./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.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_80cab53f-cba0-44f1-ba69-911b4b307f2c/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80cab53f-cba0-44f1-ba69-911b4b307f2c/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_80cab53f-cba0-44f1-ba69-911b4b307f2c/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80cab53f-cba0-44f1-ba69-911b4b307f2c/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80cab53f-cba0-44f1-ba69-911b4b307f2c/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_80cab53f-cba0-44f1-ba69-911b4b307f2c/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 ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:09:41,760 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:09:41,878 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80cab53f-cba0-44f1-ba69-911b4b307f2c/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 18:09:41,887 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:09:41,890 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:09:41,925 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:09:41,925 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:09:41,926 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:09:41,927 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:09:41,927 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:09:41,928 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:09:41,928 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:09:41,929 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:09:41,930 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:09:41,930 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:09:41,931 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:09:41,931 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:09:41,932 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:09:41,932 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:09:41,933 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:09:41,933 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 18:09:41,938 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 18:09:41,938 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 18:09:41,939 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:09:41,939 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 18:09:41,939 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:09:41,940 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 18:09:41,940 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:09:41,940 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:09:41,941 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:09:41,941 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:09:41,942 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:09:41,942 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:09:41,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:09:41,947 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:09:41,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:09:41,948 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:09:41,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:09:41,948 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:09:41,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:09:41,949 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:09:41,951 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:09:41,951 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_80cab53f-cba0-44f1-ba69-911b4b307f2c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80cab53f-cba0-44f1-ba69-911b4b307f2c/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 [2024-11-08 18:09:42,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:09:42,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:09:42,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:09:42,335 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:09:42,336 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:09:42,337 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80cab53f-cba0-44f1-ba69-911b4b307f2c/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i Unable to find full path for "g++" [2024-11-08 18:09:44,669 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:09:44,954 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:09:44,955 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80cab53f-cba0-44f1-ba69-911b4b307f2c/sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2024-11-08 18:09:44,972 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80cab53f-cba0-44f1-ba69-911b4b307f2c/bin/uautomizer-verify-jihMAELWvX/data/a6940cb34/ecac1352e61149b1afa0e6d9d152e7ff/FLAGbcb460a8f [2024-11-08 18:09:44,988 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80cab53f-cba0-44f1-ba69-911b4b307f2c/bin/uautomizer-verify-jihMAELWvX/data/a6940cb34/ecac1352e61149b1afa0e6d9d152e7ff [2024-11-08 18:09:44,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:09:44,994 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:09:44,996 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:09:44,996 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:09:45,004 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:09:45,005 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:09:44" (1/1) ... [2024-11-08 18:09:45,006 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c197a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:45, skipping insertion in model container [2024-11-08 18:09:45,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:09:44" (1/1) ... [2024-11-08 18:09:45,061 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:09:45,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:09:45,750 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:09:45,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:09:45,903 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:09:45,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:45 WrapperNode [2024-11-08 18:09:45,904 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:09:45,905 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:09:45,906 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:09:45,906 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:09:45,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:45" (1/1) ... [2024-11-08 18:09:45,937 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:45" (1/1) ... [2024-11-08 18:09:45,972 INFO L138 Inliner]: procedures = 171, calls = 44, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 159 [2024-11-08 18:09:45,972 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:09:45,973 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:09:45,974 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:09:45,974 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:09:45,991 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:45" (1/1) ... [2024-11-08 18:09:45,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:45" (1/1) ... [2024-11-08 18:09:45,995 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:45" (1/1) ... [2024-11-08 18:09:46,015 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-11-08 18:09:46,015 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:45" (1/1) ... [2024-11-08 18:09:46,016 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:45" (1/1) ... [2024-11-08 18:09:46,030 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:45" (1/1) ... [2024-11-08 18:09:46,040 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:45" (1/1) ... [2024-11-08 18:09:46,046 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:45" (1/1) ... [2024-11-08 18:09:46,051 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:45" (1/1) ... [2024-11-08 18:09:46,056 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:09:46,065 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:09:46,065 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:09:46,065 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:09:46,066 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:45" (1/1) ... [2024-11-08 18:09:46,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:09:46,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80cab53f-cba0-44f1-ba69-911b4b307f2c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:09:46,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80cab53f-cba0-44f1-ba69-911b4b307f2c/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:09:46,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80cab53f-cba0-44f1-ba69-911b4b307f2c/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:09:46,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 18:09:46,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 18:09:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 18:09:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-08 18:09:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 18:09:46,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 18:09:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 18:09:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 18:09:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-08 18:09:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:09:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 18:09:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-08 18:09:46,181 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-08 18:09:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 18:09:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:09:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 18:09:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 18:09:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 18:09:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-08 18:09:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:09:46,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:09:46,185 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 18:09:46,387 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:09:46,391 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:09:46,844 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 18:09:46,844 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:09:47,110 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:09:47,111 INFO L316 CfgBuilder]: Removed 16 assume(true) statements. [2024-11-08 18:09:47,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:09:47 BoogieIcfgContainer [2024-11-08 18:09:47,112 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:09:47,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:09:47,117 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:09:47,121 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:09:47,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:09:44" (1/3) ... [2024-11-08 18:09:47,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3250d61b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:09:47, skipping insertion in model container [2024-11-08 18:09:47,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:09:45" (2/3) ... [2024-11-08 18:09:47,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3250d61b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:09:47, skipping insertion in model container [2024-11-08 18:09:47,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:09:47" (3/3) ... [2024-11-08 18:09:47,127 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2024-11-08 18:09:47,182 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:09:47,183 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-08 18:09:47,183 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 18:09:47,263 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-08 18:09:47,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 104 transitions, 215 flow [2024-11-08 18:09:47,428 INFO L124 PetriNetUnfolderBase]: 36/159 cut-off events. [2024-11-08 18:09:47,428 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 18:09:47,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 159 events. 36/159 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 671 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 99. Up to 6 conditions per place. [2024-11-08 18:09:47,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 104 transitions, 215 flow [2024-11-08 18:09:47,450 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 104 transitions, 215 flow [2024-11-08 18:09:47,467 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:09:47,479 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;@7da41dca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:09:47,479 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-08 18:09:47,489 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:09:47,489 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2024-11-08 18:09:47,489 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:09:47,490 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:09:47,490 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 18:09:47,491 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2024-11-08 18:09:47,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:47,498 INFO L85 PathProgramCache]: Analyzing trace with hash 14275922, now seen corresponding path program 1 times [2024-11-08 18:09:47,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:47,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411476127] [2024-11-08 18:09:47,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:47,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:47,895 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 18:09:47,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:09:47,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411476127] [2024-11-08 18:09:47,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411476127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:09:47,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:09:47,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 18:09:47,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433589461] [2024-11-08 18:09:47,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:09:47,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:09:47,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:09:47,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:09:47,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:09:48,004 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 104 [2024-11-08 18:09:48,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 104 transitions, 215 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 18:09:48,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:09:48,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 104 [2024-11-08 18:09:48,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:09:48,499 INFO L124 PetriNetUnfolderBase]: 345/1074 cut-off events. [2024-11-08 18:09:48,499 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 18:09:48,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1747 conditions, 1074 events. 345/1074 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6727 event pairs, 270 based on Foata normal form. 257/1274 useless extension candidates. Maximal degree in co-relation 1667. Up to 601 conditions per place. [2024-11-08 18:09:48,522 INFO L140 encePairwiseOnDemand]: 80/104 looper letters, 52 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2024-11-08 18:09:48,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 95 transitions, 305 flow [2024-11-08 18:09:48,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:09:48,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:09:48,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 209 transitions. [2024-11-08 18:09:48,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6698717948717948 [2024-11-08 18:09:48,540 INFO L175 Difference]: Start difference. First operand has 83 places, 104 transitions, 215 flow. Second operand 3 states and 209 transitions. [2024-11-08 18:09:48,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 95 transitions, 305 flow [2024-11-08 18:09:48,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 95 transitions, 305 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 18:09:48,549 INFO L231 Difference]: Finished difference. Result has 81 places, 80 transitions, 171 flow [2024-11-08 18:09:48,552 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=81, PETRI_TRANSITIONS=80} [2024-11-08 18:09:48,556 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -2 predicate places. [2024-11-08 18:09:48,557 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 80 transitions, 171 flow [2024-11-08 18:09:48,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 18:09:48,557 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:09:48,558 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 18:09:48,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:09:48,558 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2024-11-08 18:09:48,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:48,559 INFO L85 PathProgramCache]: Analyzing trace with hash 14275923, now seen corresponding path program 1 times [2024-11-08 18:09:48,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:48,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256338405] [2024-11-08 18:09:48,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:48,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:48,812 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 18:09:48,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:09:48,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256338405] [2024-11-08 18:09:48,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256338405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:09:48,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:09:48,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 18:09:48,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090506979] [2024-11-08 18:09:48,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:09:48,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:09:48,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:09:48,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:09:48,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:09:48,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 104 [2024-11-08 18:09:48,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 18:09:48,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:09:48,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 104 [2024-11-08 18:09:48,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:09:49,230 INFO L124 PetriNetUnfolderBase]: 349/1067 cut-off events. [2024-11-08 18:09:49,230 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-08 18:09:49,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1781 conditions, 1067 events. 349/1067 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6701 event pairs, 0 based on Foata normal form. 2/996 useless extension candidates. Maximal degree in co-relation 1733. Up to 672 conditions per place. [2024-11-08 18:09:49,239 INFO L140 encePairwiseOnDemand]: 99/104 looper letters, 55 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2024-11-08 18:09:49,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 96 transitions, 317 flow [2024-11-08 18:09:49,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:09:49,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:09:49,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2024-11-08 18:09:49,243 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2024-11-08 18:09:49,243 INFO L175 Difference]: Start difference. First operand has 81 places, 80 transitions, 171 flow. Second operand 3 states and 183 transitions. [2024-11-08 18:09:49,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 96 transitions, 317 flow [2024-11-08 18:09:49,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 96 transitions, 313 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:09:49,252 INFO L231 Difference]: Finished difference. Result has 82 places, 80 transitions, 179 flow [2024-11-08 18:09:49,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=82, PETRI_TRANSITIONS=80} [2024-11-08 18:09:49,255 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -1 predicate places. [2024-11-08 18:09:49,255 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 80 transitions, 179 flow [2024-11-08 18:09:49,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 18:09:49,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:09:49,256 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-08 18:09:49,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:09:49,256 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2024-11-08 18:09:49,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:49,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1082478152, now seen corresponding path program 1 times [2024-11-08 18:09:49,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:49,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417028715] [2024-11-08 18:09:49,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:49,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:49,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:09:49,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:09:49,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417028715] [2024-11-08 18:09:49,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417028715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:09:49,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384606105] [2024-11-08 18:09:49,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:49,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:09:49,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80cab53f-cba0-44f1-ba69-911b4b307f2c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:09:49,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80cab53f-cba0-44f1-ba69-911b4b307f2c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:09:49,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80cab53f-cba0-44f1-ba69-911b4b307f2c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:09:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:49,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 18:09:49,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:09:49,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 18:09:50,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:09:50,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:09:50,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:09:50,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384606105] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:09:50,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:09:50,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-11-08 18:09:50,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279947504] [2024-11-08 18:09:50,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:09:50,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 18:09:50,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:09:50,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 18:09:50,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:09:50,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 104 [2024-11-08 18:09:50,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 179 flow. Second operand has 9 states, 9 states have (on average 42.0) internal successors, (378), 9 states have internal predecessors, (378), 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 18:09:50,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:09:50,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 104 [2024-11-08 18:09:50,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:09:50,539 INFO L124 PetriNetUnfolderBase]: 65/220 cut-off events. [2024-11-08 18:09:50,539 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-11-08 18:09:50,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 220 events. 65/220 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 908 event pairs, 45 based on Foata normal form. 48/259 useless extension candidates. Maximal degree in co-relation 381. Up to 124 conditions per place. [2024-11-08 18:09:50,543 INFO L140 encePairwiseOnDemand]: 99/104 looper letters, 37 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-11-08 18:09:50,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 57 transitions, 202 flow [2024-11-08 18:09:50,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:09:50,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:09:50,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2024-11-08 18:09:50,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47596153846153844 [2024-11-08 18:09:50,546 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 179 flow. Second operand 4 states and 198 transitions. [2024-11-08 18:09:50,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 57 transitions, 202 flow [2024-11-08 18:09:50,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 57 transitions, 196 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 18:09:50,552 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 86 flow [2024-11-08 18:09:50,553 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-11-08 18:09:50,554 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -39 predicate places. [2024-11-08 18:09:50,555 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 86 flow [2024-11-08 18:09:50,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 42.0) internal successors, (378), 9 states have internal predecessors, (378), 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 18:09:50,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:09:50,556 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2024-11-08 18:09:50,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80cab53f-cba0-44f1-ba69-911b4b307f2c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:09:50,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80cab53f-cba0-44f1-ba69-911b4b307f2c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:09:50,761 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2024-11-08 18:09:50,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:50,762 INFO L85 PathProgramCache]: Analyzing trace with hash 802916129, now seen corresponding path program 1 times [2024-11-08 18:09:50,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:50,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175516409] [2024-11-08 18:09:50,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:50,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:09:50,798 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 18:09:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:09:50,835 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 18:09:50,835 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 18:09:50,837 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-11-08 18:09:50,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2024-11-08 18:09:50,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2024-11-08 18:09:50,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (5 of 9 remaining) [2024-11-08 18:09:50,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (4 of 9 remaining) [2024-11-08 18:09:50,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2024-11-08 18:09:50,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2024-11-08 18:09:50,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 9 remaining) [2024-11-08 18:09:50,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2024-11-08 18:09:50,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:09:50,846 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-08 18:09:50,851 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 18:09:50,851 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-08 18:09:50,895 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 18:09:50,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 149 transitions, 314 flow [2024-11-08 18:09:50,944 INFO L124 PetriNetUnfolderBase]: 62/274 cut-off events. [2024-11-08 18:09:50,945 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-08 18:09:50,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 274 events. 62/274 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1271 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 163. Up to 9 conditions per place. [2024-11-08 18:09:50,949 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 149 transitions, 314 flow [2024-11-08 18:09:50,954 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 149 transitions, 314 flow [2024-11-08 18:09:50,955 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:09:50,956 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;@7da41dca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:09:50,957 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-08 18:09:50,959 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:09:50,959 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2024-11-08 18:09:50,959 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:09:50,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:09:50,960 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 18:09:50,960 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-08 18:09:50,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:50,961 INFO L85 PathProgramCache]: Analyzing trace with hash 18862738, now seen corresponding path program 1 times [2024-11-08 18:09:50,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:50,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277740917] [2024-11-08 18:09:50,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:50,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:51,025 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 18:09:51,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:09:51,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277740917] [2024-11-08 18:09:51,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277740917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:09:51,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:09:51,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 18:09:51,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237651609] [2024-11-08 18:09:51,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:09:51,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:09:51,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:09:51,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:09:51,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:09:51,051 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 149 [2024-11-08 18:09:51,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 149 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 18:09:51,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:09:51,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 149 [2024-11-08 18:09:51,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:09:54,558 INFO L124 PetriNetUnfolderBase]: 11267/23285 cut-off events. [2024-11-08 18:09:54,559 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-11-08 18:09:54,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39881 conditions, 23285 events. 11267/23285 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 221402 event pairs, 9210 based on Foata normal form. 6595/28769 useless extension candidates. Maximal degree in co-relation 16083. Up to 14842 conditions per place. [2024-11-08 18:09:54,765 INFO L140 encePairwiseOnDemand]: 115/149 looper letters, 84 selfloop transitions, 2 changer transitions 0/144 dead transitions. [2024-11-08 18:09:54,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 144 transitions, 476 flow [2024-11-08 18:09:54,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:09:54,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:09:54,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2024-11-08 18:09:54,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.697986577181208 [2024-11-08 18:09:54,769 INFO L175 Difference]: Start difference. First operand has 118 places, 149 transitions, 314 flow. Second operand 3 states and 312 transitions. [2024-11-08 18:09:54,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 144 transitions, 476 flow [2024-11-08 18:09:54,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 144 transitions, 476 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 18:09:54,785 INFO L231 Difference]: Finished difference. Result has 115 places, 114 transitions, 248 flow [2024-11-08 18:09:54,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=115, PETRI_TRANSITIONS=114} [2024-11-08 18:09:54,787 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -3 predicate places. [2024-11-08 18:09:54,787 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 114 transitions, 248 flow [2024-11-08 18:09:54,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 18:09:54,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:09:54,788 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 18:09:54,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:09:54,789 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-08 18:09:54,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:54,790 INFO L85 PathProgramCache]: Analyzing trace with hash 18862739, now seen corresponding path program 1 times [2024-11-08 18:09:54,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:54,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819979403] [2024-11-08 18:09:54,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:54,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:54,902 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 18:09:54,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:09:54,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819979403] [2024-11-08 18:09:54,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819979403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:09:54,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:09:54,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 18:09:54,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148024135] [2024-11-08 18:09:54,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:09:54,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:09:54,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:09:54,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:09:54,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:09:54,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 149 [2024-11-08 18:09:54,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 114 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 18:09:54,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:09:54,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 149 [2024-11-08 18:09:54,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:09:58,186 INFO L124 PetriNetUnfolderBase]: 12019/25002 cut-off events. [2024-11-08 18:09:58,187 INFO L125 PetriNetUnfolderBase]: For 465/465 co-relation queries the response was YES. [2024-11-08 18:09:58,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42947 conditions, 25002 events. 12019/25002 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 238679 event pairs, 10322 based on Foata normal form. 2/23436 useless extension candidates. Maximal degree in co-relation 39029. Up to 17549 conditions per place. [2024-11-08 18:09:58,329 INFO L140 encePairwiseOnDemand]: 144/149 looper letters, 73 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2024-11-08 18:09:58,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 131 transitions, 432 flow [2024-11-08 18:09:58,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:09:58,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:09:58,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 252 transitions. [2024-11-08 18:09:58,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5637583892617449 [2024-11-08 18:09:58,331 INFO L175 Difference]: Start difference. First operand has 115 places, 114 transitions, 248 flow. Second operand 3 states and 252 transitions. [2024-11-08 18:09:58,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 131 transitions, 432 flow [2024-11-08 18:09:58,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 131 transitions, 428 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:09:58,378 INFO L231 Difference]: Finished difference. Result has 116 places, 115 transitions, 260 flow [2024-11-08 18:09:58,378 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=116, PETRI_TRANSITIONS=115} [2024-11-08 18:09:58,379 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -2 predicate places. [2024-11-08 18:09:58,379 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 115 transitions, 260 flow [2024-11-08 18:09:58,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 18:09:58,380 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:09:58,380 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-08 18:09:58,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:09:58,381 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-08 18:09:58,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:58,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1417190008, now seen corresponding path program 1 times [2024-11-08 18:09:58,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:58,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974253274] [2024-11-08 18:09:58,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:58,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:58,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:09:58,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:09:58,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974253274] [2024-11-08 18:09:58,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974253274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:09:58,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935844519] [2024-11-08 18:09:58,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:58,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:09:58,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80cab53f-cba0-44f1-ba69-911b4b307f2c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:09:58,519 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80cab53f-cba0-44f1-ba69-911b4b307f2c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:09:58,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80cab53f-cba0-44f1-ba69-911b4b307f2c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:09:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:58,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 18:09:58,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:09:58,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 18:09:58,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:09:58,760 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:09:58,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:09:58,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935844519] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:09:58,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:09:58,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-11-08 18:09:58,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411993464] [2024-11-08 18:09:58,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:09:58,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 18:09:58,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:09:58,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 18:09:58,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:09:58,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 149 [2024-11-08 18:09:58,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 115 transitions, 260 flow. Second operand has 9 states, 9 states have (on average 59.0) internal successors, (531), 9 states have internal predecessors, (531), 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 18:09:58,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:09:58,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 149 [2024-11-08 18:09:58,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:09:59,691 INFO L124 PetriNetUnfolderBase]: 2237/4129 cut-off events. [2024-11-08 18:09:59,691 INFO L125 PetriNetUnfolderBase]: For 527/527 co-relation queries the response was YES. [2024-11-08 18:09:59,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8058 conditions, 4129 events. 2237/4129 cut-off events. For 527/527 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 31160 event pairs, 0 based on Foata normal form. 816/4843 useless extension candidates. Maximal degree in co-relation 677. Up to 2944 conditions per place. [2024-11-08 18:09:59,713 INFO L140 encePairwiseOnDemand]: 144/149 looper letters, 86 selfloop transitions, 3 changer transitions 0/124 dead transitions. [2024-11-08 18:09:59,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 124 transitions, 444 flow [2024-11-08 18:09:59,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:09:59,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 18:09:59,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 375 transitions. [2024-11-08 18:09:59,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5033557046979866 [2024-11-08 18:09:59,716 INFO L175 Difference]: Start difference. First operand has 116 places, 115 transitions, 260 flow. Second operand 5 states and 375 transitions. [2024-11-08 18:09:59,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 124 transitions, 444 flow [2024-11-08 18:09:59,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 124 transitions, 442 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:09:59,719 INFO L231 Difference]: Finished difference. Result has 81 places, 73 transitions, 168 flow [2024-11-08 18:09:59,719 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=81, PETRI_TRANSITIONS=73} [2024-11-08 18:09:59,720 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -37 predicate places. [2024-11-08 18:09:59,720 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 73 transitions, 168 flow [2024-11-08 18:09:59,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 59.0) internal successors, (531), 9 states have internal predecessors, (531), 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 18:09:59,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:09:59,721 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:09:59,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80cab53f-cba0-44f1-ba69-911b4b307f2c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 18:09:59,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80cab53f-cba0-44f1-ba69-911b4b307f2c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:09:59,925 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-08 18:09:59,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:59,926 INFO L85 PathProgramCache]: Analyzing trace with hash 393693255, now seen corresponding path program 1 times [2024-11-08 18:09:59,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:59,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18503028] [2024-11-08 18:09:59,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:59,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:10:00,019 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 18:10:00,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:10:00,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18503028] [2024-11-08 18:10:00,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18503028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:10:00,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:10:00,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:10:00,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183692195] [2024-11-08 18:10:00,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:10:00,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:10:00,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:10:00,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:10:00,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:10:00,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 149 [2024-11-08 18:10:00,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 73 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 18:10:00,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:10:00,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 149 [2024-11-08 18:10:00,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:10:00,203 INFO L124 PetriNetUnfolderBase]: 468/1032 cut-off events. [2024-11-08 18:10:00,203 INFO L125 PetriNetUnfolderBase]: For 365/365 co-relation queries the response was YES. [2024-11-08 18:10:00,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2092 conditions, 1032 events. 468/1032 cut-off events. For 365/365 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6080 event pairs, 368 based on Foata normal form. 0/1013 useless extension candidates. Maximal degree in co-relation 1481. Up to 634 conditions per place. [2024-11-08 18:10:00,209 INFO L140 encePairwiseOnDemand]: 143/149 looper letters, 34 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-11-08 18:10:00,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 53 transitions, 215 flow [2024-11-08 18:10:00,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:10:00,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:10:00,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2024-11-08 18:10:00,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44798657718120805 [2024-11-08 18:10:00,211 INFO L175 Difference]: Start difference. First operand has 81 places, 73 transitions, 168 flow. Second operand 4 states and 267 transitions. [2024-11-08 18:10:00,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 53 transitions, 215 flow [2024-11-08 18:10:00,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 53 transitions, 204 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-08 18:10:00,213 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 101 flow [2024-11-08 18:10:00,215 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2024-11-08 18:10:00,216 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -68 predicate places. [2024-11-08 18:10:00,216 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 101 flow [2024-11-08 18:10:00,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 18:10:00,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:10:00,217 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1] [2024-11-08 18:10:00,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 18:10:00,217 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-08 18:10:00,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:10:00,217 INFO L85 PathProgramCache]: Analyzing trace with hash -139847707, now seen corresponding path program 1 times [2024-11-08 18:10:00,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:10:00,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267592287] [2024-11-08 18:10:00,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:10:00,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:10:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:10:00,246 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 18:10:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:10:00,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 18:10:00,275 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 18:10:00,275 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-08 18:10:00,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2024-11-08 18:10:00,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2024-11-08 18:10:00,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (6 of 10 remaining) [2024-11-08 18:10:00,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (5 of 10 remaining) [2024-11-08 18:10:00,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2024-11-08 18:10:00,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2024-11-08 18:10:00,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 10 remaining) [2024-11-08 18:10:00,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2024-11-08 18:10:00,277 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2024-11-08 18:10:00,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 18:10:00,277 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-08 18:10:00,278 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 18:10:00,278 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-08 18:10:00,326 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 18:10:00,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 194 transitions, 415 flow [2024-11-08 18:10:00,405 INFO L124 PetriNetUnfolderBase]: 93/416 cut-off events. [2024-11-08 18:10:00,405 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-08 18:10:00,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 416 events. 93/416 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2029 event pairs, 1 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 285. Up to 16 conditions per place. [2024-11-08 18:10:00,411 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 194 transitions, 415 flow [2024-11-08 18:10:00,418 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 194 transitions, 415 flow [2024-11-08 18:10:00,420 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:10:00,421 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;@7da41dca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:10:00,421 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-08 18:10:00,423 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:10:00,424 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2024-11-08 18:10:00,424 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:10:00,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:10:00,424 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 18:10:00,424 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2024-11-08 18:10:00,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:10:00,425 INFO L85 PathProgramCache]: Analyzing trace with hash 24834834, now seen corresponding path program 1 times [2024-11-08 18:10:00,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:10:00,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635040530] [2024-11-08 18:10:00,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:10:00,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:10:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:10:00,466 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 18:10:00,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:10:00,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635040530] [2024-11-08 18:10:00,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635040530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:10:00,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:10:00,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 18:10:00,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070479408] [2024-11-08 18:10:00,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:10:00,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:10:00,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:10:00,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:10:00,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:10:00,485 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 194 [2024-11-08 18:10:00,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 194 transitions, 415 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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 18:10:00,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:10:00,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 194 [2024-11-08 18:10:00,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand