./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4b2b33802a1e3212162c0e55c40efaad08f7abe5e8690f0efef5fec80921b38 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:21:24,520 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:21:24,641 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-27 23:21:24,651 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:21:24,654 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:21:24,685 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:21:24,686 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:21:24,686 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:21:24,686 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:21:24,686 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:21:24,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:21:24,687 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:21:24,687 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:21:24,687 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:21:24,687 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:21:24,688 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:21:24,688 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:21:24,688 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:21:24,688 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:21:24,688 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:21:24,688 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 23:21:24,689 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 23:21:24,689 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 23:21:24,689 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:21:24,689 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 23:21:24,689 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:21:24,689 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:21:24,689 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:21:24,690 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:21:24,690 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:21:24,690 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:21:24,690 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:21:24,690 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:21:24,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:21:24,690 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:21:24,691 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:21:24,691 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:21:24,691 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:21:24,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:21:24,691 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:21:24,691 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:21:24,691 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:21:24,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:21:24,692 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:21:24,692 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:21:24,692 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:21:24,692 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:21:24,692 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_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4b2b33802a1e3212162c0e55c40efaad08f7abe5e8690f0efef5fec80921b38 [2024-11-27 23:21:25,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:21:25,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:21:25,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:21:25,063 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:21:25,064 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:21:25,065 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2024-11-27 23:21:28,232 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/data/0e66135db/fb5e3ce6e290415cbd5ef6c7a3bee276/FLAG90bacc30b [2024-11-27 23:21:28,564 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:21:28,565 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2024-11-27 23:21:28,578 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/data/0e66135db/fb5e3ce6e290415cbd5ef6c7a3bee276/FLAG90bacc30b [2024-11-27 23:21:28,604 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/data/0e66135db/fb5e3ce6e290415cbd5ef6c7a3bee276 [2024-11-27 23:21:28,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:21:28,611 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:21:28,612 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:21:28,614 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:21:28,619 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:21:28,620 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:21:28" (1/1) ... [2024-11-27 23:21:28,624 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d55b195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:28, skipping insertion in model container [2024-11-27 23:21:28,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:21:28" (1/1) ... [2024-11-27 23:21:28,642 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:21:28,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:21:28,854 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:21:28,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:21:28,894 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:21:28,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:28 WrapperNode [2024-11-27 23:21:28,895 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:21:28,896 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:21:28,896 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:21:28,897 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:21:28,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:28" (1/1) ... [2024-11-27 23:21:28,920 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:28" (1/1) ... [2024-11-27 23:21:28,942 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2024-11-27 23:21:28,942 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:21:28,943 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:21:28,943 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:21:28,943 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:21:28,955 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:28" (1/1) ... [2024-11-27 23:21:28,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:28" (1/1) ... [2024-11-27 23:21:28,960 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:28" (1/1) ... [2024-11-27 23:21:28,979 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 2 writes are split as follows [0, 2]. [2024-11-27 23:21:28,979 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:28" (1/1) ... [2024-11-27 23:21:28,979 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:28" (1/1) ... [2024-11-27 23:21:28,987 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:28" (1/1) ... [2024-11-27 23:21:28,988 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:28" (1/1) ... [2024-11-27 23:21:28,990 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:28" (1/1) ... [2024-11-27 23:21:28,994 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:28" (1/1) ... [2024-11-27 23:21:28,995 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:28" (1/1) ... [2024-11-27 23:21:28,996 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:21:29,001 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:21:29,001 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:21:29,001 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:21:29,002 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:28" (1/1) ... [2024-11-27 23:21:29,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:21:29,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:29,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:21:29,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:21:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:21:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2024-11-27 23:21:29,087 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2024-11-27 23:21:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:21:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 23:21:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 23:21:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2024-11-27 23:21:29,087 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2024-11-27 23:21:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 23:21:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 23:21:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:21:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:21:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 23:21:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 23:21:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 23:21:29,174 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:21:29,177 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:21:29,440 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-11-27 23:21:29,440 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:21:29,459 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:21:29,459 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-27 23:21:29,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:21:29 BoogieIcfgContainer [2024-11-27 23:21:29,461 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:21:29,467 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:21:29,467 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:21:29,475 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:21:29,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:21:28" (1/3) ... [2024-11-27 23:21:29,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6172a10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:21:29, skipping insertion in model container [2024-11-27 23:21:29,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:21:28" (2/3) ... [2024-11-27 23:21:29,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6172a10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:21:29, skipping insertion in model container [2024-11-27 23:21:29,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:21:29" (3/3) ... [2024-11-27 23:21:29,479 INFO L128 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2024-11-27 23:21:29,501 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:21:29,504 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG simple-recursive.c that has 3 procedures, 39 locations, 1 initial locations, 0 loop locations, and 12 error locations. [2024-11-27 23:21:29,567 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:21:29,590 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;@363e7e36, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:21:29,591 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-11-27 23:21:29,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 34 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 23:21:29,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-27 23:21:29,602 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:29,603 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-27 23:21:29,605 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-27 23:21:29,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:29,612 INFO L85 PathProgramCache]: Analyzing trace with hash 54682, now seen corresponding path program 1 times [2024-11-27 23:21:29,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:29,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642514387] [2024-11-27 23:21:29,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:29,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:29,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:29,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:29,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642514387] [2024-11-27 23:21:29,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642514387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:29,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:29,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:21:29,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742564987] [2024-11-27 23:21:29,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:29,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:21:29,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:29,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:21:29,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:21:29,989 INFO L87 Difference]: Start difference. First operand has 39 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 34 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-11-27 23:21:30,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:30,087 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2024-11-27 23:21:30,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:21:30,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) Word has length 3 [2024-11-27 23:21:30,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:30,098 INFO L225 Difference]: With dead ends: 37 [2024-11-27 23:21:30,099 INFO L226 Difference]: Without dead ends: 35 [2024-11-27 23:21:30,101 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:21:30,106 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:30,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 56 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:21:30,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-27 23:21:30,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-27 23:21:30,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 30 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 23:21:30,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2024-11-27 23:21:30,151 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 3 [2024-11-27 23:21:30,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:30,151 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2024-11-27 23:21:30,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-11-27 23:21:30,151 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2024-11-27 23:21:30,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-27 23:21:30,152 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:30,152 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-27 23:21:30,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:21:30,152 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-27 23:21:30,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:30,153 INFO L85 PathProgramCache]: Analyzing trace with hash 54683, now seen corresponding path program 1 times [2024-11-27 23:21:30,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:30,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866208672] [2024-11-27 23:21:30,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:30,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:30,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:30,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:30,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866208672] [2024-11-27 23:21:30,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866208672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:30,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:30,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:21:30,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466609784] [2024-11-27 23:21:30,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:30,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:21:30,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:30,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:21:30,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:21:30,294 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-11-27 23:21:30,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:30,327 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2024-11-27 23:21:30,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:21:30,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) Word has length 3 [2024-11-27 23:21:30,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:30,328 INFO L225 Difference]: With dead ends: 34 [2024-11-27 23:21:30,328 INFO L226 Difference]: Without dead ends: 34 [2024-11-27 23:21:30,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:21:30,329 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 3 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:30,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 54 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:21:30,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-27 23:21:30,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-27 23:21:30,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 29 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 23:21:30,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2024-11-27 23:21:30,335 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 3 [2024-11-27 23:21:30,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:30,335 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2024-11-27 23:21:30,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-11-27 23:21:30,336 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2024-11-27 23:21:30,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-27 23:21:30,336 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:30,336 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-27 23:21:30,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:21:30,336 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-27 23:21:30,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:30,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1629049723, now seen corresponding path program 1 times [2024-11-27 23:21:30,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:30,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145509672] [2024-11-27 23:21:30,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:30,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:30,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:30,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:30,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145509672] [2024-11-27 23:21:30,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145509672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:30,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:30,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:21:30,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550468401] [2024-11-27 23:21:30,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:30,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:21:30,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:30,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:21:30,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:21:30,582 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:30,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:30,750 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2024-11-27 23:21:30,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:21:30,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-27 23:21:30,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:30,753 INFO L225 Difference]: With dead ends: 50 [2024-11-27 23:21:30,753 INFO L226 Difference]: Without dead ends: 50 [2024-11-27 23:21:30,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:21:30,755 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 19 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:30,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 73 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:21:30,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-27 23:21:30,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2024-11-27 23:21:30,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.52) internal successors, (38), 35 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-27 23:21:30,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2024-11-27 23:21:30,763 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 6 [2024-11-27 23:21:30,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:30,763 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2024-11-27 23:21:30,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:30,764 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2024-11-27 23:21:30,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-27 23:21:30,764 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:30,764 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-27 23:21:30,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:21:30,765 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-27 23:21:30,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:30,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1629049724, now seen corresponding path program 1 times [2024-11-27 23:21:30,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:30,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275201235] [2024-11-27 23:21:30,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:30,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:31,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:31,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:31,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275201235] [2024-11-27 23:21:31,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275201235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:31,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:31,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:21:31,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376158962] [2024-11-27 23:21:31,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:31,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:21:31,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:31,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:21:31,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:21:31,072 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:31,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:31,188 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2024-11-27 23:21:31,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:21:31,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-27 23:21:31,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:31,190 INFO L225 Difference]: With dead ends: 46 [2024-11-27 23:21:31,190 INFO L226 Difference]: Without dead ends: 46 [2024-11-27 23:21:31,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:21:31,191 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 16 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:31,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 83 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:21:31,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-27 23:21:31,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2024-11-27 23:21:31,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.44) internal successors, (36), 35 states have internal predecessors, (36), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-27 23:21:31,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2024-11-27 23:21:31,205 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 6 [2024-11-27 23:21:31,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:31,205 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2024-11-27 23:21:31,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:31,206 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2024-11-27 23:21:31,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-27 23:21:31,206 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:31,206 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:31,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:21:31,207 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting plusErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-27 23:21:31,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:31,208 INFO L85 PathProgramCache]: Analyzing trace with hash -990742138, now seen corresponding path program 1 times [2024-11-27 23:21:31,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:31,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109840589] [2024-11-27 23:21:31,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:31,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:31,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:31,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:31,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109840589] [2024-11-27 23:21:31,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109840589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:31,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:31,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:21:31,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034718080] [2024-11-27 23:21:31,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:31,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:21:31,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:31,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:21:31,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:21:31,344 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:31,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:31,466 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2024-11-27 23:21:31,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:21:31,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-27 23:21:31,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:31,468 INFO L225 Difference]: With dead ends: 43 [2024-11-27 23:21:31,470 INFO L226 Difference]: Without dead ends: 43 [2024-11-27 23:21:31,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:21:31,471 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 15 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:31,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 60 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:21:31,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-27 23:21:31,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2024-11-27 23:21:31,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.36) internal successors, (34), 33 states have internal predecessors, (34), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-27 23:21:31,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2024-11-27 23:21:31,483 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 10 [2024-11-27 23:21:31,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:31,483 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2024-11-27 23:21:31,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:31,484 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2024-11-27 23:21:31,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-27 23:21:31,484 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:31,484 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:31,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:21:31,484 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting plusErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-27 23:21:31,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:31,485 INFO L85 PathProgramCache]: Analyzing trace with hash -990742137, now seen corresponding path program 1 times [2024-11-27 23:21:31,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:31,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313284625] [2024-11-27 23:21:31,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:31,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:31,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:31,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:31,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313284625] [2024-11-27 23:21:31,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313284625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:31,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:31,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:21:31,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095411676] [2024-11-27 23:21:31,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:31,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:21:31,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:31,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:21:31,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:21:31,815 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:32,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:32,008 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2024-11-27 23:21:32,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:21:32,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-27 23:21:32,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:32,011 INFO L225 Difference]: With dead ends: 39 [2024-11-27 23:21:32,011 INFO L226 Difference]: Without dead ends: 39 [2024-11-27 23:21:32,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:21:32,012 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 26 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:32,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 64 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:21:32,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-27 23:21:32,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2024-11-27 23:21:32,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.2) internal successors, (30), 29 states have internal predecessors, (30), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-27 23:21:32,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2024-11-27 23:21:32,023 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 10 [2024-11-27 23:21:32,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:32,024 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2024-11-27 23:21:32,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:32,024 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2024-11-27 23:21:32,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 23:21:32,025 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:32,025 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:32,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:21:32,025 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fooErr4ASSERT_VIOLATIONMEMORY_LEAK === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-27 23:21:32,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:32,026 INFO L85 PathProgramCache]: Analyzing trace with hash -646617514, now seen corresponding path program 1 times [2024-11-27 23:21:32,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:32,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358892527] [2024-11-27 23:21:32,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:32,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:32,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:32,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:32,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358892527] [2024-11-27 23:21:32,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358892527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:32,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:32,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:21:32,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941072877] [2024-11-27 23:21:32,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:32,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:21:32,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:32,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:21:32,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:21:32,186 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:32,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:32,272 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2024-11-27 23:21:32,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:21:32,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-27 23:21:32,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:32,273 INFO L225 Difference]: With dead ends: 33 [2024-11-27 23:21:32,274 INFO L226 Difference]: Without dead ends: 33 [2024-11-27 23:21:32,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:21:32,275 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 5 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:32,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 100 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:21:32,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-27 23:21:32,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-27 23:21:32,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 26 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-27 23:21:32,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-11-27 23:21:32,287 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 11 [2024-11-27 23:21:32,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:32,287 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-11-27 23:21:32,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:32,288 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-11-27 23:21:32,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-27 23:21:32,288 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:32,288 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:32,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:21:32,289 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-27 23:21:32,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:32,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1567376975, now seen corresponding path program 1 times [2024-11-27 23:21:32,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:32,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612775393] [2024-11-27 23:21:32,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:32,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:32,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:32,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:32,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612775393] [2024-11-27 23:21:32,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612775393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:32,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:32,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:21:32,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722353382] [2024-11-27 23:21:32,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:32,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:21:32,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:32,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:21:32,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:21:32,438 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:32,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:32,548 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2024-11-27 23:21:32,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:21:32,549 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-27 23:21:32,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:32,550 INFO L225 Difference]: With dead ends: 34 [2024-11-27 23:21:32,550 INFO L226 Difference]: Without dead ends: 34 [2024-11-27 23:21:32,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:21:32,551 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 19 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:32,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 63 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:21:32,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-27 23:21:32,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-11-27 23:21:32,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 25 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-27 23:21:32,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-11-27 23:21:32,556 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 16 [2024-11-27 23:21:32,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:32,556 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-11-27 23:21:32,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:32,556 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-11-27 23:21:32,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-27 23:21:32,557 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:32,557 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:32,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:21:32,558 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fooErr4ASSERT_VIOLATIONMEMORY_LEAK === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-27 23:21:32,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:32,558 INFO L85 PathProgramCache]: Analyzing trace with hash 518854658, now seen corresponding path program 1 times [2024-11-27 23:21:32,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:32,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143444977] [2024-11-27 23:21:32,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:32,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:33,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:33,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:33,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143444977] [2024-11-27 23:21:33,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143444977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:21:33,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296377254] [2024-11-27 23:21:33,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:33,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:33,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:33,118 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:33,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:21:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:33,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-27 23:21:33,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:33,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 23:21:33,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-27 23:21:33,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:33,541 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:21:34,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:34,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296377254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:21:34,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:21:34,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 29 [2024-11-27 23:21:34,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147377518] [2024-11-27 23:21:34,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:21:34,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-27 23:21:34,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:34,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-27 23:21:34,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2024-11-27 23:21:34,071 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 29 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 23 states have internal predecessors, (37), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:34,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:34,795 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2024-11-27 23:21:34,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 23:21:34,795 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 23 states have internal predecessors, (37), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-27 23:21:34,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:34,797 INFO L225 Difference]: With dead ends: 58 [2024-11-27 23:21:34,797 INFO L226 Difference]: Without dead ends: 58 [2024-11-27 23:21:34,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=236, Invalid=1656, Unknown=0, NotChecked=0, Total=1892 [2024-11-27 23:21:34,799 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 29 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:34,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 248 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:21:34,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-27 23:21:34,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2024-11-27 23:21:34,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 43 states have (on average 1.069767441860465) internal successors, (46), 45 states have internal predecessors, (46), 7 states have call successors, (7), 7 states have call predecessors, (7), 5 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-27 23:21:34,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2024-11-27 23:21:34,807 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 21 [2024-11-27 23:21:34,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:34,807 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2024-11-27 23:21:34,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 23 states have internal predecessors, (37), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:34,807 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2024-11-27 23:21:34,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-27 23:21:34,808 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:34,809 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:34,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 23:21:35,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:35,012 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fooErr4ASSERT_VIOLATIONMEMORY_LEAK === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-27 23:21:35,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:35,012 INFO L85 PathProgramCache]: Analyzing trace with hash -2124560806, now seen corresponding path program 2 times [2024-11-27 23:21:35,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:35,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512444268] [2024-11-27 23:21:35,012 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:21:35,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:35,061 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:21:35,062 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:21:36,293 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:36,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:36,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512444268] [2024-11-27 23:21:36,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512444268] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:21:36,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403533693] [2024-11-27 23:21:36,294 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:21:36,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:36,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:36,298 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:36,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:21:36,411 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:21:36,411 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:21:36,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-27 23:21:36,428 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:36,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 23:21:36,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-27 23:21:37,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-27 23:21:37,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-27 23:21:37,644 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:37,644 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:21:38,845 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:38,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403533693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:21:38,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:21:38,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26, 27] total 74 [2024-11-27 23:21:38,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60830047] [2024-11-27 23:21:38,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:21:38,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-27 23:21:38,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:38,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-27 23:21:38,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=4905, Unknown=0, NotChecked=0, Total=5402 [2024-11-27 23:21:38,857 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand has 74 states, 71 states have (on average 1.3098591549295775) internal successors, (93), 53 states have internal predecessors, (93), 21 states have call successors, (21), 21 states have call predecessors, (21), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:40,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:40,755 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2024-11-27 23:21:40,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-27 23:21:40,756 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 71 states have (on average 1.3098591549295775) internal successors, (93), 53 states have internal predecessors, (93), 21 states have call successors, (21), 21 states have call predecessors, (21), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-27 23:21:40,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:40,758 INFO L225 Difference]: With dead ends: 98 [2024-11-27 23:21:40,760 INFO L226 Difference]: Without dead ends: 98 [2024-11-27 23:21:40,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4255 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1193, Invalid=10797, Unknown=0, NotChecked=0, Total=11990 [2024-11-27 23:21:40,767 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 126 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:40,768 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 441 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:21:40,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-27 23:21:40,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2024-11-27 23:21:40,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 75 states have (on average 1.04) internal successors, (78), 77 states have internal predecessors, (78), 15 states have call successors, (15), 15 states have call predecessors, (15), 5 states have return successors, (17), 5 states have call predecessors, (17), 15 states have call successors, (17) [2024-11-27 23:21:40,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2024-11-27 23:21:40,789 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 41 [2024-11-27 23:21:40,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:40,789 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2024-11-27 23:21:40,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 71 states have (on average 1.3098591549295775) internal successors, (93), 53 states have internal predecessors, (93), 21 states have call successors, (21), 21 states have call predecessors, (21), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:40,790 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2024-11-27 23:21:40,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-27 23:21:40,793 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:40,794 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:40,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:21:40,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 23:21:40,998 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fooErr4ASSERT_VIOLATIONMEMORY_LEAK === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-27 23:21:40,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:40,998 INFO L85 PathProgramCache]: Analyzing trace with hash -33992950, now seen corresponding path program 3 times [2024-11-27 23:21:40,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:40,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922884578] [2024-11-27 23:21:40,999 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:21:40,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:41,024 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 23:21:41,024 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:21:41,462 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 68 proven. 1 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-27 23:21:41,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:41,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922884578] [2024-11-27 23:21:41,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922884578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:21:41,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107087941] [2024-11-27 23:21:41,464 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:21:41,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:41,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:41,467 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:41,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:21:41,572 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 23:21:41,572 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:21:41,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-27 23:21:41,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:41,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-27 23:21:41,756 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 68 proven. 1 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-27 23:21:41,756 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:21:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 68 proven. 1 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-27 23:21:41,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107087941] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:21:41,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:21:41,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 20 [2024-11-27 23:21:41,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712143335] [2024-11-27 23:21:41,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:21:41,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 23:21:41,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:41,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 23:21:41,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-11-27 23:21:41,936 INFO L87 Difference]: Start difference. First operand 97 states and 110 transitions. Second operand has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:42,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:42,224 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2024-11-27 23:21:42,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 23:21:42,225 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-27 23:21:42,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:42,227 INFO L225 Difference]: With dead ends: 98 [2024-11-27 23:21:42,227 INFO L226 Difference]: Without dead ends: 98 [2024-11-27 23:21:42,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 148 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2024-11-27 23:21:42,228 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:42,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 137 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:21:42,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-27 23:21:42,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 82. [2024-11-27 23:21:42,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 63 states have internal predecessors, (64), 13 states have call successors, (13), 13 states have call predecessors, (13), 5 states have return successors, (15), 5 states have call predecessors, (15), 13 states have call successors, (15) [2024-11-27 23:21:42,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2024-11-27 23:21:42,239 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 81 [2024-11-27 23:21:42,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:42,239 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2024-11-27 23:21:42,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2024-11-27 23:21:42,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-27 23:21:42,241 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:42,242 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:42,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 23:21:42,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 23:21:42,446 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-27 23:21:42,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:42,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1792731059, now seen corresponding path program 1 times [2024-11-27 23:21:42,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:42,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588404839] [2024-11-27 23:21:42,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:42,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:45,308 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 21 proven. 72 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-27 23:21:45,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:45,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588404839] [2024-11-27 23:21:45,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588404839] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:21:45,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877915632] [2024-11-27 23:21:45,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:45,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:45,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:45,312 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:45,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:21:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:45,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 23:21:45,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:45,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 3 [2024-11-27 23:21:45,536 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#x~0#1.base_6| Int)) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#x~0#1.base_6| 0)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#x~0#1.base_6|) 0))) is different from true [2024-11-27 23:21:45,537 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-11-27 23:21:45,537 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:21:45,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877915632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:45,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:21:45,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [26] total 28 [2024-11-27 23:21:45,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378999198] [2024-11-27 23:21:45,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:45,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:21:45,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:45,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:21:45,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=591, Unknown=1, NotChecked=50, Total=756 [2024-11-27 23:21:45,539 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 23:21:45,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:45,570 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2024-11-27 23:21:45,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:21:45,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 97 [2024-11-27 23:21:45,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:45,571 INFO L225 Difference]: With dead ends: 81 [2024-11-27 23:21:45,571 INFO L226 Difference]: Without dead ends: 0 [2024-11-27 23:21:45,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=591, Unknown=1, NotChecked=50, Total=756 [2024-11-27 23:21:45,575 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:45,576 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time] [2024-11-27 23:21:45,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-27 23:21:45,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-27 23:21:45,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-11-27 23:21:45,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-27 23:21:45,578 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 97 [2024-11-27 23:21:45,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:45,579 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-27 23:21:45,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 23:21:45,579 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-27 23:21:45,580 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-27 23:21:45,582 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2024-11-27 23:21:45,583 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2024-11-27 23:21:45,583 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2024-11-27 23:21:45,583 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fooErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2024-11-27 23:21:45,583 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fooErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 12 remaining) [2024-11-27 23:21:45,585 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2024-11-27 23:21:45,586 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2024-11-27 23:21:45,586 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 12 remaining) [2024-11-27 23:21:45,586 INFO L782 garLoopResultBuilder]: Registering result SAFE for location plusErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2024-11-27 23:21:45,586 INFO L782 garLoopResultBuilder]: Registering result SAFE for location plusErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 12 remaining) [2024-11-27 23:21:45,586 INFO L782 garLoopResultBuilder]: Registering result SAFE for location plusErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 12 remaining) [2024-11-27 23:21:45,586 INFO L782 garLoopResultBuilder]: Registering result SAFE for location plusErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 12 remaining) [2024-11-27 23:21:45,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 23:21:45,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 23:21:45,794 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:45,796 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 23:21:45,802 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:21:45 BoogieIcfgContainer [2024-11-27 23:21:45,803 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 23:21:45,803 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 23:21:45,803 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 23:21:45,804 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 23:21:45,804 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:21:29" (3/4) ... [2024-11-27 23:21:45,806 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-27 23:21:45,812 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2024-11-27 23:21:45,812 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure plus [2024-11-27 23:21:45,817 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-11-27 23:21:45,817 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-27 23:21:45,818 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-27 23:21:45,818 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-27 23:21:45,818 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-27 23:21:45,907 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 23:21:45,908 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 23:21:45,908 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 23:21:45,909 INFO L158 Benchmark]: Toolchain (without parser) took 17298.43ms. Allocated memory was 142.6MB in the beginning and 234.9MB in the end (delta: 92.3MB). Free memory was 117.1MB in the beginning and 93.4MB in the end (delta: 23.8MB). Peak memory consumption was 114.8MB. Max. memory is 16.1GB. [2024-11-27 23:21:45,910 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 117.4MB. Free memory was 73.4MB in the beginning and 73.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:21:45,910 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.00ms. Allocated memory is still 142.6MB. Free memory was 117.0MB in the beginning and 106.7MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:21:45,910 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.36ms. Allocated memory is still 142.6MB. Free memory was 106.7MB in the beginning and 105.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:21:45,911 INFO L158 Benchmark]: Boogie Preprocessor took 53.52ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 104.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:21:45,912 INFO L158 Benchmark]: RCFGBuilder took 460.11ms. Allocated memory is still 142.6MB. Free memory was 104.2MB in the beginning and 92.6MB in the end (delta: 11.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 23:21:45,915 INFO L158 Benchmark]: TraceAbstraction took 16335.86ms. Allocated memory was 142.6MB in the beginning and 234.9MB in the end (delta: 92.3MB). Free memory was 91.9MB in the beginning and 95.9MB in the end (delta: -4.0MB). Peak memory consumption was 89.6MB. Max. memory is 16.1GB. [2024-11-27 23:21:45,915 INFO L158 Benchmark]: Witness Printer took 104.70ms. Allocated memory is still 234.9MB. Free memory was 95.9MB in the beginning and 93.4MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:21:45,917 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 117.4MB. Free memory was 73.4MB in the beginning and 73.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.00ms. Allocated memory is still 142.6MB. Free memory was 117.0MB in the beginning and 106.7MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.36ms. Allocated memory is still 142.6MB. Free memory was 106.7MB in the beginning and 105.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 53.52ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 104.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 460.11ms. Allocated memory is still 142.6MB. Free memory was 104.2MB in the beginning and 92.6MB in the end (delta: 11.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 16335.86ms. Allocated memory was 142.6MB in the beginning and 234.9MB in the end (delta: 92.3MB). Free memory was 91.9MB in the beginning and 95.9MB in the end (delta: -4.0MB). Peak memory consumption was 89.6MB. Max. memory is 16.1GB. * Witness Printer took 104.70ms. Allocated memory is still 234.9MB. Free memory was 95.9MB in the beginning and 93.4MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 3]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 22]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 39 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 16.3s, OverallIterations: 12, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 278 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 270 mSDsluCounter, 1413 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 22 IncrementalHoareTripleChecker+Unchecked, 1113 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1446 IncrementalHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 300 mSDtfsCounter, 1446 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 595 GetRequests, 352 SyntacticMatches, 8 SemanticMatches, 235 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4905 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=10, InterpolantAutomatonStates: 140, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 42 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 10.2s InterpolantComputationTime, 545 NumberOfCodeBlocks, 425 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 669 ConstructedInterpolants, 1 QuantifiedInterpolants, 3127 SizeOfPredicates, 40 NumberOfNonLiveVariables, 841 ConjunctsInSsa, 184 ConjunctsInUnsatCore, 19 InterpolantComputations, 9 PerfectInterpolantSequences, 1100/1301 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-27 23:21:45,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f33be1-0aaa-4f55-9c47-d220d66b4029/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE