./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-lit/sssc12_variant.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d78b-6268-46ce-80ef-6dbaa8709c33/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d78b-6268-46ce-80ef-6dbaa8709c33/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d78b-6268-46ce-80ef-6dbaa8709c33/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d78b-6268-46ce-80ef-6dbaa8709c33/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-lit/sssc12_variant.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d78b-6268-46ce-80ef-6dbaa8709c33/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d78b-6268-46ce-80ef-6dbaa8709c33/bin/uautomizer-verify-jihMAELWvX --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 0ff08c0361e0fdb1af5d85b333c023f31932563eeba591605f3b3b9ddd16afc8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:51:51,534 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:51:51,660 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d78b-6268-46ce-80ef-6dbaa8709c33/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 17:51:51,667 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:51:51,668 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:51:51,718 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:51:51,722 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:51:51,722 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:51:51,723 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:51:51,725 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:51:51,725 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:51:51,727 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:51:51,728 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:51:51,731 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:51:51,731 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:51:51,732 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:51:51,733 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:51:51,733 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:51:51,734 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:51:51,734 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:51:51,734 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 17:51:51,739 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 17:51:51,740 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 17:51:51,740 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:51:51,741 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 17:51:51,742 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:51:51,742 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:51:51,743 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:51:51,743 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:51:51,744 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:51:51,744 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:51:51,744 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:51:51,745 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:51:51,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:51:51,746 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:51:51,749 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:51:51,749 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:51:51,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:51:51,751 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:51:51,751 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:51:51,752 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:51:51,752 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:51:51,753 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d78b-6268-46ce-80ef-6dbaa8709c33/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d78b-6268-46ce-80ef-6dbaa8709c33/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ff08c0361e0fdb1af5d85b333c023f31932563eeba591605f3b3b9ddd16afc8 [2024-11-08 17:51:52,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:51:52,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:51:52,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:51:52,143 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:51:52,144 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:51:52,145 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d78b-6268-46ce-80ef-6dbaa8709c33/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/pthread-lit/sssc12_variant.i Unable to find full path for "g++" [2024-11-08 17:51:54,390 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:51:54,665 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:51:54,666 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d78b-6268-46ce-80ef-6dbaa8709c33/sv-benchmarks/c/pthread-lit/sssc12_variant.i [2024-11-08 17:51:54,683 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d78b-6268-46ce-80ef-6dbaa8709c33/bin/uautomizer-verify-jihMAELWvX/data/e896c485c/e3ad2ec7b8eb455aa6b8cd621ee5680f/FLAG862c366e6 [2024-11-08 17:51:54,961 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d78b-6268-46ce-80ef-6dbaa8709c33/bin/uautomizer-verify-jihMAELWvX/data/e896c485c/e3ad2ec7b8eb455aa6b8cd621ee5680f [2024-11-08 17:51:54,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:51:54,967 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:51:54,972 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:51:54,972 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:51:54,981 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:51:54,982 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:51:54" (1/1) ... [2024-11-08 17:51:54,983 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e934b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:54, skipping insertion in model container [2024-11-08 17:51:54,986 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:51:54" (1/1) ... [2024-11-08 17:51:55,068 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:51:55,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:51:55,880 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:51:55,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:51:56,033 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:51:56,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:56 WrapperNode [2024-11-08 17:51:56,034 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:51:56,035 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:51:56,035 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:51:56,036 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:51:56,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:56" (1/1) ... [2024-11-08 17:51:56,082 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:56" (1/1) ... [2024-11-08 17:51:56,130 INFO L138 Inliner]: procedures = 272, calls = 22, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 77 [2024-11-08 17:51:56,132 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:51:56,133 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:51:56,133 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:51:56,133 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:51:56,148 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:56" (1/1) ... [2024-11-08 17:51:56,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:56" (1/1) ... [2024-11-08 17:51:56,153 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:56" (1/1) ... [2024-11-08 17:51:56,170 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 5, 3]. 50 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 2 writes are split as follows [0, 0, 2]. [2024-11-08 17:51:56,171 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:56" (1/1) ... [2024-11-08 17:51:56,171 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:56" (1/1) ... [2024-11-08 17:51:56,179 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:56" (1/1) ... [2024-11-08 17:51:56,183 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:56" (1/1) ... [2024-11-08 17:51:56,185 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:56" (1/1) ... [2024-11-08 17:51:56,187 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:56" (1/1) ... [2024-11-08 17:51:56,190 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:51:56,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:51:56,192 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:51:56,192 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:51:56,193 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:56" (1/1) ... [2024-11-08 17:51:56,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:51:56,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d78b-6268-46ce-80ef-6dbaa8709c33/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:51:56,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d78b-6268-46ce-80ef-6dbaa8709c33/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:51:56,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1d78b-6268-46ce-80ef-6dbaa8709c33/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:51:56,285 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2024-11-08 17:51:56,286 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2024-11-08 17:51:56,286 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-08 17:51:56,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:51:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:51:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 17:51:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:51:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:51:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 17:51:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-08 17:51:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:51:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:51:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:51:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:51:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 17:51:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:51:56,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:51:56,295 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 17:51:56,496 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:51:56,499 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:51:56,765 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:51:56,765 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:51:56,970 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:51:56,971 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 17:51:56,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:51:56 BoogieIcfgContainer [2024-11-08 17:51:56,971 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:51:56,974 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:51:56,974 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:51:56,979 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:51:56,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:51:54" (1/3) ... [2024-11-08 17:51:56,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ff155b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:51:56, skipping insertion in model container [2024-11-08 17:51:56,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:56" (2/3) ... [2024-11-08 17:51:56,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ff155b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:51:56, skipping insertion in model container [2024-11-08 17:51:56,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:51:56" (3/3) ... [2024-11-08 17:51:56,983 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12_variant.i [2024-11-08 17:51:57,004 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:51:57,004 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-08 17:51:57,004 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:51:57,110 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 17:51:57,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 35 transitions, 74 flow [2024-11-08 17:51:57,235 INFO L124 PetriNetUnfolderBase]: 4/39 cut-off events. [2024-11-08 17:51:57,239 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:51:57,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 39 events. 4/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2024-11-08 17:51:57,246 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 35 transitions, 74 flow [2024-11-08 17:51:57,254 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 35 transitions, 74 flow [2024-11-08 17:51:57,274 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:51:57,284 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;@580c6b33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:51:57,284 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-08 17:51:57,293 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:51:57,297 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-08 17:51:57,297 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:51:57,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:51:57,298 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-08 17:51:57,299 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-08 17:51:57,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:57,307 INFO L85 PathProgramCache]: Analyzing trace with hash 265316, now seen corresponding path program 1 times [2024-11-08 17:51:57,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:57,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113048303] [2024-11-08 17:51:57,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:57,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:57,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:57,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:57,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113048303] [2024-11-08 17:51:57,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113048303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:51:57,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:51:57,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:51:57,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020676412] [2024-11-08 17:51:57,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:51:57,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 17:51:57,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:57,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 17:51:57,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:51:57,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2024-11-08 17:51:57,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 35 transitions, 74 flow. Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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) [2024-11-08 17:51:57,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:51:57,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2024-11-08 17:51:57,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:51:57,777 INFO L124 PetriNetUnfolderBase]: 20/93 cut-off events. [2024-11-08 17:51:57,777 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:51:57,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 93 events. 20/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 294 event pairs, 14 based on Foata normal form. 6/78 useless extension candidates. Maximal degree in co-relation 128. Up to 44 conditions per place. [2024-11-08 17:51:57,782 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 12 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2024-11-08 17:51:57,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 86 flow [2024-11-08 17:51:57,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 17:51:57,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-08 17:51:57,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 51 transitions. [2024-11-08 17:51:57,806 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7285714285714285 [2024-11-08 17:51:57,808 INFO L175 Difference]: Start difference. First operand has 34 places, 35 transitions, 74 flow. Second operand 2 states and 51 transitions. [2024-11-08 17:51:57,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 86 flow [2024-11-08 17:51:57,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 86 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:51:57,817 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 62 flow [2024-11-08 17:51:57,820 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2024-11-08 17:51:57,827 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2024-11-08 17:51:57,828 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 62 flow [2024-11-08 17:51:57,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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) [2024-11-08 17:51:57,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:51:57,828 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-08 17:51:57,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:51:57,829 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-08 17:51:57,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:57,830 INFO L85 PathProgramCache]: Analyzing trace with hash -685510580, now seen corresponding path program 1 times [2024-11-08 17:51:57,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:57,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408907649] [2024-11-08 17:51:57,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:57,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 17:51:57,877 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 17:51:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 17:51:57,955 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 17:51:57,955 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 17:51:57,957 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-11-08 17:51:57,960 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (14 of 16 remaining) [2024-11-08 17:51:57,960 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 16 remaining) [2024-11-08 17:51:57,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 16 remaining) [2024-11-08 17:51:57,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 16 remaining) [2024-11-08 17:51:57,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 16 remaining) [2024-11-08 17:51:57,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 16 remaining) [2024-11-08 17:51:57,962 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 16 remaining) [2024-11-08 17:51:57,962 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (7 of 16 remaining) [2024-11-08 17:51:57,963 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 16 remaining) [2024-11-08 17:51:57,963 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 16 remaining) [2024-11-08 17:51:57,963 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 16 remaining) [2024-11-08 17:51:57,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 16 remaining) [2024-11-08 17:51:57,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 16 remaining) [2024-11-08 17:51:57,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 16 remaining) [2024-11-08 17:51:57,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 16 remaining) [2024-11-08 17:51:57,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:51:57,966 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-08 17:51:57,971 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 17:51:57,971 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-08 17:51:58,055 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 17:51:58,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 63 transitions, 136 flow [2024-11-08 17:51:58,099 INFO L124 PetriNetUnfolderBase]: 8/72 cut-off events. [2024-11-08 17:51:58,099 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 17:51:58,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 72 events. 8/72 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 184 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 59. Up to 3 conditions per place. [2024-11-08 17:51:58,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 63 transitions, 136 flow [2024-11-08 17:51:58,106 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 63 transitions, 136 flow [2024-11-08 17:51:58,110 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:51:58,111 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;@580c6b33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:51:58,111 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-08 17:51:58,117 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:51:58,117 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-08 17:51:58,117 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:51:58,117 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:51:58,117 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-08 17:51:58,121 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-08 17:51:58,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:58,122 INFO L85 PathProgramCache]: Analyzing trace with hash 327875, now seen corresponding path program 1 times [2024-11-08 17:51:58,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:58,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157615172] [2024-11-08 17:51:58,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:58,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:58,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:58,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:58,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157615172] [2024-11-08 17:51:58,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157615172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:51:58,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:51:58,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:51:58,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136050936] [2024-11-08 17:51:58,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:51:58,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 17:51:58,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:58,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 17:51:58,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:51:58,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 63 [2024-11-08 17:51:58,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 63 transitions, 136 flow. Second operand has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 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) [2024-11-08 17:51:58,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:51:58,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 63 [2024-11-08 17:51:58,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:51:58,591 INFO L124 PetriNetUnfolderBase]: 460/1428 cut-off events. [2024-11-08 17:51:58,592 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-08 17:51:58,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2109 conditions, 1428 events. 460/1428 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 10002 event pairs, 325 based on Foata normal form. 114/1149 useless extension candidates. Maximal degree in co-relation 1574. Up to 652 conditions per place. [2024-11-08 17:51:58,612 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 21 selfloop transitions, 0 changer transitions 0/54 dead transitions. [2024-11-08 17:51:58,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 54 transitions, 160 flow [2024-11-08 17:51:58,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 17:51:58,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-08 17:51:58,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 94 transitions. [2024-11-08 17:51:58,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.746031746031746 [2024-11-08 17:51:58,615 INFO L175 Difference]: Start difference. First operand has 60 places, 63 transitions, 136 flow. Second operand 2 states and 94 transitions. [2024-11-08 17:51:58,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 54 transitions, 160 flow [2024-11-08 17:51:58,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 160 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:51:58,619 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 118 flow [2024-11-08 17:51:58,619 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2024-11-08 17:51:58,620 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2024-11-08 17:51:58,621 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 118 flow [2024-11-08 17:51:58,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 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) [2024-11-08 17:51:58,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:51:58,622 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-08 17:51:58,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:51:58,622 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-08 17:51:58,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:58,623 INFO L85 PathProgramCache]: Analyzing trace with hash 881981602, now seen corresponding path program 1 times [2024-11-08 17:51:58,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:58,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064381806] [2024-11-08 17:51:58,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:58,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 17:51:58,657 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 17:51:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 17:51:58,682 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 17:51:58,683 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 17:51:58,683 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-11-08 17:51:58,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (21 of 23 remaining) [2024-11-08 17:51:58,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 23 remaining) [2024-11-08 17:51:58,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 23 remaining) [2024-11-08 17:51:58,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 23 remaining) [2024-11-08 17:51:58,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 23 remaining) [2024-11-08 17:51:58,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 23 remaining) [2024-11-08 17:51:58,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 23 remaining) [2024-11-08 17:51:58,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (14 of 23 remaining) [2024-11-08 17:51:58,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 23 remaining) [2024-11-08 17:51:58,687 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 23 remaining) [2024-11-08 17:51:58,687 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 23 remaining) [2024-11-08 17:51:58,687 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 23 remaining) [2024-11-08 17:51:58,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 23 remaining) [2024-11-08 17:51:58,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 23 remaining) [2024-11-08 17:51:58,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (7 of 23 remaining) [2024-11-08 17:51:58,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 23 remaining) [2024-11-08 17:51:58,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 23 remaining) [2024-11-08 17:51:58,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 23 remaining) [2024-11-08 17:51:58,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 23 remaining) [2024-11-08 17:51:58,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 23 remaining) [2024-11-08 17:51:58,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 23 remaining) [2024-11-08 17:51:58,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 23 remaining) [2024-11-08 17:51:58,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:51:58,691 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-08 17:51:58,692 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 17:51:58,693 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-08 17:51:58,750 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 17:51:58,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 91 transitions, 200 flow [2024-11-08 17:51:58,770 INFO L124 PetriNetUnfolderBase]: 12/105 cut-off events. [2024-11-08 17:51:58,770 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-08 17:51:58,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 105 events. 12/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 345 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 86. Up to 4 conditions per place. [2024-11-08 17:51:58,772 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 91 transitions, 200 flow [2024-11-08 17:51:58,774 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 91 transitions, 200 flow [2024-11-08 17:51:58,775 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:51:58,776 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;@580c6b33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:51:58,776 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-11-08 17:51:58,778 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:51:58,779 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-08 17:51:58,779 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:51:58,779 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:51:58,779 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-08 17:51:58,780 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-08 17:51:58,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:58,780 INFO L85 PathProgramCache]: Analyzing trace with hash 418238, now seen corresponding path program 1 times [2024-11-08 17:51:58,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:58,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102634324] [2024-11-08 17:51:58,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:58,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:58,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:58,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:58,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102634324] [2024-11-08 17:51:58,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102634324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:51:58,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:51:58,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:51:58,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760829068] [2024-11-08 17:51:58,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:51:58,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 17:51:58,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:58,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 17:51:58,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:51:58,835 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 91 [2024-11-08 17:51:58,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 91 transitions, 200 flow. Second operand has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 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) [2024-11-08 17:51:58,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:51:58,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 91 [2024-11-08 17:51:58,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:52:01,726 INFO L124 PetriNetUnfolderBase]: 6931/17820 cut-off events. [2024-11-08 17:52:01,726 INFO L125 PetriNetUnfolderBase]: For 508/508 co-relation queries the response was YES. [2024-11-08 17:52:01,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26680 conditions, 17820 events. 6931/17820 cut-off events. For 508/508 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 188440 event pairs, 4948 based on Foata normal form. 1572/14401 useless extension candidates. Maximal degree in co-relation 7857. Up to 8542 conditions per place. [2024-11-08 17:52:01,986 INFO L140 encePairwiseOnDemand]: 84/91 looper letters, 30 selfloop transitions, 0 changer transitions 0/79 dead transitions. [2024-11-08 17:52:01,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 79 transitions, 236 flow [2024-11-08 17:52:01,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 17:52:01,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-08 17:52:01,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 137 transitions. [2024-11-08 17:52:01,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7527472527472527 [2024-11-08 17:52:01,989 INFO L175 Difference]: Start difference. First operand has 86 places, 91 transitions, 200 flow. Second operand 2 states and 137 transitions. [2024-11-08 17:52:01,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 79 transitions, 236 flow [2024-11-08 17:52:01,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 234 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-08 17:52:01,993 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 174 flow [2024-11-08 17:52:01,993 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=174, PETRI_PLACES=81, PETRI_TRANSITIONS=79} [2024-11-08 17:52:01,994 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -5 predicate places. [2024-11-08 17:52:01,995 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 174 flow [2024-11-08 17:52:01,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 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) [2024-11-08 17:52:01,998 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:52:01,998 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:52:01,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:52:01,999 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-08 17:52:02,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:52:02,000 INFO L85 PathProgramCache]: Analyzing trace with hash 120982304, now seen corresponding path program 1 times [2024-11-08 17:52:02,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:52:02,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393818972] [2024-11-08 17:52:02,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:52:02,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:52:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:02,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:52:02,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:52:02,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393818972] [2024-11-08 17:52:02,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393818972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:52:02,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:52:02,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 17:52:02,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936929364] [2024-11-08 17:52:02,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:52:02,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:52:02,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:52:02,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:52:02,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:52:02,373 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 91 [2024-11-08 17:52:02,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:52:02,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:52:02,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 91 [2024-11-08 17:52:02,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:52:05,213 INFO L124 PetriNetUnfolderBase]: 12507/23480 cut-off events. [2024-11-08 17:52:05,213 INFO L125 PetriNetUnfolderBase]: For 421/421 co-relation queries the response was YES. [2024-11-08 17:52:05,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39714 conditions, 23480 events. 12507/23480 cut-off events. For 421/421 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 202928 event pairs, 9633 based on Foata normal form. 0/21439 useless extension candidates. Maximal degree in co-relation 39708. Up to 15860 conditions per place. [2024-11-08 17:52:05,422 INFO L140 encePairwiseOnDemand]: 81/91 looper letters, 35 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2024-11-08 17:52:05,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 228 flow [2024-11-08 17:52:05,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:52:05,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:52:05,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-11-08 17:52:05,429 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5494505494505495 [2024-11-08 17:52:05,430 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 174 flow. Second operand 3 states and 150 transitions. [2024-11-08 17:52:05,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 228 flow [2024-11-08 17:52:05,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 70 transitions, 228 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:52:05,438 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 158 flow [2024-11-08 17:52:05,440 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2024-11-08 17:52:05,441 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -12 predicate places. [2024-11-08 17:52:05,441 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 158 flow [2024-11-08 17:52:05,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:52:05,442 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:52:05,443 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:52:05,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:52:05,443 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-08 17:52:05,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:52:05,445 INFO L85 PathProgramCache]: Analyzing trace with hash 120982305, now seen corresponding path program 1 times [2024-11-08 17:52:05,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:52:05,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448757110] [2024-11-08 17:52:05,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:52:05,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:52:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:05,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:52:05,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:52:05,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448757110] [2024-11-08 17:52:05,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448757110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:52:05,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:52:05,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:52:05,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131388220] [2024-11-08 17:52:05,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:52:05,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:52:05,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:52:05,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:52:05,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:52:06,360 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 91 [2024-11-08 17:52:06,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 158 flow. Second operand has 6 states, 6 states have (on average 44.666666666666664) internal successors, (268), 6 states have internal predecessors, (268), 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) [2024-11-08 17:52:06,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:52:06,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 91 [2024-11-08 17:52:06,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:52:09,303 INFO L124 PetriNetUnfolderBase]: 14884/29829 cut-off events. [2024-11-08 17:52:09,303 INFO L125 PetriNetUnfolderBase]: For 548/548 co-relation queries the response was YES. [2024-11-08 17:52:09,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49249 conditions, 29829 events. 14884/29829 cut-off events. For 548/548 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 287394 event pairs, 2557 based on Foata normal form. 0/25323 useless extension candidates. Maximal degree in co-relation 49242. Up to 7485 conditions per place. [2024-11-08 17:52:09,567 INFO L140 encePairwiseOnDemand]: 80/91 looper letters, 92 selfloop transitions, 12 changer transitions 0/137 dead transitions. [2024-11-08 17:52:09,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 137 transitions, 540 flow [2024-11-08 17:52:09,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:52:09,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:52:09,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 365 transitions. [2024-11-08 17:52:09,570 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6684981684981685 [2024-11-08 17:52:09,570 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 158 flow. Second operand 6 states and 365 transitions. [2024-11-08 17:52:09,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 137 transitions, 540 flow [2024-11-08 17:52:09,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 137 transitions, 539 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:52:09,580 INFO L231 Difference]: Finished difference. Result has 81 places, 76 transitions, 231 flow [2024-11-08 17:52:09,581 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=231, PETRI_PLACES=81, PETRI_TRANSITIONS=76} [2024-11-08 17:52:09,582 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -5 predicate places. [2024-11-08 17:52:09,582 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 76 transitions, 231 flow [2024-11-08 17:52:09,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.666666666666664) internal successors, (268), 6 states have internal predecessors, (268), 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) [2024-11-08 17:52:09,582 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:52:09,582 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-08 17:52:09,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:52:09,586 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-08 17:52:09,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:52:09,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1910121685, now seen corresponding path program 1 times [2024-11-08 17:52:09,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:52:09,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077822160] [2024-11-08 17:52:09,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:52:09,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:52:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 17:52:09,618 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 17:52:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 17:52:09,643 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 17:52:09,643 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 17:52:09,644 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 30 remaining) [2024-11-08 17:52:09,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (28 of 30 remaining) [2024-11-08 17:52:09,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 30 remaining) [2024-11-08 17:52:09,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 30 remaining) [2024-11-08 17:52:09,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 30 remaining) [2024-11-08 17:52:09,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 30 remaining) [2024-11-08 17:52:09,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 30 remaining) [2024-11-08 17:52:09,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 30 remaining) [2024-11-08 17:52:09,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (21 of 30 remaining) [2024-11-08 17:52:09,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 30 remaining) [2024-11-08 17:52:09,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 30 remaining) [2024-11-08 17:52:09,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 30 remaining) [2024-11-08 17:52:09,648 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 30 remaining) [2024-11-08 17:52:09,648 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 30 remaining) [2024-11-08 17:52:09,648 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 30 remaining) [2024-11-08 17:52:09,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (14 of 30 remaining) [2024-11-08 17:52:09,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 30 remaining) [2024-11-08 17:52:09,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 30 remaining) [2024-11-08 17:52:09,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 30 remaining) [2024-11-08 17:52:09,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 30 remaining) [2024-11-08 17:52:09,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 30 remaining) [2024-11-08 17:52:09,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 30 remaining) [2024-11-08 17:52:09,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (7 of 30 remaining) [2024-11-08 17:52:09,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 30 remaining) [2024-11-08 17:52:09,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 30 remaining) [2024-11-08 17:52:09,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 30 remaining) [2024-11-08 17:52:09,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 30 remaining) [2024-11-08 17:52:09,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 30 remaining) [2024-11-08 17:52:09,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 30 remaining) [2024-11-08 17:52:09,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 30 remaining) [2024-11-08 17:52:09,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 17:52:09,656 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-08 17:52:09,657 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 17:52:09,657 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-08 17:52:09,733 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 17:52:09,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 119 transitions, 266 flow [2024-11-08 17:52:09,758 INFO L124 PetriNetUnfolderBase]: 16/138 cut-off events. [2024-11-08 17:52:09,758 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-08 17:52:09,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 138 events. 16/138 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 513 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 117. Up to 5 conditions per place. [2024-11-08 17:52:09,760 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 119 transitions, 266 flow [2024-11-08 17:52:09,766 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 119 transitions, 266 flow [2024-11-08 17:52:09,767 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:52:09,768 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;@580c6b33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:52:09,768 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2024-11-08 17:52:09,773 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:52:09,773 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-08 17:52:09,773 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:52:09,773 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:52:09,773 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-08 17:52:09,774 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-08 17:52:09,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:52:09,774 INFO L85 PathProgramCache]: Analyzing trace with hash 536405, now seen corresponding path program 1 times [2024-11-08 17:52:09,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:52:09,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532710172] [2024-11-08 17:52:09,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:52:09,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:52:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:09,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:52:09,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:52:09,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532710172] [2024-11-08 17:52:09,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532710172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:52:09,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:52:09,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:52:09,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194386825] [2024-11-08 17:52:09,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:52:09,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 17:52:09,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:52:09,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 17:52:09,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:52:09,798 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 119 [2024-11-08 17:52:09,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 119 transitions, 266 flow. Second operand has 2 states, 2 states have (on average 67.0) internal successors, (134), 2 states have internal predecessors, (134), 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) [2024-11-08 17:52:09,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:52:09,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 119 [2024-11-08 17:52:09,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:52:30,861 INFO L124 PetriNetUnfolderBase]: 86160/193568 cut-off events. [2024-11-08 17:52:30,861 INFO L125 PetriNetUnfolderBase]: For 7903/7903 co-relation queries the response was YES. [2024-11-08 17:52:31,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297255 conditions, 193568 events. 86160/193568 cut-off events. For 7903/7903 co-relation queries the response was YES. Maximal size of possible extension queue 6378. Compared 2585010 event pairs, 62793 based on Foata normal form. 18627/161124 useless extension candidates. Maximal degree in co-relation 28884. Up to 100038 conditions per place. [2024-11-08 17:52:33,049 INFO L140 encePairwiseOnDemand]: 110/119 looper letters, 39 selfloop transitions, 0 changer transitions 0/104 dead transitions. [2024-11-08 17:52:33,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 104 transitions, 314 flow [2024-11-08 17:52:33,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 17:52:33,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-08 17:52:33,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 180 transitions. [2024-11-08 17:52:33,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7563025210084033 [2024-11-08 17:52:33,051 INFO L175 Difference]: Start difference. First operand has 112 places, 119 transitions, 266 flow. Second operand 2 states and 180 transitions. [2024-11-08 17:52:33,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 104 transitions, 314 flow [2024-11-08 17:52:33,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 104 transitions, 308 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-08 17:52:33,061 INFO L231 Difference]: Finished difference. Result has 106 places, 104 transitions, 230 flow [2024-11-08 17:52:33,062 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=230, PETRI_PLACES=106, PETRI_TRANSITIONS=104} [2024-11-08 17:52:33,062 INFO L277 CegarLoopForPetriNet]: 112 programPoint places, -6 predicate places. [2024-11-08 17:52:33,063 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 104 transitions, 230 flow [2024-11-08 17:52:33,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 67.0) internal successors, (134), 2 states have internal predecessors, (134), 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) [2024-11-08 17:52:33,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:52:33,063 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:52:33,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 17:52:33,064 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-08 17:52:33,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:52:33,065 INFO L85 PathProgramCache]: Analyzing trace with hash 221704786, now seen corresponding path program 1 times [2024-11-08 17:52:33,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:52:33,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270174376] [2024-11-08 17:52:33,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:52:33,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:52:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:33,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:52:33,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:52:33,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270174376] [2024-11-08 17:52:33,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270174376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:52:33,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:52:33,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 17:52:33,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385266017] [2024-11-08 17:52:33,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:52:33,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:52:33,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:52:33,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:52:33,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:52:33,208 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 119 [2024-11-08 17:52:33,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 104 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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) [2024-11-08 17:52:33,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:52:33,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 119 [2024-11-08 17:52:33,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand