./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.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_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/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_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/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_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/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 60035180ad93ee19bf4d992ab5c22fc9a9b898dcfe886a7e5b520105473a6903 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:49:05,968 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:49:06,081 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:49:06,087 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:49:06,088 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:49:06,131 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:49:06,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:49:06,132 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:49:06,133 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:49:06,138 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:49:06,139 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:49:06,140 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:49:06,141 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:49:06,142 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:49:06,143 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:49:06,143 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:49:06,144 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:49:06,144 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:49:06,145 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:49:06,145 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:49:06,146 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:49:06,146 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:49:06,147 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:49:06,147 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:49:06,147 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:49:06,148 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:49:06,149 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:49:06,149 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:49:06,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:06,150 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:49:06,152 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:49:06,152 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:49:06,152 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:49:06,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:49:06,153 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:49:06,153 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:49:06,153 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:49:06,153 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:49:06,154 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:49:06,154 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_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60035180ad93ee19bf4d992ab5c22fc9a9b898dcfe886a7e5b520105473a6903 [2023-11-19 07:49:06,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:49:06,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:49:06,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:49:06,521 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:49:06,522 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:49:06,524 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2023-11-19 07:49:09,741 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:49:10,013 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:49:10,014 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2023-11-19 07:49:10,027 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/data/394ea3ffd/ab5e130f55614dcf80563e65971ad900/FLAG31efcda7e [2023-11-19 07:49:10,046 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/data/394ea3ffd/ab5e130f55614dcf80563e65971ad900 [2023-11-19 07:49:10,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:49:10,057 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:49:10,061 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:10,062 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:49:10,068 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:49:10,069 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:10" (1/1) ... [2023-11-19 07:49:10,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a995908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:10, skipping insertion in model container [2023-11-19 07:49:10,071 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:10" (1/1) ... [2023-11-19 07:49:10,116 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:49:10,332 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_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1215,1228] [2023-11-19 07:49:10,344 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_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1969,1982] [2023-11-19 07:49:10,350 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_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[2490,2503] [2023-11-19 07:49:10,356 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_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[3282,3295] [2023-11-19 07:49:10,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:10,371 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:49:10,392 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_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1215,1228] [2023-11-19 07:49:10,398 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_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1969,1982] [2023-11-19 07:49:10,402 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_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[2490,2503] [2023-11-19 07:49:10,407 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_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[3282,3295] [2023-11-19 07:49:10,411 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:10,428 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:49:10,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:10 WrapperNode [2023-11-19 07:49:10,429 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:10,431 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:10,431 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:49:10,431 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:49:10,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:10" (1/1) ... [2023-11-19 07:49:10,451 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:10" (1/1) ... [2023-11-19 07:49:10,493 INFO L138 Inliner]: procedures = 15, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 169 [2023-11-19 07:49:10,496 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:10,498 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:49:10,498 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:49:10,498 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:49:10,506 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:10" (1/1) ... [2023-11-19 07:49:10,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:10" (1/1) ... [2023-11-19 07:49:10,510 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:10" (1/1) ... [2023-11-19 07:49:10,510 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:10" (1/1) ... [2023-11-19 07:49:10,518 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:10" (1/1) ... [2023-11-19 07:49:10,523 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:10" (1/1) ... [2023-11-19 07:49:10,525 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:10" (1/1) ... [2023-11-19 07:49:10,527 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:10" (1/1) ... [2023-11-19 07:49:10,530 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:49:10,531 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:49:10,531 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:49:10,531 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:49:10,532 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:10" (1/1) ... [2023-11-19 07:49:10,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:10,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:10,574 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:49:10,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:49:10,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:49:10,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:49:10,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:49:10,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:49:10,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:49:10,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:49:10,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:49:10,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:49:10,749 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:49:10,751 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:49:11,085 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:49:11,093 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:49:11,093 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:49:11,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:11 BoogieIcfgContainer [2023-11-19 07:49:11,097 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:49:11,100 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:49:11,100 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:49:11,112 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:49:11,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:49:10" (1/3) ... [2023-11-19 07:49:11,114 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f723e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:11, skipping insertion in model container [2023-11-19 07:49:11,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:10" (2/3) ... [2023-11-19 07:49:11,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f723e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:11, skipping insertion in model container [2023-11-19 07:49:11,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:11" (3/3) ... [2023-11-19 07:49:11,119 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+lhb-reducer.c [2023-11-19 07:49:11,142 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:49:11,142 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-19 07:49:11,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:49:11,222 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;@3725ecb2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:49:11,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 07:49:11,230 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:11,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 07:49:11,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:11,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:11,240 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:49:11,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:11,250 INFO L85 PathProgramCache]: Analyzing trace with hash 687414397, now seen corresponding path program 1 times [2023-11-19 07:49:11,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:11,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139621852] [2023-11-19 07:49:11,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:11,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:11,607 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 07:49:11,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:11,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139621852] [2023-11-19 07:49:11,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139621852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:11,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:11,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:11,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184720484] [2023-11-19 07:49:11,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:11,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:11,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:11,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:11,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:11,670 INFO L87 Difference]: Start difference. First operand has 40 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:11,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:11,712 INFO L93 Difference]: Finished difference Result 78 states and 114 transitions. [2023-11-19 07:49:11,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:11,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 07:49:11,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:11,724 INFO L225 Difference]: With dead ends: 78 [2023-11-19 07:49:11,725 INFO L226 Difference]: Without dead ends: 38 [2023-11-19 07:49:11,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:11,733 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 1 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:11,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 98 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:11,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-19 07:49:11,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2023-11-19 07:49:11,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 36 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:11,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2023-11-19 07:49:11,777 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 11 [2023-11-19 07:49:11,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:11,777 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2023-11-19 07:49:11,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:11,778 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2023-11-19 07:49:11,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 07:49:11,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:11,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:11,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:49:11,780 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:49:11,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:11,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1851126331, now seen corresponding path program 1 times [2023-11-19 07:49:11,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:11,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902363211] [2023-11-19 07:49:11,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:11,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:11,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:11,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902363211] [2023-11-19 07:49:11,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902363211] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:11,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230788663] [2023-11-19 07:49:11,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:11,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:11,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:11,981 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:12,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:49:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:12,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:49:12,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:12,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:12,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:12,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230788663] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:49:12,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:49:12,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-19 07:49:12,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065259940] [2023-11-19 07:49:12,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:49:12,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:49:12,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:12,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:49:12,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:49:12,222 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:12,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:12,305 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2023-11-19 07:49:12,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:49:12,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-19 07:49:12,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:12,307 INFO L225 Difference]: With dead ends: 75 [2023-11-19 07:49:12,307 INFO L226 Difference]: Without dead ends: 43 [2023-11-19 07:49:12,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:49:12,309 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 3 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:12,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 155 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:12,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-19 07:49:12,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-11-19 07:49:12,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 42 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:12,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2023-11-19 07:49:12,317 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 13 [2023-11-19 07:49:12,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:12,318 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2023-11-19 07:49:12,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:12,318 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2023-11-19 07:49:12,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 07:49:12,319 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:12,319 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:12,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:12,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:12,541 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:49:12,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:12,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1841112693, now seen corresponding path program 2 times [2023-11-19 07:49:12,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:12,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419614511] [2023-11-19 07:49:12,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:12,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:12,814 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:12,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:12,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419614511] [2023-11-19 07:49:12,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419614511] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:12,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244544927] [2023-11-19 07:49:12,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:49:12,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:12,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:12,816 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:12,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:49:12,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:49:12,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:49:12,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:49:12,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:12,975 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:49:12,976 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:12,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244544927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:12,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:49:12,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-19 07:49:12,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007910836] [2023-11-19 07:49:12,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:12,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:12,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:12,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:12,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:49:12,982 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:13,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:13,000 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2023-11-19 07:49:13,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:13,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-19 07:49:13,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:13,002 INFO L225 Difference]: With dead ends: 50 [2023-11-19 07:49:13,003 INFO L226 Difference]: Without dead ends: 40 [2023-11-19 07:49:13,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:49:13,005 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 11 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:13,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 56 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:13,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-19 07:49:13,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2023-11-19 07:49:13,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 37 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:13,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2023-11-19 07:49:13,014 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 19 [2023-11-19 07:49:13,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:13,015 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2023-11-19 07:49:13,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:13,015 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2023-11-19 07:49:13,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 07:49:13,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:13,017 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:13,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:13,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:13,233 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:49:13,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:13,234 INFO L85 PathProgramCache]: Analyzing trace with hash -998148927, now seen corresponding path program 1 times [2023-11-19 07:49:13,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:13,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443245065] [2023-11-19 07:49:13,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:13,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:13,296 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:49:13,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:13,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443245065] [2023-11-19 07:49:13,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443245065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:13,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:13,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:13,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917447693] [2023-11-19 07:49:13,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:13,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:13,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:13,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:13,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:13,300 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:13,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:13,335 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2023-11-19 07:49:13,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:13,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-19 07:49:13,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:13,337 INFO L225 Difference]: With dead ends: 66 [2023-11-19 07:49:13,337 INFO L226 Difference]: Without dead ends: 45 [2023-11-19 07:49:13,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:13,339 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 16 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:13,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 46 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:13,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-19 07:49:13,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2023-11-19 07:49:13,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 37 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:13,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2023-11-19 07:49:13,348 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 20 [2023-11-19 07:49:13,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:13,349 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2023-11-19 07:49:13,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:13,350 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2023-11-19 07:49:13,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 07:49:13,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:13,351 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:13,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:49:13,351 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:49:13,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:13,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1067591748, now seen corresponding path program 1 times [2023-11-19 07:49:13,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:13,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194984276] [2023-11-19 07:49:13,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:13,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:13,447 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:49:13,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:13,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194984276] [2023-11-19 07:49:13,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194984276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:13,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:13,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:49:13,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318786616] [2023-11-19 07:49:13,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:13,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:49:13,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:13,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:49:13,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:49:13,451 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:13,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:13,478 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2023-11-19 07:49:13,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:49:13,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-19 07:49:13,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:13,480 INFO L225 Difference]: With dead ends: 59 [2023-11-19 07:49:13,480 INFO L226 Difference]: Without dead ends: 57 [2023-11-19 07:49:13,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:13,482 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 23 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:13,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 95 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:13,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-19 07:49:13,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 40. [2023-11-19 07:49:13,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 39 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:13,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2023-11-19 07:49:13,490 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 20 [2023-11-19 07:49:13,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:13,490 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2023-11-19 07:49:13,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:13,491 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2023-11-19 07:49:13,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 07:49:13,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:13,492 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:13,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:49:13,492 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:49:13,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:13,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1327309895, now seen corresponding path program 1 times [2023-11-19 07:49:13,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:13,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14495396] [2023-11-19 07:49:13,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:13,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:13,540 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:49:13,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:13,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14495396] [2023-11-19 07:49:13,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14495396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:13,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:13,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:13,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596523641] [2023-11-19 07:49:13,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:13,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:13,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:13,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:13,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:13,544 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:13,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:13,574 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2023-11-19 07:49:13,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:13,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-19 07:49:13,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:13,576 INFO L225 Difference]: With dead ends: 62 [2023-11-19 07:49:13,576 INFO L226 Difference]: Without dead ends: 41 [2023-11-19 07:49:13,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:13,578 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 8 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:13,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 44 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:13,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-19 07:49:13,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2023-11-19 07:49:13,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:13,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2023-11-19 07:49:13,585 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 21 [2023-11-19 07:49:13,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:13,586 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2023-11-19 07:49:13,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:13,586 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2023-11-19 07:49:13,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 07:49:13,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:13,587 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:13,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:49:13,588 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:49:13,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:13,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1951228316, now seen corresponding path program 1 times [2023-11-19 07:49:13,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:13,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43969457] [2023-11-19 07:49:13,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:13,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:13,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:13,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43969457] [2023-11-19 07:49:13,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43969457] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:13,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024800205] [2023-11-19 07:49:13,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:13,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:13,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:13,794 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:13,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:49:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:13,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:49:13,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:13,980 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:13,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:14,089 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:14,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024800205] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:49:14,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:49:14,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-19 07:49:14,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684030218] [2023-11-19 07:49:14,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:49:14,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:49:14,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:14,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:49:14,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:49:14,093 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:14,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:14,379 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2023-11-19 07:49:14,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:49:14,381 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-19 07:49:14,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:14,382 INFO L225 Difference]: With dead ends: 71 [2023-11-19 07:49:14,382 INFO L226 Difference]: Without dead ends: 47 [2023-11-19 07:49:14,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:49:14,385 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 6 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:14,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 219 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:49:14,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-19 07:49:14,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-11-19 07:49:14,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:14,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2023-11-19 07:49:14,406 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 26 [2023-11-19 07:49:14,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:14,406 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2023-11-19 07:49:14,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:14,408 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2023-11-19 07:49:14,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-19 07:49:14,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:14,412 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:14,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:14,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 07:49:14,614 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:49:14,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:14,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1760114984, now seen corresponding path program 2 times [2023-11-19 07:49:14,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:14,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557353906] [2023-11-19 07:49:14,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:14,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:15,117 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:15,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:15,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557353906] [2023-11-19 07:49:15,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557353906] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:15,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338142317] [2023-11-19 07:49:15,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:49:15,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:15,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:15,120 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:15,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:49:15,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:49:15,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:49:15,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 07:49:15,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:16,528 INFO L349 Elim1Store]: treesize reduction 108, result has 6.1 percent of original size [2023-11-19 07:49:16,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 332 treesize of output 149 [2023-11-19 07:49:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-19 07:49:16,800 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:16,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338142317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:16,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:49:16,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2023-11-19 07:49:16,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760487954] [2023-11-19 07:49:16,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:16,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:49:16,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:16,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:49:16,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:49:16,807 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:17,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:17,131 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2023-11-19 07:49:17,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:49:17,132 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-11-19 07:49:17,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:17,133 INFO L225 Difference]: With dead ends: 63 [2023-11-19 07:49:17,134 INFO L226 Difference]: Without dead ends: 42 [2023-11-19 07:49:17,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2023-11-19 07:49:17,135 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 27 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:17,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 49 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:49:17,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-19 07:49:17,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2023-11-19 07:49:17,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:17,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2023-11-19 07:49:17,144 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 38 [2023-11-19 07:49:17,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:17,144 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2023-11-19 07:49:17,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:17,144 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2023-11-19 07:49:17,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 07:49:17,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:17,146 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:17,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:17,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:49:17,353 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:49:17,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:17,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1951461462, now seen corresponding path program 1 times [2023-11-19 07:49:17,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:17,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471708158] [2023-11-19 07:49:17,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:17,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:17,543 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-19 07:49:17,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:17,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471708158] [2023-11-19 07:49:17,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471708158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:17,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:17,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:49:17,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774586728] [2023-11-19 07:49:17,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:17,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:49:17,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:17,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:49:17,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:49:17,546 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:17,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:17,595 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2023-11-19 07:49:17,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:49:17,596 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-11-19 07:49:17,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:17,596 INFO L225 Difference]: With dead ends: 46 [2023-11-19 07:49:17,596 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 07:49:17,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:49:17,598 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 21 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:17,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 76 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:17,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 07:49:17,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 07:49:17,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:17,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 07:49:17,600 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2023-11-19 07:49:17,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:17,600 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:49:17,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:17,600 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 07:49:17,600 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 07:49:17,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-19 07:49:17,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-19 07:49:17,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-11-19 07:49:17,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-19 07:49:17,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:49:17,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 07:49:17,617 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 77) no Hoare annotation was computed. [2023-11-19 07:49:17,617 INFO L899 garLoopResultBuilder]: For program point L118(lines 30 189) no Hoare annotation was computed. [2023-11-19 07:49:17,617 INFO L899 garLoopResultBuilder]: For program point L52(lines 50 143) no Hoare annotation was computed. [2023-11-19 07:49:17,618 INFO L899 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2023-11-19 07:49:17,618 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 143) no Hoare annotation was computed. [2023-11-19 07:49:17,618 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 14 200) no Hoare annotation was computed. [2023-11-19 07:49:17,618 INFO L899 garLoopResultBuilder]: For program point $Ultimate##32(lines 104 131) no Hoare annotation was computed. [2023-11-19 07:49:17,618 INFO L899 garLoopResultBuilder]: For program point L69(lines 66 92) no Hoare annotation was computed. [2023-11-19 07:49:17,618 INFO L899 garLoopResultBuilder]: For program point L160(lines 160 188) no Hoare annotation was computed. [2023-11-19 07:49:17,618 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 137) no Hoare annotation was computed. [2023-11-19 07:49:17,619 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-19 07:49:17,619 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 194) no Hoare annotation was computed. [2023-11-19 07:49:17,619 INFO L899 garLoopResultBuilder]: For program point L20-2(lines 20 23) no Hoare annotation was computed. [2023-11-19 07:49:17,619 INFO L895 garLoopResultBuilder]: At program point L20-3(lines 20 23) the Hoare annotation is: (= |ULTIMATE.start_main_~main__loop_entered~0#1| 0) [2023-11-19 07:49:17,619 INFO L899 garLoopResultBuilder]: For program point L20-4(lines 20 23) no Hoare annotation was computed. [2023-11-19 07:49:17,619 INFO L899 garLoopResultBuilder]: For program point L111(lines 111 124) no Hoare annotation was computed. [2023-11-19 07:49:17,620 INFO L899 garLoopResultBuilder]: For program point L169(lines 169 177) no Hoare annotation was computed. [2023-11-19 07:49:17,620 INFO L899 garLoopResultBuilder]: For program point L54(lines 54 142) no Hoare annotation was computed. [2023-11-19 07:49:17,620 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 171) no Hoare annotation was computed. [2023-11-19 07:49:17,620 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2023-11-19 07:49:17,620 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 07:49:17,620 INFO L899 garLoopResultBuilder]: For program point L38(lines 35 151) no Hoare annotation was computed. [2023-11-19 07:49:17,621 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 183) no Hoare annotation was computed. [2023-11-19 07:49:17,621 INFO L899 garLoopResultBuilder]: For program point L129(lines 101 136) no Hoare annotation was computed. [2023-11-19 07:49:17,621 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 189) no Hoare annotation was computed. [2023-11-19 07:49:17,621 INFO L899 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2023-11-19 07:49:17,621 INFO L899 garLoopResultBuilder]: For program point L171(line 171) no Hoare annotation was computed. [2023-11-19 07:49:17,621 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 97) no Hoare annotation was computed. [2023-11-19 07:49:17,621 INFO L899 garLoopResultBuilder]: For program point L89(lines 64 97) no Hoare annotation was computed. [2023-11-19 07:49:17,622 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-19 07:49:17,622 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2023-11-19 07:49:17,622 INFO L899 garLoopResultBuilder]: For program point L148(lines 33 156) no Hoare annotation was computed. [2023-11-19 07:49:17,622 INFO L899 garLoopResultBuilder]: For program point L66(lines 66 92) no Hoare annotation was computed. [2023-11-19 07:49:17,622 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 156) no Hoare annotation was computed. [2023-11-19 07:49:17,622 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 07:49:17,623 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 199) no Hoare annotation was computed. [2023-11-19 07:49:17,623 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 84) no Hoare annotation was computed. [2023-11-19 07:49:17,623 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 113) no Hoare annotation was computed. [2023-11-19 07:49:17,623 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 136) no Hoare annotation was computed. [2023-11-19 07:49:17,623 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 151) no Hoare annotation was computed. [2023-11-19 07:49:17,627 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:49:17,630 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:49:17,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:49:17 BoogieIcfgContainer [2023-11-19 07:49:17,641 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:49:17,642 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:49:17,642 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:49:17,642 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:49:17,643 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:11" (3/4) ... [2023-11-19 07:49:17,645 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:49:17,657 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-11-19 07:49:17,657 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 07:49:17,658 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:49:17,658 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:49:17,777 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:49:17,778 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:49:17,778 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:49:17,779 INFO L158 Benchmark]: Toolchain (without parser) took 7722.52ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 99.1MB in the beginning and 106.1MB in the end (delta: -7.0MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2023-11-19 07:49:17,779 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 130.0MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:49:17,780 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.26ms. Allocated memory is still 130.0MB. Free memory was 98.8MB in the beginning and 86.1MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:49:17,780 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.06ms. Allocated memory is still 130.0MB. Free memory was 86.1MB in the beginning and 84.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:49:17,781 INFO L158 Benchmark]: Boogie Preprocessor took 32.74ms. Allocated memory is still 130.0MB. Free memory was 84.2MB in the beginning and 82.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:49:17,781 INFO L158 Benchmark]: RCFGBuilder took 566.55ms. Allocated memory is still 130.0MB. Free memory was 82.5MB in the beginning and 67.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 07:49:17,782 INFO L158 Benchmark]: TraceAbstraction took 6541.43ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 67.2MB in the beginning and 112.4MB in the end (delta: -45.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:49:17,782 INFO L158 Benchmark]: Witness Printer took 136.35ms. Allocated memory is still 157.3MB. Free memory was 112.4MB in the beginning and 106.1MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 07:49:17,785 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 130.0MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 368.26ms. Allocated memory is still 130.0MB. Free memory was 98.8MB in the beginning and 86.1MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.06ms. Allocated memory is still 130.0MB. Free memory was 86.1MB in the beginning and 84.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.74ms. Allocated memory is still 130.0MB. Free memory was 84.2MB in the beginning and 82.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 566.55ms. Allocated memory is still 130.0MB. Free memory was 82.5MB in the beginning and 67.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6541.43ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 67.2MB in the beginning and 112.4MB in the end (delta: -45.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 136.35ms. Allocated memory is still 157.3MB. Free memory was 112.4MB in the beginning and 106.1MB 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.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 46]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 77]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 113]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 171]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 40 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 6.4s, OverallIterations: 9, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 116 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 116 mSDsluCounter, 838 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 547 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 229 IncrementalHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 291 mSDtfsCounter, 229 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 196 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=7, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 35 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 11 NumberOfFragments, 3 HoareAnnotationTreeSize, 1 FomulaSimplifications, 126 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 303 NumberOfCodeBlocks, 275 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 327 ConstructedInterpolants, 0 QuantifiedInterpolants, 898 SizeOfPredicates, 6 NumberOfNonLiveVariables, 327 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 15 InterpolantComputations, 7 PerfectInterpolantSequences, 264/431 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (main__loop_entered == 0) RESULT: Ultimate proved your program to be correct! [2023-11-19 07:49:17,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90fca6c-ce9b-4020-a367-e5aa5d3a3210/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 Result: TRUE