./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 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya --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 0.2.4-dev-0e0057c [2023-11-29 05:33:48,493 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:33:48,557 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 05:33:48,561 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:33:48,562 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:33:48,584 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:33:48,584 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:33:48,585 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:33:48,586 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:33:48,586 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:33:48,587 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:33:48,587 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:33:48,588 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:33:48,588 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:33:48,589 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:33:48,590 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:33:48,590 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:33:48,591 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:33:48,591 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:33:48,592 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:33:48,592 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 05:33:48,595 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 05:33:48,595 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 05:33:48,596 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:33:48,596 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 05:33:48,597 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 05:33:48,597 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:33:48,597 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:33:48,598 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:33:48,598 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:33:48,598 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:33:48,599 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:33:48,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:33:48,599 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:33:48,599 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:33:48,600 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:33:48,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:33:48,600 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:33:48,600 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:33:48,600 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:33:48,601 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:33:48,601 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4b2b33802a1e3212162c0e55c40efaad08f7abe5e8690f0efef5fec80921b38 [2023-11-29 05:33:48,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:33:48,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:33:48,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:33:48,879 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:33:48,880 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:33:48,881 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2023-11-29 05:33:51,806 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:33:52,004 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:33:52,004 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2023-11-29 05:33:52,010 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/data/8cacb2b15/5b24c2d334f54e9d87062eb1e5e78efc/FLAGfac7aec29 [2023-11-29 05:33:52,024 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/data/8cacb2b15/5b24c2d334f54e9d87062eb1e5e78efc [2023-11-29 05:33:52,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:33:52,028 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:33:52,029 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:33:52,029 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:33:52,034 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:33:52,035 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:33:52" (1/1) ... [2023-11-29 05:33:52,036 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5669c3ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:33:52, skipping insertion in model container [2023-11-29 05:33:52,036 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:33:52" (1/1) ... [2023-11-29 05:33:52,055 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:33:52,185 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:33:52,195 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:33:52,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:33:52,218 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:33:52,219 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:33:52 WrapperNode [2023-11-29 05:33:52,219 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:33:52,220 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:33:52,220 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:33:52,220 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:33:52,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:33:52" (1/1) ... [2023-11-29 05:33:52,232 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:33:52" (1/1) ... [2023-11-29 05:33:52,248 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2023-11-29 05:33:52,249 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:33:52,249 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:33:52,249 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:33:52,249 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:33:52,260 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:33:52" (1/1) ... [2023-11-29 05:33:52,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:33:52" (1/1) ... [2023-11-29 05:33:52,262 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:33:52" (1/1) ... [2023-11-29 05:33:52,276 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]. [2023-11-29 05:33:52,276 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:33:52" (1/1) ... [2023-11-29 05:33:52,276 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:33:52" (1/1) ... [2023-11-29 05:33:52,280 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:33:52" (1/1) ... [2023-11-29 05:33:52,282 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:33:52" (1/1) ... [2023-11-29 05:33:52,283 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:33:52" (1/1) ... [2023-11-29 05:33:52,283 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:33:52" (1/1) ... [2023-11-29 05:33:52,285 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:33:52,286 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:33:52,286 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:33:52,286 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:33:52,287 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:33:52" (1/1) ... [2023-11-29 05:33:52,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:33:52,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:33:52,315 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:33:52,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:33:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:33:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2023-11-29 05:33:52,356 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2023-11-29 05:33:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:33:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:33:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:33:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2023-11-29 05:33:52,357 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2023-11-29 05:33:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 05:33:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 05:33:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:33:52,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:33:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 05:33:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 05:33:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:33:52,427 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:33:52,429 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:33:52,578 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:33:52,606 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:33:52,607 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 05:33:52,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:33:52 BoogieIcfgContainer [2023-11-29 05:33:52,607 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:33:52,609 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:33:52,609 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:33:52,612 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:33:52,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:33:52" (1/3) ... [2023-11-29 05:33:52,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4099968e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:33:52, skipping insertion in model container [2023-11-29 05:33:52,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:33:52" (2/3) ... [2023-11-29 05:33:52,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4099968e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:33:52, skipping insertion in model container [2023-11-29 05:33:52,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:33:52" (3/3) ... [2023-11-29 05:33:52,615 INFO L112 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2023-11-29 05:33:52,633 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:33:52,634 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-29 05:33:52,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:33:52,684 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@6398dd75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:33:52,684 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-29 05:33:52,687 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 28 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) [2023-11-29 05:33:52,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-29 05:33:52,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:52,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-29 05:33:52,694 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:33:52,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:52,699 INFO L85 PathProgramCache]: Analyzing trace with hash 2726, now seen corresponding path program 1 times [2023-11-29 05:33:52,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:52,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280822748] [2023-11-29 05:33:52,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:52,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:52,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:33:52,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:52,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280822748] [2023-11-29 05:33:52,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280822748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:33:52,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:33:52,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:33:52,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871900648] [2023-11-29 05:33:52,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:33:52,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:33:52,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:52,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:33:52,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:33:52,927 INFO L87 Difference]: Start difference. First operand has 33 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 28 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-29 05:33:52,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:33:52,981 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2023-11-29 05:33:52,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:33:52,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-29 05:33:52,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:33:52,990 INFO L225 Difference]: With dead ends: 32 [2023-11-29 05:33:52,990 INFO L226 Difference]: Without dead ends: 31 [2023-11-29 05:33:52,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:33:52,996 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:33:52,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 41 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:33:53,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-29 05:33:53,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-29 05:33:53,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 26 states have internal predecessors, (26), 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) [2023-11-29 05:33:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2023-11-29 05:33:53,023 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 2 [2023-11-29 05:33:53,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:33:53,023 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2023-11-29 05:33:53,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-29 05:33:53,024 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2023-11-29 05:33:53,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-29 05:33:53,024 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:53,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-29 05:33:53,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:33:53,025 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:33:53,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:53,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2727, now seen corresponding path program 1 times [2023-11-29 05:33:53,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:53,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301890240] [2023-11-29 05:33:53,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:53,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:53,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:33:53,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:53,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301890240] [2023-11-29 05:33:53,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301890240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:33:53,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:33:53,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:33:53,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006303704] [2023-11-29 05:33:53,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:33:53,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:33:53,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:53,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:33:53,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:33:53,171 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-29 05:33:53,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:33:53,199 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2023-11-29 05:33:53,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:33:53,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-29 05:33:53,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:33:53,200 INFO L225 Difference]: With dead ends: 30 [2023-11-29 05:33:53,201 INFO L226 Difference]: Without dead ends: 30 [2023-11-29 05:33:53,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:33:53,203 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:33:53,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 42 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:33:53,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-29 05:33:53,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-29 05:33:53,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 25 states have internal predecessors, (25), 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) [2023-11-29 05:33:53,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2023-11-29 05:33:53,210 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 2 [2023-11-29 05:33:53,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:33:53,210 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2023-11-29 05:33:53,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-29 05:33:53,211 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2023-11-29 05:33:53,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 05:33:53,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:53,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 05:33:53,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:33:53,212 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:33:53,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:53,213 INFO L85 PathProgramCache]: Analyzing trace with hash 81228527, now seen corresponding path program 1 times [2023-11-29 05:33:53,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:53,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251090555] [2023-11-29 05:33:53,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:53,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:53,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:33:53,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:53,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251090555] [2023-11-29 05:33:53,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251090555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:33:53,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:33:53,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:33:53,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787603474] [2023-11-29 05:33:53,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:33:53,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:33:53,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:53,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:33:53,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:33:53,296 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2023-11-29 05:33:53,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:33:53,382 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2023-11-29 05:33:53,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:33:53,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 5 [2023-11-29 05:33:53,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:33:53,384 INFO L225 Difference]: With dead ends: 41 [2023-11-29 05:33:53,384 INFO L226 Difference]: Without dead ends: 41 [2023-11-29 05:33:53,384 INFO L412 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 [2023-11-29 05:33:53,386 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 29 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:33:53,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 43 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:33:53,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-29 05:33:53,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2023-11-29 05:33:53,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.619047619047619) internal successors, (34), 31 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) [2023-11-29 05:33:53,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2023-11-29 05:33:53,394 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 5 [2023-11-29 05:33:53,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:33:53,394 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2023-11-29 05:33:53,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2023-11-29 05:33:53,395 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2023-11-29 05:33:53,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 05:33:53,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:53,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 05:33:53,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:33:53,396 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:33:53,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:53,397 INFO L85 PathProgramCache]: Analyzing trace with hash 81228528, now seen corresponding path program 1 times [2023-11-29 05:33:53,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:53,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526164558] [2023-11-29 05:33:53,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:53,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:53,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:33:53,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:53,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526164558] [2023-11-29 05:33:53,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526164558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:33:53,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:33:53,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:33:53,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548848676] [2023-11-29 05:33:53,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:33:53,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:33:53,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:53,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:33:53,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:33:53,549 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-29 05:33:53,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:33:53,639 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2023-11-29 05:33:53,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:33:53,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 5 [2023-11-29 05:33:53,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:33:53,641 INFO L225 Difference]: With dead ends: 39 [2023-11-29 05:33:53,641 INFO L226 Difference]: Without dead ends: 39 [2023-11-29 05:33:53,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:33:53,644 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 19 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:33:53,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 61 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:33:53,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-29 05:33:53,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2023-11-29 05:33:53,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 31 states have internal predecessors, (32), 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) [2023-11-29 05:33:53,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2023-11-29 05:33:53,652 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 5 [2023-11-29 05:33:53,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:33:53,653 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2023-11-29 05:33:53,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-29 05:33:53,653 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2023-11-29 05:33:53,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 05:33:53,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:53,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:33:53,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:33:53,654 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting plusErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:33:53,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:53,655 INFO L85 PathProgramCache]: Analyzing trace with hash 350994170, now seen corresponding path program 1 times [2023-11-29 05:33:53,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:53,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591816282] [2023-11-29 05:33:53,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:53,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:53,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:33:53,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:53,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591816282] [2023-11-29 05:33:53,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591816282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:33:53,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:33:53,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:33:53,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622907445] [2023-11-29 05:33:53,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:33:53,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:33:53,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:53,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:33:53,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:33:53,759 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2023-11-29 05:33:53,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:33:53,882 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2023-11-29 05:33:53,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:33:53,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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 9 [2023-11-29 05:33:53,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:33:53,884 INFO L225 Difference]: With dead ends: 34 [2023-11-29 05:33:53,884 INFO L226 Difference]: Without dead ends: 34 [2023-11-29 05:33:53,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:33:53,886 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 30 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:33:53,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 28 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:33:53,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-29 05:33:53,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-11-29 05:33:53,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.380952380952381) internal successors, (29), 28 states have internal predecessors, (29), 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) [2023-11-29 05:33:53,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2023-11-29 05:33:53,893 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 9 [2023-11-29 05:33:53,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:33:53,894 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2023-11-29 05:33:53,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2023-11-29 05:33:53,894 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2023-11-29 05:33:53,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 05:33:53,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:53,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:33:53,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:33:53,895 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting plusErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:33:53,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:53,896 INFO L85 PathProgramCache]: Analyzing trace with hash 350994171, now seen corresponding path program 1 times [2023-11-29 05:33:53,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:53,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995316686] [2023-11-29 05:33:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:53,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:54,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:33:54,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:54,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995316686] [2023-11-29 05:33:54,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995316686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:33:54,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:33:54,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:33:54,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620840889] [2023-11-29 05:33:54,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:33:54,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:33:54,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:54,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:33:54,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:33:54,070 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-11-29 05:33:54,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:33:54,165 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2023-11-29 05:33:54,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:33:54,166 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 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 9 [2023-11-29 05:33:54,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:33:54,167 INFO L225 Difference]: With dead ends: 30 [2023-11-29 05:33:54,167 INFO L226 Difference]: Without dead ends: 30 [2023-11-29 05:33:54,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:33:54,169 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 24 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:33:54,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 37 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:33:54,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-29 05:33:54,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-29 05:33:54,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 24 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) [2023-11-29 05:33:54,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2023-11-29 05:33:54,174 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 9 [2023-11-29 05:33:54,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:33:54,174 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2023-11-29 05:33:54,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-11-29 05:33:54,175 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2023-11-29 05:33:54,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 05:33:54,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:54,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:33:54,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:33:54,176 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fooErr4ASSERT_VIOLATIONMEMORY_LEAK === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:33:54,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:54,176 INFO L85 PathProgramCache]: Analyzing trace with hash 351047532, now seen corresponding path program 1 times [2023-11-29 05:33:54,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:54,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245194259] [2023-11-29 05:33:54,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:54,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:54,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:33:54,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:54,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245194259] [2023-11-29 05:33:54,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245194259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:33:54,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:33:54,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:33:54,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666285145] [2023-11-29 05:33:54,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:33:54,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:33:54,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:54,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:33:54,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:33:54,284 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2023-11-29 05:33:54,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:33:54,357 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2023-11-29 05:33:54,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:33:54,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 9 [2023-11-29 05:33:54,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:33:54,359 INFO L225 Difference]: With dead ends: 28 [2023-11-29 05:33:54,359 INFO L226 Difference]: Without dead ends: 28 [2023-11-29 05:33:54,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:33:54,361 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 5 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:33:54,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 65 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:33:54,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-29 05:33:54,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-29 05:33:54,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 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) [2023-11-29 05:33:54,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2023-11-29 05:33:54,366 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 9 [2023-11-29 05:33:54,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:33:54,366 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2023-11-29 05:33:54,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2023-11-29 05:33:54,367 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2023-11-29 05:33:54,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 05:33:54,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:54,367 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:33:54,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:33:54,368 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fooErr4ASSERT_VIOLATIONMEMORY_LEAK === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:33:54,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:54,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1072831909, now seen corresponding path program 1 times [2023-11-29 05:33:54,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:54,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642859134] [2023-11-29 05:33:54,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:54,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:54,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:33:54,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:54,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642859134] [2023-11-29 05:33:54,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642859134] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:33:54,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883255171] [2023-11-29 05:33:54,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:54,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:54,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:33:54,688 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:33:54,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:33:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:54,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-29 05:33:54,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:33:54,847 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 [2023-11-29 05:33:55,052 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 [2023-11-29 05:33:55,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:33:55,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:33:55,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:33:55,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883255171] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:33:55,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:33:55,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 14] total 35 [2023-11-29 05:33:55,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030092430] [2023-11-29 05:33:55,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:33:55,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 05:33:55,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:55,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 05:33:55,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1057, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 05:33:55,545 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 35 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 26 states have internal predecessors, (37), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:33:56,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:33:56,105 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2023-11-29 05:33:56,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 05:33:56,106 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 26 states have internal predecessors, (37), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-29 05:33:56,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:33:56,109 INFO L225 Difference]: With dead ends: 50 [2023-11-29 05:33:56,109 INFO L226 Difference]: Without dead ends: 50 [2023-11-29 05:33:56,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=282, Invalid=2070, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 05:33:56,112 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 31 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:33:56,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 164 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:33:56,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-29 05:33:56,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2023-11-29 05:33:56,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 37 states have internal predecessors, (38), 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) [2023-11-29 05:33:56,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2023-11-29 05:33:56,121 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 17 [2023-11-29 05:33:56,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:33:56,122 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2023-11-29 05:33:56,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 26 states have internal predecessors, (37), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:33:56,122 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2023-11-29 05:33:56,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 05:33:56,123 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:56,123 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:33:56,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:33:56,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:56,325 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fooErr4ASSERT_VIOLATIONMEMORY_LEAK === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:33:56,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:56,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1052925719, now seen corresponding path program 2 times [2023-11-29 05:33:56,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:56,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267517259] [2023-11-29 05:33:56,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:56,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:57,120 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:33:57,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:57,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267517259] [2023-11-29 05:33:57,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267517259] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:33:57,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420578940] [2023-11-29 05:33:57,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:33:57,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:57,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:33:57,122 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:33:57,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:33:57,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:33:57,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:33:57,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 91 conjunts are in the unsatisfiable core [2023-11-29 05:33:57,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:33:57,229 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 [2023-11-29 05:33:57,282 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 [2023-11-29 05:33:57,340 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 [2023-11-29 05:33:57,393 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 [2023-11-29 05:33:57,431 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:33:57,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:33:58,099 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:33:58,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420578940] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:33:58,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:33:58,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 24] total 48 [2023-11-29 05:33:58,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567106426] [2023-11-29 05:33:58,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:33:58,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 05:33:58,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:58,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 05:33:58,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=2000, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 05:33:58,104 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 48 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 34 states have internal predecessors, (58), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:33:59,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:33:59,131 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2023-11-29 05:33:59,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-29 05:33:59,132 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 34 states have internal predecessors, (58), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-11-29 05:33:59,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:33:59,134 INFO L225 Difference]: With dead ends: 82 [2023-11-29 05:33:59,134 INFO L226 Difference]: Without dead ends: 82 [2023-11-29 05:33:59,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1542 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=738, Invalid=5114, Unknown=0, NotChecked=0, Total=5852 [2023-11-29 05:33:59,138 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 70 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:33:59,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 229 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:33:59,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-29 05:33:59,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2023-11-29 05:33:59,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 61 states have internal predecessors, (62), 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) [2023-11-29 05:33:59,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2023-11-29 05:33:59,150 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 33 [2023-11-29 05:33:59,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:33:59,150 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2023-11-29 05:33:59,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 34 states have internal predecessors, (58), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:33:59,151 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2023-11-29 05:33:59,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-29 05:33:59,153 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:59,153 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:33:59,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:33:59,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:59,355 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fooErr4ASSERT_VIOLATIONMEMORY_LEAK === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:33:59,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:59,356 INFO L85 PathProgramCache]: Analyzing trace with hash 976451067, now seen corresponding path program 3 times [2023-11-29 05:33:59,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:59,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381135589] [2023-11-29 05:33:59,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:59,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:01,617 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:34:01,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:34:01,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381135589] [2023-11-29 05:34:01,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381135589] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:34:01,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421127590] [2023-11-29 05:34:01,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:34:01,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:34:01,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:34:01,620 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:34:01,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:34:01,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 05:34:01,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:34:01,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 05:34:01,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:34:01,863 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 [2023-11-29 05:34:02,017 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-29 05:34:02,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:34:02,327 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-29 05:34:02,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421127590] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:34:02,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:34:02,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 13, 13] total 56 [2023-11-29 05:34:02,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969715163] [2023-11-29 05:34:02,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:34:02,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-11-29 05:34:02,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:34:02,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-11-29 05:34:02,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=2771, Unknown=0, NotChecked=0, Total=3080 [2023-11-29 05:34:02,331 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 56 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 39 states have internal predecessors, (73), 18 states have call successors, (20), 18 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:34:03,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:34:03,618 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2023-11-29 05:34:03,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-11-29 05:34:03,618 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 39 states have internal predecessors, (73), 18 states have call successors, (20), 18 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-11-29 05:34:03,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:34:03,621 INFO L225 Difference]: With dead ends: 86 [2023-11-29 05:34:03,621 INFO L226 Difference]: Without dead ends: 86 [2023-11-29 05:34:03,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 116 SyntacticMatches, 6 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1964 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1112, Invalid=7630, Unknown=0, NotChecked=0, Total=8742 [2023-11-29 05:34:03,624 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 108 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:34:03,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 349 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:34:03,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-29 05:34:03,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2023-11-29 05:34:03,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 62 states have (on average 1.0161290322580645) internal successors, (63), 62 states have internal predecessors, (63), 17 states have call successors, (17), 17 states have call predecessors, (17), 5 states have return successors, (19), 5 states have call predecessors, (19), 17 states have call successors, (19) [2023-11-29 05:34:03,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2023-11-29 05:34:03,633 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 65 [2023-11-29 05:34:03,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:34:03,634 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2023-11-29 05:34:03,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 39 states have internal predecessors, (73), 18 states have call successors, (20), 18 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:34:03,634 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2023-11-29 05:34:03,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-29 05:34:03,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:34:03,639 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:34:03,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:34:03,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 05:34:03,843 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:34:03,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:03,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1069249261, now seen corresponding path program 1 times [2023-11-29 05:34:03,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:03,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142285368] [2023-11-29 05:34:03,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:03,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:05,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:34:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:06,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:08,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:09,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:10,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:11,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:11,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:12,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:12,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:12,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:12,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:13,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:13,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:13,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:13,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:13,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:13,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:13,713 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 22 proven. 128 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-11-29 05:34:13,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:34:13,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142285368] [2023-11-29 05:34:13,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142285368] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:34:13,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026054617] [2023-11-29 05:34:13,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:13,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:34:13,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:34:13,715 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:34:13,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:34:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:13,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 209 conjunts are in the unsatisfiable core [2023-11-29 05:34:13,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:34:13,909 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 [2023-11-29 05:34:16,229 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 6 proven. 152 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-11-29 05:34:16,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:34:20,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026054617] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:34:20,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:34:20,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 53 [2023-11-29 05:34:20,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635806304] [2023-11-29 05:34:20,016 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:34:20,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-29 05:34:20,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:34:20,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-29 05:34:20,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=2536, Unknown=0, NotChecked=0, Total=2862 [2023-11-29 05:34:20,022 INFO L87 Difference]: Start difference. First operand 85 states and 99 transitions. Second operand has 53 states, 48 states have (on average 1.2708333333333333) internal successors, (61), 52 states have internal predecessors, (61), 7 states have call successors, (7), 1 states have call predecessors, (7), 34 states have return successors, (34), 33 states have call predecessors, (34), 7 states have call successors, (34) [2023-11-29 05:34:22,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:34:22,090 INFO L93 Difference]: Finished difference Result 117 states and 193 transitions. [2023-11-29 05:34:22,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 05:34:22,091 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 48 states have (on average 1.2708333333333333) internal successors, (61), 52 states have internal predecessors, (61), 7 states have call successors, (7), 1 states have call predecessors, (7), 34 states have return successors, (34), 33 states have call predecessors, (34), 7 states have call successors, (34) Word has length 108 [2023-11-29 05:34:22,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:34:22,095 INFO L225 Difference]: With dead ends: 117 [2023-11-29 05:34:22,096 INFO L226 Difference]: Without dead ends: 115 [2023-11-29 05:34:22,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1906 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=617, Invalid=4639, Unknown=0, NotChecked=0, Total=5256 [2023-11-29 05:34:22,098 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:34:22,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 149 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:34:22,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-29 05:34:22,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2023-11-29 05:34:22,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 76 states have (on average 1.013157894736842) internal successors, (77), 76 states have internal predecessors, (77), 17 states have call successors, (17), 17 states have call predecessors, (17), 19 states have return successors, (75), 19 states have call predecessors, (75), 17 states have call successors, (75) [2023-11-29 05:34:22,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 169 transitions. [2023-11-29 05:34:22,115 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 169 transitions. Word has length 108 [2023-11-29 05:34:22,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:34:22,116 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 169 transitions. [2023-11-29 05:34:22,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 48 states have (on average 1.2708333333333333) internal successors, (61), 52 states have internal predecessors, (61), 7 states have call successors, (7), 1 states have call predecessors, (7), 34 states have return successors, (34), 33 states have call predecessors, (34), 7 states have call successors, (34) [2023-11-29 05:34:22,117 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 169 transitions. [2023-11-29 05:34:22,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 05:34:22,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:34:22,120 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:34:22,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:34:22,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 05:34:22,323 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:34:22,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:22,323 INFO L85 PathProgramCache]: Analyzing trace with hash 812844243, now seen corresponding path program 2 times [2023-11-29 05:34:22,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:22,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141768514] [2023-11-29 05:34:22,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:22,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:23,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:34:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:24,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:25,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:25,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:26,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:27,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:27,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:28,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:28,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:29,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:29,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:29,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:29,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:30,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:30,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:30,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:30,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:30,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:30,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:34:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 25 proven. 162 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-11-29 05:34:30,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:34:30,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141768514] [2023-11-29 05:34:30,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141768514] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:34:30,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428813142] [2023-11-29 05:34:30,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:34:30,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:34:30,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:34:30,709 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:34:30,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:34:30,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 05:34:30,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:34:30,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:34:30,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:34:30,857 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 [2023-11-29 05:34:30,880 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#x~0#1.base_10| Int)) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#x~0#1.base_10| 0)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#x~0#1.base_10|) 0))) is different from true [2023-11-29 05:34:30,881 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2023-11-29 05:34:30,881 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:34:30,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428813142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:34:30,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:34:30,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [31] total 33 [2023-11-29 05:34:30,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311309314] [2023-11-29 05:34:30,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:34:30,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:34:30,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:34:30,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:34:30,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=827, Unknown=1, NotChecked=60, Total=1056 [2023-11-29 05:34:30,884 INFO L87 Difference]: Start difference. First operand 113 states and 169 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-11-29 05:34:30,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:34:30,901 INFO L93 Difference]: Finished difference Result 112 states and 168 transitions. [2023-11-29 05:34:30,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:34:30,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 120 [2023-11-29 05:34:30,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:34:30,903 INFO L225 Difference]: With dead ends: 112 [2023-11-29 05:34:30,903 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 05:34:30,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=827, Unknown=1, NotChecked=60, Total=1056 [2023-11-29 05:34:30,904 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:34:30,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 19 Unchecked, 0.0s Time] [2023-11-29 05:34:30,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 05:34:30,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 05:34:30,906 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) [2023-11-29 05:34:30,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 05:34:30,906 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 120 [2023-11-29 05:34:30,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:34:30,906 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 05:34:30,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-11-29 05:34:30,907 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 05:34:30,907 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 05:34:30,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fooErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-11-29 05:34:30,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fooErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-11-29 05:34:30,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fooErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-11-29 05:34:30,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fooErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-11-29 05:34:30,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fooErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 12 remaining) [2023-11-29 05:34:30,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-11-29 05:34:30,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-11-29 05:34:30,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 12 remaining) [2023-11-29 05:34:30,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location plusErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2023-11-29 05:34:30,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location plusErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 12 remaining) [2023-11-29 05:34:30,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location plusErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 12 remaining) [2023-11-29 05:34:30,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location plusErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 12 remaining) [2023-11-29 05:34:30,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:34:31,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 05:34:31,115 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:34:31,117 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 05:34:31,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 05:34:31 BoogieIcfgContainer [2023-11-29 05:34:31,120 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 05:34:31,121 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 05:34:31,121 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 05:34:31,121 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 05:34:31,121 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:33:52" (3/4) ... [2023-11-29 05:34:31,124 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 05:34:31,127 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2023-11-29 05:34:31,127 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure plus [2023-11-29 05:34:31,131 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-11-29 05:34:31,131 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-29 05:34:31,131 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 05:34:31,131 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 05:34:31,131 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 05:34:31,200 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 05:34:31,201 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 05:34:31,201 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 05:34:31,202 INFO L158 Benchmark]: Toolchain (without parser) took 39174.06ms. Allocated memory was 144.7MB in the beginning and 704.6MB in the end (delta: 559.9MB). Free memory was 107.0MB in the beginning and 632.9MB in the end (delta: -525.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-29 05:34:31,202 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 144.7MB. Free memory was 115.2MB in the beginning and 115.1MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 05:34:31,203 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.13ms. Allocated memory is still 144.7MB. Free memory was 107.0MB in the beginning and 97.0MB in the end (delta: 10.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 05:34:31,203 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.91ms. Allocated memory is still 144.7MB. Free memory was 97.0MB in the beginning and 95.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 05:34:31,204 INFO L158 Benchmark]: Boogie Preprocessor took 35.74ms. Allocated memory is still 144.7MB. Free memory was 95.5MB in the beginning and 93.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 05:34:31,204 INFO L158 Benchmark]: RCFGBuilder took 321.57ms. Allocated memory is still 144.7MB. Free memory was 93.8MB in the beginning and 80.8MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-29 05:34:31,205 INFO L158 Benchmark]: TraceAbstraction took 38511.01ms. Allocated memory was 144.7MB in the beginning and 704.6MB in the end (delta: 559.9MB). Free memory was 79.8MB in the beginning and 637.1MB in the end (delta: -557.2MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. [2023-11-29 05:34:31,205 INFO L158 Benchmark]: Witness Printer took 80.63ms. Allocated memory is still 704.6MB. Free memory was 637.1MB in the beginning and 632.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 05:34:31,207 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 144.7MB. Free memory was 115.2MB in the beginning and 115.1MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 190.13ms. Allocated memory is still 144.7MB. Free memory was 107.0MB in the beginning and 97.0MB in the end (delta: 10.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.91ms. Allocated memory is still 144.7MB. Free memory was 97.0MB in the beginning and 95.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.74ms. Allocated memory is still 144.7MB. Free memory was 95.5MB in the beginning and 93.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 321.57ms. Allocated memory is still 144.7MB. Free memory was 93.8MB in the beginning and 80.8MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 38511.01ms. Allocated memory was 144.7MB in the beginning and 704.6MB in the end (delta: 559.9MB). Free memory was 79.8MB in the beginning and 637.1MB in the end (delta: -557.2MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. * Witness Printer took 80.63ms. Allocated memory is still 704.6MB. Free memory was 637.1MB in the beginning and 632.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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, 33 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 38.5s, OverallIterations: 12, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 353 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 346 mSDsluCounter, 1234 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 19 IncrementalHoareTripleChecker+Unchecked, 1025 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1818 IncrementalHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 209 mSDtfsCounter, 1818 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 823 GetRequests, 471 SyntacticMatches, 6 SemanticMatches, 346 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6227 ImplicationChecksByTransitivity, 8.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=11, InterpolantAutomatonStates: 199, 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, 11 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 30.7s InterpolantComputationTime, 727 NumberOfCodeBlocks, 571 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 822 ConstructedInterpolants, 11 QuantifiedInterpolants, 6733 SizeOfPredicates, 95 NumberOfNonLiveVariables, 1008 ConjunctsInSsa, 388 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 1640/2381 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 - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 05:34:31,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a610ee3e-11df-4748-86ce-bbc48bcf6405/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE