./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu --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 5a7a61549e909154c33d5cf68876338c8745b83dde5aedff258c17f34600afc7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:05:20,972 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:05:21,059 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:05:21,065 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:05:21,065 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:05:21,093 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:05:21,094 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:05:21,094 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:05:21,095 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:05:21,096 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:05:21,097 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:05:21,097 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:05:21,098 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:05:21,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:05:21,099 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:05:21,100 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:05:21,100 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:05:21,101 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:05:21,102 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:05:21,102 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:05:21,103 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:05:21,109 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:05:21,109 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:05:21,110 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:05:21,110 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:05:21,111 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:05:21,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:05:21,112 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:05:21,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:21,113 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:05:21,114 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:05:21,115 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:05:21,115 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:05:21,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:05:21,116 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:05:21,116 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:05:21,116 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:05:21,116 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:05:21,117 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:05:21,117 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_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a7a61549e909154c33d5cf68876338c8745b83dde5aedff258c17f34600afc7 [2023-11-19 08:05:21,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:05:21,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:05:21,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:05:21,445 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:05:21,446 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:05:21,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c [2023-11-19 08:05:24,690 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:05:24,916 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:05:24,917 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c [2023-11-19 08:05:24,924 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/data/930ed149f/187134213135491592a740b541a08b33/FLAG5287db181 [2023-11-19 08:05:24,943 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/data/930ed149f/187134213135491592a740b541a08b33 [2023-11-19 08:05:24,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:05:24,954 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:05:24,957 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:24,958 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:05:24,963 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:05:24,967 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:24" (1/1) ... [2023-11-19 08:05:24,968 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17d8791a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:24, skipping insertion in model container [2023-11-19 08:05:24,968 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:24" (1/1) ... [2023-11-19 08:05:25,000 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:05:25,212 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_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c[618,631] [2023-11-19 08:05:25,229 WARN L1588 CHandler]: Possible shadowing of function min [2023-11-19 08:05:25,231 WARN L1588 CHandler]: Possible shadowing of function min [2023-11-19 08:05:25,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:25,262 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:05:25,275 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_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c[618,631] [2023-11-19 08:05:25,281 WARN L1588 CHandler]: Possible shadowing of function min [2023-11-19 08:05:25,283 WARN L1588 CHandler]: Possible shadowing of function min [2023-11-19 08:05:25,294 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:25,313 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:05:25,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25 WrapperNode [2023-11-19 08:05:25,314 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:25,315 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:25,316 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:05:25,316 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:05:25,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (1/1) ... [2023-11-19 08:05:25,335 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (1/1) ... [2023-11-19 08:05:25,363 INFO L138 Inliner]: procedures = 29, calls = 58, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2023-11-19 08:05:25,364 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:25,365 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:05:25,365 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:05:25,365 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:05:25,379 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (1/1) ... [2023-11-19 08:05:25,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (1/1) ... [2023-11-19 08:05:25,387 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (1/1) ... [2023-11-19 08:05:25,387 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (1/1) ... [2023-11-19 08:05:25,399 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (1/1) ... [2023-11-19 08:05:25,403 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (1/1) ... [2023-11-19 08:05:25,405 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (1/1) ... [2023-11-19 08:05:25,407 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (1/1) ... [2023-11-19 08:05:25,411 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:05:25,412 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:05:25,412 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:05:25,412 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:05:25,413 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (1/1) ... [2023-11-19 08:05:25,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:25,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:25,458 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:05:25,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:05:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:05:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:05:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 08:05:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2023-11-19 08:05:25,522 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2023-11-19 08:05:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:05:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure min [2023-11-19 08:05:25,523 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2023-11-19 08:05:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:05:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 08:05:25,523 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 08:05:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 08:05:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2023-11-19 08:05:25,524 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2023-11-19 08:05:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:05:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:05:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure size [2023-11-19 08:05:25,524 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2023-11-19 08:05:25,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:05:25,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:05:25,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 08:05:25,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 08:05:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2023-11-19 08:05:25,527 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2023-11-19 08:05:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:05:25,651 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:05:25,654 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:05:26,062 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:05:26,074 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:05:26,074 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:05:26,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:26 BoogieIcfgContainer [2023-11-19 08:05:26,080 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:05:26,084 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:05:26,086 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:05:26,091 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:05:26,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:05:24" (1/3) ... [2023-11-19 08:05:26,093 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2309a550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:26, skipping insertion in model container [2023-11-19 08:05:26,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:25" (2/3) ... [2023-11-19 08:05:26,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2309a550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:26, skipping insertion in model container [2023-11-19 08:05:26,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:26" (3/3) ... [2023-11-19 08:05:26,098 INFO L112 eAbstractionObserver]: Analyzing ICFG tree_del_rec_incorrect.c [2023-11-19 08:05:26,123 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:05:26,123 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:05:26,182 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:05:26,193 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;@5246b83a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:05:26,194 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:05:26,200 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 54 states have (on average 1.2037037037037037) internal successors, (65), 55 states have internal predecessors, (65), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-19 08:05:26,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 08:05:26,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:26,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:26,213 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:26,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:26,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1466411597, now seen corresponding path program 1 times [2023-11-19 08:05:26,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:26,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694563629] [2023-11-19 08:05:26,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:26,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:26,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:05:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:26,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:05:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:26,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:05:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:26,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 08:05:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:26,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-19 08:05:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:26,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:26,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:26,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694563629] [2023-11-19 08:05:26,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694563629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:26,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:26,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:05:26,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858700007] [2023-11-19 08:05:26,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:26,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:05:26,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:26,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:05:26,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:26,670 INFO L87 Difference]: Start difference. First operand has 85 states, 54 states have (on average 1.2037037037037037) internal successors, (65), 55 states have internal predecessors, (65), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:05:27,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:27,072 INFO L93 Difference]: Finished difference Result 149 states and 197 transitions. [2023-11-19 08:05:27,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:05:27,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2023-11-19 08:05:27,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:27,092 INFO L225 Difference]: With dead ends: 149 [2023-11-19 08:05:27,094 INFO L226 Difference]: Without dead ends: 85 [2023-11-19 08:05:27,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:27,109 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 60 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:27,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 121 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:05:27,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-19 08:05:27,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 80. [2023-11-19 08:05:27,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 50 states have (on average 1.14) internal successors, (57), 50 states have internal predecessors, (57), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-19 08:05:27,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2023-11-19 08:05:27,212 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 37 [2023-11-19 08:05:27,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:27,214 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2023-11-19 08:05:27,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:05:27,217 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2023-11-19 08:05:27,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 08:05:27,225 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:27,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:27,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:05:27,226 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:27,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:27,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1240207797, now seen corresponding path program 1 times [2023-11-19 08:05:27,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:27,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906342943] [2023-11-19 08:05:27,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:27,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:27,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:05:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:27,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:05:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:27,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:05:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:27,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 08:05:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:27,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-19 08:05:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:27,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:27,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906342943] [2023-11-19 08:05:27,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906342943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:27,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:27,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 08:05:27,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607166302] [2023-11-19 08:05:27,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:27,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:05:27,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:27,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:05:27,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:05:27,676 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:05:28,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:28,152 INFO L93 Difference]: Finished difference Result 143 states and 185 transitions. [2023-11-19 08:05:28,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:05:28,153 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2023-11-19 08:05:28,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:28,156 INFO L225 Difference]: With dead ends: 143 [2023-11-19 08:05:28,156 INFO L226 Difference]: Without dead ends: 87 [2023-11-19 08:05:28,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:05:28,159 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 33 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:28,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 239 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:05:28,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-19 08:05:28,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 82. [2023-11-19 08:05:28,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 51 states have (on average 1.1372549019607843) internal successors, (58), 52 states have internal predecessors, (58), 22 states have call successors, (22), 7 states have call predecessors, (22), 8 states have return successors, (25), 22 states have call predecessors, (25), 22 states have call successors, (25) [2023-11-19 08:05:28,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2023-11-19 08:05:28,196 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 37 [2023-11-19 08:05:28,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:28,197 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2023-11-19 08:05:28,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:05:28,197 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2023-11-19 08:05:28,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-19 08:05:28,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:28,205 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:28,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:05:28,205 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:28,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:28,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1995642374, now seen corresponding path program 1 times [2023-11-19 08:05:28,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:28,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986984455] [2023-11-19 08:05:28,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:28,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:28,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:05:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:28,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:05:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:28,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:05:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:28,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:05:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:28,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:05:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:28,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 08:05:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:28,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-19 08:05:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:28,909 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 08:05:28,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:28,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986984455] [2023-11-19 08:05:28,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986984455] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:05:28,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75866919] [2023-11-19 08:05:28,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:28,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:28,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:28,914 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:28,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:05:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:29,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 08:05:29,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:29,237 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 08:05:29,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:05:29,522 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 08:05:29,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75866919] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:05:29,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:05:29,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 13 [2023-11-19 08:05:29,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385235557] [2023-11-19 08:05:29,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:05:29,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 08:05:29,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:29,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 08:05:29,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:05:29,533 INFO L87 Difference]: Start difference. First operand 82 states and 105 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 9 states have internal predecessors, (44), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-19 08:05:30,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:30,238 INFO L93 Difference]: Finished difference Result 149 states and 194 transitions. [2023-11-19 08:05:30,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:05:30,239 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 9 states have internal predecessors, (44), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 49 [2023-11-19 08:05:30,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:30,242 INFO L225 Difference]: With dead ends: 149 [2023-11-19 08:05:30,242 INFO L226 Difference]: Without dead ends: 87 [2023-11-19 08:05:30,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-11-19 08:05:30,246 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 45 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:30,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 401 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 08:05:30,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-19 08:05:30,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2023-11-19 08:05:30,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 52 states have (on average 1.1346153846153846) internal successors, (59), 54 states have internal predecessors, (59), 22 states have call successors, (22), 7 states have call predecessors, (22), 9 states have return successors, (27), 22 states have call predecessors, (27), 22 states have call successors, (27) [2023-11-19 08:05:30,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 108 transitions. [2023-11-19 08:05:30,277 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 108 transitions. Word has length 49 [2023-11-19 08:05:30,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:30,279 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 108 transitions. [2023-11-19 08:05:30,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 9 states have internal predecessors, (44), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-19 08:05:30,280 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 108 transitions. [2023-11-19 08:05:30,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-19 08:05:30,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:30,292 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:30,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 08:05:30,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:30,517 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:30,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:30,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1925714431, now seen corresponding path program 1 times [2023-11-19 08:05:30,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:30,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423514070] [2023-11-19 08:05:30,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:30,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:30,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:05:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:30,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:05:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:30,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:05:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:30,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-19 08:05:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:30,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-19 08:05:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:30,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:05:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:30,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:05:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:30,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-19 08:05:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:31,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:05:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:31,008 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 08:05:31,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:31,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423514070] [2023-11-19 08:05:31,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423514070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:31,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:31,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 08:05:31,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750887915] [2023-11-19 08:05:31,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:31,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 08:05:31,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:31,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 08:05:31,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:05:31,012 INFO L87 Difference]: Start difference. First operand 84 states and 108 transitions. Second operand has 11 states, 10 states have (on average 3.3) internal successors, (33), 7 states have internal predecessors, (33), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-19 08:05:31,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:31,460 INFO L93 Difference]: Finished difference Result 149 states and 194 transitions. [2023-11-19 08:05:31,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:05:31,461 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 7 states have internal predecessors, (33), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 61 [2023-11-19 08:05:31,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:31,463 INFO L225 Difference]: With dead ends: 149 [2023-11-19 08:05:31,464 INFO L226 Difference]: Without dead ends: 89 [2023-11-19 08:05:31,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-19 08:05:31,466 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 103 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:31,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 360 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:05:31,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-19 08:05:31,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2023-11-19 08:05:31,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 56 states have internal predecessors, (60), 22 states have call successors, (22), 7 states have call predecessors, (22), 10 states have return successors, (29), 22 states have call predecessors, (29), 22 states have call successors, (29) [2023-11-19 08:05:31,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 111 transitions. [2023-11-19 08:05:31,484 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 111 transitions. Word has length 61 [2023-11-19 08:05:31,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:31,485 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 111 transitions. [2023-11-19 08:05:31,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 7 states have internal predecessors, (33), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-19 08:05:31,485 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 111 transitions. [2023-11-19 08:05:31,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-19 08:05:31,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:31,487 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:31,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:05:31,488 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:31,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:31,489 INFO L85 PathProgramCache]: Analyzing trace with hash 759490109, now seen corresponding path program 1 times [2023-11-19 08:05:31,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:31,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574375293] [2023-11-19 08:05:31,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:31,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:31,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:05:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:31,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:05:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:31,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:05:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:31,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-19 08:05:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:32,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:05:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:32,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:05:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:32,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-19 08:05:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:32,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:05:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:32,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:05:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:32,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-19 08:05:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:32,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-19 08:05:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:32,285 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 08:05:32,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:32,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574375293] [2023-11-19 08:05:32,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574375293] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:05:32,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316615807] [2023-11-19 08:05:32,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:32,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:32,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:32,289 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:32,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:05:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:32,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 08:05:32,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 08:05:32,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:05:32,845 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 08:05:32,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316615807] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:05:32,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:05:32,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 17 [2023-11-19 08:05:32,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650784304] [2023-11-19 08:05:32,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:05:32,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 08:05:32,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:32,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 08:05:32,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-11-19 08:05:32,850 INFO L87 Difference]: Start difference. First operand 86 states and 111 transitions. Second operand has 17 states, 16 states have (on average 3.0) internal successors, (48), 13 states have internal predecessors, (48), 7 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-19 08:05:33,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:33,625 INFO L93 Difference]: Finished difference Result 141 states and 182 transitions. [2023-11-19 08:05:33,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 08:05:33,626 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.0) internal successors, (48), 13 states have internal predecessors, (48), 7 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 74 [2023-11-19 08:05:33,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:33,628 INFO L225 Difference]: With dead ends: 141 [2023-11-19 08:05:33,629 INFO L226 Difference]: Without dead ends: 89 [2023-11-19 08:05:33,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2023-11-19 08:05:33,631 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 127 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:33,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 472 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 08:05:33,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-19 08:05:33,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2023-11-19 08:05:33,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 58 states have internal predecessors, (61), 22 states have call successors, (22), 7 states have call predecessors, (22), 11 states have return successors, (31), 22 states have call predecessors, (31), 22 states have call successors, (31) [2023-11-19 08:05:33,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 114 transitions. [2023-11-19 08:05:33,651 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 114 transitions. Word has length 74 [2023-11-19 08:05:33,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:33,652 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 114 transitions. [2023-11-19 08:05:33,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.0) internal successors, (48), 13 states have internal predecessors, (48), 7 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-19 08:05:33,653 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 114 transitions. [2023-11-19 08:05:33,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-19 08:05:33,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:33,655 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:33,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:05:33,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:33,870 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:33,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:33,871 INFO L85 PathProgramCache]: Analyzing trace with hash 353794128, now seen corresponding path program 1 times [2023-11-19 08:05:33,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:33,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143872078] [2023-11-19 08:05:33,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:33,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:05:33,929 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:05:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:05:34,005 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:05:34,006 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:05:34,007 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 08:05:34,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:05:34,015 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-19 08:05:34,020 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:05:34,075 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret8 [2023-11-19 08:05:34,077 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret9 [2023-11-19 08:05:34,077 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret42 [2023-11-19 08:05:34,078 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem10 [2023-11-19 08:05:34,078 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem10 [2023-11-19 08:05:34,081 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret11 could not be translated [2023-11-19 08:05:34,081 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem12 [2023-11-19 08:05:34,082 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret13 could not be translated [2023-11-19 08:05:34,082 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem12 [2023-11-19 08:05:34,083 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-11-19 08:05:34,083 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem25 [2023-11-19 08:05:34,084 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem25 [2023-11-19 08:05:34,084 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret26 could not be translated [2023-11-19 08:05:34,084 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem27 [2023-11-19 08:05:34,084 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem25 [2023-11-19 08:05:34,085 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret26 could not be translated [2023-11-19 08:05:34,085 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret28 could not be translated [2023-11-19 08:05:34,085 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem27 [2023-11-19 08:05:34,086 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem25 [2023-11-19 08:05:34,086 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret26 could not be translated [2023-11-19 08:05:34,086 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret30 could not be translated [2023-11-19 08:05:34,087 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc31 [2023-11-19 08:05:34,087 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc31 [2023-11-19 08:05:34,088 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem19 [2023-11-19 08:05:34,089 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem19 [2023-11-19 08:05:34,089 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret20 could not be translated [2023-11-19 08:05:34,089 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem23 [2023-11-19 08:05:34,090 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem23 [2023-11-19 08:05:34,090 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret24 could not be translated [2023-11-19 08:05:34,091 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc31 [2023-11-19 08:05:34,091 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret32 could not be translated [2023-11-19 08:05:34,092 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc31 [2023-11-19 08:05:34,092 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem33 could not be translated [2023-11-19 08:05:34,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:05:34 BoogieIcfgContainer [2023-11-19 08:05:34,113 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:05:34,113 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:05:34,113 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:05:34,114 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:05:34,114 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:26" (3/4) ... [2023-11-19 08:05:34,115 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 08:05:34,137 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret8 [2023-11-19 08:05:34,139 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret9 [2023-11-19 08:05:34,139 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret42 [2023-11-19 08:05:34,140 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem10 [2023-11-19 08:05:34,141 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem10 [2023-11-19 08:05:34,141 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret11 could not be translated [2023-11-19 08:05:34,141 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem12 [2023-11-19 08:05:34,142 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret13 could not be translated [2023-11-19 08:05:34,142 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem12 [2023-11-19 08:05:34,142 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-11-19 08:05:34,143 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem25 [2023-11-19 08:05:34,143 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem25 [2023-11-19 08:05:34,143 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret26 could not be translated [2023-11-19 08:05:34,144 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem25 [2023-11-19 08:05:34,144 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem27 [2023-11-19 08:05:34,144 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret26 could not be translated [2023-11-19 08:05:34,144 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem25 [2023-11-19 08:05:34,144 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret28 could not be translated [2023-11-19 08:05:34,145 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem27 [2023-11-19 08:05:34,145 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret26 could not be translated [2023-11-19 08:05:34,145 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret30 could not be translated [2023-11-19 08:05:34,145 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc31 [2023-11-19 08:05:34,146 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc31 [2023-11-19 08:05:34,146 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem19 [2023-11-19 08:05:34,147 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret20 could not be translated [2023-11-19 08:05:34,147 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem19 [2023-11-19 08:05:34,148 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem23 [2023-11-19 08:05:34,148 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem23 [2023-11-19 08:05:34,148 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret24 could not be translated [2023-11-19 08:05:34,149 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret32 could not be translated [2023-11-19 08:05:34,149 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc31 [2023-11-19 08:05:34,149 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem33 could not be translated [2023-11-19 08:05:34,150 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc31 [2023-11-19 08:05:34,215 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 08:05:34,215 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:05:34,216 INFO L158 Benchmark]: Toolchain (without parser) took 9261.74ms. Allocated memory was 121.6MB in the beginning and 207.6MB in the end (delta: 86.0MB). Free memory was 76.7MB in the beginning and 120.1MB in the end (delta: -43.4MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. [2023-11-19 08:05:34,216 INFO L158 Benchmark]: CDTParser took 0.54ms. Allocated memory is still 100.7MB. Free memory is still 52.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:05:34,217 INFO L158 Benchmark]: CACSL2BoogieTranslator took 357.18ms. Allocated memory is still 121.6MB. Free memory was 76.4MB in the beginning and 64.2MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 08:05:34,217 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.46ms. Allocated memory is still 121.6MB. Free memory was 64.2MB in the beginning and 62.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:05:34,218 INFO L158 Benchmark]: Boogie Preprocessor took 46.69ms. Allocated memory is still 121.6MB. Free memory was 62.4MB in the beginning and 60.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:05:34,218 INFO L158 Benchmark]: RCFGBuilder took 668.33ms. Allocated memory was 121.6MB in the beginning and 172.0MB in the end (delta: 50.3MB). Free memory was 60.3MB in the beginning and 128.5MB in the end (delta: -68.2MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2023-11-19 08:05:34,218 INFO L158 Benchmark]: TraceAbstraction took 8029.13ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 127.7MB in the beginning and 126.4MB in the end (delta: 1.4MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2023-11-19 08:05:34,219 INFO L158 Benchmark]: Witness Printer took 102.09ms. Allocated memory is still 207.6MB. Free memory was 126.4MB in the beginning and 120.1MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 08:05:34,223 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54ms. Allocated memory is still 100.7MB. Free memory is still 52.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 357.18ms. Allocated memory is still 121.6MB. Free memory was 76.4MB in the beginning and 64.2MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.46ms. Allocated memory is still 121.6MB. Free memory was 64.2MB in the beginning and 62.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.69ms. Allocated memory is still 121.6MB. Free memory was 62.4MB in the beginning and 60.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 668.33ms. Allocated memory was 121.6MB in the beginning and 172.0MB in the end (delta: 50.3MB). Free memory was 60.3MB in the beginning and 128.5MB in the end (delta: -68.2MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. * TraceAbstraction took 8029.13ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 127.7MB in the beginning and 126.4MB in the end (delta: 1.4MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. * Witness Printer took 102.09ms. Allocated memory is still 207.6MB. Free memory was 126.4MB in the beginning and 120.1MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret8 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret9 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret42 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem10 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem10 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem12 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret13 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem12 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem25 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem25 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret26 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem27 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem25 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret26 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret28 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem27 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem25 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret26 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret30 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc31 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc31 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem19 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem19 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret20 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem23 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem23 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret24 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc31 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret32 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc31 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem33 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret8 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret9 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret42 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem10 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem10 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem12 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret13 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem12 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem25 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem25 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret26 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem25 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem27 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret26 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem25 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret28 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem27 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret26 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret30 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc31 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc31 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem19 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret20 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem19 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem23 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem23 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret24 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret32 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc31 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem33 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc31 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L98] CALL, EXPR nondet_tree() [L25] COND FALSE !(__VERIFIER_nondet_bool()) [L28] struct node *n = (struct node *)malloc(sizeof(struct node)); [L29] n->data = __VERIFIER_nondet_int() [L30] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; VAL [\result={0:0}] [L30] RET, EXPR nondet_tree() VAL [n={-1:0}] [L30] n->left = nondet_tree() [L31] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; VAL [\result={0:0}] [L31] RET, EXPR nondet_tree() VAL [n={-1:0}] [L31] n->right = nondet_tree() [L32] return n; VAL [\result={-1:0}, n={-1:0}] [L98] RET, EXPR nondet_tree() [L98] CALL task(nondet_tree()) [L76] CALL, EXPR min(t) VAL [n={-1:0}] [L37] COND FALSE !(!n) [L40] EXPR n->left VAL [n={-1:0}, n={-1:0}] [L40] CALL, EXPR min(n->left) VAL [n={0:0}] [L37] COND TRUE !n [L38] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L40] RET, EXPR min(n->left) VAL [n={-1:0}, n={-1:0}] [L40] int a = min(n->left); [L41] EXPR n->right VAL [a=2147483647, n={-1:0}, n={-1:0}] [L41] CALL, EXPR min(n->right) VAL [n={0:0}] [L37] COND TRUE !n [L38] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L41] RET, EXPR min(n->right) VAL [a=2147483647, n={-1:0}, n={-1:0}] [L41] int b = min(n->right); [L42] COND TRUE a <= b [L42] return a; VAL [\result=2147483647, a=2147483647, b=2147483647, n={-1:0}, n={-1:0}] [L76] RET, EXPR min(t) VAL [t={-1:0}, t={-1:0}] [L76] int a = min(t); [L77] int b; VAL [a=2147483647, b={5:0}, t={-1:0}, t={-1:0}] [L79] CALL, EXPR size(t) VAL [t={-1:0}] [L71] COND FALSE !(!t) [L72] EXPR t->left VAL [t={-1:0}, t={-1:0}] [L72] CALL, EXPR size(t->left) VAL [t={0:0}] [L71] COND TRUE !t [L71] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L72] RET, EXPR size(t->left) VAL [t={-1:0}, t={-1:0}] [L72] EXPR t->right VAL [t={-1:0}, t={-1:0}] [L72] CALL, EXPR size(t->right) VAL [t={0:0}] [L71] COND TRUE !t [L71] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L72] RET, EXPR size(t->right) VAL [t={-1:0}, t={-1:0}] [L72] return size(t->left) + size(t->right) + 1; [L79] RET, EXPR size(t) VAL [a=2147483647, b={5:0}, t={-1:0}, t={-1:0}] [L79] int n = size(t); [L80] CALL assume_abort_if_not(n != 0) [L10] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L80] RET assume_abort_if_not(n != 0) [L81] EXPR, FCALL calloc(n, sizeof(int)) VAL [a=2147483647, b={5:0}, n=1, t={-1:0}, t={-1:0}] [L81] int *x = calloc(n, sizeof(int)); VAL [a=2147483647, b={5:0}, n=1, t={-1:0}, t={-1:0}, x={-3:0}] [L82] CALL tree_inorder(t, x, n) VAL [\old(i)=1, a={-3:0}, t={-1:0}] [L60] COND FALSE !(!t) [L63] EXPR t->left VAL [\old(i)=1, a={-3:0}, a={-3:0}, i=1, t={-1:0}, t={-1:0}] [L63] CALL, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={-3:0}, t={0:0}] [L60] COND TRUE !t [L61] return i; VAL [\old(i)=1, \result=1, a={-3:0}, a={-3:0}, i=1, t={0:0}, t={0:0}] [L63] RET, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={-3:0}, a={-3:0}, i=1, t={-1:0}, t={-1:0}] [L63] i = tree_inorder(t->left, a, i) [L64] EXPR i++ [L64] EXPR t->data [L64] a[i++] = t->data [L65] EXPR t->right VAL [\old(i)=1, a={-3:0}, a={-3:0}, i=2, t={-1:0}, t={-1:0}] [L65] CALL, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=2, a={-3:0}, t={0:0}] [L60] COND TRUE !t [L61] return i; VAL [\old(i)=2, \result=2, a={-3:0}, a={-3:0}, i=2, t={0:0}, t={0:0}] [L65] RET, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=1, a={-3:0}, a={-3:0}, i=2, t={-1:0}, t={-1:0}] [L65] i = tree_inorder(t->right, a, i) [L66] return i; VAL [\old(i)=1, \result=2, a={-3:0}, a={-3:0}, i=2, t={-1:0}, t={-1:0}] [L82] RET tree_inorder(t, x, n) VAL [a=2147483647, b={5:0}, n=1, t={-1:0}, t={-1:0}, x={-3:0}] [L83] EXPR x[0] VAL [a=2147483647, b={5:0}, n=1, t={-1:0}, t={-1:0}, x={-3:0}] [L83] CALL __VERIFIER_assert(a == x[0]) VAL [\old(cond)=0] [L16] COND TRUE !cond VAL [\old(cond)=0, cond=0] [L16] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.9s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 386 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 368 mSDsluCounter, 1593 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1292 mSDsCounter, 255 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1775 IncrementalHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 255 mSolverCounterUnsat, 301 mSDtfsCounter, 1775 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 368 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=5, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 467 NumberOfCodeBlocks, 467 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 495 ConstructedInterpolants, 0 QuantifiedInterpolants, 1378 SizeOfPredicates, 14 NumberOfNonLiveVariables, 631 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 156/168 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-19 08:05:34,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78a29dd-aff9-4fae-ab3c-4bb88b9db4be/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE