./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2a1c7e-b6e3-4eae-8f1c-2205785e3177/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2a1c7e-b6e3-4eae-8f1c-2205785e3177/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2a1c7e-b6e3-4eae-8f1c-2205785e3177/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2a1c7e-b6e3-4eae-8f1c-2205785e3177/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2a1c7e-b6e3-4eae-8f1c-2205785e3177/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2a1c7e-b6e3-4eae-8f1c-2205785e3177/bin/uautomizer-verify-qhAvR1uOyd --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 44a70169ef8abd67c211072db1308f16df00422231dd8f14aa88bc39d0b023bb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:33:44,647 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:33:44,743 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2a1c7e-b6e3-4eae-8f1c-2205785e3177/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 14:33:44,748 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:33:44,748 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:33:44,767 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:33:44,768 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:33:44,768 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:33:44,769 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:33:44,769 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:33:44,769 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:33:44,769 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:33:44,769 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:33:44,770 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:33:44,770 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:33:44,770 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:33:44,770 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:33:44,770 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:33:44,770 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:33:44,771 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:33:44,771 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 14:33:44,771 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 14:33:44,771 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 14:33:44,771 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:33:44,771 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:33:44,771 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:33:44,772 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:33:44,772 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:33:44,772 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:33:44,772 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:33:44,772 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:33:44,772 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:33:44,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:33:44,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:33:44,773 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:33:44,773 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:33:44,773 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:33:44,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:33:44,773 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:33:44,773 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:33:44,773 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:33:44,774 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:33:44,774 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_7b2a1c7e-b6e3-4eae-8f1c-2205785e3177/bin/uautomizer-verify-qhAvR1uOyd 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 -> 44a70169ef8abd67c211072db1308f16df00422231dd8f14aa88bc39d0b023bb [2024-11-13 14:33:45,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:33:45,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:33:45,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:33:45,058 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:33:45,058 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:33:45,059 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2a1c7e-b6e3-4eae-8f1c-2205785e3177/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i Unable to find full path for "g++" [2024-11-13 14:33:46,989 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:33:47,307 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:33:47,308 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2a1c7e-b6e3-4eae-8f1c-2205785e3177/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i [2024-11-13 14:33:47,329 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2a1c7e-b6e3-4eae-8f1c-2205785e3177/bin/uautomizer-verify-qhAvR1uOyd/data/3d91c0826/c6043e31fb4d49d7a824d1a0135a76b7/FLAG8b0998e03 [2024-11-13 14:33:47,574 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2a1c7e-b6e3-4eae-8f1c-2205785e3177/bin/uautomizer-verify-qhAvR1uOyd/data/3d91c0826/c6043e31fb4d49d7a824d1a0135a76b7 [2024-11-13 14:33:47,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:33:47,581 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:33:47,582 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:33:47,583 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:33:47,588 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:33:47,589 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:33:47" (1/1) ... [2024-11-13 14:33:47,590 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@566468b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:33:47, skipping insertion in model container [2024-11-13 14:33:47,592 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:33:47" (1/1) ... [2024-11-13 14:33:47,645 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:33:48,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:33:48,061 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:33:48,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:33:48,135 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:33:48,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:33:48 WrapperNode [2024-11-13 14:33:48,135 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:33:48,136 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:33:48,136 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:33:48,137 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:33:48,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:33:48" (1/1) ... [2024-11-13 14:33:48,157 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:33:48" (1/1) ... [2024-11-13 14:33:48,191 INFO L138 Inliner]: procedures = 167, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 81 [2024-11-13 14:33:48,192 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:33:48,192 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:33:48,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:33:48,193 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:33:48,200 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:33:48" (1/1) ... [2024-11-13 14:33:48,201 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:33:48" (1/1) ... [2024-11-13 14:33:48,203 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:33:48" (1/1) ... [2024-11-13 14:33:48,217 INFO L175 MemorySlicer]: Split 17 memory accesses to 3 slices as follows [2, 8, 7]. 47 percent of accesses are in the largest equivalence class. The 16 initializations are split as follows [2, 8, 6]. The 0 writes are split as follows [0, 0, 0]. [2024-11-13 14:33:48,217 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:33:48" (1/1) ... [2024-11-13 14:33:48,218 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:33:48" (1/1) ... [2024-11-13 14:33:48,224 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:33:48" (1/1) ... [2024-11-13 14:33:48,228 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:33:48" (1/1) ... [2024-11-13 14:33:48,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:33:48" (1/1) ... [2024-11-13 14:33:48,230 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:33:48" (1/1) ... [2024-11-13 14:33:48,232 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:33:48,233 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:33:48,233 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:33:48,233 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:33:48,234 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:33:48" (1/1) ... [2024-11-13 14:33:48,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:33:48,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2a1c7e-b6e3-4eae-8f1c-2205785e3177/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:33:48,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2a1c7e-b6e3-4eae-8f1c-2205785e3177/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:33:48,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2a1c7e-b6e3-4eae-8f1c-2205785e3177/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:33:48,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:33:48,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:33:48,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 14:33:48,298 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-13 14:33:48,298 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-13 14:33:48,299 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 14:33:48,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:33:48,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 14:33:48,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 14:33:48,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 14:33:48,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:33:48,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:33:48,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 14:33:48,299 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 14:33:48,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:33:48,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:33:48,301 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 14:33:48,471 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:33:48,473 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:33:48,751 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 14:33:48,752 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:33:48,946 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:33:48,947 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 14:33:48,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:33:48 BoogieIcfgContainer [2024-11-13 14:33:48,947 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:33:48,952 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:33:48,952 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:33:48,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:33:48,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:33:47" (1/3) ... [2024-11-13 14:33:48,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744a56de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:33:48, skipping insertion in model container [2024-11-13 14:33:48,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:33:48" (2/3) ... [2024-11-13 14:33:48,960 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744a56de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:33:48, skipping insertion in model container [2024-11-13 14:33:48,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:33:48" (3/3) ... [2024-11-13 14:33:48,961 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-zero.i [2024-11-13 14:33:48,977 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:33:48,978 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 11_fmaxsymopt-zero.i that has 2 procedures, 25 locations, 1 initial locations, 2 loop locations, and 4 error locations. [2024-11-13 14:33:48,978 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 14:33:49,039 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 14:33:49,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 29 transitions, 62 flow [2024-11-13 14:33:49,118 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2024-11-13 14:33:49,121 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:33:49,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 33 events. 4/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 63 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-11-13 14:33:49,125 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 29 transitions, 62 flow [2024-11-13 14:33:49,128 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 29 transitions, 62 flow [2024-11-13 14:33:49,136 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:33:49,152 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;@3cd0f9b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:33:49,152 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-13 14:33:49,161 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:33:49,161 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 14:33:49,162 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:33:49,162 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:33:49,162 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 14:33:49,163 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-13 14:33:49,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:33:49,171 INFO L85 PathProgramCache]: Analyzing trace with hash 271940, now seen corresponding path program 1 times [2024-11-13 14:33:49,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:33:49,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22792035] [2024-11-13 14:33:49,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:33:49,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:33:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:33:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:33:49,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:33:49,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22792035] [2024-11-13 14:33:49,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22792035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:33:49,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:33:49,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:33:49,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128775818] [2024-11-13 14:33:49,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:33:49,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:33:49,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:33:49,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:33:49,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:33:49,452 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-13 14:33:49,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 29 transitions, 62 flow. Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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) [2024-11-13 14:33:49,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:33:49,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-13 14:33:49,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:33:49,528 INFO L124 PetriNetUnfolderBase]: 18/68 cut-off events. [2024-11-13 14:33:49,529 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:33:49,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 68 events. 18/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 182 event pairs, 14 based on Foata normal form. 6/69 useless extension candidates. Maximal degree in co-relation 102. Up to 44 conditions per place. [2024-11-13 14:33:49,533 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 12 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2024-11-13 14:33:49,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 23 transitions, 74 flow [2024-11-13 14:33:49,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:33:49,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 14:33:49,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 39 transitions. [2024-11-13 14:33:49,547 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6724137931034483 [2024-11-13 14:33:49,550 INFO L175 Difference]: Start difference. First operand has 28 places, 29 transitions, 62 flow. Second operand 2 states and 39 transitions. [2024-11-13 14:33:49,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 23 transitions, 74 flow [2024-11-13 14:33:49,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 74 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:33:49,562 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 50 flow [2024-11-13 14:33:49,566 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=50, PETRI_PLACES=25, PETRI_TRANSITIONS=23} [2024-11-13 14:33:49,572 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, -3 predicate places. [2024-11-13 14:33:49,573 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 50 flow [2024-11-13 14:33:49,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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) [2024-11-13 14:33:49,574 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:33:49,574 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-13 14:33:49,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:33:49,575 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-13 14:33:49,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:33:49,576 INFO L85 PathProgramCache]: Analyzing trace with hash -487893517, now seen corresponding path program 1 times [2024-11-13 14:33:49,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:33:49,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560827438] [2024-11-13 14:33:49,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:33:49,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:33:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:33:49,632 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:33:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:33:49,685 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:33:49,685 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:33:49,687 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-11-13 14:33:49,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2024-11-13 14:33:49,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2024-11-13 14:33:49,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (4 of 8 remaining) [2024-11-13 14:33:49,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2024-11-13 14:33:49,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2024-11-13 14:33:49,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 8 remaining) [2024-11-13 14:33:49,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-11-13 14:33:49,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:33:49,691 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 14:33:49,694 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 14:33:49,694 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-13 14:33:49,731 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 14:33:49,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 51 transitions, 112 flow [2024-11-13 14:33:49,748 INFO L124 PetriNetUnfolderBase]: 8/60 cut-off events. [2024-11-13 14:33:49,749 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 14:33:49,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 60 events. 8/60 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 167 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 47. Up to 3 conditions per place. [2024-11-13 14:33:49,750 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 51 transitions, 112 flow [2024-11-13 14:33:49,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 51 transitions, 112 flow [2024-11-13 14:33:49,752 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:33:49,753 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;@3cd0f9b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:33:49,753 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-13 14:33:49,755 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:33:49,756 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 14:33:49,756 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:33:49,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:33:49,756 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 14:33:49,756 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2024-11-13 14:33:49,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:33:49,757 INFO L85 PathProgramCache]: Analyzing trace with hash 322583, now seen corresponding path program 1 times [2024-11-13 14:33:49,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:33:49,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571293512] [2024-11-13 14:33:49,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:33:49,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:33:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:33:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:33:49,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:33:49,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571293512] [2024-11-13 14:33:49,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571293512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:33:49,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:33:49,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:33:49,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828666794] [2024-11-13 14:33:49,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:33:49,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:33:49,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:33:49,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:33:49,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:33:49,788 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-11-13 14:33:49,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 51 transitions, 112 flow. Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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) [2024-11-13 14:33:49,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:33:49,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-11-13 14:33:49,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:33:50,012 INFO L124 PetriNetUnfolderBase]: 361/865 cut-off events. [2024-11-13 14:33:50,012 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-13 14:33:50,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1458 conditions, 865 events. 361/865 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5173 event pairs, 294 based on Foata normal form. 140/940 useless extension candidates. Maximal degree in co-relation 778. Up to 564 conditions per place. [2024-11-13 14:33:50,021 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 21 selfloop transitions, 0 changer transitions 0/42 dead transitions. [2024-11-13 14:33:50,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 136 flow [2024-11-13 14:33:50,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:33:50,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 14:33:50,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 70 transitions. [2024-11-13 14:33:50,023 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6862745098039216 [2024-11-13 14:33:50,023 INFO L175 Difference]: Start difference. First operand has 48 places, 51 transitions, 112 flow. Second operand 2 states and 70 transitions. [2024-11-13 14:33:50,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 136 flow [2024-11-13 14:33:50,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 136 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:33:50,025 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 94 flow [2024-11-13 14:33:50,025 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2024-11-13 14:33:50,026 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -4 predicate places. [2024-11-13 14:33:50,026 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 94 flow [2024-11-13 14:33:50,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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) [2024-11-13 14:33:50,026 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:33:50,026 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 14:33:50,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:33:50,027 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2024-11-13 14:33:50,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:33:50,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1021526824, now seen corresponding path program 1 times [2024-11-13 14:33:50,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:33:50,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895861044] [2024-11-13 14:33:50,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:33:50,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:33:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:33:50,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:33:50,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:33:50,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895861044] [2024-11-13 14:33:50,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895861044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:33:50,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:33:50,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 14:33:50,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674818331] [2024-11-13 14:33:50,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:33:50,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:33:50,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:33:50,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:33:50,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:33:50,216 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 51 [2024-11-13 14:33:50,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-11-13 14:33:50,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:33:50,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 51 [2024-11-13 14:33:50,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:33:50,436 INFO L124 PetriNetUnfolderBase]: 361/849 cut-off events. [2024-11-13 14:33:50,436 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-13 14:33:50,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1443 conditions, 849 events. 361/849 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4984 event pairs, 294 based on Foata normal form. 0/800 useless extension candidates. Maximal degree in co-relation 1438. Up to 563 conditions per place. [2024-11-13 14:33:50,446 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 20 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2024-11-13 14:33:50,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 132 flow [2024-11-13 14:33:50,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:33:50,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:33:50,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-11-13 14:33:50,449 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5424836601307189 [2024-11-13 14:33:50,450 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 94 flow. Second operand 3 states and 83 transitions. [2024-11-13 14:33:50,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 132 flow [2024-11-13 14:33:50,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 132 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:33:50,452 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 92 flow [2024-11-13 14:33:50,453 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2024-11-13 14:33:50,454 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -4 predicate places. [2024-11-13 14:33:50,455 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 92 flow [2024-11-13 14:33:50,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-11-13 14:33:50,456 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:33:50,456 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 14:33:50,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:33:50,456 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2024-11-13 14:33:50,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:33:50,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1021526825, now seen corresponding path program 1 times [2024-11-13 14:33:50,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:33:50,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405558053] [2024-11-13 14:33:50,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:33:50,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:33:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:33:50,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:33:50,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:33:50,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405558053] [2024-11-13 14:33:50,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405558053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:33:50,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:33:50,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:33:50,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357155350] [2024-11-13 14:33:50,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:33:50,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:33:50,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:33:50,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:33:50,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:33:50,805 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-11-13 14:33:50,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 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) [2024-11-13 14:33:50,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:33:50,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-11-13 14:33:50,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:33:51,171 INFO L124 PetriNetUnfolderBase]: 477/1311 cut-off events. [2024-11-13 14:33:51,172 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-13 14:33:51,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2126 conditions, 1311 events. 477/1311 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 9387 event pairs, 258 based on Foata normal form. 27/1262 useless extension candidates. Maximal degree in co-relation 2120. Up to 563 conditions per place. [2024-11-13 14:33:51,180 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 41 selfloop transitions, 5 changer transitions 0/64 dead transitions. [2024-11-13 14:33:51,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 242 flow [2024-11-13 14:33:51,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:33:51,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 14:33:51,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-11-13 14:33:51,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-13 14:33:51,182 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 92 flow. Second operand 5 states and 153 transitions. [2024-11-13 14:33:51,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 64 transitions, 242 flow [2024-11-13 14:33:51,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 64 transitions, 241 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:33:51,185 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 118 flow [2024-11-13 14:33:51,185 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-11-13 14:33:51,186 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 1 predicate places. [2024-11-13 14:33:51,186 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 118 flow [2024-11-13 14:33:51,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 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) [2024-11-13 14:33:51,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:33:51,187 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-13 14:33:51,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:33:51,187 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2024-11-13 14:33:51,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:33:51,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1317108217, now seen corresponding path program 1 times [2024-11-13 14:33:51,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:33:51,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16450454] [2024-11-13 14:33:51,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:33:51,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:33:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:33:51,200 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:33:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:33:51,212 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:33:51,213 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:33:51,213 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-11-13 14:33:51,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2024-11-13 14:33:51,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2024-11-13 14:33:51,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (7 of 11 remaining) [2024-11-13 14:33:51,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 11 remaining) [2024-11-13 14:33:51,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2024-11-13 14:33:51,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 11 remaining) [2024-11-13 14:33:51,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2024-11-13 14:33:51,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 11 remaining) [2024-11-13 14:33:51,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 11 remaining) [2024-11-13 14:33:51,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (0 of 11 remaining) [2024-11-13 14:33:51,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:33:51,215 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-13 14:33:51,215 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 14:33:51,215 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-13 14:33:51,268 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 14:33:51,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 73 transitions, 164 flow [2024-11-13 14:33:51,280 INFO L124 PetriNetUnfolderBase]: 12/87 cut-off events. [2024-11-13 14:33:51,280 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-13 14:33:51,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 87 events. 12/87 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 293 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2024-11-13 14:33:51,281 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 73 transitions, 164 flow [2024-11-13 14:33:51,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 73 transitions, 164 flow [2024-11-13 14:33:51,284 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:33:51,288 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;@3cd0f9b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:33:51,288 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-13 14:33:51,290 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:33:51,290 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 14:33:51,290 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:33:51,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:33:51,290 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 14:33:51,290 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 11 more)] === [2024-11-13 14:33:51,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:33:51,292 INFO L85 PathProgramCache]: Analyzing trace with hash 395072, now seen corresponding path program 1 times [2024-11-13 14:33:51,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:33:51,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757898820] [2024-11-13 14:33:51,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:33:51,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:33:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:33:51,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:33:51,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:33:51,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757898820] [2024-11-13 14:33:51,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757898820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:33:51,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:33:51,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:33:51,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806066078] [2024-11-13 14:33:51,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:33:51,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:33:51,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:33:51,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:33:51,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:33:51,315 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 73 [2024-11-13 14:33:51,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 73 transitions, 164 flow. Second operand has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2024-11-13 14:33:51,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:33:51,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 73 [2024-11-13 14:33:51,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:33:52,488 INFO L124 PetriNetUnfolderBase]: 4643/8805 cut-off events. [2024-11-13 14:33:52,488 INFO L125 PetriNetUnfolderBase]: For 490/490 co-relation queries the response was YES. [2024-11-13 14:33:52,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15351 conditions, 8805 events. 4643/8805 cut-off events. For 490/490 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 69408 event pairs, 3878 based on Foata normal form. 1869/10115 useless extension candidates. Maximal degree in co-relation 1471. Up to 6260 conditions per place. [2024-11-13 14:33:52,560 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 30 selfloop transitions, 0 changer transitions 0/61 dead transitions. [2024-11-13 14:33:52,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 200 flow [2024-11-13 14:33:52,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:33:52,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 14:33:52,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 101 transitions. [2024-11-13 14:33:52,563 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6917808219178082 [2024-11-13 14:33:52,563 INFO L175 Difference]: Start difference. First operand has 68 places, 73 transitions, 164 flow. Second operand 2 states and 101 transitions. [2024-11-13 14:33:52,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 200 flow [2024-11-13 14:33:52,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 198 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-13 14:33:52,566 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 138 flow [2024-11-13 14:33:52,567 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=138, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2024-11-13 14:33:52,567 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2024-11-13 14:33:52,567 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 138 flow [2024-11-13 14:33:52,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2024-11-13 14:33:52,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:33:52,568 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 14:33:52,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:33:52,568 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 11 more)] === [2024-11-13 14:33:52,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:33:52,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1113222573, now seen corresponding path program 1 times [2024-11-13 14:33:52,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:33:52,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955298278] [2024-11-13 14:33:52,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:33:52,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:33:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:33:52,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:33:52,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:33:52,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955298278] [2024-11-13 14:33:52,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955298278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:33:52,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:33:52,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 14:33:52,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791025444] [2024-11-13 14:33:52,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:33:52,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:33:52,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:33:52,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:33:52,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:33:52,741 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 73 [2024-11-13 14:33:52,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2024-11-13 14:33:52,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:33:52,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 73 [2024-11-13 14:33:52,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:33:53,780 INFO L124 PetriNetUnfolderBase]: 4643/8667 cut-off events. [2024-11-13 14:33:53,780 INFO L125 PetriNetUnfolderBase]: For 302/302 co-relation queries the response was YES. [2024-11-13 14:33:53,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15150 conditions, 8667 events. 4643/8667 cut-off events. For 302/302 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 66987 event pairs, 3878 based on Foata normal form. 0/8246 useless extension candidates. Maximal degree in co-relation 15144. Up to 6259 conditions per place. [2024-11-13 14:33:53,864 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 29 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2024-11-13 14:33:53,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 192 flow [2024-11-13 14:33:53,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:33:53,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:33:53,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-11-13 14:33:53,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2024-11-13 14:33:53,866 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 138 flow. Second operand 3 states and 120 transitions. [2024-11-13 14:33:53,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 192 flow [2024-11-13 14:33:53,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:33:53,871 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 134 flow [2024-11-13 14:33:53,872 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-13 14:33:53,874 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2024-11-13 14:33:53,874 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 134 flow [2024-11-13 14:33:53,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2024-11-13 14:33:53,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:33:53,875 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 14:33:53,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:33:53,875 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 11 more)] === [2024-11-13 14:33:53,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:33:53,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1113222572, now seen corresponding path program 1 times [2024-11-13 14:33:53,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:33:53,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992277337] [2024-11-13 14:33:53,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:33:53,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:33:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:33:54,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:33:54,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:33:54,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992277337] [2024-11-13 14:33:54,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992277337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:33:54,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:33:54,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:33:54,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066071548] [2024-11-13 14:33:54,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:33:54,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:33:54,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:33:54,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:33:54,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:33:54,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-11-13 14:33:54,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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) [2024-11-13 14:33:54,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:33:54,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-11-13 14:33:54,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:33:55,677 INFO L124 PetriNetUnfolderBase]: 6278/13277 cut-off events. [2024-11-13 14:33:55,677 INFO L125 PetriNetUnfolderBase]: For 337/337 co-relation queries the response was YES. [2024-11-13 14:33:55,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22189 conditions, 13277 events. 6278/13277 cut-off events. For 337/337 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 123617 event pairs, 3878 based on Foata normal form. 219/12737 useless extension candidates. Maximal degree in co-relation 22182. Up to 6259 conditions per place. [2024-11-13 14:33:55,761 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 68 selfloop transitions, 5 changer transitions 0/100 dead transitions. [2024-11-13 14:33:55,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 100 transitions, 384 flow [2024-11-13 14:33:55,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:33:55,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 14:33:55,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 230 transitions. [2024-11-13 14:33:55,764 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6301369863013698 [2024-11-13 14:33:55,764 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 134 flow. Second operand 5 states and 230 transitions. [2024-11-13 14:33:55,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 100 transitions, 384 flow [2024-11-13 14:33:55,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 100 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:33:55,769 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 160 flow [2024-11-13 14:33:55,769 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2024-11-13 14:33:55,769 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2024-11-13 14:33:55,769 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 160 flow [2024-11-13 14:33:55,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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) [2024-11-13 14:33:55,770 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:33:55,770 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:33:55,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:33:55,770 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 11 more)] === [2024-11-13 14:33:55,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:33:55,771 INFO L85 PathProgramCache]: Analyzing trace with hash 579331469, now seen corresponding path program 1 times [2024-11-13 14:33:55,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:33:55,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32799610] [2024-11-13 14:33:55,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:33:55,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:33:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:33:55,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:33:55,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:33:55,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32799610] [2024-11-13 14:33:55,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32799610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:33:55,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:33:55,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:33:55,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576541994] [2024-11-13 14:33:55,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:33:55,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:33:55,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:33:55,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:33:55,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:33:56,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-11-13 14:33:56,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 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) [2024-11-13 14:33:56,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:33:56,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-11-13 14:33:56,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:33:57,927 INFO L124 PetriNetUnfolderBase]: 7752/16493 cut-off events. [2024-11-13 14:33:57,927 INFO L125 PetriNetUnfolderBase]: For 3947/4223 co-relation queries the response was YES. [2024-11-13 14:33:57,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30311 conditions, 16493 events. 7752/16493 cut-off events. For 3947/4223 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 158281 event pairs, 4542 based on Foata normal form. 270/15878 useless extension candidates. Maximal degree in co-relation 30302. Up to 7823 conditions per place. [2024-11-13 14:33:58,073 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 72 selfloop transitions, 5 changer transitions 0/104 dead transitions. [2024-11-13 14:33:58,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 104 transitions, 448 flow [2024-11-13 14:33:58,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:33:58,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 14:33:58,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 228 transitions. [2024-11-13 14:33:58,075 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6246575342465753 [2024-11-13 14:33:58,076 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 160 flow. Second operand 5 states and 228 transitions. [2024-11-13 14:33:58,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 104 transitions, 448 flow [2024-11-13 14:33:58,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 104 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:33:58,084 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 186 flow [2024-11-13 14:33:58,084 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2024-11-13 14:33:58,084 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 4 predicate places. [2024-11-13 14:33:58,088 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 186 flow [2024-11-13 14:33:58,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 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) [2024-11-13 14:33:58,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:33:58,089 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:33:58,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 14:33:58,089 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 11 more)] === [2024-11-13 14:33:58,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:33:58,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1724246016, now seen corresponding path program 1 times [2024-11-13 14:33:58,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:33:58,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822967884] [2024-11-13 14:33:58,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:33:58,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:33:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:33:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:33:58,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:33:58,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822967884] [2024-11-13 14:33:58,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822967884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:33:58,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204923126] [2024-11-13 14:33:58,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:33:58,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:33:58,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2a1c7e-b6e3-4eae-8f1c-2205785e3177/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:33:58,466 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2a1c7e-b6e3-4eae-8f1c-2205785e3177/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:33:58,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2a1c7e-b6e3-4eae-8f1c-2205785e3177/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:33:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:33:58,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 14:33:58,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:33:58,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:33:58,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:33:59,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:33:59,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204923126] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:33:59,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:33:59,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2024-11-13 14:33:59,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014736900] [2024-11-13 14:33:59,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:33:59,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 14:33:59,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:33:59,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 14:33:59,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:33:59,334 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-11-13 14:33:59,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 186 flow. Second operand has 12 states, 12 states have (on average 32.75) internal successors, (393), 12 states have internal predecessors, (393), 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) [2024-11-13 14:33:59,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:33:59,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-11-13 14:33:59,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:34:01,931 INFO L124 PetriNetUnfolderBase]: 12234/26327 cut-off events. [2024-11-13 14:34:01,931 INFO L125 PetriNetUnfolderBase]: For 8650/8923 co-relation queries the response was YES. [2024-11-13 14:34:02,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51827 conditions, 26327 events. 12234/26327 cut-off events. For 8650/8923 co-relation queries the response was YES. Maximal size of possible extension queue 1124. Compared 271017 event pairs, 4233 based on Foata normal form. 273/25535 useless extension candidates. Maximal degree in co-relation 51816. Up to 8084 conditions per place. [2024-11-13 14:34:02,104 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 101 selfloop transitions, 7 changer transitions 0/135 dead transitions. [2024-11-13 14:34:02,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 135 transitions, 640 flow [2024-11-13 14:34:02,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:34:02,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 14:34:02,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 287 transitions. [2024-11-13 14:34:02,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6552511415525114 [2024-11-13 14:34:02,106 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 186 flow. Second operand 6 states and 287 transitions. [2024-11-13 14:34:02,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 135 transitions, 640 flow [2024-11-13 14:34:02,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 135 transitions, 639 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:34:02,120 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 226 flow [2024-11-13 14:34:02,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-11-13 14:34:02,123 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 10 predicate places. [2024-11-13 14:34:02,123 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 226 flow [2024-11-13 14:34:02,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 32.75) internal successors, (393), 12 states have internal predecessors, (393), 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) [2024-11-13 14:34:02,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:34:02,125 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:34:02,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2a1c7e-b6e3-4eae-8f1c-2205785e3177/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:34:02,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2a1c7e-b6e3-4eae-8f1c-2205785e3177/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 14:34:02,326 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 11 more)] === [2024-11-13 14:34:02,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:34:02,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1911998491, now seen corresponding path program 1 times [2024-11-13 14:34:02,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:34:02,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247341232] [2024-11-13 14:34:02,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:34:02,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:34:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:34:02,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:34:02,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:34:02,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247341232] [2024-11-13 14:34:02,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247341232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:34:02,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:34:02,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:34:02,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555810421] [2024-11-13 14:34:02,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:34:02,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:34:02,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:34:02,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:34:02,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:34:02,394 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-11-13 14:34:02,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2024-11-13 14:34:02,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:34:02,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-11-13 14:34:02,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:34:04,543 INFO L124 PetriNetUnfolderBase]: 11549/21259 cut-off events. [2024-11-13 14:34:04,544 INFO L125 PetriNetUnfolderBase]: For 11284/11659 co-relation queries the response was YES. [2024-11-13 14:34:04,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48993 conditions, 21259 events. 11549/21259 cut-off events. For 11284/11659 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 185157 event pairs, 1666 based on Foata normal form. 819/21361 useless extension candidates. Maximal degree in co-relation 48980. Up to 12961 conditions per place. [2024-11-13 14:34:04,699 INFO L140 encePairwiseOnDemand]: 70/73 looper letters, 56 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2024-11-13 14:34:04,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 86 transitions, 414 flow [2024-11-13 14:34:04,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:34:04,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:34:04,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-11-13 14:34:04,700 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6621004566210046 [2024-11-13 14:34:04,700 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 226 flow. Second operand 3 states and 145 transitions. [2024-11-13 14:34:04,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 86 transitions, 414 flow [2024-11-13 14:34:04,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 86 transitions, 411 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:34:04,716 INFO L231 Difference]: Finished difference. Result has 78 places, 64 transitions, 227 flow [2024-11-13 14:34:04,716 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2024-11-13 14:34:04,717 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 10 predicate places. [2024-11-13 14:34:04,717 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 227 flow [2024-11-13 14:34:04,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2024-11-13 14:34:04,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:34:04,718 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-13 14:34:04,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 14:34:04,718 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 11 more)] === [2024-11-13 14:34:04,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:34:04,718 INFO L85 PathProgramCache]: Analyzing trace with hash -80549358, now seen corresponding path program 1 times [2024-11-13 14:34:04,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:34:04,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467290693] [2024-11-13 14:34:04,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:34:04,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:34:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:34:04,731 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:34:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:34:04,745 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:34:04,747 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:34:04,747 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-11-13 14:34:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2024-11-13 14:34:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2024-11-13 14:34:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (10 of 14 remaining) [2024-11-13 14:34:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (9 of 14 remaining) [2024-11-13 14:34:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2024-11-13 14:34:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2024-11-13 14:34:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (6 of 14 remaining) [2024-11-13 14:34:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2024-11-13 14:34:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2024-11-13 14:34:04,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (3 of 14 remaining) [2024-11-13 14:34:04,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2024-11-13 14:34:04,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2024-11-13 14:34:04,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (0 of 14 remaining) [2024-11-13 14:34:04,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 14:34:04,749 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:34:04,750 WARN L247 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 14:34:04,750 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-13 14:34:04,799 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 14:34:04,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 95 transitions, 218 flow [2024-11-13 14:34:04,814 INFO L124 PetriNetUnfolderBase]: 16/114 cut-off events. [2024-11-13 14:34:04,814 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-13 14:34:04,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 114 events. 16/114 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 409 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 99. Up to 5 conditions per place. [2024-11-13 14:34:04,815 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 95 transitions, 218 flow [2024-11-13 14:34:04,816 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 95 transitions, 218 flow [2024-11-13 14:34:04,820 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:34:04,820 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;@3cd0f9b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:34:04,820 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-13 14:34:04,821 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:34:04,821 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 14:34:04,821 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:34:04,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:34:04,821 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 14:34:04,821 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2024-11-13 14:34:04,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:34:04,822 INFO L85 PathProgramCache]: Analyzing trace with hash 489407, now seen corresponding path program 1 times [2024-11-13 14:34:04,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:34:04,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176116649] [2024-11-13 14:34:04,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:34:04,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:34:04,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:34:04,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:34:04,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:34:04,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176116649] [2024-11-13 14:34:04,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176116649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:34:04,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:34:04,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:34:04,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702134157] [2024-11-13 14:34:04,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:34:04,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:34:04,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:34:04,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:34:04,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:34:04,838 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 95 [2024-11-13 14:34:04,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 95 transitions, 218 flow. Second operand has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 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) [2024-11-13 14:34:04,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:34:04,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 95 [2024-11-13 14:34:04,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:34:11,583 INFO L124 PetriNetUnfolderBase]: 51169/84541 cut-off events. [2024-11-13 14:34:11,584 INFO L125 PetriNetUnfolderBase]: For 6918/6918 co-relation queries the response was YES. [2024-11-13 14:34:12,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151504 conditions, 84541 events. 51169/84541 cut-off events. For 6918/6918 co-relation queries the response was YES. Maximal size of possible extension queue 3512. Compared 774306 event pairs, 43302 based on Foata normal form. 21913/101952 useless extension candidates. Maximal degree in co-relation 15419. Up to 64116 conditions per place. [2024-11-13 14:34:12,404 INFO L140 encePairwiseOnDemand]: 86/95 looper letters, 39 selfloop transitions, 0 changer transitions 0/80 dead transitions. [2024-11-13 14:34:12,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 80 transitions, 266 flow [2024-11-13 14:34:12,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:34:12,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 14:34:12,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 132 transitions. [2024-11-13 14:34:12,406 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6947368421052632 [2024-11-13 14:34:12,406 INFO L175 Difference]: Start difference. First operand has 88 places, 95 transitions, 218 flow. Second operand 2 states and 132 transitions. [2024-11-13 14:34:12,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 80 transitions, 266 flow [2024-11-13 14:34:12,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 80 transitions, 260 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-13 14:34:12,413 INFO L231 Difference]: Finished difference. Result has 82 places, 80 transitions, 182 flow [2024-11-13 14:34:12,416 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=182, PETRI_PLACES=82, PETRI_TRANSITIONS=80} [2024-11-13 14:34:12,417 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, -6 predicate places. [2024-11-13 14:34:12,417 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 80 transitions, 182 flow [2024-11-13 14:34:12,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 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) [2024-11-13 14:34:12,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:34:12,417 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 14:34:12,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 14:34:12,417 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2024-11-13 14:34:12,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:34:12,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1697852211, now seen corresponding path program 1 times [2024-11-13 14:34:12,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:34:12,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060634698] [2024-11-13 14:34:12,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:34:12,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:34:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:34:12,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:34:12,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:34:12,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060634698] [2024-11-13 14:34:12,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060634698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:34:12,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:34:12,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 14:34:12,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064735168] [2024-11-13 14:34:12,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:34:12,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:34:12,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:34:12,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:34:12,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:34:12,515 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 95 [2024-11-13 14:34:12,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2024-11-13 14:34:12,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:34:12,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 95 [2024-11-13 14:34:12,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:34:18,913 INFO L124 PetriNetUnfolderBase]: 51169/83445 cut-off events. [2024-11-13 14:34:18,913 INFO L125 PetriNetUnfolderBase]: For 3210/3210 co-relation queries the response was YES. [2024-11-13 14:34:19,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149321 conditions, 83445 events. 51169/83445 cut-off events. For 3210/3210 co-relation queries the response was YES. Maximal size of possible extension queue 3435. Compared 748570 event pairs, 43302 based on Foata normal form. 0/80039 useless extension candidates. Maximal degree in co-relation 149314. Up to 64115 conditions per place. [2024-11-13 14:34:19,374 INFO L140 encePairwiseOnDemand]: 90/95 looper letters, 38 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2024-11-13 14:34:19,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 252 flow [2024-11-13 14:34:19,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:34:19,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:34:19,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2024-11-13 14:34:19,375 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5508771929824562 [2024-11-13 14:34:19,375 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 182 flow. Second operand 3 states and 157 transitions. [2024-11-13 14:34:19,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 252 flow [2024-11-13 14:34:19,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 76 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:34:19,383 INFO L231 Difference]: Finished difference. Result has 80 places, 76 transitions, 176 flow [2024-11-13 14:34:19,383 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=80, PETRI_TRANSITIONS=76} [2024-11-13 14:34:19,384 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, -8 predicate places. [2024-11-13 14:34:19,384 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 76 transitions, 176 flow [2024-11-13 14:34:19,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2024-11-13 14:34:19,384 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:34:19,384 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 14:34:19,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 14:34:19,384 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2024-11-13 14:34:19,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:34:19,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1697852212, now seen corresponding path program 1 times [2024-11-13 14:34:19,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:34:19,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165963199] [2024-11-13 14:34:19,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:34:19,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:34:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:34:19,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:34:19,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:34:19,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165963199] [2024-11-13 14:34:19,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165963199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:34:19,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:34:19,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:34:19,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610148898] [2024-11-13 14:34:19,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:34:19,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:34:19,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:34:19,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:34:19,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:34:19,878 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 95 [2024-11-13 14:34:19,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 76 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 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) [2024-11-13 14:34:19,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:34:19,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 95 [2024-11-13 14:34:19,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:34:30,225 INFO L124 PetriNetUnfolderBase]: 68988/124720 cut-off events. [2024-11-13 14:34:30,225 INFO L125 PetriNetUnfolderBase]: For 3901/3901 co-relation queries the response was YES. [2024-11-13 14:34:30,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215297 conditions, 124720 events. 68988/124720 cut-off events. For 3901/3901 co-relation queries the response was YES. Maximal size of possible extension queue 5083. Compared 1337883 event pairs, 36054 based on Foata normal form. 1755/120612 useless extension candidates. Maximal degree in co-relation 215289. Up to 64115 conditions per place. [2024-11-13 14:34:30,976 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 95 selfloop transitions, 5 changer transitions 0/136 dead transitions. [2024-11-13 14:34:30,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 136 transitions, 526 flow [2024-11-13 14:34:30,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:34:30,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 14:34:30,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 307 transitions. [2024-11-13 14:34:30,978 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6463157894736842 [2024-11-13 14:34:30,978 INFO L175 Difference]: Start difference. First operand has 80 places, 76 transitions, 176 flow. Second operand 5 states and 307 transitions. [2024-11-13 14:34:30,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 136 transitions, 526 flow [2024-11-13 14:34:30,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 136 transitions, 525 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:34:30,989 INFO L231 Difference]: Finished difference. Result has 85 places, 78 transitions, 202 flow [2024-11-13 14:34:30,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=202, PETRI_PLACES=85, PETRI_TRANSITIONS=78} [2024-11-13 14:34:30,990 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, -3 predicate places. [2024-11-13 14:34:30,990 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 78 transitions, 202 flow [2024-11-13 14:34:30,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 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) [2024-11-13 14:34:30,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:34:30,991 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:34:30,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 14:34:30,991 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (and 14 more)] === [2024-11-13 14:34:30,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:34:30,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1415393281, now seen corresponding path program 1 times [2024-11-13 14:34:30,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:34:30,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146420137] [2024-11-13 14:34:30,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:34:30,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:34:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:34:31,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:34:31,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:34:31,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146420137] [2024-11-13 14:34:31,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146420137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:34:31,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:34:31,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:34:31,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922883584] [2024-11-13 14:34:31,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:34:31,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:34:31,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:34:31,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:34:31,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:34:31,216 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 95 [2024-11-13 14:34:31,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 78 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 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) [2024-11-13 14:34:31,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:34:31,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 95 [2024-11-13 14:34:31,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand