./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-programs/partial_mod_count_limited_gen.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-programs/partial_mod_count_limited_gen.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF --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 404aca328acb019974a4013e1ced341d9a60ed0a822c21407be3158ee94f2c2d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:15:16,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:15:16,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:15:16,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:15:16,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:15:16,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:15:16,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:15:16,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:15:16,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:15:16,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:15:16,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:15:16,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:15:16,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:15:16,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:15:16,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:15:16,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:15:16,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:15:16,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:15:16,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:15:16,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:15:16,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:15:16,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:15:16,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:15:16,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:15:16,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:15:16,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:15:16,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:15:16,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:15:16,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:15:16,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:15:16,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:15:16,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:15:16,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:15:16,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:15:16,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:15:16,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:15:16,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:15:16,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:15:16,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:15:16,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:15:16,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:15:16,331 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 07:15:16,355 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:15:16,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:15:16,356 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:15:16,356 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:15:16,357 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:15:16,357 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:15:16,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:15:16,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:15:16,359 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:15:16,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:15:16,359 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:15:16,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:15:16,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:15:16,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:15:16,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:15:16,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:15:16,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:15:16,361 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:15:16,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:15:16,361 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:15:16,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:15:16,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:15:16,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:15:16,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:15:16,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:15:16,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:15:16,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:15:16,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:15:16,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:15:16,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:15:16,364 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:15:16,364 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:15:16,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:15:16,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:15:16,365 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_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 404aca328acb019974a4013e1ced341d9a60ed0a822c21407be3158ee94f2c2d [2021-11-20 07:15:16,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:15:16,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:15:16,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:15:16,668 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:15:16,669 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:15:16,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/array-programs/partial_mod_count_limited_gen.c [2021-11-20 07:15:16,741 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/data/a3ed585ea/f34f3621dfe045e1a45c7352296ad82c/FLAGae982532d [2021-11-20 07:15:17,194 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:15:17,195 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/sv-benchmarks/c/array-programs/partial_mod_count_limited_gen.c [2021-11-20 07:15:17,201 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/data/a3ed585ea/f34f3621dfe045e1a45c7352296ad82c/FLAGae982532d [2021-11-20 07:15:17,591 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/data/a3ed585ea/f34f3621dfe045e1a45c7352296ad82c [2021-11-20 07:15:17,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:15:17,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:15:17,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:15:17,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:15:17,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:15:17,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:15:17" (1/1) ... [2021-11-20 07:15:17,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f56597e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:17, skipping insertion in model container [2021-11-20 07:15:17,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:15:17" (1/1) ... [2021-11-20 07:15:17,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:15:17,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:15:17,815 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_9dfd85c0-7d2d-4672-b93c-52a34868e427/sv-benchmarks/c/array-programs/partial_mod_count_limited_gen.c[333,346] [2021-11-20 07:15:17,865 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:15:17,874 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:15:17,886 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_9dfd85c0-7d2d-4672-b93c-52a34868e427/sv-benchmarks/c/array-programs/partial_mod_count_limited_gen.c[333,346] [2021-11-20 07:15:17,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:15:17,911 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:15:17,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:17 WrapperNode [2021-11-20 07:15:17,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:15:17,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:15:17,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:15:17,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:15:17,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:17" (1/1) ... [2021-11-20 07:15:17,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:17" (1/1) ... [2021-11-20 07:15:17,987 INFO L137 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2021-11-20 07:15:17,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:15:17,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:15:17,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:15:17,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:15:18,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:17" (1/1) ... [2021-11-20 07:15:18,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:17" (1/1) ... [2021-11-20 07:15:18,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:17" (1/1) ... [2021-11-20 07:15:18,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:17" (1/1) ... [2021-11-20 07:15:18,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:17" (1/1) ... [2021-11-20 07:15:18,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:17" (1/1) ... [2021-11-20 07:15:18,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:17" (1/1) ... [2021-11-20 07:15:18,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:15:18,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:15:18,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:15:18,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:15:18,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:17" (1/1) ... [2021-11-20 07:15:18,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:15:18,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:15:18,103 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:15:18,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:15:18,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:15:18,153 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 07:15:18,153 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 07:15:18,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:15:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:15:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:15:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:15:18,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:15:18,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:15:18,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:15:18,232 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:15:18,234 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:15:20,404 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:15:20,412 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:15:20,412 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 07:15:20,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:15:20 BoogieIcfgContainer [2021-11-20 07:15:20,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:15:20,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:15:20,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:15:20,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:15:20,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:15:17" (1/3) ... [2021-11-20 07:15:20,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac1d17e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:15:20, skipping insertion in model container [2021-11-20 07:15:20,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:15:17" (2/3) ... [2021-11-20 07:15:20,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac1d17e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:15:20, skipping insertion in model container [2021-11-20 07:15:20,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:15:20" (3/3) ... [2021-11-20 07:15:20,422 INFO L111 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_gen.c [2021-11-20 07:15:20,428 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:15:20,428 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:15:20,479 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:15:20,487 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 [2021-11-20 07:15:20,487 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:15:20,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:15:20,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 07:15:20,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:15:20,512 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:15:20,512 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:15:20,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:15:20,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1878530085, now seen corresponding path program 1 times [2021-11-20 07:15:20,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:15:20,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526565468] [2021-11-20 07:15:20,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:15:20,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:15:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:20,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:15:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:20,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:15:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 07:15:20,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:15:20,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526565468] [2021-11-20 07:15:20,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526565468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:15:20,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:15:20,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:15:20,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680342490] [2021-11-20 07:15:20,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:15:20,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:15:20,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:15:20,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:15:20,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:15:20,732 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:15:20,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:15:20,752 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2021-11-20 07:15:20,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:15:20,755 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-11-20 07:15:20,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:15:20,762 INFO L225 Difference]: With dead ends: 51 [2021-11-20 07:15:20,763 INFO L226 Difference]: Without dead ends: 23 [2021-11-20 07:15:20,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:15:20,770 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:15:20,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:15:20,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-20 07:15:20,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-20 07:15:20,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:15:20,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2021-11-20 07:15:20,811 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 20 [2021-11-20 07:15:20,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:15:20,811 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2021-11-20 07:15:20,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:15:20,812 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2021-11-20 07:15:20,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 07:15:20,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:15:20,814 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:15:20,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:15:20,815 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:15:20,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:15:20,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2096433435, now seen corresponding path program 1 times [2021-11-20 07:15:20,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:15:20,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844552380] [2021-11-20 07:15:20,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:15:20,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:15:20,836 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:15:20,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [606290984] [2021-11-20 07:15:20,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:15:20,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:15:20,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:15:20,850 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:15:20,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:15:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:20,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:15:20,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:15:21,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 07:15:21,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:15:21,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:15:21,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844552380] [2021-11-20 07:15:21,123 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:15:21,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606290984] [2021-11-20 07:15:21,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606290984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:15:21,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:15:21,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:15:21,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788992853] [2021-11-20 07:15:21,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:15:21,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:15:21,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:15:21,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:15:21,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:15:21,140 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:15:21,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:15:21,267 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2021-11-20 07:15:21,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:15:21,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2021-11-20 07:15:21,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:15:21,270 INFO L225 Difference]: With dead ends: 45 [2021-11-20 07:15:21,270 INFO L226 Difference]: Without dead ends: 36 [2021-11-20 07:15:21,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:15:21,272 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 32 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:15:21,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 29 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:15:21,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-20 07:15:21,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 24. [2021-11-20 07:15:21,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:15:21,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2021-11-20 07:15:21,296 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 20 [2021-11-20 07:15:21,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:15:21,298 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2021-11-20 07:15:21,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:15:21,298 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2021-11-20 07:15:21,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 07:15:21,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:15:21,300 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:15:21,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:15:21,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:15:21,522 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:15:21,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:15:21,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1636168002, now seen corresponding path program 1 times [2021-11-20 07:15:21,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:15:21,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650739711] [2021-11-20 07:15:21,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:15:21,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:15:21,537 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:15:21,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [156514291] [2021-11-20 07:15:21,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:15:21,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:15:21,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:15:21,554 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:15:21,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:15:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:21,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:15:21,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:15:21,816 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 07:15:21,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:15:21,938 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 07:15:21,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:15:21,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650739711] [2021-11-20 07:15:21,939 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:15:21,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156514291] [2021-11-20 07:15:21,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156514291] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:15:21,940 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:15:21,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-11-20 07:15:21,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661497641] [2021-11-20 07:15:21,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:15:21,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:15:21,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:15:21,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:15:21,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:15:21,943 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 07:15:22,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:15:22,155 INFO L93 Difference]: Finished difference Result 73 states and 91 transitions. [2021-11-20 07:15:22,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:15:22,157 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2021-11-20 07:15:22,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:15:22,162 INFO L225 Difference]: With dead ends: 73 [2021-11-20 07:15:22,162 INFO L226 Difference]: Without dead ends: 64 [2021-11-20 07:15:22,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:15:22,168 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 90 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:15:22,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 54 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:15:22,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-20 07:15:22,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 39. [2021-11-20 07:15:22,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 35 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:15:22,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2021-11-20 07:15:22,194 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 25 [2021-11-20 07:15:22,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:15:22,195 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2021-11-20 07:15:22,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 07:15:22,196 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2021-11-20 07:15:22,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 07:15:22,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:15:22,198 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:15:22,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:15:22,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:15:22,418 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:15:22,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:15:22,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1458835931, now seen corresponding path program 2 times [2021-11-20 07:15:22,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:15:22,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535233178] [2021-11-20 07:15:22,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:15:22,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:15:22,433 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:15:22,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1371758414] [2021-11-20 07:15:22,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:15:22,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:15:22,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:15:22,435 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:15:22,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 07:15:22,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:15:22,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:15:22,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 07:15:22,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:15:22,825 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 07:15:22,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:15:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 07:15:23,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:15:23,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535233178] [2021-11-20 07:15:23,017 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:15:23,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371758414] [2021-11-20 07:15:23,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371758414] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:15:23,018 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:15:23,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-11-20 07:15:23,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394042447] [2021-11-20 07:15:23,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:15:23,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:15:23,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:15:23,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:15:23,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:15:23,023 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 07:15:24,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:15:24,171 INFO L93 Difference]: Finished difference Result 151 states and 190 transitions. [2021-11-20 07:15:24,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 07:15:24,172 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2021-11-20 07:15:24,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:15:24,174 INFO L225 Difference]: With dead ends: 151 [2021-11-20 07:15:24,174 INFO L226 Difference]: Without dead ends: 142 [2021-11-20 07:15:24,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2021-11-20 07:15:24,176 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 368 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:15:24,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 99 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 07:15:24,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-20 07:15:24,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 69. [2021-11-20 07:15:24,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 65 states have (on average 1.353846153846154) internal successors, (88), 65 states have internal predecessors, (88), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 07:15:24,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 92 transitions. [2021-11-20 07:15:24,187 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 92 transitions. Word has length 40 [2021-11-20 07:15:24,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:15:24,188 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 92 transitions. [2021-11-20 07:15:24,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 07:15:24,188 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 92 transitions. [2021-11-20 07:15:24,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-20 07:15:24,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:15:24,191 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:15:24,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:15:24,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-20 07:15:24,414 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:15:24,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:15:24,414 INFO L85 PathProgramCache]: Analyzing trace with hash -54174981, now seen corresponding path program 3 times [2021-11-20 07:15:24,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:15:24,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136208189] [2021-11-20 07:15:24,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:15:24,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:15:24,431 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:15:24,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [965925527] [2021-11-20 07:15:24,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 07:15:24,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:15:24,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:15:24,449 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:15:24,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd85c0-7d2d-4672-b93c-52a34868e427/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process