./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.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_8c06b658-4609-40bf-8d31-97cd4beefeeb/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c06b658-4609-40bf-8d31-97cd4beefeeb/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_8c06b658-4609-40bf-8d31-97cd4beefeeb/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c06b658-4609-40bf-8d31-97cd4beefeeb/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c06b658-4609-40bf-8d31-97cd4beefeeb/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_8c06b658-4609-40bf-8d31-97cd4beefeeb/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 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:26:14,111 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:26:14,215 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c06b658-4609-40bf-8d31-97cd4beefeeb/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 03:26:14,220 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:26:14,221 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:26:14,249 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:26:14,250 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:26:14,250 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:26:14,254 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:26:14,254 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:26:14,254 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:26:14,254 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:26:14,255 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:26:14,255 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:26:14,255 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:26:14,255 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:26:14,255 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:26:14,255 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:26:14,255 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:26:14,255 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:26:14,256 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:26:14,256 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:26:14,256 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:26:14,256 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:26:14,256 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:26:14,256 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:26:14,256 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:26:14,256 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:26:14,256 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:26:14,257 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:26:14,260 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:26:14,261 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:26:14,261 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:26:14,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:26:14,261 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:26:14,261 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:26:14,261 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:26:14,261 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:26:14,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:26:14,262 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:26:14,262 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:26:14,262 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:26:14,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:26:14,262 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:26:14,262 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:26:14,262 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:26:14,262 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:26:14,263 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_8c06b658-4609-40bf-8d31-97cd4beefeeb/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 -> 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef [2024-11-28 03:26:14,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:26:14,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:26:14,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:26:14,702 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:26:14,704 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:26:14,705 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c06b658-4609-40bf-8d31-97cd4beefeeb/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2024-11-28 03:26:17,703 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c06b658-4609-40bf-8d31-97cd4beefeeb/bin/uautomizer-verify-aQ6SnzHsRB/data/dc9bba863/7fd955c35c814c83bdaf75f199169421/FLAG91e1096c4 [2024-11-28 03:26:18,094 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:26:18,094 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c06b658-4609-40bf-8d31-97cd4beefeeb/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2024-11-28 03:26:18,112 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c06b658-4609-40bf-8d31-97cd4beefeeb/bin/uautomizer-verify-aQ6SnzHsRB/data/dc9bba863/7fd955c35c814c83bdaf75f199169421/FLAG91e1096c4 [2024-11-28 03:26:18,134 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c06b658-4609-40bf-8d31-97cd4beefeeb/bin/uautomizer-verify-aQ6SnzHsRB/data/dc9bba863/7fd955c35c814c83bdaf75f199169421 [2024-11-28 03:26:18,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:26:18,138 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:26:18,140 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:26:18,140 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:26:18,145 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:26:18,146 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:26:18" (1/1) ... [2024-11-28 03:26:18,147 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2266d739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:18, skipping insertion in model container [2024-11-28 03:26:18,147 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:26:18" (1/1) ... [2024-11-28 03:26:18,184 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:26:18,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:26:18,746 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:26:18,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:26:18,913 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:26:18,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:18 WrapperNode [2024-11-28 03:26:18,915 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:26:18,916 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:26:18,916 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:26:18,916 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:26:18,924 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:18" (1/1) ... [2024-11-28 03:26:18,949 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:18" (1/1) ... [2024-11-28 03:26:18,974 INFO L138 Inliner]: procedures = 271, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 141 [2024-11-28 03:26:18,974 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:26:18,975 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:26:18,975 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:26:18,975 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:26:18,985 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:18" (1/1) ... [2024-11-28 03:26:18,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:18" (1/1) ... [2024-11-28 03:26:18,989 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:18" (1/1) ... [2024-11-28 03:26:19,007 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-11-28 03:26:19,007 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:18" (1/1) ... [2024-11-28 03:26:19,007 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:18" (1/1) ... [2024-11-28 03:26:19,030 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:18" (1/1) ... [2024-11-28 03:26:19,034 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:18" (1/1) ... [2024-11-28 03:26:19,038 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:18" (1/1) ... [2024-11-28 03:26:19,040 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:18" (1/1) ... [2024-11-28 03:26:19,041 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:18" (1/1) ... [2024-11-28 03:26:19,045 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:26:19,046 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:26:19,046 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:26:19,046 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:26:19,047 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:18" (1/1) ... [2024-11-28 03:26:19,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:26:19,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c06b658-4609-40bf-8d31-97cd4beefeeb/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:19,086 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c06b658-4609-40bf-8d31-97cd4beefeeb/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:26:19,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c06b658-4609-40bf-8d31-97cd4beefeeb/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:26:19,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:26:19,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:26:19,117 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 03:26:19,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:26:19,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:26:19,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:26:19,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 03:26:19,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:26:19,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:26:19,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 03:26:19,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 03:26:19,117 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 03:26:19,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:26:19,118 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-28 03:26:19,118 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-28 03:26:19,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:26:19,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:26:19,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:26:19,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 03:26:19,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:26:19,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:26:19,120 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 03:26:19,359 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:26:19,363 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:26:19,736 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:26:19,736 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:26:20,347 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:26:20,349 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 03:26:20,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:26:20 BoogieIcfgContainer [2024-11-28 03:26:20,350 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:26:20,352 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:26:20,352 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:26:20,358 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:26:20,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:26:18" (1/3) ... [2024-11-28 03:26:20,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651ccbaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:26:20, skipping insertion in model container [2024-11-28 03:26:20,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:18" (2/3) ... [2024-11-28 03:26:20,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651ccbaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:26:20, skipping insertion in model container [2024-11-28 03:26:20,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:26:20" (3/3) ... [2024-11-28 03:26:20,363 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2024-11-28 03:26:20,385 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:26:20,386 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_07-cond_racing2.i that has 2 procedures, 53 locations, 1 initial locations, 6 loop locations, and 6 error locations. [2024-11-28 03:26:20,387 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:26:20,450 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-28 03:26:20,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 67 transitions, 141 flow [2024-11-28 03:26:20,575 INFO L124 PetriNetUnfolderBase]: 21/105 cut-off events. [2024-11-28 03:26:20,580 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 03:26:20,586 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 03:26:20,587 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 67 transitions, 141 flow [2024-11-28 03:26:20,593 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 67 transitions, 141 flow [2024-11-28 03:26:20,609 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:26:20,633 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;@68832fe3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:26:20,633 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 03:26:20,646 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:26:20,646 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 03:26:20,646 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:26:20,646 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:20,647 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:26:20,648 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 03:26:20,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:20,654 INFO L85 PathProgramCache]: Analyzing trace with hash 473127, now seen corresponding path program 1 times [2024-11-28 03:26:20,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:20,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763387061] [2024-11-28 03:26:20,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:20,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:21,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:21,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:21,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763387061] [2024-11-28 03:26:21,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763387061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:21,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:21,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:26:21,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522700440] [2024-11-28 03:26:21,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:21,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:26:21,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:21,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:26:21,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:26:21,173 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 67 [2024-11-28 03:26:21,177 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 03:26:21,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:21,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 67 [2024-11-28 03:26:21,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:21,531 INFO L124 PetriNetUnfolderBase]: 179/511 cut-off events. [2024-11-28 03:26:21,531 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 03:26:21,533 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 03:26:21,541 INFO L140 encePairwiseOnDemand]: 53/67 looper letters, 35 selfloop transitions, 2 changer transitions 1/63 dead transitions. [2024-11-28 03:26:21,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 63 transitions, 209 flow [2024-11-28 03:26:21,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:26:21,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:26:21,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2024-11-28 03:26:21,567 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6517412935323383 [2024-11-28 03:26:21,569 INFO L175 Difference]: Start difference. First operand has 56 places, 67 transitions, 141 flow. Second operand 3 states and 131 transitions. [2024-11-28 03:26:21,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 63 transitions, 209 flow [2024-11-28 03:26:21,580 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 03:26:21,586 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 117 flow [2024-11-28 03:26:21,589 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 03:26:21,596 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-11-28 03:26:21,596 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 117 flow [2024-11-28 03:26:21,597 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 03:26:21,597 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:21,597 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:26:21,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:26:21,598 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 03:26:21,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:21,598 INFO L85 PathProgramCache]: Analyzing trace with hash 473128, now seen corresponding path program 1 times [2024-11-28 03:26:21,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:21,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144161261] [2024-11-28 03:26:21,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:21,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:22,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:22,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:22,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144161261] [2024-11-28 03:26:22,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144161261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:22,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:22,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:26:22,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977366839] [2024-11-28 03:26:22,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:22,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:26:22,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:22,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:26:22,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:26:22,035 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 67 [2024-11-28 03:26:22,035 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 03:26:22,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:22,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 67 [2024-11-28 03:26:22,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:22,226 INFO L124 PetriNetUnfolderBase]: 141/445 cut-off events. [2024-11-28 03:26:22,226 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-28 03:26:22,228 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 03:26:22,232 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 35 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-11-28 03:26:22,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 211 flow [2024-11-28 03:26:22,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:26:22,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:26:22,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-11-28 03:26:22,236 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6119402985074627 [2024-11-28 03:26:22,237 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 117 flow. Second operand 3 states and 123 transitions. [2024-11-28 03:26:22,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 211 flow [2024-11-28 03:26:22,238 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 03:26:22,241 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 123 flow [2024-11-28 03:26:22,242 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 03:26:22,242 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-11-28 03:26:22,243 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 123 flow [2024-11-28 03:26:22,243 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 03:26:22,243 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:22,243 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 03:26:22,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:26:22,244 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 03:26:22,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:22,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1129105869, now seen corresponding path program 1 times [2024-11-28 03:26:22,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:22,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995343062] [2024-11-28 03:26:22,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:22,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:22,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:22,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:22,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995343062] [2024-11-28 03:26:22,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995343062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:22,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:22,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:26:22,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194728929] [2024-11-28 03:26:22,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:22,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:26:22,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:22,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:26:22,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:26:22,709 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 67 [2024-11-28 03:26:22,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:22,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:22,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 67 [2024-11-28 03:26:22,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:22,965 INFO L124 PetriNetUnfolderBase]: 129/433 cut-off events. [2024-11-28 03:26:22,965 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-28 03:26:22,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 433 events. 129/433 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2317 event pairs, 8 based on Foata normal form. 10/400 useless extension candidates. Maximal degree in co-relation 687. Up to 195 conditions per place. [2024-11-28 03:26:22,973 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 42 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2024-11-28 03:26:22,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 71 transitions, 247 flow [2024-11-28 03:26:22,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:26:22,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:26:22,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-11-28 03:26:22,976 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5895522388059702 [2024-11-28 03:26:22,976 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 123 flow. Second operand 4 states and 158 transitions. [2024-11-28 03:26:22,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 71 transitions, 247 flow [2024-11-28 03:26:22,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 71 transitions, 243 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:26:22,982 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 121 flow [2024-11-28 03:26:22,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2024-11-28 03:26:22,983 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-11-28 03:26:22,984 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 121 flow [2024-11-28 03:26:22,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:22,985 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:22,985 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-28 03:26:22,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:26:22,985 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 03:26:22,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:22,986 INFO L85 PathProgramCache]: Analyzing trace with hash -642543121, now seen corresponding path program 1 times [2024-11-28 03:26:22,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:22,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676030778] [2024-11-28 03:26:22,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:22,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:26:23,063 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:26:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:26:23,138 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:26:23,138 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:26:23,140 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-28 03:26:23,143 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-28 03:26:23,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-28 03:26:23,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-28 03:26:23,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-28 03:26:23,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-28 03:26:23,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-28 03:26:23,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:26:23,149 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-28 03:26:23,152 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 03:26:23,154 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 03:26:23,200 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 03:26:23,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 92 transitions, 200 flow [2024-11-28 03:26:23,242 INFO L124 PetriNetUnfolderBase]: 36/180 cut-off events. [2024-11-28 03:26:23,242 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-28 03:26:23,245 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 03:26:23,245 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 92 transitions, 200 flow [2024-11-28 03:26:23,248 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 92 transitions, 200 flow [2024-11-28 03:26:23,250 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:26:23,254 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;@68832fe3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:26:23,254 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 03:26:23,263 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:26:23,263 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 03:26:23,263 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:26:23,263 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:23,263 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:26:23,264 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 03:26:23,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:23,264 INFO L85 PathProgramCache]: Analyzing trace with hash 564483, now seen corresponding path program 1 times [2024-11-28 03:26:23,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:23,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073938981] [2024-11-28 03:26:23,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:23,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:23,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:23,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:23,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073938981] [2024-11-28 03:26:23,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073938981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:23,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:23,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:26:23,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861856490] [2024-11-28 03:26:23,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:23,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:26:23,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:23,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:26:23,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:26:23,430 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 92 [2024-11-28 03:26:23,431 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 03:26:23,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:23,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 92 [2024-11-28 03:26:23,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:24,702 INFO L124 PetriNetUnfolderBase]: 3559/6891 cut-off events. [2024-11-28 03:26:24,703 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-28 03:26:24,722 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 03:26:24,756 INFO L140 encePairwiseOnDemand]: 72/92 looper letters, 55 selfloop transitions, 2 changer transitions 1/91 dead transitions. [2024-11-28 03:26:24,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 91 transitions, 314 flow [2024-11-28 03:26:24,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:26:24,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:26:24,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2024-11-28 03:26:24,762 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.677536231884058 [2024-11-28 03:26:24,763 INFO L175 Difference]: Start difference. First operand has 76 places, 92 transitions, 200 flow. Second operand 3 states and 187 transitions. [2024-11-28 03:26:24,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 91 transitions, 314 flow [2024-11-28 03:26:24,768 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 03:26:24,770 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 164 flow [2024-11-28 03:26:24,770 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 03:26:24,771 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, -1 predicate places. [2024-11-28 03:26:24,771 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 164 flow [2024-11-28 03:26:24,771 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 03:26:24,771 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:24,772 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:26:24,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:26:24,772 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 03:26:24,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:24,772 INFO L85 PathProgramCache]: Analyzing trace with hash 564484, now seen corresponding path program 1 times [2024-11-28 03:26:24,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:24,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088212459] [2024-11-28 03:26:24,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:24,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:24,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:24,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:24,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088212459] [2024-11-28 03:26:24,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088212459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:24,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:24,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:26:24,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140198712] [2024-11-28 03:26:24,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:24,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:26:24,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:24,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:26:24,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:26:24,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 92 [2024-11-28 03:26:24,937 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 03:26:24,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:24,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 92 [2024-11-28 03:26:24,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:25,719 INFO L124 PetriNetUnfolderBase]: 2998/6181 cut-off events. [2024-11-28 03:26:25,720 INFO L125 PetriNetUnfolderBase]: For 318/318 co-relation queries the response was YES. [2024-11-28 03:26:25,735 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 03:26:25,767 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 47 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-11-28 03:26:25,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 83 transitions, 284 flow [2024-11-28 03:26:25,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:26:25,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:26:25,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 159 transitions. [2024-11-28 03:26:25,770 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2024-11-28 03:26:25,770 INFO L175 Difference]: Start difference. First operand has 75 places, 72 transitions, 164 flow. Second operand 3 states and 159 transitions. [2024-11-28 03:26:25,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 83 transitions, 284 flow [2024-11-28 03:26:25,786 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 03:26:25,788 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 174 flow [2024-11-28 03:26:25,789 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 03:26:25,791 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, -1 predicate places. [2024-11-28 03:26:25,791 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 174 flow [2024-11-28 03:26:25,791 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 03:26:25,791 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:25,792 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 03:26:25,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:26:25,792 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 03:26:25,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:25,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1639217304, now seen corresponding path program 1 times [2024-11-28 03:26:25,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:25,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523558393] [2024-11-28 03:26:25,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:25,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:26,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:26,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:26,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523558393] [2024-11-28 03:26:26,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523558393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:26,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:26,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:26:26,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454563086] [2024-11-28 03:26:26,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:26,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:26:26,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:26,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:26:26,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:26:26,046 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 92 [2024-11-28 03:26:26,046 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 03:26:26,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:26,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 92 [2024-11-28 03:26:26,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:26,806 INFO L124 PetriNetUnfolderBase]: 3067/6202 cut-off events. [2024-11-28 03:26:26,806 INFO L125 PetriNetUnfolderBase]: For 403/403 co-relation queries the response was YES. [2024-11-28 03:26:26,822 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 03:26:26,849 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 65 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2024-11-28 03:26:26,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 103 transitions, 374 flow [2024-11-28 03:26:26,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:26:26,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:26:26,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2024-11-28 03:26:26,851 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5815217391304348 [2024-11-28 03:26:26,851 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 174 flow. Second operand 4 states and 214 transitions. [2024-11-28 03:26:26,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 103 transitions, 374 flow [2024-11-28 03:26:26,853 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 03:26:26,855 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 191 flow [2024-11-28 03:26:26,855 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 03:26:26,856 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2024-11-28 03:26:26,856 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 191 flow [2024-11-28 03:26:26,856 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 03:26:26,856 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:26,856 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-11-28 03:26:26,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:26:26,857 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 03:26:26,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:26,857 INFO L85 PathProgramCache]: Analyzing trace with hash 203480715, now seen corresponding path program 1 times [2024-11-28 03:26:26,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:26,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660941955] [2024-11-28 03:26:26,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:26,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:27,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:27,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:27,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660941955] [2024-11-28 03:26:27,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660941955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:27,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:27,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:26:27,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732147601] [2024-11-28 03:26:27,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:27,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:26:27,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:27,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:26:27,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:26:27,153 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 92 [2024-11-28 03:26:27,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 191 flow. Second operand has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:27,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:27,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 92 [2024-11-28 03:26:27,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:28,124 INFO L124 PetriNetUnfolderBase]: 3120/6045 cut-off events. [2024-11-28 03:26:28,124 INFO L125 PetriNetUnfolderBase]: For 919/919 co-relation queries the response was YES. [2024-11-28 03:26:28,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11484 conditions, 6045 events. 3120/6045 cut-off events. For 919/919 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 44617 event pairs, 1851 based on Foata normal form. 100/6032 useless extension candidates. Maximal degree in co-relation 7077. Up to 3705 conditions per place. [2024-11-28 03:26:28,165 INFO L140 encePairwiseOnDemand]: 87/92 looper letters, 101 selfloop transitions, 6 changer transitions 0/140 dead transitions. [2024-11-28 03:26:28,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 140 transitions, 533 flow [2024-11-28 03:26:28,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:26:28,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 03:26:28,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 318 transitions. [2024-11-28 03:26:28,169 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2024-11-28 03:26:28,169 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 191 flow. Second operand 6 states and 318 transitions. [2024-11-28 03:26:28,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 140 transitions, 533 flow [2024-11-28 03:26:28,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 140 transitions, 524 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-28 03:26:28,175 INFO L231 Difference]: Finished difference. Result has 81 places, 74 transitions, 195 flow [2024-11-28 03:26:28,175 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=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=195, PETRI_PLACES=81, PETRI_TRANSITIONS=74} [2024-11-28 03:26:28,176 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, 5 predicate places. [2024-11-28 03:26:28,176 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 74 transitions, 195 flow [2024-11-28 03:26:28,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:28,181 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:28,181 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-28 03:26:28,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:26:28,181 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 03:26:28,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:28,184 INFO L85 PathProgramCache]: Analyzing trace with hash 2012935434, now seen corresponding path program 1 times [2024-11-28 03:26:28,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:28,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788785745] [2024-11-28 03:26:28,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:28,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:26:28,222 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:26:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:26:28,243 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:26:28,243 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:26:28,243 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-28 03:26:28,243 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-28 03:26:28,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-28 03:26:28,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-28 03:26:28,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-28 03:26:28,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-28 03:26:28,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-28 03:26:28,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:26:28,244 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-28 03:26:28,245 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 03:26:28,245 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 03:26:28,274 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 03:26:28,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 117 transitions, 261 flow [2024-11-28 03:26:28,301 INFO L124 PetriNetUnfolderBase]: 54/276 cut-off events. [2024-11-28 03:26:28,301 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-28 03:26:28,303 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 03:26:28,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 117 transitions, 261 flow [2024-11-28 03:26:28,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 117 transitions, 261 flow [2024-11-28 03:26:28,306 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:26:28,307 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;@68832fe3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:26:28,307 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 03:26:28,309 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:26:28,309 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 03:26:28,309 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:26:28,309 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:28,310 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:26:28,310 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 03:26:28,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:28,310 INFO L85 PathProgramCache]: Analyzing trace with hash 680664, now seen corresponding path program 1 times [2024-11-28 03:26:28,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:28,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920866086] [2024-11-28 03:26:28,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:28,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:28,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:28,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:28,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920866086] [2024-11-28 03:26:28,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920866086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:28,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:28,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:26:28,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894120645] [2024-11-28 03:26:28,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:28,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:26:28,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:28,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:26:28,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:26:28,388 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 117 [2024-11-28 03:26:28,388 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 03:26:28,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:28,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 117 [2024-11-28 03:26:28,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:35,990 INFO L124 PetriNetUnfolderBase]: 53626/87325 cut-off events. [2024-11-28 03:26:35,990 INFO L125 PetriNetUnfolderBase]: For 1236/1236 co-relation queries the response was YES. [2024-11-28 03:26:36,135 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 03:26:36,476 INFO L140 encePairwiseOnDemand]: 91/117 looper letters, 75 selfloop transitions, 2 changer transitions 1/119 dead transitions. [2024-11-28 03:26:36,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 119 transitions, 421 flow [2024-11-28 03:26:36,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:26:36,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:26:36,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2024-11-28 03:26:36,478 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2024-11-28 03:26:36,478 INFO L175 Difference]: Start difference. First operand has 96 places, 117 transitions, 261 flow. Second operand 3 states and 243 transitions. [2024-11-28 03:26:36,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 119 transitions, 421 flow [2024-11-28 03:26:36,483 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 03:26:36,484 INFO L231 Difference]: Finished difference. Result has 95 places, 91 transitions, 213 flow [2024-11-28 03:26:36,485 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 03:26:36,486 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, -1 predicate places. [2024-11-28 03:26:36,488 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 91 transitions, 213 flow [2024-11-28 03:26:36,489 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 03:26:36,489 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:36,489 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:26:36,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:26:36,489 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 03:26:36,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:36,489 INFO L85 PathProgramCache]: Analyzing trace with hash 680665, now seen corresponding path program 1 times [2024-11-28 03:26:36,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:36,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560118405] [2024-11-28 03:26:36,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:36,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:36,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:36,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:36,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560118405] [2024-11-28 03:26:36,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560118405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:36,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:36,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:26:36,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537055574] [2024-11-28 03:26:36,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:36,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:26:36,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:36,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:26:36,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:26:36,624 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 117 [2024-11-28 03:26:36,625 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 03:26:36,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:36,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 117 [2024-11-28 03:26:36,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:42,345 INFO L124 PetriNetUnfolderBase]: 46695/77911 cut-off events. [2024-11-28 03:26:42,345 INFO L125 PetriNetUnfolderBase]: For 4252/4252 co-relation queries the response was YES. [2024-11-28 03:26:42,468 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 03:26:42,760 INFO L140 encePairwiseOnDemand]: 113/117 looper letters, 58 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2024-11-28 03:26:42,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 102 transitions, 355 flow [2024-11-28 03:26:42,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:26:42,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:26:42,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2024-11-28 03:26:42,762 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5527065527065527 [2024-11-28 03:26:42,763 INFO L175 Difference]: Start difference. First operand has 95 places, 91 transitions, 213 flow. Second operand 3 states and 194 transitions. [2024-11-28 03:26:42,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 102 transitions, 355 flow [2024-11-28 03:26:43,212 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 03:26:43,214 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 223 flow [2024-11-28 03:26:43,214 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 03:26:43,215 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, -1 predicate places. [2024-11-28 03:26:43,215 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 223 flow [2024-11-28 03:26:43,215 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 03:26:43,215 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:43,215 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 03:26:43,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:26:43,216 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 03:26:43,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:43,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1564915126, now seen corresponding path program 1 times [2024-11-28 03:26:43,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:43,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715467977] [2024-11-28 03:26:43,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:43,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:43,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:43,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:43,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715467977] [2024-11-28 03:26:43,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715467977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:43,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:43,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:26:43,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146043882] [2024-11-28 03:26:43,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:43,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:26:43,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:43,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:26:43,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:26:43,393 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 117 [2024-11-28 03:26:43,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:43,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:43,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 117 [2024-11-28 03:26:43,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:49,075 INFO L124 PetriNetUnfolderBase]: 46978/77592 cut-off events. [2024-11-28 03:26:49,075 INFO L125 PetriNetUnfolderBase]: For 4989/4989 co-relation queries the response was YES. [2024-11-28 03:26:49,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146410 conditions, 77592 events. 46978/77592 cut-off events. For 4989/4989 co-relation queries the response was YES. Maximal size of possible extension queue 2029. Compared 692105 event pairs, 40104 based on Foata normal form. 10/75627 useless extension candidates. Maximal degree in co-relation 131847. Up to 64104 conditions per place. [2024-11-28 03:26:49,517 INFO L140 encePairwiseOnDemand]: 113/117 looper letters, 77 selfloop transitions, 4 changer transitions 0/123 dead transitions. [2024-11-28 03:26:49,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 123 transitions, 451 flow [2024-11-28 03:26:49,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:26:49,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:26:49,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 258 transitions. [2024-11-28 03:26:49,522 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2024-11-28 03:26:49,522 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 223 flow. Second operand 4 states and 258 transitions. [2024-11-28 03:26:49,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 123 transitions, 451 flow [2024-11-28 03:26:49,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 123 transitions, 449 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:26:49,528 INFO L231 Difference]: Finished difference. Result has 98 places, 94 transitions, 246 flow [2024-11-28 03:26:49,528 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=98, PETRI_TRANSITIONS=94} [2024-11-28 03:26:49,531 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 2 predicate places. [2024-11-28 03:26:49,531 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 94 transitions, 246 flow [2024-11-28 03:26:49,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:49,532 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:49,532 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-11-28 03:26:49,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:26:49,532 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 03:26:49,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:49,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1278527090, now seen corresponding path program 1 times [2024-11-28 03:26:49,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:49,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860297637] [2024-11-28 03:26:49,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:49,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:49,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:49,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:49,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860297637] [2024-11-28 03:26:49,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860297637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:49,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:49,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:26:49,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697292199] [2024-11-28 03:26:49,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:49,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:26:49,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:49,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:26:49,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:26:49,861 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 117 [2024-11-28 03:26:49,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 94 transitions, 246 flow. Second operand has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:49,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:49,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 117 [2024-11-28 03:26:49,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:55,782 INFO L124 PetriNetUnfolderBase]: 47362/77087 cut-off events. [2024-11-28 03:26:55,782 INFO L125 PetriNetUnfolderBase]: For 11596/11596 co-relation queries the response was YES. [2024-11-28 03:26:55,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147626 conditions, 77087 events. 47362/77087 cut-off events. For 11596/11596 co-relation queries the response was YES. Maximal size of possible extension queue 2034. Compared 670513 event pairs, 31066 based on Foata normal form. 1100/76776 useless extension candidates. Maximal degree in co-relation 100471. Up to 49843 conditions per place. [2024-11-28 03:26:56,094 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 130 selfloop transitions, 7 changer transitions 0/178 dead transitions. [2024-11-28 03:26:56,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 178 transitions, 684 flow [2024-11-28 03:26:56,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:26:56,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 03:26:56,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 396 transitions. [2024-11-28 03:26:56,096 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2024-11-28 03:26:56,097 INFO L175 Difference]: Start difference. First operand has 98 places, 94 transitions, 246 flow. Second operand 6 states and 396 transitions. [2024-11-28 03:26:56,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 178 transitions, 684 flow [2024-11-28 03:26:56,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 178 transitions, 675 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-28 03:26:56,133 INFO L231 Difference]: Finished difference. Result has 101 places, 94 transitions, 253 flow [2024-11-28 03:26:56,134 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=253, PETRI_PLACES=101, PETRI_TRANSITIONS=94} [2024-11-28 03:26:56,134 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 5 predicate places. [2024-11-28 03:26:56,135 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 94 transitions, 253 flow [2024-11-28 03:26:56,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:56,135 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:56,135 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:56,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:26:56,135 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-28 03:26:56,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:56,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1160441566, now seen corresponding path program 1 times [2024-11-28 03:26:56,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:56,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340250504] [2024-11-28 03:26:56,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:56,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:56,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:56,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340250504] [2024-11-28 03:26:56,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340250504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:56,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:56,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:26:56,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512971689] [2024-11-28 03:26:56,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:56,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:26:56,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:56,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:26:56,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:26:56,250 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 117 [2024-11-28 03:26:56,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 94 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 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 03:26:56,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:56,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 117 [2024-11-28 03:26:56,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:27:01,589 INFO L124 PetriNetUnfolderBase]: 43951/73799 cut-off events. [2024-11-28 03:27:01,590 INFO L125 PetriNetUnfolderBase]: For 19749/19749 co-relation queries the response was YES. [2024-11-28 03:27:01,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144686 conditions, 73799 events. 43951/73799 cut-off events. For 19749/19749 co-relation queries the response was YES. Maximal size of possible extension queue 2038. Compared 673043 event pairs, 25995 based on Foata normal form. 10/71612 useless extension candidates. Maximal degree in co-relation 13319. Up to 59677 conditions per place. [2024-11-28 03:27:01,900 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 76 selfloop transitions, 3 changer transitions 0/121 dead transitions. [2024-11-28 03:27:01,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 121 transitions, 463 flow [2024-11-28 03:27:01,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:27:01,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:27:01,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 260 transitions. [2024-11-28 03:27:01,902 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-28 03:27:01,902 INFO L175 Difference]: Start difference. First operand has 101 places, 94 transitions, 253 flow. Second operand 4 states and 260 transitions. [2024-11-28 03:27:01,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 121 transitions, 463 flow [2024-11-28 03:27:01,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 121 transitions, 445 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-28 03:27:01,913 INFO L231 Difference]: Finished difference. Result has 99 places, 93 transitions, 235 flow [2024-11-28 03:27:01,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2024-11-28 03:27:01,914 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 3 predicate places. [2024-11-28 03:27:01,914 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 235 flow [2024-11-28 03:27:01,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 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 03:27:01,915 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:27:01,915 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-11-28 03:27:01,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 03:27:01,915 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-28 03:27:01,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:01,915 INFO L85 PathProgramCache]: Analyzing trace with hash -23255340, now seen corresponding path program 1 times [2024-11-28 03:27:01,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:01,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735674247] [2024-11-28 03:27:01,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:01,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:27:01,958 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:27:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:27:01,981 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:27:01,981 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:27:01,981 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-28 03:27:01,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-28 03:27:01,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-28 03:27:01,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-28 03:27:01,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-28 03:27:01,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-28 03:27:01,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-28 03:27:01,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:27:01,982 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-28 03:27:01,983 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 03:27:01,983 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-28 03:27:02,012 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-28 03:27:02,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 142 transitions, 324 flow [2024-11-28 03:27:02,047 INFO L124 PetriNetUnfolderBase]: 80/416 cut-off events. [2024-11-28 03:27:02,048 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-28 03:27:02,051 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 03:27:02,051 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 142 transitions, 324 flow [2024-11-28 03:27:02,054 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 142 transitions, 324 flow [2024-11-28 03:27:02,055 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:27:02,055 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;@68832fe3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:27:02,056 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 03:27:02,057 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:27:02,059 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 03:27:02,060 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:27:02,060 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:27:02,060 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:27:02,060 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 03:27:02,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:02,060 INFO L85 PathProgramCache]: Analyzing trace with hash 821670, now seen corresponding path program 1 times [2024-11-28 03:27:02,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:02,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296134309] [2024-11-28 03:27:02,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:02,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:02,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:02,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:02,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296134309] [2024-11-28 03:27:02,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296134309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:02,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:02,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:27:02,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493567078] [2024-11-28 03:27:02,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:02,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:27:02,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:02,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:27:02,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:27:02,136 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 142 [2024-11-28 03:27:02,137 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 03:27:02,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:27:02,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 142 [2024-11-28 03:27:02,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand