./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/underapprox_1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/underapprox_1-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --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 11d6d848444c2f9afc2eba3aace7d6b72c4d182e1953661ba8811794c092f478 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:14:18,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:14:18,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:14:18,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:14:18,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:14:18,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:14:18,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:14:18,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:14:18,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:14:18,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:14:18,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:14:18,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:14:18,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:14:18,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:14:18,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:14:18,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:14:18,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:14:18,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:14:18,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:14:18,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:14:18,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:14:18,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:14:18,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:14:18,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:14:18,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:14:18,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:14:18,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:14:18,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:14:18,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:14:18,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:14:18,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:14:18,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:14:18,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:14:18,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:14:18,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:14:18,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:14:18,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:14:18,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:14:18,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:14:18,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:14:18,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:14:18,395 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 20:14:18,421 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:14:18,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:14:18,421 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:14:18,422 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:14:18,422 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:14:18,422 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:14:18,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:14:18,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:14:18,423 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:14:18,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:14:18,423 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 20:14:18,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:14:18,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 20:14:18,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:14:18,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:14:18,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:14:18,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:14:18,424 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 20:14:18,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:14:18,424 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:14:18,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:14:18,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:14:18,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:14:18,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:14:18,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:14:18,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:14:18,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:14:18,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:14:18,439 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:14:18,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:14:18,440 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:14:18,440 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:14:18,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:14:18,440 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:14:18,440 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11d6d848444c2f9afc2eba3aace7d6b72c4d182e1953661ba8811794c092f478 [2021-12-06 20:14:18,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:14:18,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:14:18,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:14:18,628 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:14:18,629 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:14:18,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/loop-acceleration/underapprox_1-1.c [2021-12-06 20:14:18,674 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/data/4b5a45339/d89ced3da721450ca45832dbed8c1f71/FLAGd87798184 [2021-12-06 20:14:19,033 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:14:19,033 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/sv-benchmarks/c/loop-acceleration/underapprox_1-1.c [2021-12-06 20:14:19,037 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/data/4b5a45339/d89ced3da721450ca45832dbed8c1f71/FLAGd87798184 [2021-12-06 20:14:19,047 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/data/4b5a45339/d89ced3da721450ca45832dbed8c1f71 [2021-12-06 20:14:19,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:14:19,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:14:19,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:14:19,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:14:19,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:14:19,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:14:19" (1/1) ... [2021-12-06 20:14:19,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@775074fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:14:19, skipping insertion in model container [2021-12-06 20:14:19,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:14:19" (1/1) ... [2021-12-06 20:14:19,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:14:19,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:14:19,172 WARN L230 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_e190f06c-2577-4ec8-b400-58f50b65afb9/sv-benchmarks/c/loop-acceleration/underapprox_1-1.c[327,340] [2021-12-06 20:14:19,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:14:19,185 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:14:19,194 WARN L230 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_e190f06c-2577-4ec8-b400-58f50b65afb9/sv-benchmarks/c/loop-acceleration/underapprox_1-1.c[327,340] [2021-12-06 20:14:19,196 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:14:19,205 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:14:19,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:14:19 WrapperNode [2021-12-06 20:14:19,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:14:19,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:14:19,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:14:19,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:14:19,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:14:19" (1/1) ... [2021-12-06 20:14:19,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:14:19" (1/1) ... [2021-12-06 20:14:19,229 INFO L137 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2021-12-06 20:14:19,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:14:19,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:14:19,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:14:19,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:14:19,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:14:19" (1/1) ... [2021-12-06 20:14:19,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:14:19" (1/1) ... [2021-12-06 20:14:19,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:14:19" (1/1) ... [2021-12-06 20:14:19,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:14:19" (1/1) ... [2021-12-06 20:14:19,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:14:19" (1/1) ... [2021-12-06 20:14:19,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:14:19" (1/1) ... [2021-12-06 20:14:19,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:14:19" (1/1) ... [2021-12-06 20:14:19,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:14:19,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:14:19,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:14:19,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:14:19,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:14:19" (1/1) ... [2021-12-06 20:14:19,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:14:19,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:14:19,273 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:14:19,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:14:19,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:14:19,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:14:19,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:14:19,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:14:19,346 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:14:19,348 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:14:19,417 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:14:19,421 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:14:19,422 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 20:14:19,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:14:19 BoogieIcfgContainer [2021-12-06 20:14:19,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:14:19,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:14:19,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:14:19,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:14:19,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:14:19" (1/3) ... [2021-12-06 20:14:19,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@541dfd01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:14:19, skipping insertion in model container [2021-12-06 20:14:19,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:14:19" (2/3) ... [2021-12-06 20:14:19,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@541dfd01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:14:19, skipping insertion in model container [2021-12-06 20:14:19,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:14:19" (3/3) ... [2021-12-06 20:14:19,430 INFO L111 eAbstractionObserver]: Analyzing ICFG underapprox_1-1.c [2021-12-06 20:14:19,435 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:14:19,435 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 20:14:19,474 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:14:19,480 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 20:14:19,480 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 20:14:19,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 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) [2021-12-06 20:14:19,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 20:14:19,496 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:14:19,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 20:14:19,497 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:14:19,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:14:19,503 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-12-06 20:14:19,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:14:19,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934280064] [2021-12-06 20:14:19,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:14:19,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:14:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:14:19,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:19,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:14:19,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934280064] [2021-12-06 20:14:19,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934280064] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:14:19,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:14:19,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:14:19,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953022658] [2021-12-06 20:14:19,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:14:19,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:14:19,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:14:19,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:14:19,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:14:19,679 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 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) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-12-06 20:14:19,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:14:19,697 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2021-12-06 20:14:19,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:14:19,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-12-06 20:14:19,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:14:19,705 INFO L225 Difference]: With dead ends: 20 [2021-12-06 20:14:19,705 INFO L226 Difference]: Without dead ends: 8 [2021-12-06 20:14:19,707 INFO L932 BasicCegarLoop]: 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 [2021-12-06 20:14:19,711 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:14:19,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:14:19,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-12-06 20:14:19,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-12-06 20:14:19,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2021-12-06 20:14:19,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-12-06 20:14:19,738 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-12-06 20:14:19,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:14:19,738 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-12-06 20:14:19,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-12-06 20:14:19,738 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-12-06 20:14:19,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 20:14:19,738 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:14:19,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:14:19,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 20:14:19,739 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:14:19,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:14:19,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2021-12-06 20:14:19,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:14:19,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185976696] [2021-12-06 20:14:19,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:14:19,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:14:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:14:19,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:19,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:14:19,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185976696] [2021-12-06 20:14:19,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185976696] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:14:19,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255169132] [2021-12-06 20:14:19,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:14:19,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:14:19,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:14:19,821 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:14:19,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 20:14:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:14:19,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 20:14:19,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:14:19,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:19,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:14:19,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:19,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255169132] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:14:19,991 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:14:19,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 9 [2021-12-06 20:14:19,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124476056] [2021-12-06 20:14:19,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:14:19,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:14:19,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:14:19,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:14:19,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:14:19,995 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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) [2021-12-06 20:14:20,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:14:20,062 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-12-06 20:14:20,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:14:20,062 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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 7 [2021-12-06 20:14:20,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:14:20,062 INFO L225 Difference]: With dead ends: 19 [2021-12-06 20:14:20,062 INFO L226 Difference]: Without dead ends: 11 [2021-12-06 20:14:20,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-12-06 20:14:20,064 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:14:20,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 31 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:14:20,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-12-06 20:14:20,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-12-06 20:14:20,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 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) [2021-12-06 20:14:20,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-12-06 20:14:20,068 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2021-12-06 20:14:20,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:14:20,068 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-12-06 20:14:20,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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) [2021-12-06 20:14:20,068 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-12-06 20:14:20,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 20:14:20,068 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:14:20,069 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2021-12-06 20:14:20,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:14:20,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:14:20,271 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:14:20,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:14:20,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1922847381, now seen corresponding path program 2 times [2021-12-06 20:14:20,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:14:20,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292705321] [2021-12-06 20:14:20,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:14:20,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:14:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:14:20,458 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:20,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:14:20,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292705321] [2021-12-06 20:14:20,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292705321] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:14:20,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251764399] [2021-12-06 20:14:20,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:14:20,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:14:20,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:14:20,460 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:14:20,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 20:14:20,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:14:20,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:14:20,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 20:14:20,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:14:20,546 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:20,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:14:20,631 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:20,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251764399] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:14:20,631 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:14:20,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2021-12-06 20:14:20,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307958013] [2021-12-06 20:14:20,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:14:20,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 20:14:20,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:14:20,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 20:14:20,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-12-06 20:14:20,633 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 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) [2021-12-06 20:14:21,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:14:21,843 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2021-12-06 20:14:21,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 20:14:21,843 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 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 10 [2021-12-06 20:14:21,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:14:21,844 INFO L225 Difference]: With dead ends: 33 [2021-12-06 20:14:21,844 INFO L226 Difference]: Without dead ends: 21 [2021-12-06 20:14:21,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2021-12-06 20:14:21,846 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 28 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:14:21,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 57 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 20:14:21,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-12-06 20:14:21,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2021-12-06 20:14:21,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 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) [2021-12-06 20:14:21,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-12-06 20:14:21,849 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 10 [2021-12-06 20:14:21,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:14:21,850 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-12-06 20:14:21,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 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) [2021-12-06 20:14:21,850 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-12-06 20:14:21,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 20:14:21,850 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:14:21,850 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2021-12-06 20:14:21,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 20:14:22,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-06 20:14:22,053 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:14:22,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:14:22,055 INFO L85 PathProgramCache]: Analyzing trace with hash -967103989, now seen corresponding path program 3 times [2021-12-06 20:14:22,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:14:22,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316703302] [2021-12-06 20:14:22,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:14:22,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:14:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:14:22,078 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:14:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:14:22,103 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:14:22,103 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 20:14:22,104 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 20:14:22,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 20:14:22,108 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1] [2021-12-06 20:14:22,109 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 20:14:22,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 08:14:22 BoogieIcfgContainer [2021-12-06 20:14:22,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 20:14:22,124 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 20:14:22,124 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 20:14:22,124 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 20:14:22,125 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:14:19" (3/4) ... [2021-12-06 20:14:22,126 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 20:14:22,150 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 20:14:22,150 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 20:14:22,150 INFO L158 Benchmark]: Toolchain (without parser) took 3100.59ms. Allocated memory is still 123.7MB. Free memory was 97.5MB in the beginning and 49.4MB in the end (delta: 48.1MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. [2021-12-06 20:14:22,150 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 75.5MB. Free memory was 50.1MB in the beginning and 50.0MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:14:22,151 INFO L158 Benchmark]: CACSL2BoogieTranslator took 155.30ms. Allocated memory is still 123.7MB. Free memory was 97.2MB in the beginning and 95.7MB in the end (delta: 1.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-06 20:14:22,151 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.84ms. Allocated memory is still 123.7MB. Free memory was 95.7MB in the beginning and 94.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 20:14:22,151 INFO L158 Benchmark]: Boogie Preprocessor took 13.24ms. Allocated memory is still 123.7MB. Free memory was 94.4MB in the beginning and 93.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:14:22,152 INFO L158 Benchmark]: RCFGBuilder took 179.91ms. Allocated memory is still 123.7MB. Free memory was 93.3MB in the beginning and 84.7MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 20:14:22,152 INFO L158 Benchmark]: TraceAbstraction took 2698.88ms. Allocated memory is still 123.7MB. Free memory was 84.4MB in the beginning and 51.5MB in the end (delta: 32.9MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. [2021-12-06 20:14:22,152 INFO L158 Benchmark]: Witness Printer took 25.78ms. Allocated memory is still 123.7MB. Free memory was 51.5MB in the beginning and 49.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 20:14:22,154 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 75.5MB. Free memory was 50.1MB in the beginning and 50.0MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 155.30ms. Allocated memory is still 123.7MB. Free memory was 97.2MB in the beginning and 95.7MB in the end (delta: 1.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.84ms. Allocated memory is still 123.7MB. Free memory was 95.7MB in the beginning and 94.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.24ms. Allocated memory is still 123.7MB. Free memory was 94.4MB in the beginning and 93.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 179.91ms. Allocated memory is still 123.7MB. Free memory was 93.3MB in the beginning and 84.7MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2698.88ms. Allocated memory is still 123.7MB. Free memory was 84.4MB in the beginning and 51.5MB in the end (delta: 32.9MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. * Witness Printer took 25.78ms. Allocated memory is still 123.7MB. Free memory was 51.5MB in the beginning and 49.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L13] unsigned int x = 0; [L14] unsigned int y = 1; VAL [x=0, y=1] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=1, y=2] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=2, y=4] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=3, y=8] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=4, y=16] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=5, y=32] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=6, y=64] [L16] COND FALSE !(x < 6) VAL [x=6, y=64] [L21] CALL __VERIFIER_assert(y != 64) [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 106 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 84 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 124 IncrementalHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 22 mSDtfsCounter, 124 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=3, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 175 SizeOfPredicates, 4 NumberOfNonLiveVariables, 99 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-06 20:14:22,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f06c-2577-4ec8-b400-58f50b65afb9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE