./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_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme --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 [2023-11-26 10:41:22,735 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:41:22,882 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:41:22,889 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:41:22,890 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:41:22,944 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:41:22,945 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:41:22,946 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:41:22,947 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:41:22,947 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:41:22,948 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:41:22,949 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:41:22,950 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:41:22,951 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:41:22,956 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:41:22,956 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:41:22,957 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:41:22,957 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:41:22,958 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:41:22,959 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:41:22,959 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:41:22,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:41:22,960 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:41:22,961 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:41:22,962 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:41:22,962 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:41:22,963 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:41:22,965 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:41:22,965 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:41:22,966 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:41:22,966 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:41:22,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:41:22,968 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:41:22,968 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:41:22,969 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:41:22,969 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:41:22,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:41:22,970 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:41:22,971 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:41:22,971 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:41:22,972 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:41:22,972 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:41:22,973 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_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4b2b33802a1e3212162c0e55c40efaad08f7abe5e8690f0efef5fec80921b38 [2023-11-26 10:41:23,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:41:23,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:41:23,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:41:23,381 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:41:23,382 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:41:23,383 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2023-11-26 10:41:26,735 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:41:27,003 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:41:27,004 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2023-11-26 10:41:27,010 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/data/906ce92f4/2d0ed88707fc40089c32ca7ccc5540f4/FLAG0733d5001 [2023-11-26 10:41:27,024 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/data/906ce92f4/2d0ed88707fc40089c32ca7ccc5540f4 [2023-11-26 10:41:27,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:41:27,028 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:41:27,030 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:41:27,030 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:41:27,037 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:41:27,038 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:41:27" (1/1) ... [2023-11-26 10:41:27,039 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25604ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:27, skipping insertion in model container [2023-11-26 10:41:27,039 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:41:27" (1/1) ... [2023-11-26 10:41:27,061 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:41:27,320 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_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c[439,452] [2023-11-26 10:41:27,332 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:41:27,350 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:41:27,372 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_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c[439,452] [2023-11-26 10:41:27,376 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:41:27,398 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:41:27,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:27 WrapperNode [2023-11-26 10:41:27,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:41:27,400 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:41:27,400 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:41:27,400 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:41:27,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:27" (1/1) ... [2023-11-26 10:41:27,419 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:27" (1/1) ... [2023-11-26 10:41:27,440 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 17 [2023-11-26 10:41:27,441 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:41:27,442 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:41:27,442 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:41:27,442 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:41:27,457 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:27" (1/1) ... [2023-11-26 10:41:27,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:27" (1/1) ... [2023-11-26 10:41:27,459 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:27" (1/1) ... [2023-11-26 10:41:27,480 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]. [2023-11-26 10:41:27,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:27" (1/1) ... [2023-11-26 10:41:27,486 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:27" (1/1) ... [2023-11-26 10:41:27,492 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:27" (1/1) ... [2023-11-26 10:41:27,493 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:27" (1/1) ... [2023-11-26 10:41:27,495 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:27" (1/1) ... [2023-11-26 10:41:27,496 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:27" (1/1) ... [2023-11-26 10:41:27,499 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:41:27,500 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:41:27,500 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:41:27,500 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:41:27,502 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:27" (1/1) ... [2023-11-26 10:41:27,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:41:27,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:27,544 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:41:27,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:41:27,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:41:27,622 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2023-11-26 10:41:27,622 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2023-11-26 10:41:27,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:41:27,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:41:27,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:41:27,624 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2023-11-26 10:41:27,626 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2023-11-26 10:41:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:41:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:41:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:41:27,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:41:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:41:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:41:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:41:27,853 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:41:27,857 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:41:28,066 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:41:28,114 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:41:28,115 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 10:41:28,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:41:28 BoogieIcfgContainer [2023-11-26 10:41:28,117 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:41:28,120 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:41:28,120 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:41:28,127 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:41:28,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:41:27" (1/3) ... [2023-11-26 10:41:28,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@639264ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:41:28, skipping insertion in model container [2023-11-26 10:41:28,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:27" (2/3) ... [2023-11-26 10:41:28,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@639264ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:41:28, skipping insertion in model container [2023-11-26 10:41:28,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:41:28" (3/3) ... [2023-11-26 10:41:28,135 INFO L112 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2023-11-26 10:41:28,160 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:41:28,161 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:41:28,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:41:28,240 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;@15efe805, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:41:28,240 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:41:28,246 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) [2023-11-26 10:41:28,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 10:41:28,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:28,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 10:41:28,258 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:28,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:28,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1859053861, now seen corresponding path program 1 times [2023-11-26 10:41:28,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:28,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797951470] [2023-11-26 10:41:28,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:28,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:28,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:28,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:28,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797951470] [2023-11-26 10:41:28,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797951470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:28,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:28,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:41:28,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043160923] [2023-11-26 10:41:28,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:28,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:41:28,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:28,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:41:28,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:41:28,827 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) [2023-11-26 10:41:28,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:28,956 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2023-11-26 10:41:28,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:41:28,960 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 [2023-11-26 10:41:28,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:28,968 INFO L225 Difference]: With dead ends: 28 [2023-11-26 10:41:28,969 INFO L226 Difference]: Without dead ends: 13 [2023-11-26 10:41:28,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:41:28,992 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 [2023-11-26 10:41:28,994 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] [2023-11-26 10:41:29,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-26 10:41:29,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2023-11-26 10:41:29,031 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) [2023-11-26 10:41:29,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-11-26 10:41:29,033 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2023-11-26 10:41:29,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:29,034 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2023-11-26 10:41:29,035 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) [2023-11-26 10:41:29,035 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-11-26 10:41:29,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-26 10:41:29,036 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:29,036 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:29,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:41:29,037 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:29,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:29,040 INFO L85 PathProgramCache]: Analyzing trace with hash -602700150, now seen corresponding path program 1 times [2023-11-26 10:41:29,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:29,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411279424] [2023-11-26 10:41:29,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:29,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:29,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:29,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:29,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411279424] [2023-11-26 10:41:29,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411279424] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:29,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792537699] [2023-11-26 10:41:29,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:29,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:29,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:29,642 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:29,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:41:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:29,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-26 10:41:29,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:29,838 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 [2023-11-26 10:41:29,919 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 [2023-11-26 10:41:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:29,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:41:30,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:30,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792537699] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:41:30,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:41:30,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 17 [2023-11-26 10:41:30,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612940545] [2023-11-26 10:41:30,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:41:30,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 10:41:30,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:30,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 10:41:30,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-26 10:41:30,243 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) [2023-11-26 10:41:30,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:30,545 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2023-11-26 10:41:30,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 10:41:30,546 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 [2023-11-26 10:41:30,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:30,547 INFO L225 Difference]: With dead ends: 27 [2023-11-26 10:41:30,547 INFO L226 Difference]: Without dead ends: 23 [2023-11-26 10:41:30,549 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 [2023-11-26 10:41:30,551 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 [2023-11-26 10:41:30,552 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] [2023-11-26 10:41:30,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-26 10:41:30,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2023-11-26 10:41:30,563 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) [2023-11-26 10:41:30,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2023-11-26 10:41:30,565 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 11 [2023-11-26 10:41:30,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:30,566 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2023-11-26 10:41:30,567 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) [2023-11-26 10:41:30,567 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2023-11-26 10:41:30,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-26 10:41:30,569 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:30,569 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-11-26 10:41:30,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:30,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:30,777 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:30,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:30,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1453417322, now seen corresponding path program 2 times [2023-11-26 10:41:30,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:30,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766471623] [2023-11-26 10:41:30,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:30,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:31,516 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:31,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:31,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766471623] [2023-11-26 10:41:31,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766471623] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:31,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239695503] [2023-11-26 10:41:31,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:41:31,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:31,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:31,524 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:31,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:41:31,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 10:41:31,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:41:31,622 WARN L260 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 87 conjunts are in the unsatisfiable core [2023-11-26 10:41:31,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:31,644 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 [2023-11-26 10:41:31,764 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 [2023-11-26 10:41:31,806 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 [2023-11-26 10:41:31,838 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 [2023-11-26 10:41:31,892 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:31,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:41:32,399 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:32,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239695503] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:41:32,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:41:32,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 17] total 37 [2023-11-26 10:41:32,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309059567] [2023-11-26 10:41:32,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:41:32,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-26 10:41:32,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:32,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-26 10:41:32,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1231, Unknown=0, NotChecked=0, Total=1406 [2023-11-26 10:41:32,405 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) [2023-11-26 10:41:33,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:33,033 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2023-11-26 10:41:33,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-26 10:41:33,034 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 [2023-11-26 10:41:33,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:33,035 INFO L225 Difference]: With dead ends: 47 [2023-11-26 10:41:33,035 INFO L226 Difference]: Without dead ends: 43 [2023-11-26 10:41:33,037 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 [2023-11-26 10:41:33,038 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 [2023-11-26 10:41:33,039 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] [2023-11-26 10:41:33,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-26 10:41:33,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2023-11-26 10:41:33,048 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) [2023-11-26 10:41:33,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2023-11-26 10:41:33,049 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 21 [2023-11-26 10:41:33,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:33,050 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2023-11-26 10:41:33,050 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) [2023-11-26 10:41:33,051 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2023-11-26 10:41:33,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-26 10:41:33,052 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:33,052 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2023-11-26 10:41:33,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:33,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:33,259 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:33,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:33,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1048095446, now seen corresponding path program 3 times [2023-11-26 10:41:33,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:33,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702100101] [2023-11-26 10:41:33,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:33,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:35,121 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:35,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:35,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702100101] [2023-11-26 10:41:35,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702100101] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:35,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431637497] [2023-11-26 10:41:35,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 10:41:35,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:35,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:35,128 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:35,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:41:35,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-26 10:41:35,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:41:35,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-26 10:41:35,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:35,249 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 [2023-11-26 10:41:35,360 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 [2023-11-26 10:41:35,501 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-26 10:41:35,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:41:35,727 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-26 10:41:35,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431637497] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:41:35,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:41:35,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 9, 9] total 42 [2023-11-26 10:41:35,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086128639] [2023-11-26 10:41:35,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:41:35,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-26 10:41:35,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:35,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-26 10:41:35,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1510, Unknown=0, NotChecked=0, Total=1722 [2023-11-26 10:41:35,732 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) [2023-11-26 10:41:36,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:36,688 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2023-11-26 10:41:36,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-26 10:41:36,689 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 [2023-11-26 10:41:36,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:36,689 INFO L225 Difference]: With dead ends: 49 [2023-11-26 10:41:36,689 INFO L226 Difference]: Without dead ends: 0 [2023-11-26 10:41:36,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 68 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 891 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=683, Invalid=3873, Unknown=0, NotChecked=0, Total=4556 [2023-11-26 10:41:36,693 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 [2023-11-26 10:41:36,693 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] [2023-11-26 10:41:36,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-26 10:41:36,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-26 10:41:36,694 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) [2023-11-26 10:41:36,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-26 10:41:36,695 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2023-11-26 10:41:36,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:36,695 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 10:41:36,695 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) [2023-11-26 10:41:36,698 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-26 10:41:36,699 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-26 10:41:36,701 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fooErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-26 10:41:36,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:36,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:36,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-26 10:41:37,409 INFO L899 garLoopResultBuilder]: For program point fooEXIT(lines 11 20) no Hoare annotation was computed. [2023-11-26 10:41:37,409 INFO L899 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2023-11-26 10:41:37,409 INFO L899 garLoopResultBuilder]: For program point fooErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2023-11-26 10:41:37,409 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 19) no Hoare annotation was computed. [2023-11-26 10:41:37,410 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)))) [2023-11-26 10:41:37,410 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 19) no Hoare annotation was computed. [2023-11-26 10:41:37,410 INFO L899 garLoopResultBuilder]: For program point L12-1(lines 11 20) no Hoare annotation was computed. [2023-11-26 10:41:37,411 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)))) [2023-11-26 10:41:37,411 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-26 10:41:37,411 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) [2023-11-26 10:41:37,411 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2023-11-26 10:41:37,411 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-26 10:41:37,417 INFO L899 garLoopResultBuilder]: For program point plusFINAL(lines 6 9) no Hoare annotation was computed. [2023-11-26 10:41:37,418 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)))) [2023-11-26 10:41:37,418 INFO L899 garLoopResultBuilder]: For program point plusEXIT(lines 6 9) no Hoare annotation was computed. [2023-11-26 10:41:37,418 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))))) [2023-11-26 10:41:37,422 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-11-26 10:41:37,427 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 10:41:37,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 10:41:37 BoogieIcfgContainer [2023-11-26 10:41:37,435 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 10:41:37,437 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:41:37,438 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:41:37,438 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:41:37,438 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:41:28" (3/4) ... [2023-11-26 10:41:37,441 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 10:41:37,444 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2023-11-26 10:41:37,445 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure plus [2023-11-26 10:41:37,448 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-26 10:41:37,448 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-26 10:41:37,448 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-26 10:41:37,449 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-26 10:41:37,531 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 10:41:37,531 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 10:41:37,531 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:41:37,532 INFO L158 Benchmark]: Toolchain (without parser) took 10503.51ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 128.2MB in the beginning and 119.3MB in the end (delta: 8.9MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. [2023-11-26 10:41:37,533 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 123.7MB. Free memory is still 96.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:41:37,533 INFO L158 Benchmark]: CACSL2BoogieTranslator took 369.16ms. Allocated memory is still 159.4MB. Free memory was 128.2MB in the beginning and 117.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 10:41:37,533 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.14ms. Allocated memory is still 159.4MB. Free memory was 117.7MB in the beginning and 116.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:41:37,534 INFO L158 Benchmark]: Boogie Preprocessor took 57.16ms. Allocated memory is still 159.4MB. Free memory was 116.4MB in the beginning and 114.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:41:37,534 INFO L158 Benchmark]: RCFGBuilder took 617.37ms. Allocated memory is still 159.4MB. Free memory was 114.9MB in the beginning and 121.9MB in the end (delta: -7.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:41:37,534 INFO L158 Benchmark]: TraceAbstraction took 9315.59ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 121.2MB in the beginning and 123.5MB in the end (delta: -2.3MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2023-11-26 10:41:37,535 INFO L158 Benchmark]: Witness Printer took 93.81ms. Allocated memory is still 192.9MB. Free memory was 123.5MB in the beginning and 119.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:41:37,540 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 123.7MB. Free memory is still 96.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 369.16ms. Allocated memory is still 159.4MB. Free memory was 128.2MB in the beginning and 117.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.14ms. Allocated memory is still 159.4MB. Free memory was 117.7MB in the beginning and 116.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.16ms. Allocated memory is still 159.4MB. Free memory was 116.4MB in the beginning and 114.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 617.37ms. Allocated memory is still 159.4MB. Free memory was 114.9MB in the beginning and 121.9MB in the end (delta: -7.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 9315.59ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 121.2MB in the beginning and 123.5MB in the end (delta: -2.3MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. * Witness Printer took 93.81ms. Allocated memory is still 192.9MB. Free memory was 123.5MB in the beginning and 119.3MB 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: 9.2s, OverallIterations: 4, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, 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, 3.2s 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: 0.0s 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, 5.2s 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! [2023-11-26 10:41:37,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d93b23e4-bf6e-4c32-8c4b-6d042fa4c483/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE