 5 states and 454 transitions. [2024-11-13 16:13:34,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 174 transitions, 724 flow [2024-11-13 16:13:34,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 174 transitions, 708 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-13 16:13:34,929 INFO L231 Difference]: Finished difference. Result has 91 places, 99 transitions, 258 flow [2024-11-13 16:13:34,929 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=91, PETRI_TRANSITIONS=99} [2024-11-13 16:13:34,930 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -14 predicate places. [2024-11-13 16:13:34,930 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 99 transitions, 258 flow [2024-11-13 16:13:34,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 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) [2024-11-13 16:13:34,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:13:34,931 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:13:34,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 16:13:34,931 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-13 16:13:34,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:13:34,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1123735751, now seen corresponding path program 1 times [2024-11-13 16:13:34,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:13:34,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368440195] [2024-11-13 16:13:34,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:34,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:13:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:35,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:13:35,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:13:35,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368440195] [2024-11-13 16:13:35,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368440195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:13:35,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:13:35,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:13:35,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871456196] [2024-11-13 16:13:35,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:13:35,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:13:35,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:13:35,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:13:35,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:13:35,182 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 140 [2024-11-13 16:13:35,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 99 transitions, 258 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) [2024-11-13 16:13:35,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:13:35,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 140 [2024-11-13 16:13:35,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:13:36,037 INFO L124 PetriNetUnfolderBase]: 2419/5138 cut-off events. [2024-11-13 16:13:36,037 INFO L125 PetriNetUnfolderBase]: For 782/805 co-relation queries the response was YES. [2024-11-13 16:13:36,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9803 conditions, 5138 events. 2419/5138 cut-off events. For 782/805 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 40535 event pairs, 1228 based on Foata normal form. 22/4183 useless extension candidates. Maximal degree in co-relation 9383. Up to 2199 conditions per place. [2024-11-13 16:13:36,089 INFO L140 encePairwiseOnDemand]: 138/140 looper letters, 74 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2024-11-13 16:13:36,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 125 transitions, 480 flow [2024-11-13 16:13:36,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:13:36,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:13:36,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2024-11-13 16:13:36,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-11-13 16:13:36,094 INFO L175 Difference]: Start difference. First operand has 91 places, 99 transitions, 258 flow. Second operand 3 states and 276 transitions. [2024-11-13 16:13:36,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 125 transitions, 480 flow [2024-11-13 16:13:36,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 125 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 16:13:36,111 INFO L231 Difference]: Finished difference. Result has 91 places, 98 transitions, 256 flow [2024-11-13 16:13:36,114 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=91, PETRI_TRANSITIONS=98} [2024-11-13 16:13:36,115 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -14 predicate places. [2024-11-13 16:13:36,116 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 98 transitions, 256 flow [2024-11-13 16:13:36,116 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) [2024-11-13 16:13:36,116 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:13:36,116 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:13:36,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 16:13:36,116 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-13 16:13:36,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:13:36,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1123735752, now seen corresponding path program 1 times [2024-11-13 16:13:36,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:13:36,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230070930] [2024-11-13 16:13:36,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:36,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:13:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:36,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:13:36,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:13:36,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230070930] [2024-11-13 16:13:36,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230070930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:13:36,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:13:36,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:13:36,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694537052] [2024-11-13 16:13:36,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:13:36,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:13:36,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:13:36,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:13:36,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:13:36,427 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 140 [2024-11-13 16:13:36,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 98 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2024-11-13 16:13:36,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:13:36,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 140 [2024-11-13 16:13:36,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:13:37,262 INFO L124 PetriNetUnfolderBase]: 1987/4562 cut-off events. [2024-11-13 16:13:37,262 INFO L125 PetriNetUnfolderBase]: For 1032/1055 co-relation queries the response was YES. [2024-11-13 16:13:37,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8673 conditions, 4562 events. 1987/4562 cut-off events. For 1032/1055 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 37566 event pairs, 1263 based on Foata normal form. 256/3927 useless extension candidates. Maximal degree in co-relation 8304. Up to 2401 conditions per place. [2024-11-13 16:13:37,303 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 71 selfloop transitions, 5 changer transitions 0/125 dead transitions. [2024-11-13 16:13:37,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 125 transitions, 476 flow [2024-11-13 16:13:37,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:13:37,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:13:37,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2024-11-13 16:13:37,306 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2024-11-13 16:13:37,306 INFO L175 Difference]: Start difference. First operand has 91 places, 98 transitions, 256 flow. Second operand 3 states and 279 transitions. [2024-11-13 16:13:37,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 125 transitions, 476 flow [2024-11-13 16:13:37,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 125 transitions, 474 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 16:13:37,372 INFO L231 Difference]: Finished difference. Result has 93 places, 101 transitions, 291 flow [2024-11-13 16:13:37,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=291, PETRI_PLACES=93, PETRI_TRANSITIONS=101} [2024-11-13 16:13:37,375 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -12 predicate places. [2024-11-13 16:13:37,376 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 101 transitions, 291 flow [2024-11-13 16:13:37,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2024-11-13 16:13:37,376 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:13:37,376 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:13:37,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 16:13:37,377 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting counter_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-13 16:13:37,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:13:37,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1749490280, now seen corresponding path program 1 times [2024-11-13 16:13:37,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:13:37,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031078873] [2024-11-13 16:13:37,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:37,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:13:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:37,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:13:37,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:13:37,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031078873] [2024-11-13 16:13:37,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031078873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:13:37,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:13:37,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:13:37,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293738594] [2024-11-13 16:13:37,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:13:37,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:13:37,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:13:37,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:13:37,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:13:37,496 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 140 [2024-11-13 16:13:37,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 101 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2024-11-13 16:13:37,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:13:37,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 140 [2024-11-13 16:13:37,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:13:38,086 INFO L124 PetriNetUnfolderBase]: 1478/3555 cut-off events. [2024-11-13 16:13:38,086 INFO L125 PetriNetUnfolderBase]: For 1869/1869 co-relation queries the response was YES. [2024-11-13 16:13:38,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7277 conditions, 3555 events. 1478/3555 cut-off events. For 1869/1869 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 27860 event pairs, 1180 based on Foata normal form. 0/2898 useless extension candidates. Maximal degree in co-relation 6873. Up to 2227 conditions per place. [2024-11-13 16:13:38,109 INFO L140 encePairwiseOnDemand]: 137/140 looper letters, 72 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2024-11-13 16:13:38,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 124 transitions, 517 flow [2024-11-13 16:13:38,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:13:38,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:13:38,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2024-11-13 16:13:38,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-11-13 16:13:38,115 INFO L175 Difference]: Start difference. First operand has 93 places, 101 transitions, 291 flow. Second operand 3 states and 276 transitions. [2024-11-13 16:13:38,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 124 transitions, 517 flow [2024-11-13 16:13:38,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 124 transitions, 496 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-13 16:13:38,127 INFO L231 Difference]: Finished difference. Result has 95 places, 102 transitions, 290 flow [2024-11-13 16:13:38,127 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=95, PETRI_TRANSITIONS=102} [2024-11-13 16:13:38,129 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -10 predicate places. [2024-11-13 16:13:38,129 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 102 transitions, 290 flow [2024-11-13 16:13:38,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2024-11-13 16:13:38,130 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:13:38,130 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:13:38,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 16:13:38,131 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-13 16:13:38,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:13:38,132 INFO L85 PathProgramCache]: Analyzing trace with hash 2091799489, now seen corresponding path program 1 times [2024-11-13 16:13:38,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:13:38,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659259907] [2024-11-13 16:13:38,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:38,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:13:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:38,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:13:38,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:13:38,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659259907] [2024-11-13 16:13:38,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659259907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:13:38,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:13:38,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:13:38,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303665815] [2024-11-13 16:13:38,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:13:38,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:13:38,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:13:38,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:13:38,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:13:38,337 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 140 [2024-11-13 16:13:38,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 102 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2024-11-13 16:13:38,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:13:38,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 140 [2024-11-13 16:13:38,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:13:38,953 INFO L124 PetriNetUnfolderBase]: 1620/3781 cut-off events. [2024-11-13 16:13:38,954 INFO L125 PetriNetUnfolderBase]: For 1224/1267 co-relation queries the response was YES. [2024-11-13 16:13:38,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7947 conditions, 3781 events. 1620/3781 cut-off events. For 1224/1267 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 29529 event pairs, 1212 based on Foata normal form. 43/3185 useless extension candidates. Maximal degree in co-relation 7656. Up to 2206 conditions per place. [2024-11-13 16:13:38,980 INFO L140 encePairwiseOnDemand]: 138/140 looper letters, 70 selfloop transitions, 3 changer transitions 0/121 dead transitions. [2024-11-13 16:13:38,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 121 transitions, 503 flow [2024-11-13 16:13:38,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:13:38,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:13:38,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2024-11-13 16:13:38,983 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-11-13 16:13:38,983 INFO L175 Difference]: Start difference. First operand has 95 places, 102 transitions, 290 flow. Second operand 3 states and 267 transitions. [2024-11-13 16:13:38,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 121 transitions, 503 flow [2024-11-13 16:13:38,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 121 transitions, 496 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-13 16:13:38,991 INFO L231 Difference]: Finished difference. Result has 95 places, 101 transitions, 290 flow [2024-11-13 16:13:38,992 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=95, PETRI_TRANSITIONS=101} [2024-11-13 16:13:38,995 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -10 predicate places. [2024-11-13 16:13:38,995 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 101 transitions, 290 flow [2024-11-13 16:13:38,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2024-11-13 16:13:38,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:13:38,996 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:13:38,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 16:13:38,996 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-13 16:13:38,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:13:38,996 INFO L85 PathProgramCache]: Analyzing trace with hash 2091799490, now seen corresponding path program 1 times [2024-11-13 16:13:38,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:13:38,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144412926] [2024-11-13 16:13:38,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:38,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:13:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:39,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:13:39,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:13:39,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144412926] [2024-11-13 16:13:39,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144412926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:13:39,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:13:39,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:13:39,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553871883] [2024-11-13 16:13:39,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:13:39,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:13:39,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:13:39,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:13:39,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:13:39,258 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 140 [2024-11-13 16:13:39,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 101 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2024-11-13 16:13:39,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:13:39,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 140 [2024-11-13 16:13:39,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:13:39,938 INFO L124 PetriNetUnfolderBase]: 1641/3803 cut-off events. [2024-11-13 16:13:39,939 INFO L125 PetriNetUnfolderBase]: For 1311/1356 co-relation queries the response was YES. [2024-11-13 16:13:39,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8023 conditions, 3803 events. 1641/3803 cut-off events. For 1311/1356 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 29642 event pairs, 1241 based on Foata normal form. 45/3175 useless extension candidates. Maximal degree in co-relation 7709. Up to 2342 conditions per place. [2024-11-13 16:13:39,971 INFO L140 encePairwiseOnDemand]: 134/140 looper letters, 67 selfloop transitions, 8 changer transitions 0/122 dead transitions. [2024-11-13 16:13:39,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 122 transitions, 508 flow [2024-11-13 16:13:39,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:13:39,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:13:39,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2024-11-13 16:13:39,975 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6404761904761904 [2024-11-13 16:13:39,975 INFO L175 Difference]: Start difference. First operand has 95 places, 101 transitions, 290 flow. Second operand 3 states and 269 transitions. [2024-11-13 16:13:39,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 122 transitions, 508 flow [2024-11-13 16:13:39,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 122 transitions, 505 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 16:13:39,986 INFO L231 Difference]: Finished difference. Result has 98 places, 106 transitions, 356 flow [2024-11-13 16:13:39,986 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=356, PETRI_PLACES=98, PETRI_TRANSITIONS=106} [2024-11-13 16:13:39,987 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -7 predicate places. [2024-11-13 16:13:39,987 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 106 transitions, 356 flow [2024-11-13 16:13:39,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2024-11-13 16:13:39,988 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:13:39,988 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:13:39,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 16:13:39,989 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting counter_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-13 16:13:39,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:13:39,989 INFO L85 PathProgramCache]: Analyzing trace with hash 722327095, now seen corresponding path program 1 times [2024-11-13 16:13:39,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:13:39,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22370421] [2024-11-13 16:13:39,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:39,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:13:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:40,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:13:40,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:13:40,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22370421] [2024-11-13 16:13:40,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22370421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:13:40,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930928651] [2024-11-13 16:13:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:40,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:13:40,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31cb1278-55a2-44ae-ab74-459a998bace4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:13:40,128 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31cb1278-55a2-44ae-ab74-459a998bace4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:13:40,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31cb1278-55a2-44ae-ab74-459a998bace4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:13:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:40,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:13:40,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:13:40,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:13:40,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:13:40,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:13:40,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930928651] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:13:40,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:13:40,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-13 16:13:40,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140674854] [2024-11-13 16:13:40,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:13:40,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:13:40,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:13:40,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:13:40,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:13:40,445 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 140 [2024-11-13 16:13:40,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 106 transitions, 356 flow. Second operand has 7 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 states have internal predecessors, (523), 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) [2024-11-13 16:13:40,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:13:40,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 140 [2024-11-13 16:13:40,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:13:41,274 INFO L124 PetriNetUnfolderBase]: 1712/3991 cut-off events. [2024-11-13 16:13:41,275 INFO L125 PetriNetUnfolderBase]: For 2054/2054 co-relation queries the response was YES. [2024-11-13 16:13:41,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9011 conditions, 3991 events. 1712/3991 cut-off events. For 2054/2054 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 30956 event pairs, 1201 based on Foata normal form. 0/3355 useless extension candidates. Maximal degree in co-relation 8648. Up to 2277 conditions per place. [2024-11-13 16:13:41,302 INFO L140 encePairwiseOnDemand]: 137/140 looper letters, 146 selfloop transitions, 5 changer transitions 0/201 dead transitions. [2024-11-13 16:13:41,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 201 transitions, 1034 flow [2024-11-13 16:13:41,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:13:41,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 16:13:41,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 554 transitions. [2024-11-13 16:13:41,306 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6595238095238095 [2024-11-13 16:13:41,306 INFO L175 Difference]: Start difference. First operand has 98 places, 106 transitions, 356 flow. Second operand 6 states and 554 transitions. [2024-11-13 16:13:41,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 201 transitions, 1034 flow [2024-11-13 16:13:41,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 201 transitions, 978 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-13 16:13:41,324 INFO L231 Difference]: Finished difference. Result has 104 places, 109 transitions, 368 flow [2024-11-13 16:13:41,324 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=368, PETRI_PLACES=104, PETRI_TRANSITIONS=109} [2024-11-13 16:13:41,325 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -1 predicate places. [2024-11-13 16:13:41,325 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 109 transitions, 368 flow [2024-11-13 16:13:41,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 states have internal predecessors, (523), 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) [2024-11-13 16:13:41,326 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:13:41,326 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:13:41,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31cb1278-55a2-44ae-ab74-459a998bace4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 16:13:41,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31cb1278-55a2-44ae-ab74-459a998bace4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:13:41,528 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-13 16:13:41,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:13:41,529 INFO L85 PathProgramCache]: Analyzing trace with hash -924148924, now seen corresponding path program 1 times [2024-11-13 16:13:41,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:13:41,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974985529] [2024-11-13 16:13:41,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:41,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:13:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:41,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:13:41,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:13:41,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974985529] [2024-11-13 16:13:41,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974985529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:13:41,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:13:41,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:13:41,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769612580] [2024-11-13 16:13:41,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:13:41,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:13:41,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:13:41,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:13:41,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:13:41,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 140 [2024-11-13 16:13:41,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 109 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2024-11-13 16:13:41,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:13:41,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 140 [2024-11-13 16:13:41,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:13:42,435 INFO L124 PetriNetUnfolderBase]: 2886/6182 cut-off events. [2024-11-13 16:13:42,436 INFO L125 PetriNetUnfolderBase]: For 3144/3233 co-relation queries the response was YES. [2024-11-13 16:13:42,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13834 conditions, 6182 events. 2886/6182 cut-off events. For 3144/3233 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 47967 event pairs, 1264 based on Foata normal form. 88/5164 useless extension candidates. Maximal degree in co-relation 13578. Up to 2769 conditions per place. [2024-11-13 16:13:42,480 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 91 selfloop transitions, 3 changer transitions 2/130 dead transitions. [2024-11-13 16:13:42,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 130 transitions, 662 flow [2024-11-13 16:13:42,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:13:42,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:13:42,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2024-11-13 16:13:42,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-11-13 16:13:42,483 INFO L175 Difference]: Start difference. First operand has 104 places, 109 transitions, 368 flow. Second operand 3 states and 259 transitions. [2024-11-13 16:13:42,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 130 transitions, 662 flow [2024-11-13 16:13:42,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 130 transitions, 635 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-13 16:13:42,496 INFO L231 Difference]: Finished difference. Result has 94 places, 93 transitions, 317 flow [2024-11-13 16:13:42,497 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=94, PETRI_TRANSITIONS=93} [2024-11-13 16:13:42,497 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -11 predicate places. [2024-11-13 16:13:42,498 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 93 transitions, 317 flow [2024-11-13 16:13:42,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2024-11-13 16:13:42,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:13:42,498 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:13:42,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 16:13:42,499 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting counter_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-13 16:13:42,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:13:42,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1107236392, now seen corresponding path program 2 times [2024-11-13 16:13:42,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:13:42,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279114639] [2024-11-13 16:13:42,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:42,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:13:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:42,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 16:13:42,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:13:42,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279114639] [2024-11-13 16:13:42,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279114639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:13:42,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:13:42,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:13:42,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484805488] [2024-11-13 16:13:42,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:13:42,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:13:42,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:13:42,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:13:42,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:13:42,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2024-11-13 16:13:42,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 93 transitions, 317 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2024-11-13 16:13:42,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:13:42,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2024-11-13 16:13:42,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:13:43,248 INFO L124 PetriNetUnfolderBase]: 1638/3204 cut-off events. [2024-11-13 16:13:43,248 INFO L125 PetriNetUnfolderBase]: For 2023/2023 co-relation queries the response was YES. [2024-11-13 16:13:43,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8223 conditions, 3204 events. 1638/3204 cut-off events. For 2023/2023 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 21348 event pairs, 503 based on Foata normal form. 46/2944 useless extension candidates. Maximal degree in co-relation 8033. Up to 1580 conditions per place. [2024-11-13 16:13:43,267 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 84 selfloop transitions, 4 changer transitions 10/127 dead transitions. [2024-11-13 16:13:43,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 127 transitions, 614 flow [2024-11-13 16:13:43,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:13:43,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:13:43,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 358 transitions. [2024-11-13 16:13:43,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6392857142857142 [2024-11-13 16:13:43,270 INFO L175 Difference]: Start difference. First operand has 94 places, 93 transitions, 317 flow. Second operand 4 states and 358 transitions. [2024-11-13 16:13:43,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 127 transitions, 614 flow [2024-11-13 16:13:43,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 127 transitions, 596 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-13 16:13:43,282 INFO L231 Difference]: Finished difference. Result has 84 places, 72 transitions, 226 flow [2024-11-13 16:13:43,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=84, PETRI_TRANSITIONS=72} [2024-11-13 16:13:43,285 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -21 predicate places. [2024-11-13 16:13:43,285 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 72 transitions, 226 flow [2024-11-13 16:13:43,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2024-11-13 16:13:43,286 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:13:43,286 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:13:43,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 16:13:43,286 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-13 16:13:43,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:13:43,287 INFO L85 PathProgramCache]: Analyzing trace with hash -131282550, now seen corresponding path program 1 times [2024-11-13 16:13:43,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:13:43,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766737691] [2024-11-13 16:13:43,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:43,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:13:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:43,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:13:43,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:13:43,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766737691] [2024-11-13 16:13:43,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766737691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:13:43,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:13:43,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:13:43,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423384053] [2024-11-13 16:13:43,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:13:43,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:13:43,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:13:43,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:13:43,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:13:43,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2024-11-13 16:13:43,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 72 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2024-11-13 16:13:43,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:13:43,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2024-11-13 16:13:43,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:13:44,568 INFO L124 PetriNetUnfolderBase]: 2266/4394 cut-off events. [2024-11-13 16:13:44,569 INFO L125 PetriNetUnfolderBase]: For 2200/2335 co-relation queries the response was YES. [2024-11-13 16:13:44,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10249 conditions, 4394 events. 2266/4394 cut-off events. For 2200/2335 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 30296 event pairs, 1125 based on Foata normal form. 172/4069 useless extension candidates. Maximal degree in co-relation 8314. Up to 1964 conditions per place. [2024-11-13 16:13:44,602 INFO L140 encePairwiseOnDemand]: 138/140 looper letters, 65 selfloop transitions, 3 changer transitions 1/97 dead transitions. [2024-11-13 16:13:44,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 97 transitions, 443 flow [2024-11-13 16:13:44,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:13:44,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:13:44,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2024-11-13 16:13:44,605 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6261904761904762 [2024-11-13 16:13:44,605 INFO L175 Difference]: Start difference. First operand has 84 places, 72 transitions, 226 flow. Second operand 3 states and 263 transitions. [2024-11-13 16:13:44,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 97 transitions, 443 flow [2024-11-13 16:13:44,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 97 transitions, 424 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 16:13:44,617 INFO L231 Difference]: Finished difference. Result has 77 places, 70 transitions, 209 flow [2024-11-13 16:13:44,617 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2024-11-13 16:13:44,618 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -28 predicate places. [2024-11-13 16:13:44,618 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 209 flow [2024-11-13 16:13:44,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2024-11-13 16:13:44,619 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:13:44,619 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:13:44,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 16:13:44,619 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-13 16:13:44,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:13:44,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1413357081, now seen corresponding path program 1 times [2024-11-13 16:13:44,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:13:44,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954059017] [2024-11-13 16:13:44,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:44,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:13:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:44,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:13:44,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:13:44,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954059017] [2024-11-13 16:13:44,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954059017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:13:44,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:13:44,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:13:44,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22918566] [2024-11-13 16:13:44,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:13:44,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:13:44,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:13:44,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:13:44,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:13:45,124 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2024-11-13 16:13:45,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2024-11-13 16:13:45,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:13:45,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2024-11-13 16:13:45,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:13:45,584 INFO L124 PetriNetUnfolderBase]: 1470/3104 cut-off events. [2024-11-13 16:13:45,585 INFO L125 PetriNetUnfolderBase]: For 1504/1576 co-relation queries the response was YES. [2024-11-13 16:13:45,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7352 conditions, 3104 events. 1470/3104 cut-off events. For 1504/1576 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 20998 event pairs, 1084 based on Foata normal form. 72/2806 useless extension candidates. Maximal degree in co-relation 5977. Up to 1985 conditions per place. [2024-11-13 16:13:45,606 INFO L140 encePairwiseOnDemand]: 138/140 looper letters, 38 selfloop transitions, 0 changer transitions 24/88 dead transitions. [2024-11-13 16:13:45,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 88 transitions, 393 flow [2024-11-13 16:13:45,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:13:45,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:13:45,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 255 transitions. [2024-11-13 16:13:45,609 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-11-13 16:13:45,609 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 209 flow. Second operand 3 states and 255 transitions. [2024-11-13 16:13:45,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 88 transitions, 393 flow [2024-11-13 16:13:45,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 88 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 16:13:45,616 INFO L231 Difference]: Finished difference. Result has 77 places, 64 transitions, 178 flow [2024-11-13 16:13:45,616 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=77, PETRI_TRANSITIONS=64} [2024-11-13 16:13:45,616 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -28 predicate places. [2024-11-13 16:13:45,617 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 64 transitions, 178 flow [2024-11-13 16:13:45,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2024-11-13 16:13:45,617 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:13:45,617 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:13:45,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 16:13:45,619 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-13 16:13:45,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:13:45,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1312279832, now seen corresponding path program 1 times [2024-11-13 16:13:45,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:13:45,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19028448] [2024-11-13 16:13:45,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:45,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:13:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:45,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:13:45,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:13:45,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19028448] [2024-11-13 16:13:45,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19028448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:13:45,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:13:45,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:13:45,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502675329] [2024-11-13 16:13:45,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:13:45,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:13:45,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:13:45,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:13:45,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:13:45,774 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2024-11-13 16:13:45,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 64 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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) [2024-11-13 16:13:45,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:13:45,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2024-11-13 16:13:45,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:13:46,244 INFO L124 PetriNetUnfolderBase]: 1701/2927 cut-off events. [2024-11-13 16:13:46,244 INFO L125 PetriNetUnfolderBase]: For 1022/1102 co-relation queries the response was YES. [2024-11-13 16:13:46,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7505 conditions, 2927 events. 1701/2927 cut-off events. For 1022/1102 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 16332 event pairs, 689 based on Foata normal form. 80/2799 useless extension candidates. Maximal degree in co-relation 7494. Up to 1358 conditions per place. [2024-11-13 16:13:46,254 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 0 selfloop transitions, 0 changer transitions 99/99 dead transitions. [2024-11-13 16:13:46,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 99 transitions, 464 flow [2024-11-13 16:13:46,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:13:46,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:13:46,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 341 transitions. [2024-11-13 16:13:46,257 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6089285714285714 [2024-11-13 16:13:46,257 INFO L175 Difference]: Start difference. First operand has 77 places, 64 transitions, 178 flow. Second operand 4 states and 341 transitions. [2024-11-13 16:13:46,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 99 transitions, 464 flow [2024-11-13 16:13:46,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 99 transitions, 456 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 16:13:46,262 INFO L231 Difference]: Finished difference. Result has 67 places, 0 transitions, 0 flow [2024-11-13 16:13:46,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=67, PETRI_TRANSITIONS=0} [2024-11-13 16:13:46,264 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -38 predicate places. [2024-11-13 16:13:46,264 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 0 transitions, 0 flow [2024-11-13 16:13:46,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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) [2024-11-13 16:13:46,268 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 27 remaining) [2024-11-13 16:13:46,268 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 27 remaining) [2024-11-13 16:13:46,268 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 27 remaining) [2024-11-13 16:13:46,268 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 27 remaining) [2024-11-13 16:13:46,269 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 27 remaining) [2024-11-13 16:13:46,269 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 27 remaining) [2024-11-13 16:13:46,269 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 27 remaining) [2024-11-13 16:13:46,269 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 27 remaining) [2024-11-13 16:13:46,269 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (18 of 27 remaining) [2024-11-13 16:13:46,269 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 27 remaining) [2024-11-13 16:13:46,269 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 27 remaining) [2024-11-13 16:13:46,269 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 27 remaining) [2024-11-13 16:13:46,269 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 27 remaining) [2024-11-13 16:13:46,269 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 27 remaining) [2024-11-13 16:13:46,269 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 27 remaining) [2024-11-13 16:13:46,269 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 27 remaining) [2024-11-13 16:13:46,269 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 27 remaining) [2024-11-13 16:13:46,270 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 27 remaining) [2024-11-13 16:13:46,270 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 27 remaining) [2024-11-13 16:13:46,270 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 27 remaining) [2024-11-13 16:13:46,270 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 27 remaining) [2024-11-13 16:13:46,270 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 27 remaining) [2024-11-13 16:13:46,270 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 27 remaining) [2024-11-13 16:13:46,270 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 27 remaining) [2024-11-13 16:13:46,270 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 27 remaining) [2024-11-13 16:13:46,270 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 27 remaining) [2024-11-13 16:13:46,270 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 27 remaining) [2024-11-13 16:13:46,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 16:13:46,271 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:13:46,280 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 16:13:46,280 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 16:13:46,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 04:13:46 BasicIcfg [2024-11-13 16:13:46,289 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 16:13:46,290 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 16:13:46,290 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 16:13:46,291 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 16:13:46,292 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:13:29" (3/4) ... [2024-11-13 16:13:46,294 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 16:13:46,297 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure monitor_thread [2024-11-13 16:13:46,298 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure counter_thread [2024-11-13 16:13:46,303 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 66 nodes and edges [2024-11-13 16:13:46,303 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-13 16:13:46,304 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-13 16:13:46,304 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-13 16:13:46,409 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31cb1278-55a2-44ae-ab74-459a998bace4/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 16:13:46,410 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31cb1278-55a2-44ae-ab74-459a998bace4/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 16:13:46,410 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 16:13:46,412 INFO L158 Benchmark]: Toolchain (without parser) took 20453.60ms. Allocated memory was 117.4MB in the beginning and 536.9MB in the end (delta: 419.4MB). Free memory was 89.0MB in the beginning and 430.1MB in the end (delta: -341.1MB). Peak memory consumption was 77.2MB. Max. memory is 16.1GB. [2024-11-13 16:13:46,413 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 83.9MB. Free memory is still 41.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:13:46,414 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1773.17ms. Allocated memory is still 117.4MB. Free memory was 89.0MB in the beginning and 77.2MB in the end (delta: 11.8MB). Peak memory consumption was 58.8MB. Max. memory is 16.1GB. [2024-11-13 16:13:46,415 INFO L158 Benchmark]: Boogie Procedure Inliner took 111.33ms. Allocated memory is still 117.4MB. Free memory was 77.2MB in the beginning and 74.2MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:13:46,415 INFO L158 Benchmark]: Boogie Preprocessor took 124.95ms. Allocated memory is still 117.4MB. Free memory was 74.2MB in the beginning and 70.3MB in the end (delta: 3.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 16:13:46,415 INFO L158 Benchmark]: RCFGBuilder took 1565.74ms. Allocated memory is still 117.4MB. Free memory was 69.6MB in the beginning and 71.8MB in the end (delta: -2.2MB). Peak memory consumption was 42.0MB. Max. memory is 16.1GB. [2024-11-13 16:13:46,417 INFO L158 Benchmark]: TraceAbstraction took 16742.51ms. Allocated memory was 117.4MB in the beginning and 536.9MB in the end (delta: 419.4MB). Free memory was 71.1MB in the beginning and 434.3MB in the end (delta: -363.3MB). Peak memory consumption was 309.2MB. Max. memory is 16.1GB. [2024-11-13 16:13:46,417 INFO L158 Benchmark]: Witness Printer took 120.09ms. Allocated memory is still 536.9MB. Free memory was 434.3MB in the beginning and 430.1MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:13:46,419 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 83.9MB. Free memory is still 41.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1773.17ms. Allocated memory is still 117.4MB. Free memory was 89.0MB in the beginning and 77.2MB in the end (delta: 11.8MB). Peak memory consumption was 58.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 111.33ms. Allocated memory is still 117.4MB. Free memory was 77.2MB in the beginning and 74.2MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 124.95ms. Allocated memory is still 117.4MB. Free memory was 74.2MB in the beginning and 70.3MB in the end (delta: 3.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1565.74ms. Allocated memory is still 117.4MB. Free memory was 69.6MB in the beginning and 71.8MB in the end (delta: -2.2MB). Peak memory consumption was 42.0MB. Max. memory is 16.1GB. * TraceAbstraction took 16742.51ms. Allocated memory was 117.4MB in the beginning and 536.9MB in the end (delta: 419.4MB). Free memory was 71.1MB in the beginning and 434.3MB in the end (delta: -363.3MB). Peak memory consumption was 309.2MB. Max. memory is 16.1GB. * Witness Printer took 120.09ms. Allocated memory is still 536.9MB. Free memory was 434.3MB in the beginning and 430.1MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1835]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 159 locations, 27 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 16.5s, OverallIterations: 15, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1060 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 711 mSDsluCounter, 88 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2151 IncrementalHoareTripleChecker+Invalid, 2190 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 64 mSDtfsCounter, 2151 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=368occurred in iteration=10, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 245 NumberOfCodeBlocks, 245 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 246 ConstructedInterpolants, 0 QuantifiedInterpolants, 554 SizeOfPredicates, 0 NumberOfNonLiveVariables, 116 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 17 InterpolantComputations, 14 PerfectInterpolantSequences, 10/13 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-13 16:13:46,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31cb1278-55a2-44ae-ab74-459a998bace4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE