./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_09-ptrmunge_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88f07984-f973-4115-83a8-9bd7d4c6fca9/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88f07984-f973-4115-83a8-9bd7d4c6fca9/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88f07984-f973-4115-83a8-9bd7d4c6fca9/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88f07984-f973-4115-83a8-9bd7d4c6fca9/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_09-ptrmunge_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88f07984-f973-4115-83a8-9bd7d4c6fca9/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88f07984-f973-4115-83a8-9bd7d4c6fca9/bin/uautomizer-verify-aQ6SnzHsRB --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 7b88fee59ad03447f68c116aa52c40e006cc633d8116aa4d446048afd18fa64f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:01:36,155 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:01:36,269 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88f07984-f973-4115-83a8-9bd7d4c6fca9/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 03:01:36,277 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:01:36,281 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:01:36,319 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:01:36,321 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:01:36,321 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:01:36,321 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:01:36,321 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:01:36,322 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:01:36,323 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:01:36,323 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:01:36,324 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:01:36,324 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:01:36,324 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:01:36,324 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:01:36,324 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:01:36,324 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:01:36,324 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:01:36,325 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:01:36,325 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:01:36,325 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:01:36,325 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:01:36,325 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:01:36,326 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:01:36,326 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:01:36,326 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:01:36,326 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:01:36,326 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:01:36,326 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:01:36,327 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:01:36,327 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:01:36,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:01:36,328 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:01:36,328 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:01:36,328 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:01:36,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:01:36,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:01:36,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:01:36,329 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:01:36,329 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:01:36,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:01:36,329 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:01:36,329 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:01:36,329 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:01:36,329 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:01:36,329 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88f07984-f973-4115-83a8-9bd7d4c6fca9/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 7b88fee59ad03447f68c116aa52c40e006cc633d8116aa4d446048afd18fa64f [2024-11-28 03:01:36,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:01:36,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:01:36,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:01:36,684 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:01:36,684 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:01:36,685 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88f07984-f973-4115-83a8-9bd7d4c6fca9/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2024-11-28 03:01:40,310 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88f07984-f973-4115-83a8-9bd7d4c6fca9/bin/uautomizer-verify-aQ6SnzHsRB/data/c256beec4/b5e09bdda1cd4f3f8b4c8ab5fb317cc0/FLAG7db1405a1 [2024-11-28 03:01:40,885 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:01:40,886 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88f07984-f973-4115-83a8-9bd7d4c6fca9/sv-benchmarks/c/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2024-11-28 03:01:40,913 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88f07984-f973-4115-83a8-9bd7d4c6fca9/bin/uautomizer-verify-aQ6SnzHsRB/data/c256beec4/b5e09bdda1cd4f3f8b4c8ab5fb317cc0/FLAG7db1405a1 [2024-11-28 03:01:40,944 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88f07984-f973-4115-83a8-9bd7d4c6fca9/bin/uautomizer-verify-aQ6SnzHsRB/data/c256beec4/b5e09bdda1cd4f3f8b4c8ab5fb317cc0 [2024-11-28 03:01:40,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:01:40,951 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:01:40,953 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:01:40,953 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:01:40,964 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:01:40,965 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:01:40" (1/1) ... [2024-11-28 03:01:40,969 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@715c9c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:40, skipping insertion in model container [2024-11-28 03:01:40,969 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:01:40" (1/1) ... [2024-11-28 03:01:41,025 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:01:41,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:01:41,545 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:01:41,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:01:41,680 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:01:41,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:41 WrapperNode [2024-11-28 03:01:41,682 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:01:41,683 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:01:41,683 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:01:41,683 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:01:41,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:41" (1/1) ... [2024-11-28 03:01:41,718 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:41" (1/1) ... [2024-11-28 03:01:41,770 INFO L138 Inliner]: procedures = 173, calls = 55, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 229 [2024-11-28 03:01:41,770 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:01:41,771 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:01:41,774 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:01:41,774 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:01:41,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:41" (1/1) ... [2024-11-28 03:01:41,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:41" (1/1) ... [2024-11-28 03:01:41,793 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:41" (1/1) ... [2024-11-28 03:01:41,826 INFO L175 MemorySlicer]: Split 32 memory accesses to 7 slices as follows [2, 5, 2, 5, 2, 5, 11]. 34 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 5, 0, 5, 0, 5, 1]. The 6 writes are split as follows [0, 0, 1, 0, 1, 0, 4]. [2024-11-28 03:01:41,826 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:41" (1/1) ... [2024-11-28 03:01:41,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:41" (1/1) ... [2024-11-28 03:01:41,852 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:41" (1/1) ... [2024-11-28 03:01:41,853 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:41" (1/1) ... [2024-11-28 03:01:41,858 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:41" (1/1) ... [2024-11-28 03:01:41,861 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:41" (1/1) ... [2024-11-28 03:01:41,862 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:41" (1/1) ... [2024-11-28 03:01:41,866 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:01:41,867 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:01:41,867 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:01:41,868 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:01:41,869 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:41" (1/1) ... [2024-11-28 03:01:41,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:01:41,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88f07984-f973-4115-83a8-9bd7d4c6fca9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:41,925 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88f07984-f973-4115-83a8-9bd7d4c6fca9/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:01:41,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88f07984-f973-4115-83a8-9bd7d4c6fca9/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:01:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:01:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:01:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:01:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 03:01:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 03:01:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 03:01:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-28 03:01:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-28 03:01:41,963 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-28 03:01:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:01:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:01:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 03:01:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 03:01:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 03:01:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 03:01:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-28 03:01:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 03:01:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:01:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:01:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-11-28 03:01:41,964 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-11-28 03:01:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:01:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:01:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:01:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:01:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 03:01:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 03:01:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 03:01:41,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 03:01:41,967 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 03:01:41,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:01:41,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:01:41,969 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 03:01:42,175 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:01:42,176 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:01:42,799 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:01:42,799 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:01:43,207 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:01:43,207 INFO L312 CfgBuilder]: Removed 14 assume(true) statements. [2024-11-28 03:01:43,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:01:43 BoogieIcfgContainer [2024-11-28 03:01:43,207 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:01:43,211 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:01:43,211 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:01:43,217 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:01:43,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:01:40" (1/3) ... [2024-11-28 03:01:43,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2650b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:01:43, skipping insertion in model container [2024-11-28 03:01:43,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:41" (2/3) ... [2024-11-28 03:01:43,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2650b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:01:43, skipping insertion in model container [2024-11-28 03:01:43,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:01:43" (3/3) ... [2024-11-28 03:01:43,220 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_09-ptrmunge_racing.i [2024-11-28 03:01:43,240 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:01:43,242 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_09-ptrmunge_racing.i that has 3 procedures, 122 locations, 1 initial locations, 14 loop locations, and 31 error locations. [2024-11-28 03:01:43,242 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:01:43,382 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-28 03:01:43,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 153 transitions, 326 flow [2024-11-28 03:01:43,614 INFO L124 PetriNetUnfolderBase]: 47/279 cut-off events. [2024-11-28 03:01:43,620 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-28 03:01:43,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 279 events. 47/279 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1608 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 169. Up to 8 conditions per place. [2024-11-28 03:01:43,636 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 153 transitions, 326 flow [2024-11-28 03:01:43,648 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 153 transitions, 326 flow [2024-11-28 03:01:43,665 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:01:43,685 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;@4a8531b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:01:43,685 INFO L334 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2024-11-28 03:01:43,693 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:01:43,693 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 03:01:43,693 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:01:43,693 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:01:43,694 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:01:43,694 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-28 03:01:43,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:43,703 INFO L85 PathProgramCache]: Analyzing trace with hash 645250, now seen corresponding path program 1 times [2024-11-28 03:01:43,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:43,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333412858] [2024-11-28 03:01:43,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:43,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:44,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:44,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:44,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333412858] [2024-11-28 03:01:44,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333412858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:44,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:01:44,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:01:44,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793328592] [2024-11-28 03:01:44,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:44,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:01:44,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:44,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:01:44,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:01:44,382 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 153 [2024-11-28 03:01:44,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 153 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2024-11-28 03:01:44,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:01:44,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 153 [2024-11-28 03:01:44,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:01:47,564 INFO L124 PetriNetUnfolderBase]: 7103/15669 cut-off events. [2024-11-28 03:01:47,565 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-11-28 03:01:47,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26738 conditions, 15669 events. 7103/15669 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 146894 event pairs, 4960 based on Foata normal form. 2790/16612 useless extension candidates. Maximal degree in co-relation 25583. Up to 8179 conditions per place. [2024-11-28 03:01:47,714 INFO L140 encePairwiseOnDemand]: 125/153 looper letters, 98 selfloop transitions, 2 changer transitions 0/165 dead transitions. [2024-11-28 03:01:47,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 165 transitions, 550 flow [2024-11-28 03:01:47,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:01:47,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:01:47,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2024-11-28 03:01:47,735 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7516339869281046 [2024-11-28 03:01:47,738 INFO L175 Difference]: Start difference. First operand has 128 places, 153 transitions, 326 flow. Second operand 3 states and 345 transitions. [2024-11-28 03:01:47,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 165 transitions, 550 flow [2024-11-28 03:01:47,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 165 transitions, 550 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:01:47,763 INFO L231 Difference]: Finished difference. Result has 126 places, 125 transitions, 274 flow [2024-11-28 03:01:47,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=126, PETRI_TRANSITIONS=125} [2024-11-28 03:01:47,774 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -2 predicate places. [2024-11-28 03:01:47,776 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 125 transitions, 274 flow [2024-11-28 03:01:47,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2024-11-28 03:01:47,777 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:01:47,777 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:01:47,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:01:47,778 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-28 03:01:47,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:47,779 INFO L85 PathProgramCache]: Analyzing trace with hash 645251, now seen corresponding path program 1 times [2024-11-28 03:01:47,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:47,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739407178] [2024-11-28 03:01:47,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:47,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:48,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:48,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:48,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739407178] [2024-11-28 03:01:48,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739407178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:48,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:01:48,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:01:48,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677884570] [2024-11-28 03:01:48,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:48,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:01:48,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:48,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:01:48,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:01:48,118 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 153 [2024-11-28 03:01:48,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 125 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2024-11-28 03:01:48,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:01:48,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 153 [2024-11-28 03:01:48,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:01:50,429 INFO L124 PetriNetUnfolderBase]: 6020/13953 cut-off events. [2024-11-28 03:01:50,430 INFO L125 PetriNetUnfolderBase]: For 623/623 co-relation queries the response was YES. [2024-11-28 03:01:50,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23918 conditions, 13953 events. 6020/13953 cut-off events. For 623/623 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 132686 event pairs, 2640 based on Foata normal form. 1/12122 useless extension candidates. Maximal degree in co-relation 23018. Up to 9321 conditions per place. [2024-11-28 03:01:50,525 INFO L140 encePairwiseOnDemand]: 149/153 looper letters, 78 selfloop transitions, 2 changer transitions 0/146 dead transitions. [2024-11-28 03:01:50,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 146 transitions, 476 flow [2024-11-28 03:01:50,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:01:50,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:01:50,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2024-11-28 03:01:50,530 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6230936819172114 [2024-11-28 03:01:50,530 INFO L175 Difference]: Start difference. First operand has 126 places, 125 transitions, 274 flow. Second operand 3 states and 286 transitions. [2024-11-28 03:01:50,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 146 transitions, 476 flow [2024-11-28 03:01:50,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 146 transitions, 472 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:01:50,567 INFO L231 Difference]: Finished difference. Result has 127 places, 125 transitions, 280 flow [2024-11-28 03:01:50,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=127, PETRI_TRANSITIONS=125} [2024-11-28 03:01:50,569 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -1 predicate places. [2024-11-28 03:01:50,569 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 125 transitions, 280 flow [2024-11-28 03:01:50,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2024-11-28 03:01:50,573 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:01:50,574 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 03:01:50,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:01:50,574 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-28 03:01:50,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:50,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1073065818, now seen corresponding path program 1 times [2024-11-28 03:01:50,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:50,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731917738] [2024-11-28 03:01:50,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:50,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:50,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:50,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:50,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731917738] [2024-11-28 03:01:50,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731917738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:50,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:01:50,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:01:50,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405125880] [2024-11-28 03:01:50,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:50,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:01:50,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:50,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:01:50,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:01:51,114 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 153 [2024-11-28 03:01:51,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 125 transitions, 280 flow. Second operand has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 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) [2024-11-28 03:01:51,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:01:51,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 153 [2024-11-28 03:01:51,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:01:51,253 INFO L124 PetriNetUnfolderBase]: 61/194 cut-off events. [2024-11-28 03:01:51,253 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-28 03:01:51,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 194 events. 61/194 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 827 event pairs, 0 based on Foata normal form. 42/224 useless extension candidates. Maximal degree in co-relation 386. Up to 123 conditions per place. [2024-11-28 03:01:51,254 INFO L140 encePairwiseOnDemand]: 149/153 looper letters, 45 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2024-11-28 03:01:51,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 74 transitions, 252 flow [2024-11-28 03:01:51,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:01:51,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:01:51,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 317 transitions. [2024-11-28 03:01:51,259 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5179738562091504 [2024-11-28 03:01:51,261 INFO L175 Difference]: Start difference. First operand has 127 places, 125 transitions, 280 flow. Second operand 4 states and 317 transitions. [2024-11-28 03:01:51,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 74 transitions, 252 flow [2024-11-28 03:01:51,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 74 transitions, 246 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 03:01:51,266 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 112 flow [2024-11-28 03:01:51,267 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-11-28 03:01:51,268 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -70 predicate places. [2024-11-28 03:01:51,269 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 112 flow [2024-11-28 03:01:51,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 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) [2024-11-28 03:01:51,270 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:01:51,271 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-28 03:01:51,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:01:51,271 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-28 03:01:51,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:51,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1094698812, now seen corresponding path program 1 times [2024-11-28 03:01:51,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:51,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281541922] [2024-11-28 03:01:51,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:51,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:01:51,317 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:01:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:01:51,382 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:01:51,382 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:01:51,383 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (54 of 55 remaining) [2024-11-28 03:01:51,386 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 55 remaining) [2024-11-28 03:01:51,389 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 55 remaining) [2024-11-28 03:01:51,389 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 55 remaining) [2024-11-28 03:01:51,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 55 remaining) [2024-11-28 03:01:51,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 55 remaining) [2024-11-28 03:01:51,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 55 remaining) [2024-11-28 03:01:51,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 55 remaining) [2024-11-28 03:01:51,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 55 remaining) [2024-11-28 03:01:51,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10ASSERT_VIOLATIONMEMORY_LEAK (45 of 55 remaining) [2024-11-28 03:01:51,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 55 remaining) [2024-11-28 03:01:51,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 55 remaining) [2024-11-28 03:01:51,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 55 remaining) [2024-11-28 03:01:51,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 55 remaining) [2024-11-28 03:01:51,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 55 remaining) [2024-11-28 03:01:51,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 55 remaining) [2024-11-28 03:01:51,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 55 remaining) [2024-11-28 03:01:51,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 55 remaining) [2024-11-28 03:01:51,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 55 remaining) [2024-11-28 03:01:51,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 55 remaining) [2024-11-28 03:01:51,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (34 of 55 remaining) [2024-11-28 03:01:51,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 55 remaining) [2024-11-28 03:01:51,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 55 remaining) [2024-11-28 03:01:51,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 55 remaining) [2024-11-28 03:01:51,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 55 remaining) [2024-11-28 03:01:51,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 55 remaining) [2024-11-28 03:01:51,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 55 remaining) [2024-11-28 03:01:51,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 55 remaining) [2024-11-28 03:01:51,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 55 remaining) [2024-11-28 03:01:51,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 55 remaining) [2024-11-28 03:01:51,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr10ASSERT_VIOLATIONMEMORY_LEAK (24 of 55 remaining) [2024-11-28 03:01:51,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 55 remaining) [2024-11-28 03:01:51,393 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 55 remaining) [2024-11-28 03:01:51,393 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 55 remaining) [2024-11-28 03:01:51,393 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 55 remaining) [2024-11-28 03:01:51,393 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 55 remaining) [2024-11-28 03:01:51,393 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 55 remaining) [2024-11-28 03:01:51,396 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 55 remaining) [2024-11-28 03:01:51,396 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 55 remaining) [2024-11-28 03:01:51,396 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 55 remaining) [2024-11-28 03:01:51,397 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 55 remaining) [2024-11-28 03:01:51,397 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10ASSERT_VIOLATIONMEMORY_LEAK (13 of 55 remaining) [2024-11-28 03:01:51,397 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 55 remaining) [2024-11-28 03:01:51,397 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 55 remaining) [2024-11-28 03:01:51,397 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 55 remaining) [2024-11-28 03:01:51,397 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 55 remaining) [2024-11-28 03:01:51,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 55 remaining) [2024-11-28 03:01:51,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 55 remaining) [2024-11-28 03:01:51,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 55 remaining) [2024-11-28 03:01:51,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 55 remaining) [2024-11-28 03:01:51,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 55 remaining) [2024-11-28 03:01:51,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 55 remaining) [2024-11-28 03:01:51,401 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr10ASSERT_VIOLATIONMEMORY_LEAK (2 of 55 remaining) [2024-11-28 03:01:51,401 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 55 remaining) [2024-11-28 03:01:51,402 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 55 remaining) [2024-11-28 03:01:51,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:01:51,402 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-28 03:01:51,408 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 03:01:51,409 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 03:01:51,535 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-11-28 03:01:51,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 277 transitions, 598 flow [2024-11-28 03:01:51,886 INFO L124 PetriNetUnfolderBase]: 161/839 cut-off events. [2024-11-28 03:01:51,888 INFO L125 PetriNetUnfolderBase]: For 72/79 co-relation queries the response was YES. [2024-11-28 03:01:51,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 839 events. 161/839 cut-off events. For 72/79 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 6217 event pairs, 1 based on Foata normal form. 0/499 useless extension candidates. Maximal degree in co-relation 520. Up to 32 conditions per place. [2024-11-28 03:01:51,897 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 277 transitions, 598 flow [2024-11-28 03:01:51,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 277 transitions, 598 flow [2024-11-28 03:01:51,915 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:01:51,919 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;@4a8531b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:01:51,920 INFO L334 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2024-11-28 03:01:51,922 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:01:51,922 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 03:01:51,922 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:01:51,923 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:01:51,926 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:01:51,926 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2024-11-28 03:01:51,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:51,927 INFO L85 PathProgramCache]: Analyzing trace with hash 918325, now seen corresponding path program 1 times [2024-11-28 03:01:51,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:51,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385012976] [2024-11-28 03:01:51,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:51,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:51,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:51,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:51,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385012976] [2024-11-28 03:01:51,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385012976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:51,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:01:51,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:01:51,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222515425] [2024-11-28 03:01:51,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:51,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:01:51,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:51,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:01:51,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:01:52,079 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 277 [2024-11-28 03:01:52,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 277 transitions, 598 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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) [2024-11-28 03:01:52,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:01:52,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 277 [2024-11-28 03:01:52,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand