./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc 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_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:53:12,420 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:53:12,520 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2023-11-24 21:53:12,526 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:53:12,527 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:53:12,554 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:53:12,555 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:53:12,555 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:53:12,556 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:53:12,557 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:53:12,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:53:12,558 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:53:12,559 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:53:12,560 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:53:12,560 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:53:12,561 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:53:12,562 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:53:12,562 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:53:12,563 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:53:12,563 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:53:12,564 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:53:12,565 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:53:12,565 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:53:12,566 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:53:12,566 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:53:12,567 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:53:12,567 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:53:12,568 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:53:12,568 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:53:12,569 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:53:12,569 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:53:12,570 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:53:12,570 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:53:12,571 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:53:12,572 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:53:12,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:53:12,573 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:53:12,573 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:53:12,574 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:53:12,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:53:12,575 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:53:12,575 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:53:12,576 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:53:12,576 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:53:12,577 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_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e [2023-11-24 21:53:12,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:53:12,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:53:12,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:53:12,858 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:53:12,858 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:53:12,860 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2023-11-24 21:53:15,969 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:53:16,306 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:53:16,307 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2023-11-24 21:53:16,335 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/data/54ce96464/7e876ddc4f0e4838a5af02520a41dc36/FLAG2904396db [2023-11-24 21:53:16,351 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/data/54ce96464/7e876ddc4f0e4838a5af02520a41dc36 [2023-11-24 21:53:16,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:53:16,355 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:53:16,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:53:16,357 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:53:16,364 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:53:16,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:53:16" (1/1) ... [2023-11-24 21:53:16,366 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57624adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:16, skipping insertion in model container [2023-11-24 21:53:16,366 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:53:16" (1/1) ... [2023-11-24 21:53:16,421 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:53:16,793 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:53:16,810 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:53:16,854 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:53:16,898 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:53:16,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:16 WrapperNode [2023-11-24 21:53:16,899 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:53:16,900 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:53:16,900 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:53:16,900 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:53:16,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:16" (1/1) ... [2023-11-24 21:53:16,936 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:16" (1/1) ... [2023-11-24 21:53:16,960 INFO L138 Inliner]: procedures = 168, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 82 [2023-11-24 21:53:16,960 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:53:16,961 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:53:16,962 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:53:16,962 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:53:16,974 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:16" (1/1) ... [2023-11-24 21:53:16,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:16" (1/1) ... [2023-11-24 21:53:16,977 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:16" (1/1) ... [2023-11-24 21:53:16,995 INFO L175 MemorySlicer]: Split 24 memory accesses to 3 slices as follows [6, 9, 9]. 38 percent of accesses are in the largest equivalence class. The 21 initializations are split as follows [6, 6, 9]. The 0 writes are split as follows [0, 0, 0]. [2023-11-24 21:53:16,995 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:16" (1/1) ... [2023-11-24 21:53:16,996 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:16" (1/1) ... [2023-11-24 21:53:17,004 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:16" (1/1) ... [2023-11-24 21:53:17,008 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:16" (1/1) ... [2023-11-24 21:53:17,010 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:16" (1/1) ... [2023-11-24 21:53:17,012 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:16" (1/1) ... [2023-11-24 21:53:17,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:53:17,024 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:53:17,028 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:53:17,028 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:53:17,029 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:16" (1/1) ... [2023-11-24 21:53:17,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:53:17,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:53:17,077 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:53:17,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:53:17,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:53:17,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 21:53:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 21:53:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2023-11-24 21:53:17,118 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2023-11-24 21:53:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:53:17,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:53:17,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-24 21:53:17,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-24 21:53:17,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-24 21:53:17,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:53:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-24 21:53:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-24 21:53:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-24 21:53:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:53:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:53:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:53:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:53:17,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:53:17,330 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:53:17,333 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:53:17,581 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:53:17,610 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:53:17,612 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 21:53:17,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:53:17 BoogieIcfgContainer [2023-11-24 21:53:17,613 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:53:17,616 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:53:17,619 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:53:17,622 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:53:17,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:53:16" (1/3) ... [2023-11-24 21:53:17,624 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57864986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:53:17, skipping insertion in model container [2023-11-24 21:53:17,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:16" (2/3) ... [2023-11-24 21:53:17,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57864986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:53:17, skipping insertion in model container [2023-11-24 21:53:17,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:53:17" (3/3) ... [2023-11-24 21:53:17,631 INFO L112 eAbstractionObserver]: Analyzing ICFG bftpd_2.i [2023-11-24 21:53:17,653 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:53:17,653 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 21:53:17,760 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:53:17,769 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1bb062de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:53:17,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 21:53:17,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:53:17,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-24 21:53:17,792 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:17,794 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:17,794 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:53:17,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:17,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1554353902, now seen corresponding path program 1 times [2023-11-24 21:53:17,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:17,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779220980] [2023-11-24 21:53:17,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:17,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:18,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:53:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:18,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-24 21:53:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:18,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-24 21:53:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:18,149 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-24 21:53:18,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:18,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779220980] [2023-11-24 21:53:18,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779220980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:18,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:18,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:53:18,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060774125] [2023-11-24 21:53:18,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:18,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:53:18,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:18,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:53:18,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:18,198 INFO L87 Difference]: Start difference. First operand has 24 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:18,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:18,293 INFO L93 Difference]: Finished difference Result 28 states and 38 transitions. [2023-11-24 21:53:18,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:53:18,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2023-11-24 21:53:18,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:18,305 INFO L225 Difference]: With dead ends: 28 [2023-11-24 21:53:18,305 INFO L226 Difference]: Without dead ends: 27 [2023-11-24 21:53:18,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:18,314 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:18,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 32 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:53:18,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-24 21:53:18,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2023-11-24 21:53:18,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:53:18,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2023-11-24 21:53:18,362 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 21 [2023-11-24 21:53:18,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:18,364 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2023-11-24 21:53:18,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:18,365 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2023-11-24 21:53:18,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-24 21:53:18,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:18,367 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:18,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:53:18,368 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:53:18,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:18,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1017768982, now seen corresponding path program 1 times [2023-11-24 21:53:18,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:18,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572603389] [2023-11-24 21:53:18,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:18,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:18,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:53:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:18,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-24 21:53:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:18,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-24 21:53:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:18,641 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-24 21:53:18,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:18,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572603389] [2023-11-24 21:53:18,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572603389] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:53:18,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680777019] [2023-11-24 21:53:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:18,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:53:18,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:53:18,655 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:53:18,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 21:53:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:18,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 21:53:18,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-24 21:53:18,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:18,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680777019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:18,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 21:53:18,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-11-24 21:53:18,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161617303] [2023-11-24 21:53:18,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:18,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:53:18,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:18,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:53:18,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:53:18,851 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:18,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:18,897 INFO L93 Difference]: Finished difference Result 37 states and 53 transitions. [2023-11-24 21:53:18,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:53:18,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2023-11-24 21:53:18,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:18,902 INFO L225 Difference]: With dead ends: 37 [2023-11-24 21:53:18,903 INFO L226 Difference]: Without dead ends: 37 [2023-11-24 21:53:18,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:53:18,905 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 18 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:18,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 56 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:53:18,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-24 21:53:18,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2023-11-24 21:53:18,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:53:18,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2023-11-24 21:53:18,928 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 21 [2023-11-24 21:53:18,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:18,932 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2023-11-24 21:53:18,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:18,933 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2023-11-24 21:53:18,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-24 21:53:18,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:18,938 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:18,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-24 21:53:19,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:53:19,150 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:53:19,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:19,150 INFO L85 PathProgramCache]: Analyzing trace with hash 450619462, now seen corresponding path program 1 times [2023-11-24 21:53:19,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:19,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316703332] [2023-11-24 21:53:19,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:19,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:19,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:53:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:19,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-24 21:53:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:19,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-24 21:53:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-24 21:53:19,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:19,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316703332] [2023-11-24 21:53:19,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316703332] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:53:19,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623441085] [2023-11-24 21:53:19,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:19,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:53:19,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:53:19,340 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:53:19,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 21:53:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:19,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 21:53:19,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-24 21:53:19,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:19,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623441085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:19,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 21:53:19,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-11-24 21:53:19,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287324310] [2023-11-24 21:53:19,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:19,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:53:19,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:19,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:53:19,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:53:19,558 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:53:19,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:19,615 INFO L93 Difference]: Finished difference Result 32 states and 45 transitions. [2023-11-24 21:53:19,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:53:19,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2023-11-24 21:53:19,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:19,618 INFO L225 Difference]: With dead ends: 32 [2023-11-24 21:53:19,619 INFO L226 Difference]: Without dead ends: 30 [2023-11-24 21:53:19,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:53:19,621 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:19,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 54 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:53:19,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-24 21:53:19,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-24 21:53:19,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-24 21:53:19,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2023-11-24 21:53:19,634 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 30 [2023-11-24 21:53:19,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:19,635 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2023-11-24 21:53:19,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:53:19,635 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2023-11-24 21:53:19,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-24 21:53:19,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:19,638 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:19,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-24 21:53:19,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:53:19,845 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:53:19,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:19,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1616057073, now seen corresponding path program 1 times [2023-11-24 21:53:19,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:19,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135802540] [2023-11-24 21:53:19,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:19,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:19,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:53:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:19,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-24 21:53:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:19,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-24 21:53:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-24 21:53:19,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:19,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135802540] [2023-11-24 21:53:19,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135802540] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:53:19,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524015359] [2023-11-24 21:53:19,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:19,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:53:19,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:53:19,969 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:53:19,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 21:53:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:20,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:53:20,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:20,113 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-24 21:53:20,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:53:20,153 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-24 21:53:20,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524015359] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:53:20,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:53:20,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-11-24 21:53:20,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759515046] [2023-11-24 21:53:20,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:53:20,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:53:20,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:20,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:53:20,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:53:20,157 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-24 21:53:20,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:20,306 INFO L93 Difference]: Finished difference Result 48 states and 75 transitions. [2023-11-24 21:53:20,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:53:20,306 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 32 [2023-11-24 21:53:20,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:20,308 INFO L225 Difference]: With dead ends: 48 [2023-11-24 21:53:20,309 INFO L226 Difference]: Without dead ends: 48 [2023-11-24 21:53:20,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:53:20,310 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 64 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:20,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 77 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:53:20,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-24 21:53:20,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 33. [2023-11-24 21:53:20,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-24 21:53:20,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 47 transitions. [2023-11-24 21:53:20,322 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 47 transitions. Word has length 32 [2023-11-24 21:53:20,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:20,323 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 47 transitions. [2023-11-24 21:53:20,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-24 21:53:20,323 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 47 transitions. [2023-11-24 21:53:20,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-24 21:53:20,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:20,326 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:20,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-24 21:53:20,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:53:20,531 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:53:20,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:20,532 INFO L85 PathProgramCache]: Analyzing trace with hash 396840415, now seen corresponding path program 1 times [2023-11-24 21:53:20,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:20,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228440835] [2023-11-24 21:53:20,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:20,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:20,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:53:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:20,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-24 21:53:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:20,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-24 21:53:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:20,653 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-24 21:53:20,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:20,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228440835] [2023-11-24 21:53:20,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228440835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:20,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:20,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:53:20,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943537258] [2023-11-24 21:53:20,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:20,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:53:20,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:20,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:53:20,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:53:20,657 INFO L87 Difference]: Start difference. First operand 33 states and 47 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:53:20,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:20,721 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2023-11-24 21:53:20,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:53:20,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2023-11-24 21:53:20,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:20,723 INFO L225 Difference]: With dead ends: 33 [2023-11-24 21:53:20,723 INFO L226 Difference]: Without dead ends: 33 [2023-11-24 21:53:20,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:53:20,724 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 18 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:20,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 45 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:53:20,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-24 21:53:20,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-11-24 21:53:20,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-24 21:53:20,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 46 transitions. [2023-11-24 21:53:20,732 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 46 transitions. Word has length 36 [2023-11-24 21:53:20,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:20,733 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 46 transitions. [2023-11-24 21:53:20,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:53:20,733 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 46 transitions. [2023-11-24 21:53:20,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-24 21:53:20,741 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:20,741 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:20,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:53:20,743 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:53:20,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:20,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1679783653, now seen corresponding path program 1 times [2023-11-24 21:53:20,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:20,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697833000] [2023-11-24 21:53:20,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:20,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:20,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:53:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:21,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-24 21:53:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:21,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-24 21:53:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:21,176 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-24 21:53:21,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:21,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697833000] [2023-11-24 21:53:21,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697833000] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:53:21,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863834417] [2023-11-24 21:53:21,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:21,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:53:21,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:53:21,180 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:53:21,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 21:53:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:21,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 21:53:21,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:21,431 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-24 21:53:21,431 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:21,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863834417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:21,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 21:53:21,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-24 21:53:21,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205519565] [2023-11-24 21:53:21,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:21,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:53:21,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:21,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:53:21,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:53:21,434 INFO L87 Difference]: Start difference. First operand 33 states and 46 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:21,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:21,531 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2023-11-24 21:53:21,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:53:21,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2023-11-24 21:53:21,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:21,535 INFO L225 Difference]: With dead ends: 41 [2023-11-24 21:53:21,535 INFO L226 Difference]: Without dead ends: 41 [2023-11-24 21:53:21,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:53:21,536 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 53 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:21,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 58 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:53:21,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-24 21:53:21,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2023-11-24 21:53:21,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-24 21:53:21,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2023-11-24 21:53:21,545 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 38 [2023-11-24 21:53:21,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:21,545 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2023-11-24 21:53:21,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:21,546 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2023-11-24 21:53:21,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-24 21:53:21,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:21,549 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:21,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 21:53:21,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-24 21:53:21,750 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:53:21,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:21,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1261011509, now seen corresponding path program 1 times [2023-11-24 21:53:21,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:21,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209526304] [2023-11-24 21:53:21,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:21,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:21,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:53:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:21,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-24 21:53:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:21,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-24 21:53:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:21,976 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-24 21:53:21,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:21,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209526304] [2023-11-24 21:53:21,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209526304] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:53:21,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377814555] [2023-11-24 21:53:21,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:21,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:53:21,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:53:21,980 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:53:22,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 21:53:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:22,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 21:53:22,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:22,202 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-24 21:53:22,202 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:22,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377814555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:22,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 21:53:22,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-11-24 21:53:22,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506600254] [2023-11-24 21:53:22,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:22,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:53:22,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:22,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:53:22,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:53:22,204 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:22,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:22,274 INFO L93 Difference]: Finished difference Result 59 states and 78 transitions. [2023-11-24 21:53:22,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:53:22,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2023-11-24 21:53:22,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:22,278 INFO L225 Difference]: With dead ends: 59 [2023-11-24 21:53:22,278 INFO L226 Difference]: Without dead ends: 59 [2023-11-24 21:53:22,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:53:22,279 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 43 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:22,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 99 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:53:22,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-24 21:53:22,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2023-11-24 21:53:22,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 48 states have internal predecessors, (60), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-24 21:53:22,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 74 transitions. [2023-11-24 21:53:22,298 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 74 transitions. Word has length 40 [2023-11-24 21:53:22,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:22,298 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 74 transitions. [2023-11-24 21:53:22,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:22,299 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 74 transitions. [2023-11-24 21:53:22,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-24 21:53:22,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:22,300 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:22,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 21:53:22,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:53:22,507 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:53:22,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:22,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1535771123, now seen corresponding path program 1 times [2023-11-24 21:53:22,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:22,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315116471] [2023-11-24 21:53:22,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:22,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:53:22,536 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 21:53:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:53:22,583 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 21:53:22,583 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 21:53:22,584 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 1 remaining) [2023-11-24 21:53:22,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:53:22,589 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:22,594 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:53:22,641 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-24 21:53:22,645 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-11-24 21:53:22,649 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-24 21:53:22,656 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-24 21:53:22,658 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-24 21:53:22,659 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-24 21:53:22,662 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-24 21:53:22,666 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-24 21:53:22,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:53:22 BoogieIcfgContainer [2023-11-24 21:53:22,677 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:53:22,678 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:53:22,678 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:53:22,678 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:53:22,679 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:53:17" (3/4) ... [2023-11-24 21:53:22,681 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 21:53:22,683 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:53:22,683 INFO L158 Benchmark]: Toolchain (without parser) took 6328.41ms. Allocated memory was 155.2MB in the beginning and 190.8MB in the end (delta: 35.7MB). Free memory was 122.9MB in the beginning and 104.4MB in the end (delta: 18.5MB). Peak memory consumption was 54.9MB. Max. memory is 16.1GB. [2023-11-24 21:53:22,684 INFO L158 Benchmark]: CDTParser took 1.18ms. Allocated memory is still 109.1MB. Free memory was 68.6MB in the beginning and 68.6MB in the end (delta: 87.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:53:22,684 INFO L158 Benchmark]: CACSL2BoogieTranslator took 542.55ms. Allocated memory is still 155.2MB. Free memory was 122.5MB in the beginning and 102.7MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-24 21:53:22,685 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.64ms. Allocated memory is still 155.2MB. Free memory was 102.7MB in the beginning and 100.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:53:22,685 INFO L158 Benchmark]: Boogie Preprocessor took 53.90ms. Allocated memory is still 155.2MB. Free memory was 100.7MB in the beginning and 98.2MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:53:22,686 INFO L158 Benchmark]: RCFGBuilder took 589.40ms. Allocated memory is still 155.2MB. Free memory was 98.2MB in the beginning and 83.1MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-24 21:53:22,686 INFO L158 Benchmark]: TraceAbstraction took 5060.96ms. Allocated memory was 155.2MB in the beginning and 190.8MB in the end (delta: 35.7MB). Free memory was 82.7MB in the beginning and 104.4MB in the end (delta: -21.8MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2023-11-24 21:53:22,687 INFO L158 Benchmark]: Witness Printer took 4.91ms. Allocated memory is still 190.8MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:53:22,689 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.18ms. Allocated memory is still 109.1MB. Free memory was 68.6MB in the beginning and 68.6MB in the end (delta: 87.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 542.55ms. Allocated memory is still 155.2MB. Free memory was 122.5MB in the beginning and 102.7MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.64ms. Allocated memory is still 155.2MB. Free memory was 102.7MB in the beginning and 100.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.90ms. Allocated memory is still 155.2MB. Free memory was 100.7MB in the beginning and 98.2MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 589.40ms. Allocated memory is still 155.2MB. Free memory was 98.2MB in the beginning and 83.1MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5060.96ms. Allocated memory was 155.2MB in the beginning and 190.8MB in the end (delta: 35.7MB). Free memory was 82.7MB in the beginning and 104.4MB in the end (delta: -21.8MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * Witness Printer took 4.91ms. Allocated memory is still 190.8MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 721]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of strcmp at line 693. Possible FailurePath: [L685] int state = STATE_1; [L686] char *global = 0; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L722] CALL parse_input("c1") VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, state=0] [L692] int i = 0; VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L692] COND TRUE i < 2 [L693] EXPR commands[i].name VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] COND TRUE strcmp(commands[i].name,input) == 0 [L694] EXPR commands[i].state_needed VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L694] COND TRUE state >= commands[i].state_needed [L695] EXPR commands[i].function [L695] CALL commands[i].function() [L702] char *x = (char *)malloc(sizeof(char)); [L703] COND FALSE !(!x) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, state=0, x={-3:0}] [L706] COND FALSE !(\read(*global)) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, state=0, x={-3:0}] [L709] global = x [L710] state = STATE_2 VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={-3:0}, state=1, x={-3:0}] [L695] RET commands[i].function() [L722] RET parse_input("c1") VAL [commands={6:0}, global={-3:0}, state=1] [L723] CALL parse_input("c1") VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, state=1] [L692] int i = 0; VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, i=0, input={4:0}, input={4:0}, state=1] [L692] COND TRUE i < 2 [L693] EXPR commands[i].name VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, i=0, input={4:0}, input={4:0}, state=1] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, i=1, input={4:0}, input={4:0}, state=1] [L692] COND TRUE i < 2 [L693] EXPR commands[i].name VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, i=1, input={4:0}, input={4:0}, state=1] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, i=2, input={4:0}, input={4:0}, state=1] [L692] COND FALSE !(i < 2) VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, i=2, input={4:0}, input={4:0}, state=1] [L723] RET parse_input("c1") VAL [commands={6:0}, global={-3:0}, state=1] [L724] CALL parse_input("c2") VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, state=1] [L692] int i = 0; VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, i=0, input={5:0}, input={5:0}, state=1] [L692] COND TRUE i < 2 [L693] EXPR commands[i].name VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, i=0, input={5:0}, input={5:0}, state=1] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, i=1, input={5:0}, input={5:0}, state=1] [L692] COND TRUE i < 2 [L693] EXPR commands[i].name VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, i=1, input={5:0}, input={5:0}, state=1] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, i=2, input={5:0}, input={5:0}, state=1] [L692] COND FALSE !(i < 2) VAL [\old(global)={-3:0}, \old(state)=1, commands={6:0}, global={-3:0}, i=2, input={5:0}, input={5:0}, state=1] [L724] RET parse_input("c2") VAL [commands={6:0}, global={-3:0}, state=1] [L725] return 0; VAL [\result=0, commands={6:0}, global={-3:0}, state=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 217 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 217 mSDsluCounter, 421 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 237 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 184 IncrementalHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 184 mSDtfsCounter, 184 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 268 GetRequests, 234 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=7, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 42 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 419 NumberOfCodeBlocks, 419 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 398 ConstructedInterpolants, 0 QuantifiedInterpolants, 1256 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1160 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 293/355 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-24 21:53:22,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:53:25,441 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:53:25,582 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2023-11-24 21:53:25,592 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:53:25,594 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:53:25,641 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:53:25,642 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:53:25,643 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:53:25,644 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:53:25,650 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:53:25,650 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:53:25,651 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:53:25,652 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:53:25,653 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:53:25,654 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:53:25,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:53:25,656 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:53:25,656 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:53:25,657 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:53:25,658 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:53:25,658 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:53:25,659 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:53:25,659 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:53:25,660 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:53:25,660 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:53:25,661 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:53:25,661 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:53:25,661 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:53:25,662 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:53:25,662 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:53:25,664 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:53:25,664 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:53:25,664 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:53:25,665 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:53:25,665 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:53:25,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:53:25,666 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:53:25,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:53:25,667 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:53:25,667 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:53:25,667 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:53:25,668 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:53:25,668 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:53:25,668 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:53:25,669 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:53:25,669 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:53:25,669 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:53:25,670 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_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e [2023-11-24 21:53:26,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:53:26,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:53:26,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:53:26,125 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:53:26,125 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:53:26,127 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2023-11-24 21:53:29,456 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:53:29,858 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:53:29,859 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2023-11-24 21:53:29,878 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/data/007105943/66fd5a703b0d4273b0e29a6ad77d7f16/FLAG0f44d4318 [2023-11-24 21:53:29,894 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/data/007105943/66fd5a703b0d4273b0e29a6ad77d7f16 [2023-11-24 21:53:29,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:53:29,898 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:53:29,899 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:53:29,900 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:53:29,910 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:53:29,910 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:53:29" (1/1) ... [2023-11-24 21:53:29,912 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a000794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:29, skipping insertion in model container [2023-11-24 21:53:29,912 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:53:29" (1/1) ... [2023-11-24 21:53:29,977 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:53:30,425 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:53:30,469 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:53:30,544 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:53:30,609 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:53:30,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:30 WrapperNode [2023-11-24 21:53:30,610 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:53:30,612 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:53:30,612 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:53:30,612 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:53:30,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:30" (1/1) ... [2023-11-24 21:53:30,643 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:30" (1/1) ... [2023-11-24 21:53:30,680 INFO L138 Inliner]: procedures = 169, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 83 [2023-11-24 21:53:30,685 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:53:30,686 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:53:30,687 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:53:30,687 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:53:30,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:30" (1/1) ... [2023-11-24 21:53:30,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:30" (1/1) ... [2023-11-24 21:53:30,716 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:30" (1/1) ... [2023-11-24 21:53:30,737 INFO L175 MemorySlicer]: Split 24 memory accesses to 3 slices as follows [9, 6, 9]. 38 percent of accesses are in the largest equivalence class. The 21 initializations are split as follows [6, 6, 9]. The 0 writes are split as follows [0, 0, 0]. [2023-11-24 21:53:30,738 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:30" (1/1) ... [2023-11-24 21:53:30,738 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:30" (1/1) ... [2023-11-24 21:53:30,747 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:30" (1/1) ... [2023-11-24 21:53:30,750 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:30" (1/1) ... [2023-11-24 21:53:30,753 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:30" (1/1) ... [2023-11-24 21:53:30,755 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:30" (1/1) ... [2023-11-24 21:53:30,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:53:30,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:53:30,771 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:53:30,771 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:53:30,772 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:30" (1/1) ... [2023-11-24 21:53:30,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:53:30,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:53:30,831 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:53:30,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:53:30,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-24 21:53:30,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-24 21:53:30,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-24 21:53:30,885 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2023-11-24 21:53:30,885 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2023-11-24 21:53:30,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:53:30,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:53:30,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-24 21:53:30,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-24 21:53:30,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-24 21:53:30,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:53:30,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-24 21:53:30,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-24 21:53:30,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-24 21:53:30,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-24 21:53:30,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-24 21:53:30,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-24 21:53:30,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:53:30,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:53:31,098 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:53:31,101 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:53:31,307 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:53:31,347 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:53:31,348 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 21:53:31,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:53:31 BoogieIcfgContainer [2023-11-24 21:53:31,348 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:53:31,351 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:53:31,351 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:53:31,354 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:53:31,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:53:29" (1/3) ... [2023-11-24 21:53:31,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7cb8d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:53:31, skipping insertion in model container [2023-11-24 21:53:31,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:30" (2/3) ... [2023-11-24 21:53:31,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7cb8d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:53:31, skipping insertion in model container [2023-11-24 21:53:31,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:53:31" (3/3) ... [2023-11-24 21:53:31,358 INFO L112 eAbstractionObserver]: Analyzing ICFG bftpd_2.i [2023-11-24 21:53:31,378 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:53:31,378 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 21:53:31,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:53:31,432 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@245718c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:53:31,432 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 21:53:31,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:53:31,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-24 21:53:31,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:31,447 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:31,448 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:53:31,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:31,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1554353902, now seen corresponding path program 1 times [2023-11-24 21:53:31,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:31,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929143702] [2023-11-24 21:53:31,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:31,465 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:31,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:31,466 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:53:31,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-24 21:53:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:31,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-24 21:53:31,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-24 21:53:31,630 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:31,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:31,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929143702] [2023-11-24 21:53:31,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929143702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:31,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:31,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:53:31,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614832502] [2023-11-24 21:53:31,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:31,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 21:53:31,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:31,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 21:53:31,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 21:53:31,673 INFO L87 Difference]: Start difference. First operand has 24 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:31,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:31,701 INFO L93 Difference]: Finished difference Result 24 states and 32 transitions. [2023-11-24 21:53:31,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 21:53:31,703 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2023-11-24 21:53:31,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:31,711 INFO L225 Difference]: With dead ends: 24 [2023-11-24 21:53:31,711 INFO L226 Difference]: Without dead ends: 23 [2023-11-24 21:53:31,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 21:53:31,717 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:31,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:53:31,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-24 21:53:31,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-24 21:53:31,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:53:31,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2023-11-24 21:53:31,755 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 21 [2023-11-24 21:53:31,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:31,756 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2023-11-24 21:53:31,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:31,756 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2023-11-24 21:53:31,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-24 21:53:31,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:31,759 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:31,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-24 21:53:31,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:31,962 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:53:31,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:31,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1017768982, now seen corresponding path program 1 times [2023-11-24 21:53:31,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:31,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698704732] [2023-11-24 21:53:31,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:31,972 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:31,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:31,974 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:53:32,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-24 21:53:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:32,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 21:53:32,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:32,178 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-24 21:53:32,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:32,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:32,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698704732] [2023-11-24 21:53:32,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698704732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:32,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:32,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:53:32,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098213356] [2023-11-24 21:53:32,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:32,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:53:32,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:32,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:53:32,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:32,190 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:32,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:32,256 INFO L93 Difference]: Finished difference Result 37 states and 53 transitions. [2023-11-24 21:53:32,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:53:32,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2023-11-24 21:53:32,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:32,261 INFO L225 Difference]: With dead ends: 37 [2023-11-24 21:53:32,262 INFO L226 Difference]: Without dead ends: 37 [2023-11-24 21:53:32,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:32,264 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 18 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:32,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 56 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:53:32,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-24 21:53:32,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2023-11-24 21:53:32,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:53:32,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2023-11-24 21:53:32,274 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 21 [2023-11-24 21:53:32,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:32,275 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2023-11-24 21:53:32,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:32,275 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2023-11-24 21:53:32,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-24 21:53:32,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:32,278 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:32,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-24 21:53:32,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:32,482 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:53:32,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:32,483 INFO L85 PathProgramCache]: Analyzing trace with hash 450619462, now seen corresponding path program 1 times [2023-11-24 21:53:32,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:32,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008545084] [2023-11-24 21:53:32,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:32,484 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:32,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:32,485 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:53:32,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-24 21:53:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:32,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:53:32,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-24 21:53:32,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:53:32,751 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-24 21:53:32,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:32,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008545084] [2023-11-24 21:53:32,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008545084] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:53:32,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:53:32,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-24 21:53:32,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175141396] [2023-11-24 21:53:32,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:53:32,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:53:32,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:32,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:53:32,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:53:32,755 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:53:32,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:32,841 INFO L93 Difference]: Finished difference Result 53 states and 79 transitions. [2023-11-24 21:53:32,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:53:32,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 30 [2023-11-24 21:53:32,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:32,844 INFO L225 Difference]: With dead ends: 53 [2023-11-24 21:53:32,844 INFO L226 Difference]: Without dead ends: 53 [2023-11-24 21:53:32,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:53:32,846 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 51 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 136 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 [2023-11-24 21:53:32,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 136 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:53:32,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-24 21:53:32,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 28. [2023-11-24 21:53:32,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:53:32,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2023-11-24 21:53:32,856 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 30 [2023-11-24 21:53:32,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:32,856 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2023-11-24 21:53:32,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:53:32,857 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2023-11-24 21:53:32,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-24 21:53:32,859 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:32,859 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:32,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-24 21:53:33,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:33,062 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:53:33,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:33,063 INFO L85 PathProgramCache]: Analyzing trace with hash 2035751631, now seen corresponding path program 1 times [2023-11-24 21:53:33,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:33,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672277633] [2023-11-24 21:53:33,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:33,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:33,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:33,065 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:53:33,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-24 21:53:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:33,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 21:53:33,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:33,311 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-24 21:53:33,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:33,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:33,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672277633] [2023-11-24 21:53:33,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672277633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:33,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:33,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:53:33,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409388932] [2023-11-24 21:53:33,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:33,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:53:33,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:33,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:53:33,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:53:33,315 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:53:33,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:33,378 INFO L93 Difference]: Finished difference Result 36 states and 51 transitions. [2023-11-24 21:53:33,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:53:33,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2023-11-24 21:53:33,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:33,380 INFO L225 Difference]: With dead ends: 36 [2023-11-24 21:53:33,381 INFO L226 Difference]: Without dead ends: 34 [2023-11-24 21:53:33,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:53:33,382 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 5 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:33,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 54 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:53:33,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-24 21:53:33,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-11-24 21:53:33,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 27 states have internal predecessors, (35), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-24 21:53:33,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2023-11-24 21:53:33,392 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 36 [2023-11-24 21:53:33,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:33,393 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2023-11-24 21:53:33,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:53:33,394 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2023-11-24 21:53:33,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-24 21:53:33,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:33,396 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:33,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-24 21:53:33,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:33,599 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:53:33,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:33,600 INFO L85 PathProgramCache]: Analyzing trace with hash -484208303, now seen corresponding path program 1 times [2023-11-24 21:53:33,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:33,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820704747] [2023-11-24 21:53:33,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:33,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:33,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:33,602 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:53:33,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-24 21:53:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:33,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-24 21:53:33,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:34,197 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-24 21:53:34,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:34,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:34,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820704747] [2023-11-24 21:53:34,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820704747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:34,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:34,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:53:34,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744094758] [2023-11-24 21:53:34,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:34,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:53:34,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:34,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:53:34,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:53:34,205 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:53:34,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:34,326 INFO L93 Difference]: Finished difference Result 70 states and 100 transitions. [2023-11-24 21:53:34,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:53:34,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2023-11-24 21:53:34,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:34,334 INFO L225 Difference]: With dead ends: 70 [2023-11-24 21:53:34,339 INFO L226 Difference]: Without dead ends: 70 [2023-11-24 21:53:34,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:53:34,342 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 45 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:34,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 88 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:53:34,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-24 21:53:34,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 59. [2023-11-24 21:53:34,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 49 states have internal predecessors, (63), 7 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2023-11-24 21:53:34,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 88 transitions. [2023-11-24 21:53:34,376 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 88 transitions. Word has length 36 [2023-11-24 21:53:34,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:34,377 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 88 transitions. [2023-11-24 21:53:34,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:53:34,378 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 88 transitions. [2023-11-24 21:53:34,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-24 21:53:34,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:34,383 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:34,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-24 21:53:34,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:34,586 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:53:34,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:34,587 INFO L85 PathProgramCache]: Analyzing trace with hash 396840415, now seen corresponding path program 1 times [2023-11-24 21:53:34,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:34,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469932347] [2023-11-24 21:53:34,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:34,588 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:34,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:34,589 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:53:34,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-24 21:53:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:34,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 21:53:34,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 21:53:35,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:53:36,606 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-24 21:53:36,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 23 [2023-11-24 21:53:36,628 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-24 21:53:36,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 12 [2023-11-24 21:53:36,647 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 21:53:36,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:36,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469932347] [2023-11-24 21:53:36,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469932347] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:53:36,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:53:36,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2023-11-24 21:53:36,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70917400] [2023-11-24 21:53:36,652 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:53:36,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 21:53:36,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:36,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 21:53:36,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:53:36,656 INFO L87 Difference]: Start difference. First operand 59 states and 88 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:53:36,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:36,938 INFO L93 Difference]: Finished difference Result 79 states and 122 transitions. [2023-11-24 21:53:36,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:53:36,940 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2023-11-24 21:53:36,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:36,941 INFO L225 Difference]: With dead ends: 79 [2023-11-24 21:53:36,941 INFO L226 Difference]: Without dead ends: 79 [2023-11-24 21:53:36,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-24 21:53:36,942 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 90 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:36,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 90 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 21:53:36,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-24 21:53:36,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 61. [2023-11-24 21:53:36,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 51 states have internal predecessors, (65), 7 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2023-11-24 21:53:36,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 90 transitions. [2023-11-24 21:53:36,966 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 90 transitions. Word has length 36 [2023-11-24 21:53:36,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:36,967 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 90 transitions. [2023-11-24 21:53:36,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:53:36,967 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 90 transitions. [2023-11-24 21:53:36,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-24 21:53:36,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:36,970 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:36,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-24 21:53:37,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:37,177 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:53:37,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:37,178 INFO L85 PathProgramCache]: Analyzing trace with hash -850061345, now seen corresponding path program 1 times [2023-11-24 21:53:37,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:37,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135766645] [2023-11-24 21:53:37,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:37,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:37,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:37,180 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:53:37,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-24 21:53:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:37,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 21:53:37,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:37,310 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-24 21:53:37,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:37,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:37,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135766645] [2023-11-24 21:53:37,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135766645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:37,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:37,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:53:37,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558414167] [2023-11-24 21:53:37,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:37,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:53:37,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:37,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:53:37,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:37,316 INFO L87 Difference]: Start difference. First operand 61 states and 90 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:37,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:37,331 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2023-11-24 21:53:37,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:53:37,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2023-11-24 21:53:37,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:37,333 INFO L225 Difference]: With dead ends: 54 [2023-11-24 21:53:37,333 INFO L226 Difference]: Without dead ends: 54 [2023-11-24 21:53:37,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:37,335 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:37,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 50 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:53:37,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-24 21:53:37,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-24 21:53:37,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 46 states have internal predecessors, (59), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-24 21:53:37,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2023-11-24 21:53:37,352 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 36 [2023-11-24 21:53:37,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:37,353 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2023-11-24 21:53:37,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:37,353 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2023-11-24 21:53:37,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-24 21:53:37,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:37,355 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:37,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-24 21:53:37,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:37,559 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:53:37,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:37,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1535771123, now seen corresponding path program 1 times [2023-11-24 21:53:37,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:37,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353938858] [2023-11-24 21:53:37,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:37,560 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:37,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:37,562 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:53:37,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-24 21:53:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:53:37,730 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 21:53:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:53:37,928 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-24 21:53:37,928 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 21:53:37,930 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 1 remaining) [2023-11-24 21:53:37,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-24 21:53:38,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:38,139 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:38,142 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:53:38,181 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-24 21:53:38,185 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-11-24 21:53:38,187 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-24 21:53:38,188 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-24 21:53:38,188 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-24 21:53:38,190 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-24 21:53:38,190 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem3 [2023-11-24 21:53:38,191 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-24 21:53:38,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:53:38 BoogieIcfgContainer [2023-11-24 21:53:38,200 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:53:38,201 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:53:38,201 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:53:38,202 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:53:38,202 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:53:31" (3/4) ... [2023-11-24 21:53:38,204 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 21:53:38,206 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:53:38,206 INFO L158 Benchmark]: Toolchain (without parser) took 8308.57ms. Allocated memory was 73.4MB in the beginning and 111.1MB in the end (delta: 37.7MB). Free memory was 48.4MB in the beginning and 79.0MB in the end (delta: -30.6MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2023-11-24 21:53:38,207 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 73.4MB. Free memory is still 49.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:53:38,207 INFO L158 Benchmark]: CACSL2BoogieTranslator took 711.22ms. Allocated memory was 73.4MB in the beginning and 92.3MB in the end (delta: 18.9MB). Free memory was 48.3MB in the beginning and 63.6MB in the end (delta: -15.3MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2023-11-24 21:53:38,208 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.74ms. Allocated memory is still 92.3MB. Free memory was 63.6MB in the beginning and 61.0MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:53:38,208 INFO L158 Benchmark]: Boogie Preprocessor took 83.66ms. Allocated memory is still 92.3MB. Free memory was 61.0MB in the beginning and 58.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:53:38,208 INFO L158 Benchmark]: RCFGBuilder took 578.18ms. Allocated memory is still 92.3MB. Free memory was 58.7MB in the beginning and 66.4MB in the end (delta: -7.8MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2023-11-24 21:53:38,209 INFO L158 Benchmark]: TraceAbstraction took 6849.88ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 65.5MB in the beginning and 79.4MB in the end (delta: -13.8MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. [2023-11-24 21:53:38,209 INFO L158 Benchmark]: Witness Printer took 4.67ms. Allocated memory is still 111.1MB. Free memory was 79.4MB in the beginning and 79.0MB in the end (delta: 316.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:53:38,211 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 73.4MB. Free memory is still 49.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 711.22ms. Allocated memory was 73.4MB in the beginning and 92.3MB in the end (delta: 18.9MB). Free memory was 48.3MB in the beginning and 63.6MB in the end (delta: -15.3MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.74ms. Allocated memory is still 92.3MB. Free memory was 63.6MB in the beginning and 61.0MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.66ms. Allocated memory is still 92.3MB. Free memory was 61.0MB in the beginning and 58.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 578.18ms. Allocated memory is still 92.3MB. Free memory was 58.7MB in the beginning and 66.4MB in the end (delta: -7.8MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. * TraceAbstraction took 6849.88ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 65.5MB in the beginning and 79.4MB in the end (delta: -13.8MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. * Witness Printer took 4.67ms. Allocated memory is still 111.1MB. Free memory was 79.4MB in the beginning and 79.0MB in the end (delta: 316.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 721]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of strcmp at line 693. Possible FailurePath: [L685] int state = STATE_1; [L686] char *global = 0; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L722] CALL parse_input("c1") VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, state=0] [L692] int i = 0; VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L692] COND TRUE i < 2 [L693] EXPR commands[i].name VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L693] COND TRUE strcmp(commands[i].name,input) == 0 [L694] EXPR commands[i].state_needed VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, input={3:0}, state=0] [L694] COND TRUE state >= commands[i].state_needed [L695] EXPR commands[i].function [L695] CALL commands[i].function() [L702] char *x = (char *)malloc(sizeof(char)); [L703] COND FALSE !(!x) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, state=0, x={7:0}] [L706] COND FALSE !(\read(*global)) VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={0:0}, state=0, x={7:0}] [L709] global = x [L710] state = STATE_2 VAL [\old(global)={0:0}, \old(state)=0, commands={6:0}, global={7:0}, state=1, x={7:0}] [L695] RET commands[i].function() [L722] RET parse_input("c1") VAL [commands={6:0}, global={7:0}, state=1] [L723] CALL parse_input("c1") VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, state=1] [L692] int i = 0; VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={4:0}, input={4:0}, state=1] [L692] COND TRUE i < 2 [L693] EXPR commands[i].name VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={4:0}, input={4:0}, state=1] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, i=1, input={4:0}, input={4:0}, state=1] [L692] COND TRUE i < 2 [L693] EXPR commands[i].name VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, i=1, input={4:0}, input={4:0}, state=1] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, i=2, input={4:0}, input={4:0}, state=1] [L692] COND FALSE !(i < 2) VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, i=2, input={4:0}, input={4:0}, state=1] [L723] RET parse_input("c1") VAL [commands={6:0}, global={7:0}, state=1] [L724] CALL parse_input("c2") VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, state=1] [L692] int i = 0; VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={5:0}, input={5:0}, state=1] [L692] COND TRUE i < 2 [L693] EXPR commands[i].name VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, i=0, input={5:0}, input={5:0}, state=1] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, i=1, input={5:0}, input={5:0}, state=1] [L692] COND TRUE i < 2 [L693] EXPR commands[i].name VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, i=1, input={5:0}, input={5:0}, state=1] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, i=2, input={5:0}, input={5:0}, state=1] [L692] COND FALSE !(i < 2) VAL [\old(global)={7:0}, \old(state)=1, commands={6:0}, global={7:0}, i=2, input={5:0}, input={5:0}, state=1] [L724] RET parse_input("c2") VAL [commands={6:0}, global={7:0}, state=1] [L725] return 0; VAL [\result=0, commands={6:0}, global={7:0}, state=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.7s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 216 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 213 mSDsluCounter, 504 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 290 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 165 IncrementalHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 214 mSDtfsCounter, 165 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 279 GetRequests, 254 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=6, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 67 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 256 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 273 ConstructedInterpolants, 0 QuantifiedInterpolants, 1472 SizeOfPredicates, 14 NumberOfNonLiveVariables, 973 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 198/238 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-24 21:53:38,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4c8a6b-51c8-4dee-9a7e-981eeb5e762e/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample