./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/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_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4b2b33802a1e3212162c0e55c40efaad08f7abe5e8690f0efef5fec80921b38 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:54:31,664 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:54:31,797 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:54:31,805 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:54:31,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:54:31,848 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:54:31,849 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:54:31,850 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:54:31,851 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:54:31,857 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:54:31,857 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:54:31,858 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:54:31,859 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:54:31,861 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:54:31,862 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:54:31,862 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:54:31,863 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:54:31,864 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:54:31,864 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:54:31,865 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:54:31,865 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:54:31,866 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:54:31,867 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:54:31,867 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:54:31,868 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:54:31,868 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:54:31,869 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:54:31,870 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:54:31,871 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:54:31,871 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:54:31,873 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:54:31,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:54:31,874 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:54:31,874 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:54:31,875 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:54:31,875 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:54:31,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:54:31,876 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:54:31,876 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:54:31,876 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:54:31,877 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:54:31,877 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:54:31,878 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_20c7afdf-b85a-4412-b98d-9928e8a020a6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4b2b33802a1e3212162c0e55c40efaad08f7abe5e8690f0efef5fec80921b38 [2023-11-24 21:54:32,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:54:32,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:54:32,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:54:32,213 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:54:32,214 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:54:32,215 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2023-11-24 21:54:35,726 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:54:35,948 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:54:35,949 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2023-11-24 21:54:35,956 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/data/b67e8a372/356566b3964a4c8985321aa5e0733776/FLAG1f956cf2d [2023-11-24 21:54:35,971 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/data/b67e8a372/356566b3964a4c8985321aa5e0733776 [2023-11-24 21:54:35,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:54:35,975 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:54:35,977 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:54:35,977 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:54:35,982 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:54:35,983 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:54:35" (1/1) ... [2023-11-24 21:54:35,984 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77e6403f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:35, skipping insertion in model container [2023-11-24 21:54:35,985 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:54:35" (1/1) ... [2023-11-24 21:54:36,013 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:54:36,165 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c[439,452] [2023-11-24 21:54:36,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:54:36,191 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:54:36,207 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c[439,452] [2023-11-24 21:54:36,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:54:36,228 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:54:36,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:36 WrapperNode [2023-11-24 21:54:36,229 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:54:36,231 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:54:36,231 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:54:36,231 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:54:36,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:36" (1/1) ... [2023-11-24 21:54:36,248 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:36" (1/1) ... [2023-11-24 21:54:36,264 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 17 [2023-11-24 21:54:36,265 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:54:36,265 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:54:36,265 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:54:36,265 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:54:36,276 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:36" (1/1) ... [2023-11-24 21:54:36,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:36" (1/1) ... [2023-11-24 21:54:36,278 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:36" (1/1) ... [2023-11-24 21:54:36,292 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 2 writes are split as follows [0, 2]. [2023-11-24 21:54:36,292 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:36" (1/1) ... [2023-11-24 21:54:36,293 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:36" (1/1) ... [2023-11-24 21:54:36,297 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:36" (1/1) ... [2023-11-24 21:54:36,299 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:36" (1/1) ... [2023-11-24 21:54:36,300 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:36" (1/1) ... [2023-11-24 21:54:36,301 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:36" (1/1) ... [2023-11-24 21:54:36,303 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:54:36,304 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:54:36,305 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:54:36,305 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:54:36,306 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:36" (1/1) ... [2023-11-24 21:54:36,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:54:36,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:54:36,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:54:36,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:54:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:54:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2023-11-24 21:54:36,381 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2023-11-24 21:54:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:54:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:54:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:54:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2023-11-24 21:54:36,382 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2023-11-24 21:54:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:54:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:54:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:54:36,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:54:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:54:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 21:54:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:54:36,461 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:54:36,463 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:54:36,589 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:54:36,623 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:54:36,623 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:54:36,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:54:36 BoogieIcfgContainer [2023-11-24 21:54:36,624 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:54:36,627 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:54:36,628 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:54:36,631 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:54:36,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:54:35" (1/3) ... [2023-11-24 21:54:36,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45111e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:54:36, skipping insertion in model container [2023-11-24 21:54:36,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:36" (2/3) ... [2023-11-24 21:54:36,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45111e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:54:36, skipping insertion in model container [2023-11-24 21:54:36,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:54:36" (3/3) ... [2023-11-24 21:54:36,635 INFO L112 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2023-11-24 21:54:36,658 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:54:36,658 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 21:54:36,709 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:54:36,717 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@feae651, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:54:36,717 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 21:54:36,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:54:36,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 21:54:36,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:36,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 21:54:36,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:36,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:36,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1859053861, now seen corresponding path program 1 times [2023-11-24 21:54:36,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:36,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651134047] [2023-11-24 21:54:36,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:36,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:37,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:37,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:37,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651134047] [2023-11-24 21:54:37,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651134047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:37,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:37,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:54:37,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574453106] [2023-11-24 21:54:37,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:37,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:54:37,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:37,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:54:37,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:54:37,414 INFO L87 Difference]: Start difference. First operand has 16 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:37,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:37,585 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2023-11-24 21:54:37,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:54:37,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-24 21:54:37,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:37,599 INFO L225 Difference]: With dead ends: 28 [2023-11-24 21:54:37,599 INFO L226 Difference]: Without dead ends: 13 [2023-11-24 21:54:37,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:54:37,608 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:37,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 41 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:54:37,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-24 21:54:37,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2023-11-24 21:54:37,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:37,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-11-24 21:54:37,662 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2023-11-24 21:54:37,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:37,663 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2023-11-24 21:54:37,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:37,665 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-11-24 21:54:37,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:54:37,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:37,667 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:37,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:54:37,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:37,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:37,670 INFO L85 PathProgramCache]: Analyzing trace with hash -602700150, now seen corresponding path program 1 times [2023-11-24 21:54:37,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:37,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741388889] [2023-11-24 21:54:37,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:37,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:38,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:38,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:38,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741388889] [2023-11-24 21:54:38,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741388889] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:54:38,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491813113] [2023-11-24 21:54:38,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:38,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:38,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:54:38,197 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:54:38,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 21:54:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:38,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-24 21:54:38,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:38,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-24 21:54:38,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-24 21:54:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:38,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:54:38,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:38,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491813113] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:54:38,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:54:38,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 17 [2023-11-24 21:54:38,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678279080] [2023-11-24 21:54:38,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:54:38,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-24 21:54:38,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:38,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-24 21:54:38,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-24 21:54:38,808 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 18 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 11 states have internal predecessors, (17), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:39,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:39,120 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2023-11-24 21:54:39,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-24 21:54:39,121 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 11 states have internal predecessors, (17), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-24 21:54:39,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:39,122 INFO L225 Difference]: With dead ends: 27 [2023-11-24 21:54:39,122 INFO L226 Difference]: Without dead ends: 23 [2023-11-24 21:54:39,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2023-11-24 21:54:39,126 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 9 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:39,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 35 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:54:39,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-24 21:54:39,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2023-11-24 21:54:39,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:39,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2023-11-24 21:54:39,142 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 11 [2023-11-24 21:54:39,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:39,143 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2023-11-24 21:54:39,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 11 states have internal predecessors, (17), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:39,143 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2023-11-24 21:54:39,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-24 21:54:39,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:39,146 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-11-24 21:54:39,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:39,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:39,353 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:39,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:39,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1453417322, now seen corresponding path program 2 times [2023-11-24 21:54:39,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:39,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119467473] [2023-11-24 21:54:39,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:39,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:40,123 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:40,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:40,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119467473] [2023-11-24 21:54:40,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119467473] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:54:40,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357186329] [2023-11-24 21:54:40,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:54:40,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:40,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:54:40,126 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:54:40,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 21:54:40,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 21:54:40,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:54:40,219 WARN L260 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 87 conjunts are in the unsatisfiable core [2023-11-24 21:54:40,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:40,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-24 21:54:40,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-24 21:54:40,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-24 21:54:40,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-24 21:54:40,464 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:40,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:54:40,946 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:40,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357186329] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:54:40,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:54:40,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 17] total 37 [2023-11-24 21:54:40,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774558550] [2023-11-24 21:54:40,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:54:40,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-24 21:54:40,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:40,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-24 21:54:40,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1231, Unknown=0, NotChecked=0, Total=1406 [2023-11-24 21:54:40,951 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 38 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 21 states have internal predecessors, (33), 16 states have call successors, (16), 16 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:41,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:41,617 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2023-11-24 21:54:41,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-24 21:54:41,618 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 21 states have internal predecessors, (33), 16 states have call successors, (16), 16 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-24 21:54:41,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:41,619 INFO L225 Difference]: With dead ends: 47 [2023-11-24 21:54:41,619 INFO L226 Difference]: Without dead ends: 43 [2023-11-24 21:54:41,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=443, Invalid=2749, Unknown=0, NotChecked=0, Total=3192 [2023-11-24 21:54:41,623 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 31 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:41,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 28 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:54:41,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-24 21:54:41,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2023-11-24 21:54:41,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 15 states have call successors, (15), 15 states have call predecessors, (15), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:41,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2023-11-24 21:54:41,635 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 21 [2023-11-24 21:54:41,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:41,636 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2023-11-24 21:54:41,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 21 states have internal predecessors, (33), 16 states have call successors, (16), 16 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:41,636 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2023-11-24 21:54:41,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-24 21:54:41,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:41,639 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2023-11-24 21:54:41,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:41,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:41,846 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:41,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:41,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1048095446, now seen corresponding path program 3 times [2023-11-24 21:54:41,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:41,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901652326] [2023-11-24 21:54:41,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:41,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:44,058 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:44,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:44,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901652326] [2023-11-24 21:54:44,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901652326] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:54:44,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884139649] [2023-11-24 21:54:44,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 21:54:44,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:44,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:54:44,062 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:54:44,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 21:54:44,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-24 21:54:44,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:54:44,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-24 21:54:44,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:44,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-24 21:54:44,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-24 21:54:44,483 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-24 21:54:44,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:54:44,731 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-24 21:54:44,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884139649] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:54:44,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:54:44,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 9, 9] total 42 [2023-11-24 21:54:44,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884547668] [2023-11-24 21:54:44,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:54:44,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-24 21:54:44,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:44,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-24 21:54:44,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1510, Unknown=0, NotChecked=0, Total=1722 [2023-11-24 21:54:44,736 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 42 states, 32 states have (on average 1.25) internal successors, (40), 25 states have internal predecessors, (40), 18 states have call successors, (20), 18 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:45,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:45,672 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2023-11-24 21:54:45,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-24 21:54:45,672 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 32 states have (on average 1.25) internal successors, (40), 25 states have internal predecessors, (40), 18 states have call successors, (20), 18 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-11-24 21:54:45,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:45,673 INFO L225 Difference]: With dead ends: 49 [2023-11-24 21:54:45,673 INFO L226 Difference]: Without dead ends: 0 [2023-11-24 21:54:45,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 68 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 891 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=683, Invalid=3873, Unknown=0, NotChecked=0, Total=4556 [2023-11-24 21:54:45,676 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 39 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:45,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 9 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:54:45,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-24 21:54:45,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-24 21:54:45,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:45,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-24 21:54:45,678 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2023-11-24 21:54:45,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:45,679 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-24 21:54:45,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 32 states have (on average 1.25) internal successors, (40), 25 states have internal predecessors, (40), 18 states have call successors, (20), 18 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:45,679 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-24 21:54:45,679 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-24 21:54:45,686 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fooErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-24 21:54:45,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:45,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:45,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-24 21:54:46,414 INFO L899 garLoopResultBuilder]: For program point fooEXIT(lines 11 20) no Hoare annotation was computed. [2023-11-24 21:54:46,415 INFO L899 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2023-11-24 21:54:46,415 INFO L899 garLoopResultBuilder]: For program point fooErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2023-11-24 21:54:46,415 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 19) no Hoare annotation was computed. [2023-11-24 21:54:46,416 INFO L895 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int#1| |foo_#in~p.base|) |foo_#in~p.offset|)) (.cse1 (select (select |#memory_int#1| foo_~p.base) foo_~p.offset)) (.cse2 (select (select |old(#memory_int#1)| |foo_#in~p.base|) |foo_#in~p.offset|))) (and (or (and (<= .cse0 15) (<= .cse1 15)) (< 15 .cse2)) (or (and (= .cse1 10) (= .cse0 10)) (not (= .cse2 10))) (or (and (<= .cse1 19) (<= .cse0 20)) (< 20 .cse2)) (or (< 13 .cse2) (and (<= .cse1 13) (<= .cse0 13))) (or (<= .cse0 17) (< 17 .cse2)) (or (< 11 .cse2) (and (<= .cse0 11) (<= .cse1 11))) (or (and (<= .cse1 12) (<= .cse0 12)) (< 12 .cse2)) (or (< 16 .cse2) (and (<= .cse0 16) (<= .cse1 16))) (or (and (<= .cse0 14) (<= .cse1 14)) (< 14 .cse2)))) [2023-11-24 21:54:46,416 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 19) no Hoare annotation was computed. [2023-11-24 21:54:46,416 INFO L899 garLoopResultBuilder]: For program point L12-1(lines 11 20) no Hoare annotation was computed. [2023-11-24 21:54:46,416 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 20) the Hoare annotation is: (let ((.cse0 (select (select |old(#memory_int#1)| |foo_#in~p.base|) |foo_#in~p.offset|)) (.cse1 (select (select |#memory_int#1| |foo_#in~p.base|) |foo_#in~p.offset|))) (and (or (not (= .cse0 10)) (= .cse1 10)) (or (<= .cse1 16) (< 16 .cse0)) (or (< 12 .cse0) (<= .cse1 12)) (or (< 11 .cse0) (<= .cse1 11)) (or (<= .cse1 17) (< 17 .cse0)) (or (<= .cse1 14) (< 14 .cse0)) (or (<= .cse1 15) (< 15 .cse0)) (or (< 13 .cse0) (<= .cse1 13)) (or (< 20 .cse0) (<= .cse1 20)))) [2023-11-24 21:54:46,417 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-24 21:54:46,417 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (= (select (select |#memory_int#1| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 10) [2023-11-24 21:54:46,417 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2023-11-24 21:54:46,417 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-24 21:54:46,417 INFO L899 garLoopResultBuilder]: For program point plusFINAL(lines 6 9) no Hoare annotation was computed. [2023-11-24 21:54:46,418 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 6 9) the Hoare annotation is: (let ((.cse0 (select (select |old(#memory_int#1)| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse1 (select (select |#memory_int#1| |plus_#in~p.base|) |plus_#in~p.offset|))) (and (or (< 13 .cse0) (<= .cse1 13)) (or (< 15 .cse0) (<= .cse1 15)) (or (<= .cse1 16) (< 16 .cse0)) (or (< 19 .cse0) (<= .cse1 19)) (or (< 11 .cse0) (<= .cse1 11)) (or (not (= .cse0 10)) (= .cse1 10)) (or (< 12 .cse0) (<= .cse1 12)) (or (< 14 .cse0) (<= .cse1 14)))) [2023-11-24 21:54:46,418 INFO L899 garLoopResultBuilder]: For program point plusEXIT(lines 6 9) no Hoare annotation was computed. [2023-11-24 21:54:46,418 INFO L895 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: (let ((.cse0 (select (select |old(#memory_int#1)| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse2 (select (select |#memory_int#1| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse1 (select (select |#memory_int#1| plus_~p.base) plus_~p.offset))) (and (or (not (= .cse0 10)) (and (<= .cse1 11) (<= .cse2 11))) (or (< 15 .cse0) (and (<= .cse2 16) (<= .cse1 16))) (or (< 16 .cse0) (and (<= .cse1 17) (<= .cse2 19))) (or (< 13 .cse0) (and (<= .cse1 14) (<= .cse2 14))) (or (< 19 .cse0) (<= .cse1 20)) (or (and (<= .cse1 13) (<= .cse2 13)) (< 12 .cse0)) (or (< 14 .cse0) (and (<= .cse1 15) (<= .cse2 15))) (or (< 11 .cse0) (and (<= .cse2 12) (<= .cse1 12))))) [2023-11-24 21:54:46,426 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-11-24 21:54:46,433 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:54:46,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:54:46 BoogieIcfgContainer [2023-11-24 21:54:46,441 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:54:46,443 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:54:46,443 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:54:46,443 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:54:46,444 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:54:36" (3/4) ... [2023-11-24 21:54:46,446 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 21:54:46,450 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2023-11-24 21:54:46,450 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure plus [2023-11-24 21:54:46,456 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-24 21:54:46,456 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-24 21:54:46,457 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-24 21:54:46,457 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-24 21:54:46,543 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 21:54:46,543 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 21:54:46,543 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:54:46,544 INFO L158 Benchmark]: Toolchain (without parser) took 10568.80ms. Allocated memory was 151.0MB in the beginning and 220.2MB in the end (delta: 69.2MB). Free memory was 112.1MB in the beginning and 66.4MB in the end (delta: 45.7MB). Peak memory consumption was 116.4MB. Max. memory is 16.1GB. [2023-11-24 21:54:46,544 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 113.2MB. Free memory is still 67.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:54:46,545 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.86ms. Allocated memory is still 151.0MB. Free memory was 111.7MB in the beginning and 101.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 21:54:46,545 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.12ms. Allocated memory is still 151.0MB. Free memory was 101.7MB in the beginning and 100.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:54:46,546 INFO L158 Benchmark]: Boogie Preprocessor took 38.39ms. Allocated memory is still 151.0MB. Free memory was 100.4MB in the beginning and 98.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:54:46,546 INFO L158 Benchmark]: RCFGBuilder took 319.82ms. Allocated memory is still 151.0MB. Free memory was 98.7MB in the beginning and 87.4MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 21:54:46,547 INFO L158 Benchmark]: TraceAbstraction took 9815.25ms. Allocated memory was 151.0MB in the beginning and 220.2MB in the end (delta: 69.2MB). Free memory was 86.6MB in the beginning and 70.7MB in the end (delta: 15.9MB). Peak memory consumption was 87.0MB. Max. memory is 16.1GB. [2023-11-24 21:54:46,547 INFO L158 Benchmark]: Witness Printer took 100.57ms. Allocated memory is still 220.2MB. Free memory was 70.7MB in the beginning and 66.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:54:46,549 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 113.2MB. Free memory is still 67.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 252.86ms. Allocated memory is still 151.0MB. Free memory was 111.7MB in the beginning and 101.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.12ms. Allocated memory is still 151.0MB. Free memory was 101.7MB in the beginning and 100.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.39ms. Allocated memory is still 151.0MB. Free memory was 100.4MB in the beginning and 98.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 319.82ms. Allocated memory is still 151.0MB. Free memory was 98.7MB in the beginning and 87.4MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 9815.25ms. Allocated memory was 151.0MB in the beginning and 220.2MB in the end (delta: 69.2MB). Free memory was 86.6MB in the beginning and 70.7MB in the end (delta: 15.9MB). Peak memory consumption was 87.0MB. Max. memory is 16.1GB. * Witness Printer took 100.57ms. Allocated memory is still 220.2MB. Free memory was 70.7MB in the beginning and 66.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.7s, OverallIterations: 4, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 81 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 81 mSDsluCounter, 113 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 87 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 399 IncrementalHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 26 mSDtfsCounter, 399 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 253 GetRequests, 101 SyntacticMatches, 4 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1754 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=3, InterpolantAutomatonStates: 104, 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, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 37 PreInvPairs, 37 NumberOfFragments, 645 HoareAnnotationTreeSize, 37 FomulaSimplifications, 232 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 184 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 152 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 215 ConstructedInterpolants, 0 QuantifiedInterpolants, 1065 SizeOfPredicates, 42 NumberOfNonLiveVariables, 366 ConjunctsInSsa, 170 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 236/426 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-24 21:54:46,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7afdf-b85a-4412-b98d-9928e8a020a6/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: TRUE