./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU --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 64bit --witnessprinter.graph.data.programhash 7fb5800c8758888815eae44b37eaf9bc49d0baa078e11009154801fa3e07455f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:59:56,548 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:59:56,613 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-10-31 21:59:56,618 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:59:56,618 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:59:56,641 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:59:56,641 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:59:56,642 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:59:56,642 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:59:56,643 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:59:56,643 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:59:56,643 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:59:56,644 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:59:56,645 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:59:56,645 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:59:56,646 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:59:56,646 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:59:56,646 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:59:56,647 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 21:59:56,647 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 21:59:56,648 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 21:59:56,648 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:59:56,649 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 21:59:56,649 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:59:56,649 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 21:59:56,650 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:59:56,650 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:59:56,650 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:59:56,651 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:59:56,651 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:59:56,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:59:56,652 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:59:56,652 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:59:56,653 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:59:56,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:59:56,653 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:59:56,654 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:59:56,654 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:59:56,654 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:59:56,654 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_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7fb5800c8758888815eae44b37eaf9bc49d0baa078e11009154801fa3e07455f [2024-10-31 21:59:56,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:59:56,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:59:56,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:59:56,984 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:59:56,985 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:59:56,986 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-2.i Unable to find full path for "g++" [2024-10-31 21:59:59,220 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:59:59,657 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:59:59,659 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-2.i [2024-10-31 21:59:59,693 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/data/7ac6174e0/a6a7a47509864aefac0316f94a25690f/FLAG77e4fa226 [2024-10-31 21:59:59,709 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/data/7ac6174e0/a6a7a47509864aefac0316f94a25690f [2024-10-31 21:59:59,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:59:59,713 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:59:59,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:59:59,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:59:59,723 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:59:59,724 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:59:59" (1/1) ... [2024-10-31 21:59:59,725 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36927365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:59, skipping insertion in model container [2024-10-31 21:59:59,726 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:59:59" (1/1) ... [2024-10-31 21:59:59,812 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:00:01,128 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:00:01,131 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:00:01,134 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:00:01,136 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:00:01,139 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:00:01,139 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:00:01,145 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:00:01,145 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:00:01,147 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:00:01,152 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:00:01,154 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:00:01,164 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:00:01,165 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:00:01,172 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:00:01,173 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:00:01,175 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:00:01,177 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:00:01,180 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:00:01,209 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:00:01,227 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:00:01,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:00:01,292 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:00:01,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:00:01,747 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:00:01,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01 WrapperNode [2024-10-31 22:00:01,748 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:00:01,749 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:00:01,749 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:00:01,749 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:00:01,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:01,815 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:01,907 INFO L138 Inliner]: procedures = 615, calls = 599, calls flagged for inlining = 25, calls inlined = 23, statements flattened = 1093 [2024-10-31 22:00:01,907 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:00:01,908 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:00:01,908 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:00:01,909 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:00:01,921 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:01,925 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:01,943 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:01,982 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-10-31 22:00:01,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:01,983 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:02,033 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:02,040 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:02,048 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:02,053 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:02,065 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:00:02,066 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:00:02,066 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:00:02,066 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:00:02,067 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (1/1) ... [2024-10-31 22:00:02,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:00:02,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:00:02,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:00:02,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:00:02,162 INFO L130 BoogieDeclarations]: Found specification of procedure execvp [2024-10-31 22:00:02,162 INFO L138 BoogieDeclarations]: Found implementation of procedure execvp [2024-10-31 22:00:02,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:00:02,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-10-31 22:00:02,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-10-31 22:00:02,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-31 22:00:02,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:00:02,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:00:02,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-10-31 22:00:02,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:00:02,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:00:02,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2024-10-31 22:00:02,164 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2024-10-31 22:00:02,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-10-31 22:00:02,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-10-31 22:00:02,164 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg_and_die [2024-10-31 22:00:02,165 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg_and_die [2024-10-31 22:00:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-31 22:00:02,165 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-31 22:00:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:00:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-10-31 22:00:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-10-31 22:00:02,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-31 22:00:02,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-31 22:00:02,622 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:00:02,624 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:00:04,986 INFO L? ?]: Removed 538 outVars from TransFormulas that were not future-live. [2024-10-31 22:00:04,986 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:00:05,020 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:00:05,021 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-10-31 22:00:05,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:00:05 BoogieIcfgContainer [2024-10-31 22:00:05,021 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:00:05,024 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:00:05,024 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:00:05,027 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:00:05,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:59:59" (1/3) ... [2024-10-31 22:00:05,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644e5b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:00:05, skipping insertion in model container [2024-10-31 22:00:05,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:01" (2/3) ... [2024-10-31 22:00:05,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644e5b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:00:05, skipping insertion in model container [2024-10-31 22:00:05,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:00:05" (3/3) ... [2024-10-31 22:00:05,031 INFO L112 eAbstractionObserver]: Analyzing ICFG chroot-incomplete-2.i [2024-10-31 22:00:05,052 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:00:05,052 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 200 error locations. [2024-10-31 22:00:05,117 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:00:05,126 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2bed4223, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:00:05,126 INFO L334 AbstractCegarLoop]: Starting to check reachability of 200 error locations. [2024-10-31 22:00:05,133 INFO L276 IsEmpty]: Start isEmpty. Operand has 500 states, 280 states have (on average 1.9285714285714286) internal successors, (540), 482 states have internal predecessors, (540), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-31 22:00:05,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-31 22:00:05,139 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:00:05,140 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-31 22:00:05,141 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [execvpErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, execvpErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, execvpErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 197 more)] === [2024-10-31 22:00:05,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:05,147 INFO L85 PathProgramCache]: Analyzing trace with hash 474721, now seen corresponding path program 1 times [2024-10-31 22:00:05,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:05,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705549863] [2024-10-31 22:00:05,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:05,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:06,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:06,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:06,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705549863] [2024-10-31 22:00:06,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705549863] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:06,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:06,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:00:06,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580154320] [2024-10-31 22:00:06,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:06,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:00:06,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:06,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:00:06,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:00:06,235 INFO L87 Difference]: Start difference. First operand has 500 states, 280 states have (on average 1.9285714285714286) internal successors, (540), 482 states have internal predecessors, (540), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:07,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:00:07,604 INFO L93 Difference]: Finished difference Result 487 states and 535 transitions. [2024-10-31 22:00:07,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:00:07,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-10-31 22:00:07,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:00:07,622 INFO L225 Difference]: With dead ends: 487 [2024-10-31 22:00:07,623 INFO L226 Difference]: Without dead ends: 485 [2024-10-31 22:00:07,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:00:07,629 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 216 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:00:07,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 598 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-31 22:00:07,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2024-10-31 22:00:07,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 468. [2024-10-31 22:00:07,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 258 states have (on average 1.8992248062015504) internal successors, (490), 452 states have internal predecessors, (490), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-31 22:00:07,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 515 transitions. [2024-10-31 22:00:07,706 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 515 transitions. Word has length 3 [2024-10-31 22:00:07,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:00:07,706 INFO L471 AbstractCegarLoop]: Abstraction has 468 states and 515 transitions. [2024-10-31 22:00:07,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:07,707 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 515 transitions. [2024-10-31 22:00:07,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-31 22:00:07,707 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:00:07,708 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-31 22:00:07,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:00:07,708 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [execvpErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, execvpErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, execvpErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 197 more)] === [2024-10-31 22:00:07,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:07,709 INFO L85 PathProgramCache]: Analyzing trace with hash 474722, now seen corresponding path program 1 times [2024-10-31 22:00:07,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:07,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633302694] [2024-10-31 22:00:07,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:07,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:08,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:08,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633302694] [2024-10-31 22:00:08,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633302694] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:08,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:08,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:00:08,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826959282] [2024-10-31 22:00:08,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:08,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:00:08,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:08,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:00:08,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:00:08,373 INFO L87 Difference]: Start difference. First operand 468 states and 515 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:09,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:00:09,729 INFO L93 Difference]: Finished difference Result 467 states and 514 transitions. [2024-10-31 22:00:09,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:00:09,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-10-31 22:00:09,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:00:09,732 INFO L225 Difference]: With dead ends: 467 [2024-10-31 22:00:09,732 INFO L226 Difference]: Without dead ends: 467 [2024-10-31 22:00:09,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:00:09,733 INFO L432 NwaCegarLoop]: 507 mSDtfsCounter, 11 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:00:09,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 818 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-31 22:00:09,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-10-31 22:00:09,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2024-10-31 22:00:09,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 258 states have (on average 1.8953488372093024) internal successors, (489), 451 states have internal predecessors, (489), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-31 22:00:09,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 514 transitions. [2024-10-31 22:00:09,753 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 514 transitions. Word has length 3 [2024-10-31 22:00:09,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:00:09,754 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 514 transitions. [2024-10-31 22:00:09,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 514 transitions. [2024-10-31 22:00:09,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-31 22:00:09,755 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:00:09,755 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:00:09,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:00:09,756 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [execvpErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, execvpErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, execvpErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 197 more)] === [2024-10-31 22:00:09,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:09,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1257932713, now seen corresponding path program 1 times [2024-10-31 22:00:09,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:09,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562631370] [2024-10-31 22:00:09,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:09,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:10,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:10,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:10,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562631370] [2024-10-31 22:00:10,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562631370] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:10,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:10,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:00:10,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744274963] [2024-10-31 22:00:10,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:10,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:00:10,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:10,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:00:10,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:00:10,382 INFO L87 Difference]: Start difference. First operand 467 states and 514 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:11,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-31 22:00:12,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:00:12,230 INFO L93 Difference]: Finished difference Result 470 states and 517 transitions. [2024-10-31 22:00:12,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:00:12,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2024-10-31 22:00:12,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:00:12,234 INFO L225 Difference]: With dead ends: 470 [2024-10-31 22:00:12,234 INFO L226 Difference]: Without dead ends: 470 [2024-10-31 22:00:12,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:00:12,235 INFO L432 NwaCegarLoop]: 505 mSDtfsCounter, 12 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-31 22:00:12,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 818 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-31 22:00:12,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2024-10-31 22:00:12,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 469. [2024-10-31 22:00:12,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 260 states have (on average 1.8884615384615384) internal successors, (491), 453 states have internal predecessors, (491), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-31 22:00:12,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 516 transitions. [2024-10-31 22:00:12,272 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 516 transitions. Word has length 6 [2024-10-31 22:00:12,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:00:12,272 INFO L471 AbstractCegarLoop]: Abstraction has 469 states and 516 transitions. [2024-10-31 22:00:12,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:12,273 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 516 transitions. [2024-10-31 22:00:12,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-31 22:00:12,273 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:00:12,273 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:12,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:00:12,273 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [execvpErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, execvpErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, execvpErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 197 more)] === [2024-10-31 22:00:12,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:12,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1484199375, now seen corresponding path program 1 times [2024-10-31 22:00:12,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:12,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891539988] [2024-10-31 22:00:12,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:12,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:13,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:13,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:13,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891539988] [2024-10-31 22:00:13,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891539988] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:00:13,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247515584] [2024-10-31 22:00:13,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:13,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:00:13,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:00:13,036 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:00:13,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:00:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:13,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:00:13,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:00:13,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:13,766 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:00:13,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 7 treesize of output 5 [2024-10-31 22:00:13,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:13,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247515584] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:00:13,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:00:13,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-10-31 22:00:13,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110013000] [2024-10-31 22:00:13,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:00:13,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-31 22:00:13,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:13,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-31 22:00:13,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:00:13,954 INFO L87 Difference]: Start difference. First operand 469 states and 516 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:18,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:00:18,577 INFO L93 Difference]: Finished difference Result 473 states and 520 transitions. [2024-10-31 22:00:18,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:00:18,578 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 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 9 [2024-10-31 22:00:18,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:00:18,580 INFO L225 Difference]: With dead ends: 473 [2024-10-31 22:00:18,580 INFO L226 Difference]: Without dead ends: 473 [2024-10-31 22:00:18,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2024-10-31 22:00:18,582 INFO L432 NwaCegarLoop]: 502 mSDtfsCounter, 460 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:00:18,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 2016 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-10-31 22:00:18,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2024-10-31 22:00:18,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2024-10-31 22:00:18,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 265 states have (on average 1.8679245283018868) internal successors, (495), 457 states have internal predecessors, (495), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-31 22:00:18,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 520 transitions. [2024-10-31 22:00:18,595 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 520 transitions. Word has length 9 [2024-10-31 22:00:18,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:00:18,595 INFO L471 AbstractCegarLoop]: Abstraction has 473 states and 520 transitions. [2024-10-31 22:00:18,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:18,596 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 520 transitions. [2024-10-31 22:00:18,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-31 22:00:18,596 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:00:18,597 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:18,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:00:18,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:00:18,800 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [execvpErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, execvpErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, execvpErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 197 more)] === [2024-10-31 22:00:18,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:18,801 INFO L85 PathProgramCache]: Analyzing trace with hash -631437982, now seen corresponding path program 1 times [2024-10-31 22:00:18,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:18,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973315908] [2024-10-31 22:00:18,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:18,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:19,446 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:19,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:19,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973315908] [2024-10-31 22:00:19,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973315908] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:00:19,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128220249] [2024-10-31 22:00:19,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:19,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:00:19,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:00:19,450 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:00:19,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:00:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:20,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:00:20,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:00:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:20,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:00:20,184 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:20,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128220249] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:00:20,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:00:20,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-31 22:00:20,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267372367] [2024-10-31 22:00:20,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:00:20,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:00:20,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:20,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:00:20,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:00:20,186 INFO L87 Difference]: Start difference. First operand 473 states and 520 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:20,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:00:20,264 INFO L93 Difference]: Finished difference Result 488 states and 535 transitions. [2024-10-31 22:00:20,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:00:20,265 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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 16 [2024-10-31 22:00:20,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:00:20,267 INFO L225 Difference]: With dead ends: 488 [2024-10-31 22:00:20,268 INFO L226 Difference]: Without dead ends: 488 [2024-10-31 22:00:20,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:00:20,269 INFO L432 NwaCegarLoop]: 510 mSDtfsCounter, 4 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:00:20,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1522 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:00:20,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2024-10-31 22:00:20,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2024-10-31 22:00:20,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 280 states have (on average 1.8214285714285714) internal successors, (510), 472 states have internal predecessors, (510), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-31 22:00:20,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 535 transitions. [2024-10-31 22:00:20,282 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 535 transitions. Word has length 16 [2024-10-31 22:00:20,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:00:20,282 INFO L471 AbstractCegarLoop]: Abstraction has 488 states and 535 transitions. [2024-10-31 22:00:20,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:20,283 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 535 transitions. [2024-10-31 22:00:20,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-31 22:00:20,283 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:00:20,284 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:20,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:00:20,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:00:20,484 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [execvpErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, execvpErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, execvpErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 197 more)] === [2024-10-31 22:00:20,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:20,485 INFO L85 PathProgramCache]: Analyzing trace with hash 559779720, now seen corresponding path program 2 times [2024-10-31 22:00:20,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:20,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701723418] [2024-10-31 22:00:20,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:20,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:21,204 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:21,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:21,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701723418] [2024-10-31 22:00:21,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701723418] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:00:21,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923249567] [2024-10-31 22:00:21,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:00:21,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:00:21,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:00:21,207 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:00:21,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:00:21,762 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:00:21,762 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:00:21,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:00:21,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:00:21,821 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-10-31 22:00:21,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-10-31 22:00:21,990 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-10-31 22:00:21,990 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:00:21,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923249567] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:21,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:00:21,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [11] total 12 [2024-10-31 22:00:21,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504284690] [2024-10-31 22:00:21,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:21,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:00:21,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:21,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:00:21,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:00:21,992 INFO L87 Difference]: Start difference. First operand 488 states and 535 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:22,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:00:22,490 INFO L93 Difference]: Finished difference Result 619 states and 678 transitions. [2024-10-31 22:00:22,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:00:22,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 31 [2024-10-31 22:00:22,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:00:22,494 INFO L225 Difference]: With dead ends: 619 [2024-10-31 22:00:22,494 INFO L226 Difference]: Without dead ends: 619 [2024-10-31 22:00:22,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:00:22,495 INFO L432 NwaCegarLoop]: 365 mSDtfsCounter, 467 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:00:22,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 465 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-31 22:00:22,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2024-10-31 22:00:22,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 533. [2024-10-31 22:00:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 322 states have (on average 1.8540372670807452) internal successors, (597), 514 states have internal predecessors, (597), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-31 22:00:22,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 628 transitions. [2024-10-31 22:00:22,513 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 628 transitions. Word has length 31 [2024-10-31 22:00:22,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:00:22,514 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 628 transitions. [2024-10-31 22:00:22,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:22,514 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 628 transitions. [2024-10-31 22:00:22,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-31 22:00:22,515 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:00:22,515 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:22,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:00:22,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-31 22:00:22,720 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [execvpErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, execvpErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, execvpErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 197 more)] === [2024-10-31 22:00:22,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:22,720 INFO L85 PathProgramCache]: Analyzing trace with hash 559779721, now seen corresponding path program 1 times [2024-10-31 22:00:22,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:22,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852792441] [2024-10-31 22:00:22,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:22,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:23,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:23,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852792441] [2024-10-31 22:00:23,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852792441] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:00:23,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531519915] [2024-10-31 22:00:23,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:23,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:00:23,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:00:23,476 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:00:23,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:00:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:24,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 1327 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 22:00:24,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:00:24,320 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:24,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:00:24,507 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:00:24,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531519915] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:00:24,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:00:24,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-10-31 22:00:24,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308334612] [2024-10-31 22:00:24,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:00:24,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 22:00:24,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:24,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:00:24,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:00:24,509 INFO L87 Difference]: Start difference. First operand 533 states and 628 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:24,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:00:24,607 INFO L93 Difference]: Finished difference Result 539 states and 634 transitions. [2024-10-31 22:00:24,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:00:24,608 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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 31 [2024-10-31 22:00:24,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:00:24,614 INFO L225 Difference]: With dead ends: 539 [2024-10-31 22:00:24,615 INFO L226 Difference]: Without dead ends: 539 [2024-10-31 22:00:24,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:00:24,616 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 2 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:00:24,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1519 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:00:24,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-10-31 22:00:24,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2024-10-31 22:00:24,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 328 states have (on average 1.8384146341463414) internal successors, (603), 520 states have internal predecessors, (603), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-31 22:00:24,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 634 transitions. [2024-10-31 22:00:24,632 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 634 transitions. Word has length 31 [2024-10-31 22:00:24,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:00:24,632 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 634 transitions. [2024-10-31 22:00:24,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:24,632 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 634 transitions. [2024-10-31 22:00:24,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-31 22:00:24,633 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:00:24,634 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:24,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:00:24,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e41a2d1-08b5-4578-bf18-6a80712d37bf/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-31 22:00:24,838 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [execvpErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, execvpErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, execvpErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 197 more)] === [2024-10-31 22:00:24,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:24,839 INFO L85 PathProgramCache]: Analyzing trace with hash 2010550601, now seen corresponding path program 2 times [2024-10-31 22:00:24,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:24,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903457380] [2024-10-31 22:00:24,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:24,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-31 22:00:25,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:25,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903457380] [2024-10-31 22:00:25,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903457380] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:25,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:25,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:00:25,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425424093] [2024-10-31 22:00:25,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:25,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:00:25,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:25,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:00:25,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:00:25,774 INFO L87 Difference]: Start difference. First operand 539 states and 634 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:26,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-31 22:00:27,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:00:27,868 INFO L93 Difference]: Finished difference Result 630 states and 688 transitions. [2024-10-31 22:00:27,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:00:27,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 37 [2024-10-31 22:00:27,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:00:27,872 INFO L225 Difference]: With dead ends: 630 [2024-10-31 22:00:27,872 INFO L226 Difference]: Without dead ends: 630 [2024-10-31 22:00:27,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:00:27,873 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 715 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:00:27,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 537 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-31 22:00:27,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2024-10-31 22:00:27,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 538. [2024-10-31 22:00:27,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 328 states have (on average 1.8353658536585367) internal successors, (602), 519 states have internal predecessors, (602), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-31 22:00:27,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 633 transitions. [2024-10-31 22:00:27,887 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 633 transitions. Word has length 37 [2024-10-31 22:00:27,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:00:27,888 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 633 transitions. [2024-10-31 22:00:27,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:27,888 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 633 transitions. [2024-10-31 22:00:27,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-31 22:00:27,889 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:00:27,889 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:27,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:00:27,889 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [execvpErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, execvpErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, execvpErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 197 more)] === [2024-10-31 22:00:27,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:27,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1046667048, now seen corresponding path program 1 times [2024-10-31 22:00:27,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:27,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543453275] [2024-10-31 22:00:27,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:27,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat