./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_2+newton_3_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_3_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0 --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 3c7e4faaabab9b2f322684d2701654a5044e8a4a6ec20b8d467b524bec442165 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:38:14,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:38:14,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:38:14,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:38:14,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:38:14,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:38:14,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:38:14,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:38:14,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:38:14,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:38:14,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:38:14,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:38:14,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:38:14,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:38:14,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:38:14,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:38:14,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:38:14,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:38:14,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:38:14,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:38:14,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:38:14,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:38:14,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:38:14,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:38:14,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:38:14,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:38:14,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:38:14,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:38:14,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:38:14,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:38:14,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:38:14,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:38:14,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:38:14,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:38:14,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:38:14,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:38:14,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:38:14,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:38:14,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:38:14,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:38:14,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:38:14,406 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:38:14,436 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:38:14,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:38:14,437 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:38:14,437 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:38:14,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:38:14,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:38:14,439 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:38:14,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:38:14,440 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:38:14,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:38:14,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:38:14,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:38:14,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:38:14,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:38:14,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:38:14,441 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:38:14,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:38:14,441 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:38:14,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:38:14,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:38:14,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:38:14,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:38:14,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:38:14,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:38:14,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:38:14,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:38:14,443 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:38:14,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:38:14,444 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:38:14,444 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:38:14,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:38:14,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:38:14,445 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_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c7e4faaabab9b2f322684d2701654a5044e8a4a6ec20b8d467b524bec442165 [2021-11-22 15:38:14,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:38:14,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:38:14,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:38:14,849 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:38:14,850 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:38:14,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/combinations/gcd_2+newton_3_5.i [2021-11-22 15:38:14,934 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/data/6b1a3d5e4/d6fc0dc261454a4685595ac1a974ba5c/FLAGca342f637 [2021-11-22 15:38:15,455 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:38:15,456 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/sv-benchmarks/c/combinations/gcd_2+newton_3_5.i [2021-11-22 15:38:15,466 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/data/6b1a3d5e4/d6fc0dc261454a4685595ac1a974ba5c/FLAGca342f637 [2021-11-22 15:38:15,814 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/data/6b1a3d5e4/d6fc0dc261454a4685595ac1a974ba5c [2021-11-22 15:38:15,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:38:15,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:38:15,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:38:15,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:38:15,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:38:15,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:38:15" (1/1) ... [2021-11-22 15:38:15,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1752faf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:38:15, skipping insertion in model container [2021-11-22 15:38:15,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:38:15" (1/1) ... [2021-11-22 15:38:15,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:38:15,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:38:16,053 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_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/sv-benchmarks/c/combinations/gcd_2+newton_3_5.i[1226,1239] [2021-11-22 15:38:16,080 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_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/sv-benchmarks/c/combinations/gcd_2+newton_3_5.i[2862,2875] [2021-11-22 15:38:16,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:38:16,090 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:38:16,103 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_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/sv-benchmarks/c/combinations/gcd_2+newton_3_5.i[1226,1239] [2021-11-22 15:38:16,116 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_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/sv-benchmarks/c/combinations/gcd_2+newton_3_5.i[2862,2875] [2021-11-22 15:38:16,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:38:16,133 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:38:16,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:38:16 WrapperNode [2021-11-22 15:38:16,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:38:16,135 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:38:16,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:38:16,135 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:38:16,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:38:16" (1/1) ... [2021-11-22 15:38:16,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:38:16" (1/1) ... [2021-11-22 15:38:16,183 INFO L137 Inliner]: procedures = 27, calls = 18, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 100 [2021-11-22 15:38:16,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:38:16,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:38:16,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:38:16,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:38:16,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:38:16" (1/1) ... [2021-11-22 15:38:16,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:38:16" (1/1) ... [2021-11-22 15:38:16,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:38:16" (1/1) ... [2021-11-22 15:38:16,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:38:16" (1/1) ... [2021-11-22 15:38:16,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:38:16" (1/1) ... [2021-11-22 15:38:16,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:38:16" (1/1) ... [2021-11-22 15:38:16,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:38:16" (1/1) ... [2021-11-22 15:38:16,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:38:16,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:38:16,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:38:16,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:38:16,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:38:16" (1/1) ... [2021-11-22 15:38:16,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:38:16,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:38:16,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:38:16,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:38:16,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:38:16,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:38:16,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:38:16,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:38:16,417 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:38:16,419 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:38:16,623 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:38:16,630 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:38:16,630 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 15:38:16,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:38:16 BoogieIcfgContainer [2021-11-22 15:38:16,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:38:16,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:38:16,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:38:16,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:38:16,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:38:15" (1/3) ... [2021-11-22 15:38:16,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f1c661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:38:16, skipping insertion in model container [2021-11-22 15:38:16,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:38:16" (2/3) ... [2021-11-22 15:38:16,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f1c661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:38:16, skipping insertion in model container [2021-11-22 15:38:16,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:38:16" (3/3) ... [2021-11-22 15:38:16,659 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_3_5.i [2021-11-22 15:38:16,665 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:38:16,665 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-22 15:38:16,731 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:38:16,738 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 [2021-11-22 15:38:16,739 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-22 15:38:16,753 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:38:16,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 15:38:16,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:38:16,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:38:16,760 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:38:16,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:38:16,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1947301547, now seen corresponding path program 1 times [2021-11-22 15:38:16,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:38:16,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730355035] [2021-11-22 15:38:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:38:16,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:38:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:38:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:38:17,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:38:17,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730355035] [2021-11-22 15:38:17,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730355035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:38:17,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:38:17,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:38:17,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928447498] [2021-11-22 15:38:17,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:38:17,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:38:17,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:38:17,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:38:17,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:38:17,045 INFO L87 Difference]: Start difference. First operand has 31 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-11-22 15:38:17,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:38:17,107 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2021-11-22 15:38:17,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:38:17,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-22 15:38:17,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:38:17,119 INFO L225 Difference]: With dead ends: 73 [2021-11-22 15:38:17,119 INFO L226 Difference]: Without dead ends: 24 [2021-11-22 15:38:17,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:38:17,127 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 21 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:38:17,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 87 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:38:17,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-22 15:38:17,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-22 15:38:17,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 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) [2021-11-22 15:38:17,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-11-22 15:38:17,165 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 11 [2021-11-22 15:38:17,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:38:17,166 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-11-22 15:38:17,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-11-22 15:38:17,166 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-11-22 15:38:17,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 15:38:17,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:38:17,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:38:17,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:38:17,168 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:38:17,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:38:17,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1364487322, now seen corresponding path program 1 times [2021-11-22 15:38:17,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:38:17,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033077145] [2021-11-22 15:38:17,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:38:17,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:38:17,188 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:38:17,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [173273712] [2021-11-22 15:38:17,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:38:17,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:38:17,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:38:17,192 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:38:17,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:38:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:38:17,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 15:38:17,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:38:17,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:38:17,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:38:17,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:38:17,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:38:17,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033077145] [2021-11-22 15:38:17,607 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:38:17,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173273712] [2021-11-22 15:38:17,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173273712] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:38:17,608 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:38:17,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-11-22 15:38:17,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534858513] [2021-11-22 15:38:17,609 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:38:17,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:38:17,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:38:17,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:38:17,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:38:17,612 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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) [2021-11-22 15:38:17,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:38:17,745 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-11-22 15:38:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:38:17,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 12 [2021-11-22 15:38:17,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:38:17,748 INFO L225 Difference]: With dead ends: 31 [2021-11-22 15:38:17,749 INFO L226 Difference]: Without dead ends: 25 [2021-11-22 15:38:17,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:38:17,754 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:38:17,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 105 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:38:17,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-22 15:38:17,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-22 15:38:17,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 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) [2021-11-22 15:38:17,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-11-22 15:38:17,770 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 12 [2021-11-22 15:38:17,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:38:17,771 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-11-22 15:38:17,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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) [2021-11-22 15:38:17,776 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-11-22 15:38:17,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 15:38:17,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:38:17,777 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:38:17,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:38:18,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:38:18,002 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:38:18,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:38:18,003 INFO L85 PathProgramCache]: Analyzing trace with hash 950727157, now seen corresponding path program 2 times [2021-11-22 15:38:18,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:38:18,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814122319] [2021-11-22 15:38:18,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:38:18,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:38:18,015 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:38:18,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [740387200] [2021-11-22 15:38:18,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:38:18,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:38:18,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:38:18,017 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:38:18,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 15:38:18,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:38:18,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:38:18,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-22 15:38:18,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:39:11,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:39:11,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:40:08,589 WARN L860 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_gcd_test_~b#1| 0) (<= |c_ULTIMATE.start_main1_~y~0#1| 0) (forall ((|v_ULTIMATE.start_gcd_test_~a#1_15| Int)) (or (< |v_ULTIMATE.start_gcd_test_~a#1_15| |c_ULTIMATE.start_gcd_test_~b#1|) (and (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse4 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse0 (mod .cse4 256))) (or (let ((.cse1 (<= 0 |ULTIMATE.start_gcd_test_~a#1|)) (.cse3 (= .cse4 0))) (and (or (not (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_15| .cse0) 256) 0)) (<= .cse0 |c_ULTIMATE.start_main1_~y~0#1|) (< |ULTIMATE.start_gcd_test_~a#1| 0)) (let ((.cse2 (mod (+ (* |c_ULTIMATE.start_gcd_test_~b#1| 255) .cse4) 256))) (or .cse1 (<= .cse2 |c_ULTIMATE.start_main1_~y~0#1|) (< |c_ULTIMATE.start_gcd_test_~b#1| 0) (< 127 .cse2) .cse3 (not (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_15| .cse2) 256) 0)))) (let ((.cse5 (mod (+ |c_ULTIMATE.start_gcd_test_~b#1| .cse4) 256))) (or .cse1 (<= 0 |c_ULTIMATE.start_gcd_test_~b#1|) (<= .cse5 |c_ULTIMATE.start_main1_~y~0#1|) .cse3 (not (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_15| .cse5) 256) 0)) (< 127 .cse5))))) (< 127 .cse0))))) (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse6 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (or (<= (mod .cse6 256) 127) (let ((.cse7 (<= 0 |ULTIMATE.start_gcd_test_~a#1|))) (and (let ((.cse8 (mod (+ (* |c_ULTIMATE.start_gcd_test_~b#1| 255) .cse6) 256))) (or .cse7 (<= .cse8 |c_ULTIMATE.start_main1_~y~0#1|) (< |c_ULTIMATE.start_gcd_test_~b#1| 0) (< 127 .cse8) (not (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_15| .cse8) 256) 0)))) (let ((.cse9 (mod (+ |c_ULTIMATE.start_gcd_test_~b#1| .cse6) 256))) (or .cse7 (<= 0 |c_ULTIMATE.start_gcd_test_~b#1|) (<= .cse9 |c_ULTIMATE.start_main1_~y~0#1|) (not (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_15| .cse9) 256) 0)) (< 127 .cse9)))))))))))) is different from true [2021-11-22 15:40:29,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-22 15:40:29,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:40:29,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814122319] [2021-11-22 15:40:29,901 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:40:29,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740387200] [2021-11-22 15:40:29,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740387200] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:40:29,901 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:40:29,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-11-22 15:40:29,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957846109] [2021-11-22 15:40:29,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:40:29,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-22 15:40:29,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:40:29,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-22 15:40:29,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=184, Unknown=13, NotChecked=28, Total=272 [2021-11-22 15:40:29,904 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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) [2021-11-22 15:40:31,958 WARN L860 $PredicateComparison]: unable to prove that (and (<= 0 |c_ULTIMATE.start_gcd_test_~b#1|) (= |c_ULTIMATE.start_gcd_test_~b#1| |c_ULTIMATE.start_main1_~y~0#1|) (or (= |c_ULTIMATE.start_gcd_test_~b#1| 0) (<= |c_ULTIMATE.start_main1_~y~0#1| 0) (forall ((|v_ULTIMATE.start_gcd_test_~a#1_15| Int)) (or (< |v_ULTIMATE.start_gcd_test_~a#1_15| |c_ULTIMATE.start_gcd_test_~b#1|) (and (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse4 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse0 (mod .cse4 256))) (or (let ((.cse1 (<= 0 |ULTIMATE.start_gcd_test_~a#1|)) (.cse3 (= .cse4 0))) (and (or (not (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_15| .cse0) 256) 0)) (<= .cse0 |c_ULTIMATE.start_main1_~y~0#1|) (< |ULTIMATE.start_gcd_test_~a#1| 0)) (let ((.cse2 (mod (+ (* |c_ULTIMATE.start_gcd_test_~b#1| 255) .cse4) 256))) (or .cse1 (<= .cse2 |c_ULTIMATE.start_main1_~y~0#1|) (< |c_ULTIMATE.start_gcd_test_~b#1| 0) (< 127 .cse2) .cse3 (not (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_15| .cse2) 256) 0)))) (let ((.cse5 (mod (+ |c_ULTIMATE.start_gcd_test_~b#1| .cse4) 256))) (or .cse1 (<= 0 |c_ULTIMATE.start_gcd_test_~b#1|) (<= .cse5 |c_ULTIMATE.start_main1_~y~0#1|) .cse3 (not (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_15| .cse5) 256) 0)) (< 127 .cse5))))) (< 127 .cse0))))) (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse6 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (or (<= (mod .cse6 256) 127) (let ((.cse7 (<= 0 |ULTIMATE.start_gcd_test_~a#1|))) (and (let ((.cse8 (mod (+ (* |c_ULTIMATE.start_gcd_test_~b#1| 255) .cse6) 256))) (or .cse7 (<= .cse8 |c_ULTIMATE.start_main1_~y~0#1|) (< |c_ULTIMATE.start_gcd_test_~b#1| 0) (< 127 .cse8) (not (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_15| .cse8) 256) 0)))) (let ((.cse9 (mod (+ |c_ULTIMATE.start_gcd_test_~b#1| .cse6) 256))) (or .cse7 (<= 0 |c_ULTIMATE.start_gcd_test_~b#1|) (<= .cse9 |c_ULTIMATE.start_main1_~y~0#1|) (not (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_15| .cse9) 256) 0)) (< 127 .cse9)))))))))))) (<= |c_ULTIMATE.start_main1_~y~0#1| 127)) is different from true [2021-11-22 15:40:40,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:40:40,775 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-11-22 15:40:40,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 15:40:40,776 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-22 15:40:40,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:40:40,778 INFO L225 Difference]: With dead ends: 32 [2021-11-22 15:40:40,778 INFO L226 Difference]: Without dead ends: 26 [2021-11-22 15:40:40,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 56.4s TimeCoverageRelationStatistics Valid=55, Invalid=211, Unknown=14, NotChecked=62, Total=342 [2021-11-22 15:40:40,780 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 8 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:40:40,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 148 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 39 Unchecked, 0.0s Time] [2021-11-22 15:40:40,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-22 15:40:40,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-22 15:40:40,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 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) [2021-11-22 15:40:40,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-11-22 15:40:40,785 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 13 [2021-11-22 15:40:40,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:40:40,786 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-11-22 15:40:40,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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) [2021-11-22 15:40:40,786 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-11-22 15:40:40,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 15:40:40,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:40:40,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:40:40,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:40:40,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-22 15:40:40,989 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:40:40,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:40:40,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1277269317, now seen corresponding path program 1 times [2021-11-22 15:40:40,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:40:40,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35415225] [2021-11-22 15:40:40,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:40:40,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:40:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:40:41,008 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:40:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:40:41,056 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:40:41,056 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-22 15:40:41,059 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-22 15:40:41,062 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-22 15:40:41,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:40:41,069 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2021-11-22 15:40:41,072 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 15:40:41,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 03:40:41 BoogieIcfgContainer [2021-11-22 15:40:41,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 15:40:41,104 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 15:40:41,104 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 15:40:41,104 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 15:40:41,104 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:38:16" (3/4) ... [2021-11-22 15:40:41,106 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-22 15:40:41,106 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 15:40:41,109 INFO L158 Benchmark]: Toolchain (without parser) took 145289.25ms. Allocated memory was 81.8MB in the beginning and 188.7MB in the end (delta: 107.0MB). Free memory was 46.6MB in the beginning and 55.6MB in the end (delta: -9.0MB). Peak memory consumption was 97.0MB. Max. memory is 16.1GB. [2021-11-22 15:40:41,110 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 81.8MB. Free memory was 62.8MB in the beginning and 62.7MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:40:41,110 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.35ms. Allocated memory was 81.8MB in the beginning and 107.0MB in the end (delta: 25.2MB). Free memory was 46.4MB in the beginning and 82.4MB in the end (delta: -36.1MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2021-11-22 15:40:41,111 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.48ms. Allocated memory is still 107.0MB. Free memory was 82.4MB in the beginning and 80.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:40:41,111 INFO L158 Benchmark]: Boogie Preprocessor took 32.50ms. Allocated memory is still 107.0MB. Free memory was 80.4MB in the beginning and 78.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:40:41,111 INFO L158 Benchmark]: RCFGBuilder took 414.13ms. Allocated memory is still 107.0MB. Free memory was 78.9MB in the beginning and 68.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 15:40:41,112 INFO L158 Benchmark]: TraceAbstraction took 144456.54ms. Allocated memory was 107.0MB in the beginning and 188.7MB in the end (delta: 81.8MB). Free memory was 67.5MB in the beginning and 55.6MB in the end (delta: 12.0MB). Peak memory consumption was 95.2MB. Max. memory is 16.1GB. [2021-11-22 15:40:41,112 INFO L158 Benchmark]: Witness Printer took 2.87ms. Allocated memory is still 188.7MB. Free memory is still 55.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:40:41,114 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 81.8MB. Free memory was 62.8MB in the beginning and 62.7MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 314.35ms. Allocated memory was 81.8MB in the beginning and 107.0MB in the end (delta: 25.2MB). Free memory was 46.4MB in the beginning and 82.4MB in the end (delta: -36.1MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.48ms. Allocated memory is still 107.0MB. Free memory was 82.4MB in the beginning and 80.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.50ms. Allocated memory is still 107.0MB. Free memory was 80.4MB in the beginning and 78.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 414.13ms. Allocated memory is still 107.0MB. Free memory was 78.9MB in the beginning and 68.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 144456.54ms. Allocated memory was 107.0MB in the beginning and 188.7MB in the end (delta: 81.8MB). Free memory was 67.5MB in the beginning and 55.6MB in the end (delta: 12.0MB). Peak memory consumption was 95.2MB. Max. memory is 16.1GB. * Witness Printer took 2.87ms. Allocated memory is still 188.7MB. Free memory is still 55.6MB. There was no memory consumed. 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 - UnprovableResult [Line: 102]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 97. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -1.0f && IN < 1.0f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -1.0f && IN < 1.0f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=49, x=49] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=49, x=49] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L95] CALL, EXPR f(x) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=52, x=52] [L95] RET, EXPR f(x) [L95] CALL, EXPR fp(x) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=52, x=52] [L95] RET, EXPR fp(x) [L95] x = x - f(x)/fp(x) [L97] CALL, EXPR f(x) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=51, x=51] [L97] RET, EXPR f(x) [L97] CALL, EXPR fp(x) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=51, x=51] [L97] RET, EXPR fp(x) [L97] x = x - f(x)/fp(x) [L101] COND TRUE !(x < 0.1) VAL [IN=49] [L102] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 144.3s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 11.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 340 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 39 IncrementalHoareTripleChecker+Unchecked, 271 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 61 IncrementalHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 69 mSDtfsCounter, 61 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 56.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 22, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 132.2s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 56 ConstructedInterpolants, 8 QuantifiedInterpolants, 1043 SizeOfPredicates, 17 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 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 could not prove your program: unable to determine feasibility of some traces [2021-11-22 15:40:41,357 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-22 15:40:41,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_3_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0 --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 3c7e4faaabab9b2f322684d2701654a5044e8a4a6ec20b8d467b524bec442165 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:40:43,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:40:43,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:40:43,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:40:43,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:40:43,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:40:43,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:40:43,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:40:43,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:40:43,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:40:43,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:40:43,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:40:43,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:40:43,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:40:43,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:40:43,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:40:43,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:40:43,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:40:43,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:40:43,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:40:43,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:40:43,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:40:43,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:40:43,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:40:43,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:40:43,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:40:43,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:40:43,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:40:43,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:40:43,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:40:43,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:40:43,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:40:43,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:40:43,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:40:43,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:40:43,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:40:43,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:40:43,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:40:43,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:40:43,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:40:43,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:40:43,732 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-22 15:40:43,777 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:40:43,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:40:43,779 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:40:43,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:40:43,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:40:43,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:40:43,782 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:40:43,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:40:43,782 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:40:43,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:40:43,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:40:43,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:40:43,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:40:43,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:40:43,785 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 15:40:43,785 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-22 15:40:43,785 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-22 15:40:43,786 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:40:43,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:40:43,786 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:40:43,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:40:43,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:40:43,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:40:43,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:40:43,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:40:43,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:40:43,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:40:43,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:40:43,789 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-22 15:40:43,789 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-22 15:40:43,789 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:40:43,789 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:40:43,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:40:43,790 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:40:43,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-22 15:40:43,790 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c7e4faaabab9b2f322684d2701654a5044e8a4a6ec20b8d467b524bec442165 [2021-11-22 15:40:44,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:40:44,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:40:44,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:40:44,211 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:40:44,212 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:40:44,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/combinations/gcd_2+newton_3_5.i [2021-11-22 15:40:44,289 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/data/cd1a2080a/7899e57c283f4db587f9fbc276f1344d/FLAG08238f55b [2021-11-22 15:40:44,831 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:40:44,836 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/sv-benchmarks/c/combinations/gcd_2+newton_3_5.i [2021-11-22 15:40:44,846 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/data/cd1a2080a/7899e57c283f4db587f9fbc276f1344d/FLAG08238f55b [2021-11-22 15:40:45,179 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/data/cd1a2080a/7899e57c283f4db587f9fbc276f1344d [2021-11-22 15:40:45,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:40:45,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:40:45,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:40:45,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:40:45,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:40:45,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:40:45" (1/1) ... [2021-11-22 15:40:45,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@314bfc61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:40:45, skipping insertion in model container [2021-11-22 15:40:45,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:40:45" (1/1) ... [2021-11-22 15:40:45,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:40:45,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:40:45,403 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_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/sv-benchmarks/c/combinations/gcd_2+newton_3_5.i[1226,1239] [2021-11-22 15:40:45,432 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_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/sv-benchmarks/c/combinations/gcd_2+newton_3_5.i[2862,2875] [2021-11-22 15:40:45,442 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:40:45,464 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:40:45,505 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_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/sv-benchmarks/c/combinations/gcd_2+newton_3_5.i[1226,1239] [2021-11-22 15:40:45,559 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_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/sv-benchmarks/c/combinations/gcd_2+newton_3_5.i[2862,2875] [2021-11-22 15:40:45,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:40:45,583 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:40:45,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:40:45 WrapperNode [2021-11-22 15:40:45,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:40:45,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:40:45,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:40:45,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:40:45,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:40:45" (1/1) ... [2021-11-22 15:40:45,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:40:45" (1/1) ... [2021-11-22 15:40:45,658 INFO L137 Inliner]: procedures = 28, calls = 18, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 95 [2021-11-22 15:40:45,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:40:45,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:40:45,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:40:45,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:40:45,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:40:45" (1/1) ... [2021-11-22 15:40:45,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:40:45" (1/1) ... [2021-11-22 15:40:45,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:40:45" (1/1) ... [2021-11-22 15:40:45,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:40:45" (1/1) ... [2021-11-22 15:40:45,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:40:45" (1/1) ... [2021-11-22 15:40:45,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:40:45" (1/1) ... [2021-11-22 15:40:45,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:40:45" (1/1) ... [2021-11-22 15:40:45,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:40:45,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:40:45,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:40:45,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:40:45,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:40:45" (1/1) ... [2021-11-22 15:40:45,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:40:45,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:40:45,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:40:45,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:40:45,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:40:45,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-22 15:40:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:40:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:40:45,948 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:40:45,950 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:41:01,439 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:41:01,445 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:41:01,446 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 15:41:01,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:41:01 BoogieIcfgContainer [2021-11-22 15:41:01,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:41:01,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:41:01,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:41:01,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:41:01,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:40:45" (1/3) ... [2021-11-22 15:41:01,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d257a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:41:01, skipping insertion in model container [2021-11-22 15:41:01,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:40:45" (2/3) ... [2021-11-22 15:41:01,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d257a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:41:01, skipping insertion in model container [2021-11-22 15:41:01,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:41:01" (3/3) ... [2021-11-22 15:41:01,457 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_3_5.i [2021-11-22 15:41:01,462 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:41:01,462 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-22 15:41:01,522 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:41:01,529 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 [2021-11-22 15:41:01,530 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-22 15:41:01,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:01,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 15:41:01,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:01,559 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:01,559 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:01,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:01,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1947301547, now seen corresponding path program 1 times [2021-11-22 15:41:01,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:41:01,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470059271] [2021-11-22 15:41:01,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:01,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:41:01,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:41:01,586 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:41:01,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-22 15:41:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:41:01,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:41:01,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:41:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:41:01,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:41:02,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:41:02,411 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:41:02,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470059271] [2021-11-22 15:41:02,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470059271] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:41:02,412 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:41:02,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-22 15:41:02,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770426366] [2021-11-22 15:41:02,415 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:41:02,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:41:02,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:41:02,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:41:02,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:41:02,450 INFO L87 Difference]: Start difference. First operand has 31 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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) [2021-11-22 15:41:02,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:41:02,763 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2021-11-22 15:41:02,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:41:02,766 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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) Word has length 11 [2021-11-22 15:41:02,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:41:02,775 INFO L225 Difference]: With dead ends: 73 [2021-11-22 15:41:02,775 INFO L226 Difference]: Without dead ends: 24 [2021-11-22 15:41:02,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:41:02,782 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 28 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:41:02,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 121 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:41:02,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-22 15:41:02,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-22 15:41:02,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 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) [2021-11-22 15:41:02,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-11-22 15:41:02,818 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 11 [2021-11-22 15:41:02,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:41:02,819 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-11-22 15:41:02,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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) [2021-11-22 15:41:02,819 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-11-22 15:41:02,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 15:41:02,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:02,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:02,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:41:03,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:41:03,026 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:03,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:03,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1364487322, now seen corresponding path program 1 times [2021-11-22 15:41:03,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:41:03,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293358877] [2021-11-22 15:41:03,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:03,028 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:41:03,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:41:03,032 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:41:03,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-22 15:41:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:41:03,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 15:41:03,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:41:04,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:41:04,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:41:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:41:05,074 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:41:05,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293358877] [2021-11-22 15:41:05,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293358877] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:41:05,075 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:41:05,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-11-22 15:41:05,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30236011] [2021-11-22 15:41:05,076 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:41:05,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 15:41:05,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:41:05,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 15:41:05,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-22 15:41:05,079 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:08,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:41:08,225 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2021-11-22 15:41:08,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-22 15:41:08,226 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-22 15:41:08,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:41:08,228 INFO L225 Difference]: With dead ends: 41 [2021-11-22 15:41:08,228 INFO L226 Difference]: Without dead ends: 27 [2021-11-22 15:41:08,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2021-11-22 15:41:08,231 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 41 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-22 15:41:08,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 150 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-22 15:41:08,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-22 15:41:08,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-22 15:41:08,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 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) [2021-11-22 15:41:08,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-11-22 15:41:08,239 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 12 [2021-11-22 15:41:08,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:41:08,240 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-11-22 15:41:08,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:41:08,240 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-11-22 15:41:08,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 15:41:08,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:08,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:08,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:41:08,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:41:08,446 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:08,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:08,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1277269317, now seen corresponding path program 1 times [2021-11-22 15:41:08,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:41:08,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552843414] [2021-11-22 15:41:08,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:08,447 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:41:08,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:41:08,449 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:41:08,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fa31a9a-c62d-4ec4-9f1c-d7a829710bbd/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process