./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.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_436f54c9-551f-4b62-8790-18816127acc6/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f54c9-551f-4b62-8790-18816127acc6/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_436f54c9-551f-4b62-8790-18816127acc6/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f54c9-551f-4b62-8790-18816127acc6/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f54c9-551f-4b62-8790-18816127acc6/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_436f54c9-551f-4b62-8790-18816127acc6/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 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:25:56,725 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:25:56,836 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f54c9-551f-4b62-8790-18816127acc6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 02:25:56,842 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:25:56,842 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:25:56,868 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:25:56,868 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:25:56,869 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:25:56,869 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:25:56,869 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:25:56,869 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:25:56,869 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:25:56,870 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:25:56,870 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:25:56,870 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:25:56,870 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:25:56,870 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:25:56,870 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:25:56,871 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:25:56,871 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:25:56,871 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:25:56,871 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:25:56,871 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:25:56,871 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:25:56,871 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:25:56,872 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:25:56,872 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:25:56,872 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:25:56,872 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:25:56,872 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:25:56,872 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:25:56,872 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:25:56,872 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:25:56,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:25:56,873 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:25:56,873 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:25:56,873 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:25:56,873 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:25:56,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:25:56,874 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:25:56,874 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:25:56,874 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:25:56,874 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:25:56,874 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:25:56,874 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:25:56,875 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:25:56,875 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:25:56,875 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_436f54c9-551f-4b62-8790-18816127acc6/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 -> 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc [2024-11-28 02:25:57,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:25:57,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:25:57,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:25:57,264 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:25:57,265 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:25:57,266 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f54c9-551f-4b62-8790-18816127acc6/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i [2024-11-28 02:26:00,575 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f54c9-551f-4b62-8790-18816127acc6/bin/uautomizer-verify-aQ6SnzHsRB/data/78c5e5cac/6bae93306206468099dafd3231b5db83/FLAG8e618a1f2 [2024-11-28 02:26:00,956 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:26:00,957 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f54c9-551f-4b62-8790-18816127acc6/sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i [2024-11-28 02:26:00,989 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f54c9-551f-4b62-8790-18816127acc6/bin/uautomizer-verify-aQ6SnzHsRB/data/78c5e5cac/6bae93306206468099dafd3231b5db83/FLAG8e618a1f2 [2024-11-28 02:26:01,007 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f54c9-551f-4b62-8790-18816127acc6/bin/uautomizer-verify-aQ6SnzHsRB/data/78c5e5cac/6bae93306206468099dafd3231b5db83 [2024-11-28 02:26:01,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:26:01,011 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:26:01,013 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:26:01,013 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:26:01,017 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:26:01,018 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:26:01" (1/1) ... [2024-11-28 02:26:01,019 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bb598f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:01, skipping insertion in model container [2024-11-28 02:26:01,019 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:26:01" (1/1) ... [2024-11-28 02:26:01,064 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:26:01,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:26:01,709 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:26:01,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:26:01,905 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:26:01,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:01 WrapperNode [2024-11-28 02:26:01,907 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:26:01,908 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:26:01,908 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:26:01,908 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:26:01,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:01" (1/1) ... [2024-11-28 02:26:01,935 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:01" (1/1) ... [2024-11-28 02:26:01,962 INFO L138 Inliner]: procedures = 271, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 93 [2024-11-28 02:26:01,962 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:26:01,963 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:26:01,963 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:26:01,964 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:26:01,972 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:01" (1/1) ... [2024-11-28 02:26:01,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:01" (1/1) ... [2024-11-28 02:26:01,976 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:01" (1/1) ... [2024-11-28 02:26:01,993 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2024-11-28 02:26:01,993 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:01" (1/1) ... [2024-11-28 02:26:01,994 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:01" (1/1) ... [2024-11-28 02:26:02,004 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:01" (1/1) ... [2024-11-28 02:26:02,005 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:01" (1/1) ... [2024-11-28 02:26:02,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:01" (1/1) ... [2024-11-28 02:26:02,012 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:01" (1/1) ... [2024-11-28 02:26:02,014 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:01" (1/1) ... [2024-11-28 02:26:02,018 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:26:02,019 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:26:02,019 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:26:02,019 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:26:02,020 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:01" (1/1) ... [2024-11-28 02:26:02,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:26:02,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f54c9-551f-4b62-8790-18816127acc6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:26:02,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f54c9-551f-4b62-8790-18816127acc6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:26:02,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f54c9-551f-4b62-8790-18816127acc6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:26:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:26:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:26:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 02:26:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:26:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:26:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:26:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 02:26:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 02:26:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:26:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:26:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:26:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 02:26:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 02:26:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 02:26:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:26:02,093 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-28 02:26:02,093 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-28 02:26:02,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:26:02,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:26:02,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:26:02,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:26:02,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 02:26:02,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:26:02,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:26:02,095 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 02:26:02,258 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:26:02,260 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:26:02,629 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:26:02,629 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:26:02,874 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:26:02,875 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 02:26:02,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:26:02 BoogieIcfgContainer [2024-11-28 02:26:02,875 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:26:02,878 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:26:02,878 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:26:02,885 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:26:02,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:26:01" (1/3) ... [2024-11-28 02:26:02,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5488dfff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:26:02, skipping insertion in model container [2024-11-28 02:26:02,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:01" (2/3) ... [2024-11-28 02:26:02,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5488dfff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:26:02, skipping insertion in model container [2024-11-28 02:26:02,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:26:02" (3/3) ... [2024-11-28 02:26:02,888 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_06-cond_racing1.i [2024-11-28 02:26:02,906 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:26:02,908 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_06-cond_racing1.i that has 2 procedures, 53 locations, 1 initial locations, 6 loop locations, and 6 error locations. [2024-11-28 02:26:02,908 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:26:02,981 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-28 02:26:03,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 67 transitions, 141 flow [2024-11-28 02:26:03,094 INFO L124 PetriNetUnfolderBase]: 21/105 cut-off events. [2024-11-28 02:26:03,098 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 02:26:03,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 105 events. 21/105 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 380 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 62. Up to 6 conditions per place. [2024-11-28 02:26:03,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 67 transitions, 141 flow [2024-11-28 02:26:03,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 67 transitions, 141 flow [2024-11-28 02:26:03,119 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:26:03,133 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;@5641bceb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:26:03,133 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 02:26:03,140 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:26:03,140 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 02:26:03,140 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:26:03,140 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:26:03,141 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 02:26:03,141 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-28 02:26:03,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:03,148 INFO L85 PathProgramCache]: Analyzing trace with hash 373827, now seen corresponding path program 1 times [2024-11-28 02:26:03,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:03,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265274776] [2024-11-28 02:26:03,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:03,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:03,581 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 02:26:03,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:03,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265274776] [2024-11-28 02:26:03,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265274776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:03,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:03,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:26:03,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452115890] [2024-11-28 02:26:03,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:03,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:26:03,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:03,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:26:03,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:26:03,657 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 67 [2024-11-28 02:26:03,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 67 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 02:26:03,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:26:03,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 67 [2024-11-28 02:26:03,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:26:03,992 INFO L124 PetriNetUnfolderBase]: 179/511 cut-off events. [2024-11-28 02:26:03,995 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 02:26:03,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 511 events. 179/511 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2748 event pairs, 120 based on Foata normal form. 97/577 useless extension candidates. Maximal degree in co-relation 808. Up to 307 conditions per place. [2024-11-28 02:26:04,003 INFO L140 encePairwiseOnDemand]: 53/67 looper letters, 35 selfloop transitions, 2 changer transitions 1/63 dead transitions. [2024-11-28 02:26:04,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 63 transitions, 209 flow [2024-11-28 02:26:04,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:26:04,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:26:04,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2024-11-28 02:26:04,027 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6517412935323383 [2024-11-28 02:26:04,029 INFO L175 Difference]: Start difference. First operand has 56 places, 67 transitions, 141 flow. Second operand 3 states and 131 transitions. [2024-11-28 02:26:04,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 63 transitions, 209 flow [2024-11-28 02:26:04,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 209 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:26:04,043 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 117 flow [2024-11-28 02:26:04,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2024-11-28 02:26:04,052 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-11-28 02:26:04,053 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 117 flow [2024-11-28 02:26:04,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 02:26:04,053 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:26:04,054 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 02:26:04,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:26:04,054 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-28 02:26:04,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:04,056 INFO L85 PathProgramCache]: Analyzing trace with hash 373828, now seen corresponding path program 1 times [2024-11-28 02:26:04,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:04,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510633622] [2024-11-28 02:26:04,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:04,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:04,357 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 02:26:04,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:04,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510633622] [2024-11-28 02:26:04,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510633622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:04,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:04,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:26:04,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414154578] [2024-11-28 02:26:04,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:04,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:26:04,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:04,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:26:04,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:26:04,389 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 67 [2024-11-28 02:26:04,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 02:26:04,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:26:04,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 67 [2024-11-28 02:26:04,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:26:04,628 INFO L124 PetriNetUnfolderBase]: 141/445 cut-off events. [2024-11-28 02:26:04,628 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-28 02:26:04,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 445 events. 141/445 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2400 event pairs, 61 based on Foata normal form. 1/405 useless extension candidates. Maximal degree in co-relation 712. Up to 267 conditions per place. [2024-11-28 02:26:04,637 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 35 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-11-28 02:26:04,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 211 flow [2024-11-28 02:26:04,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:26:04,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:26:04,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-11-28 02:26:04,640 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6119402985074627 [2024-11-28 02:26:04,640 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 117 flow. Second operand 3 states and 123 transitions. [2024-11-28 02:26:04,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 211 flow [2024-11-28 02:26:04,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 63 transitions, 207 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:26:04,647 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 123 flow [2024-11-28 02:26:04,650 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2024-11-28 02:26:04,651 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-11-28 02:26:04,651 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 123 flow [2024-11-28 02:26:04,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 02:26:04,652 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:26:04,653 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 02:26:04,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:26:04,653 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-28 02:26:04,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:04,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1651460943, now seen corresponding path program 1 times [2024-11-28 02:26:04,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:04,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141431313] [2024-11-28 02:26:04,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:04,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:04,951 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 02:26:04,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:04,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141431313] [2024-11-28 02:26:04,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141431313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:04,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:04,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:26:04,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808440623] [2024-11-28 02:26:04,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:04,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:26:04,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:04,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:26:04,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:26:04,990 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 67 [2024-11-28 02:26:04,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 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 02:26:04,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:26:04,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 67 [2024-11-28 02:26:04,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:26:05,083 INFO L124 PetriNetUnfolderBase]: 27/96 cut-off events. [2024-11-28 02:26:05,083 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-28 02:26:05,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 96 events. 27/96 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 221 event pairs, 16 based on Foata normal form. 20/115 useless extension candidates. Maximal degree in co-relation 175. Up to 57 conditions per place. [2024-11-28 02:26:05,085 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 23 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2024-11-28 02:26:05,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 34 transitions, 128 flow [2024-11-28 02:26:05,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:26:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:26:05,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-28 02:26:05,087 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.503731343283582 [2024-11-28 02:26:05,087 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 123 flow. Second operand 4 states and 135 transitions. [2024-11-28 02:26:05,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 34 transitions, 128 flow [2024-11-28 02:26:05,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 34 transitions, 122 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:26:05,089 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 54 flow [2024-11-28 02:26:05,089 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2024-11-28 02:26:05,090 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -27 predicate places. [2024-11-28 02:26:05,090 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 54 flow [2024-11-28 02:26:05,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 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 02:26:05,090 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:26:05,090 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-28 02:26:05,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:26:05,091 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-28 02:26:05,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:05,092 INFO L85 PathProgramCache]: Analyzing trace with hash -344317969, now seen corresponding path program 1 times [2024-11-28 02:26:05,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:05,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830345732] [2024-11-28 02:26:05,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:05,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:26:05,115 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:26:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:26:05,159 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:26:05,159 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:26:05,163 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-28 02:26:05,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-28 02:26:05,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-28 02:26:05,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-28 02:26:05,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-28 02:26:05,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-28 02:26:05,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-28 02:26:05,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:26:05,169 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-28 02:26:05,175 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:26:05,175 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 02:26:05,207 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 02:26:05,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 92 transitions, 200 flow [2024-11-28 02:26:05,236 INFO L124 PetriNetUnfolderBase]: 36/180 cut-off events. [2024-11-28 02:26:05,236 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-28 02:26:05,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 180 events. 36/180 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 749 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 109. Up to 9 conditions per place. [2024-11-28 02:26:05,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 92 transitions, 200 flow [2024-11-28 02:26:05,239 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 92 transitions, 200 flow [2024-11-28 02:26:05,243 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:26:05,245 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;@5641bceb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:26:05,247 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 02:26:05,249 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:26:05,249 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 02:26:05,249 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:26:05,249 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:26:05,249 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 02:26:05,250 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-28 02:26:05,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:05,250 INFO L85 PathProgramCache]: Analyzing trace with hash 465183, now seen corresponding path program 1 times [2024-11-28 02:26:05,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:05,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033654743] [2024-11-28 02:26:05,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:05,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:05,339 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 02:26:05,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:05,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033654743] [2024-11-28 02:26:05,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033654743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:05,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:05,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:26:05,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136985611] [2024-11-28 02:26:05,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:05,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:26:05,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:05,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:26:05,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:26:05,358 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 92 [2024-11-28 02:26:05,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 92 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:05,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:26:05,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 92 [2024-11-28 02:26:05,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:26:06,484 INFO L124 PetriNetUnfolderBase]: 3559/6891 cut-off events. [2024-11-28 02:26:06,485 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-28 02:26:06,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12422 conditions, 6891 events. 3559/6891 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 52261 event pairs, 2735 based on Foata normal form. 1720/8316 useless extension candidates. Maximal degree in co-relation 9137. Up to 4731 conditions per place. [2024-11-28 02:26:06,529 INFO L140 encePairwiseOnDemand]: 72/92 looper letters, 55 selfloop transitions, 2 changer transitions 1/91 dead transitions. [2024-11-28 02:26:06,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 91 transitions, 314 flow [2024-11-28 02:26:06,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:26:06,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:26:06,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2024-11-28 02:26:06,533 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.677536231884058 [2024-11-28 02:26:06,535 INFO L175 Difference]: Start difference. First operand has 76 places, 92 transitions, 200 flow. Second operand 3 states and 187 transitions. [2024-11-28 02:26:06,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 91 transitions, 314 flow [2024-11-28 02:26:06,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 91 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:26:06,541 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 164 flow [2024-11-28 02:26:06,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=75, PETRI_TRANSITIONS=72} [2024-11-28 02:26:06,542 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, -1 predicate places. [2024-11-28 02:26:06,542 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 164 flow [2024-11-28 02:26:06,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:06,542 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:26:06,544 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 02:26:06,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:26:06,545 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-28 02:26:06,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:06,546 INFO L85 PathProgramCache]: Analyzing trace with hash 465184, now seen corresponding path program 1 times [2024-11-28 02:26:06,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:06,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512871506] [2024-11-28 02:26:06,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:06,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:06,683 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 02:26:06,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:06,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512871506] [2024-11-28 02:26:06,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512871506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:06,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:06,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:26:06,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261678264] [2024-11-28 02:26:06,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:06,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:26:06,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:06,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:26:06,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:26:06,705 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 92 [2024-11-28 02:26:06,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 72 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 02:26:06,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:26:06,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 92 [2024-11-28 02:26:06,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:26:07,571 INFO L124 PetriNetUnfolderBase]: 2998/6181 cut-off events. [2024-11-28 02:26:07,571 INFO L125 PetriNetUnfolderBase]: For 318/318 co-relation queries the response was YES. [2024-11-28 02:26:07,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11022 conditions, 6181 events. 2998/6181 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 49125 event pairs, 1227 based on Foata normal form. 1/5827 useless extension candidates. Maximal degree in co-relation 9944. Up to 4562 conditions per place. [2024-11-28 02:26:07,614 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 47 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-11-28 02:26:07,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 83 transitions, 284 flow [2024-11-28 02:26:07,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:26:07,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:26:07,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 159 transitions. [2024-11-28 02:26:07,618 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2024-11-28 02:26:07,618 INFO L175 Difference]: Start difference. First operand has 75 places, 72 transitions, 164 flow. Second operand 3 states and 159 transitions. [2024-11-28 02:26:07,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 83 transitions, 284 flow [2024-11-28 02:26:07,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 83 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:26:07,632 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 174 flow [2024-11-28 02:26:07,632 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2024-11-28 02:26:07,634 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, -1 predicate places. [2024-11-28 02:26:07,636 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 174 flow [2024-11-28 02:26:07,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 02:26:07,636 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:26:07,637 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 02:26:07,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:26:07,637 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-28 02:26:07,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:07,638 INFO L85 PathProgramCache]: Analyzing trace with hash 124816820, now seen corresponding path program 1 times [2024-11-28 02:26:07,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:07,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222637980] [2024-11-28 02:26:07,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:07,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:07,797 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 02:26:07,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:07,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222637980] [2024-11-28 02:26:07,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222637980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:07,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:07,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:26:07,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154608253] [2024-11-28 02:26:07,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:07,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:26:07,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:07,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:26:07,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:26:07,828 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 92 [2024-11-28 02:26:07,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 02:26:07,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:26:07,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 92 [2024-11-28 02:26:07,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:26:08,650 INFO L124 PetriNetUnfolderBase]: 3067/6202 cut-off events. [2024-11-28 02:26:08,651 INFO L125 PetriNetUnfolderBase]: For 403/403 co-relation queries the response was YES. [2024-11-28 02:26:08,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11304 conditions, 6202 events. 3067/6202 cut-off events. For 403/403 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 48229 event pairs, 1177 based on Foata normal form. 10/6030 useless extension candidates. Maximal degree in co-relation 1136. Up to 4453 conditions per place. [2024-11-28 02:26:08,697 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 65 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2024-11-28 02:26:08,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 103 transitions, 374 flow [2024-11-28 02:26:08,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:26:08,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:26:08,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2024-11-28 02:26:08,700 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5815217391304348 [2024-11-28 02:26:08,700 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 174 flow. Second operand 4 states and 214 transitions. [2024-11-28 02:26:08,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 103 transitions, 374 flow [2024-11-28 02:26:08,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 103 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:26:08,705 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 191 flow [2024-11-28 02:26:08,705 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2024-11-28 02:26:08,707 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2024-11-28 02:26:08,708 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 191 flow [2024-11-28 02:26:08,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 02:26:08,708 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:26:08,709 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-11-28 02:26:08,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:26:08,709 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-28 02:26:08,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:08,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1658450777, now seen corresponding path program 1 times [2024-11-28 02:26:08,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:08,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862260206] [2024-11-28 02:26:08,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:08,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:08,924 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 02:26:08,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:08,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862260206] [2024-11-28 02:26:08,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862260206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:08,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:08,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:26:08,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199133273] [2024-11-28 02:26:08,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:08,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:26:08,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:08,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:26:08,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:26:08,988 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 92 [2024-11-28 02:26:08,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 191 flow. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 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 02:26:08,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:26:08,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 92 [2024-11-28 02:26:08,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:26:10,013 INFO L124 PetriNetUnfolderBase]: 2931/5744 cut-off events. [2024-11-28 02:26:10,013 INFO L125 PetriNetUnfolderBase]: For 930/930 co-relation queries the response was YES. [2024-11-28 02:26:10,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10883 conditions, 5744 events. 2931/5744 cut-off events. For 930/930 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 42475 event pairs, 1851 based on Foata normal form. 100/5711 useless extension candidates. Maximal degree in co-relation 7015. Up to 3705 conditions per place. [2024-11-28 02:26:10,054 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 81 selfloop transitions, 5 changer transitions 0/120 dead transitions. [2024-11-28 02:26:10,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 120 transitions, 451 flow [2024-11-28 02:26:10,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:26:10,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:26:10,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 267 transitions. [2024-11-28 02:26:10,057 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5804347826086956 [2024-11-28 02:26:10,057 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 191 flow. Second operand 5 states and 267 transitions. [2024-11-28 02:26:10,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 120 transitions, 451 flow [2024-11-28 02:26:10,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 120 transitions, 442 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-28 02:26:10,064 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 186 flow [2024-11-28 02:26:10,064 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2024-11-28 02:26:10,065 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2024-11-28 02:26:10,065 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 186 flow [2024-11-28 02:26:10,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 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 02:26:10,066 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:26:10,066 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-28 02:26:10,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:26:10,066 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-28 02:26:10,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:10,067 INFO L85 PathProgramCache]: Analyzing trace with hash 127633930, now seen corresponding path program 1 times [2024-11-28 02:26:10,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:10,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354020738] [2024-11-28 02:26:10,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:10,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:26:10,094 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:26:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:26:10,119 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:26:10,120 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:26:10,120 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-28 02:26:10,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-28 02:26:10,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-28 02:26:10,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-28 02:26:10,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-28 02:26:10,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-28 02:26:10,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-28 02:26:10,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:26:10,122 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-28 02:26:10,125 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:26:10,125 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 02:26:10,170 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 02:26:10,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 117 transitions, 261 flow [2024-11-28 02:26:10,205 INFO L124 PetriNetUnfolderBase]: 54/276 cut-off events. [2024-11-28 02:26:10,205 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-28 02:26:10,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 276 events. 54/276 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1238 event pairs, 1 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 191. Up to 12 conditions per place. [2024-11-28 02:26:10,207 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 117 transitions, 261 flow [2024-11-28 02:26:10,210 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 117 transitions, 261 flow [2024-11-28 02:26:10,211 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:26:10,212 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;@5641bceb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:26:10,212 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 02:26:10,214 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:26:10,214 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 02:26:10,215 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:26:10,215 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:26:10,215 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 02:26:10,215 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-28 02:26:10,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:10,216 INFO L85 PathProgramCache]: Analyzing trace with hash 581364, now seen corresponding path program 1 times [2024-11-28 02:26:10,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:10,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878911932] [2024-11-28 02:26:10,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:10,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:10,262 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 02:26:10,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:10,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878911932] [2024-11-28 02:26:10,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878911932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:10,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:10,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:26:10,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113290481] [2024-11-28 02:26:10,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:10,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:26:10,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:10,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:26:10,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:26:10,280 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 117 [2024-11-28 02:26:10,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 117 transitions, 261 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) [2024-11-28 02:26:10,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:26:10,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 117 [2024-11-28 02:26:10,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:26:18,395 INFO L124 PetriNetUnfolderBase]: 53626/87325 cut-off events. [2024-11-28 02:26:18,395 INFO L125 PetriNetUnfolderBase]: For 1236/1236 co-relation queries the response was YES. [2024-11-28 02:26:18,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161738 conditions, 87325 events. 53626/87325 cut-off events. For 1236/1236 co-relation queries the response was YES. Maximal size of possible extension queue 2347. Compared 782049 event pairs, 43458 based on Foata normal form. 25258/109403 useless extension candidates. Maximal degree in co-relation 58750. Up to 63282 conditions per place. [2024-11-28 02:26:18,875 INFO L140 encePairwiseOnDemand]: 91/117 looper letters, 75 selfloop transitions, 2 changer transitions 1/119 dead transitions. [2024-11-28 02:26:18,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 119 transitions, 421 flow [2024-11-28 02:26:18,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:26:18,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:26:18,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2024-11-28 02:26:18,877 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2024-11-28 02:26:18,878 INFO L175 Difference]: Start difference. First operand has 96 places, 117 transitions, 261 flow. Second operand 3 states and 243 transitions. [2024-11-28 02:26:18,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 119 transitions, 421 flow [2024-11-28 02:26:18,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 119 transitions, 421 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:26:18,886 INFO L231 Difference]: Finished difference. Result has 95 places, 91 transitions, 213 flow [2024-11-28 02:26:18,887 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=95, PETRI_TRANSITIONS=91} [2024-11-28 02:26:18,889 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, -1 predicate places. [2024-11-28 02:26:18,890 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 91 transitions, 213 flow [2024-11-28 02:26:18,890 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) [2024-11-28 02:26:18,890 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:26:18,890 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 02:26:18,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:26:18,891 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-28 02:26:18,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:18,892 INFO L85 PathProgramCache]: Analyzing trace with hash 581365, now seen corresponding path program 1 times [2024-11-28 02:26:18,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:18,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995343062] [2024-11-28 02:26:18,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:18,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:18,999 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 02:26:19,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:19,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995343062] [2024-11-28 02:26:19,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995343062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:19,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:19,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:26:19,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223603862] [2024-11-28 02:26:19,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:19,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:26:19,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:19,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:26:19,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:26:19,020 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 117 [2024-11-28 02:26:19,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 91 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 02:26:19,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:26:19,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 117 [2024-11-28 02:26:19,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:26:25,156 INFO L124 PetriNetUnfolderBase]: 46695/77911 cut-off events. [2024-11-28 02:26:25,157 INFO L125 PetriNetUnfolderBase]: For 4252/4252 co-relation queries the response was YES. [2024-11-28 02:26:25,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145198 conditions, 77911 events. 46695/77911 cut-off events. For 4252/4252 co-relation queries the response was YES. Maximal size of possible extension queue 2097. Compared 708932 event pairs, 27954 based on Foata normal form. 1/74614 useless extension candidates. Maximal degree in co-relation 130511. Up to 63779 conditions per place. [2024-11-28 02:26:25,656 INFO L140 encePairwiseOnDemand]: 113/117 looper letters, 58 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2024-11-28 02:26:25,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 102 transitions, 355 flow [2024-11-28 02:26:25,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:26:25,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:26:25,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2024-11-28 02:26:25,659 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5527065527065527 [2024-11-28 02:26:25,659 INFO L175 Difference]: Start difference. First operand has 95 places, 91 transitions, 213 flow. Second operand 3 states and 194 transitions. [2024-11-28 02:26:25,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 102 transitions, 355 flow [2024-11-28 02:26:26,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 102 transitions, 351 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:26:26,329 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 223 flow [2024-11-28 02:26:26,330 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2024-11-28 02:26:26,330 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, -1 predicate places. [2024-11-28 02:26:26,331 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 223 flow [2024-11-28 02:26:26,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 02:26:26,331 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:26:26,331 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 02:26:26,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:26:26,332 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-28 02:26:26,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:26,332 INFO L85 PathProgramCache]: Analyzing trace with hash 50514642, now seen corresponding path program 1 times [2024-11-28 02:26:26,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:26,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194728929] [2024-11-28 02:26:26,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:26,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:26,503 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 02:26:26,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:26,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194728929] [2024-11-28 02:26:26,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194728929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:26,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:26,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:26:26,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690852241] [2024-11-28 02:26:26,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:26,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:26:26,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:26,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:26:26,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:26:26,559 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 117 [2024-11-28 02:26:26,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 223 flow. Second operand has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:26,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:26:26,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 117 [2024-11-28 02:26:26,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:26:32,916 INFO L124 PetriNetUnfolderBase]: 47136/76933 cut-off events. [2024-11-28 02:26:32,916 INFO L125 PetriNetUnfolderBase]: For 4178/4178 co-relation queries the response was YES. [2024-11-28 02:26:33,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144638 conditions, 76933 events. 47136/76933 cut-off events. For 4178/4178 co-relation queries the response was YES. Maximal size of possible extension queue 2091. Compared 677865 event pairs, 25585 based on Foata normal form. 1120/76226 useless extension candidates. Maximal degree in co-relation 130057. Up to 49353 conditions per place. [2024-11-28 02:26:33,213 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 111 selfloop transitions, 5 changer transitions 0/157 dead transitions. [2024-11-28 02:26:33,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 157 transitions, 583 flow [2024-11-28 02:26:33,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:26:33,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:26:33,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 333 transitions. [2024-11-28 02:26:33,215 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5692307692307692 [2024-11-28 02:26:33,215 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 223 flow. Second operand 5 states and 333 transitions. [2024-11-28 02:26:33,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 157 transitions, 583 flow [2024-11-28 02:26:33,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 157 transitions, 581 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:26:33,222 INFO L231 Difference]: Finished difference. Result has 98 places, 92 transitions, 234 flow [2024-11-28 02:26:33,222 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=234, PETRI_PLACES=98, PETRI_TRANSITIONS=92} [2024-11-28 02:26:33,223 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 2 predicate places. [2024-11-28 02:26:33,223 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 92 transitions, 234 flow [2024-11-28 02:26:33,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:33,224 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:26:33,224 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-11-28 02:26:33,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:26:33,224 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-28 02:26:33,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:33,225 INFO L85 PathProgramCache]: Analyzing trace with hash -239320364, now seen corresponding path program 1 times [2024-11-28 02:26:33,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:33,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584114990] [2024-11-28 02:26:33,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:33,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:26:33,248 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:26:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:26:33,266 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:26:33,266 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:26:33,266 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-28 02:26:33,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-28 02:26:33,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-28 02:26:33,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-28 02:26:33,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-28 02:26:33,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-28 02:26:33,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-28 02:26:33,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:26:33,267 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-28 02:26:33,268 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:26:33,268 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-28 02:26:33,297 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-28 02:26:33,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 142 transitions, 324 flow [2024-11-28 02:26:33,328 INFO L124 PetriNetUnfolderBase]: 80/416 cut-off events. [2024-11-28 02:26:33,329 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-28 02:26:33,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 416 events. 80/416 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2022 event pairs, 6 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 300. Up to 32 conditions per place. [2024-11-28 02:26:33,331 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 142 transitions, 324 flow [2024-11-28 02:26:33,333 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 142 transitions, 324 flow [2024-11-28 02:26:33,334 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:26:33,335 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;@5641bceb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:26:33,335 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 02:26:33,336 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:26:33,336 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 02:26:33,336 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:26:33,336 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:26:33,336 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 02:26:33,336 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-28 02:26:33,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:33,337 INFO L85 PathProgramCache]: Analyzing trace with hash 722370, now seen corresponding path program 1 times [2024-11-28 02:26:33,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:33,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439528249] [2024-11-28 02:26:33,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:33,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:33,367 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 02:26:33,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:33,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439528249] [2024-11-28 02:26:33,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439528249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:33,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:33,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:26:33,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115125258] [2024-11-28 02:26:33,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:33,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:26:33,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:33,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:26:33,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:26:33,381 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 142 [2024-11-28 02:26:33,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 142 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 02:26:33,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:26:33,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 142 [2024-11-28 02:26:33,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand