./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt --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 66ce5a69168fe118e2caa0a99f2b1d5c3f1a2a1d ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:01:13,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:01:13,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:01:13,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:01:13,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:01:13,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:01:13,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:01:13,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:01:13,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:01:13,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:01:13,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:01:13,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:01:13,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:01:13,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:01:13,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:01:13,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:01:13,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:01:13,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:01:13,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:01:13,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:01:13,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:01:13,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:01:13,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:01:13,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:01:13,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:01:13,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:01:13,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:01:13,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:01:13,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:01:13,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:01:13,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:01:13,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:01:13,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:01:13,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:01:13,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:01:13,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:01:13,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:01:13,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:01:13,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:01:13,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:01:13,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:01:13,542 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:01:13,594 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:01:13,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:01:13,595 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:01:13,595 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:01:13,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:01:13,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:01:13,598 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:01:13,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:01:13,599 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:01:13,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:01:13,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:01:13,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:01:13,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:01:13,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:01:13,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:01:13,602 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:01:13,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:01:13,602 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:01:13,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:01:13,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:01:13,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:01:13,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:01:13,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:01:13,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:01:13,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:01:13,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:01:13,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:01:13,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:01:13,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:01:13,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:01:13,606 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_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66ce5a69168fe118e2caa0a99f2b1d5c3f1a2a1d [2021-10-13 00:01:13,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:01:13,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:01:13,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:01:13,933 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:01:13,935 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:01:13,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound50.c [2021-10-13 00:01:14,018 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/data/ba15cdd2b/b7ec3aaa9835462d9370348290bccfa5/FLAG3eee57f7a [2021-10-13 00:01:14,569 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:01:14,570 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound50.c [2021-10-13 00:01:14,584 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/data/ba15cdd2b/b7ec3aaa9835462d9370348290bccfa5/FLAG3eee57f7a [2021-10-13 00:01:14,921 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/data/ba15cdd2b/b7ec3aaa9835462d9370348290bccfa5 [2021-10-13 00:01:14,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:01:14,926 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:01:14,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:01:14,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:01:14,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:01:14,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:01:14" (1/1) ... [2021-10-13 00:01:14,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@330fcc74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:01:14, skipping insertion in model container [2021-10-13 00:01:14,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:01:14" (1/1) ... [2021-10-13 00:01:14,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:01:14,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:01:15,223 WARN L228 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_48a7f2ad-613c-4e34-8c51-db5b685a182c/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound50.c[525,538] [2021-10-13 00:01:15,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:01:15,247 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:01:15,260 WARN L228 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_48a7f2ad-613c-4e34-8c51-db5b685a182c/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound50.c[525,538] [2021-10-13 00:01:15,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:01:15,280 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:01:15,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:01:15 WrapperNode [2021-10-13 00:01:15,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:01:15,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:01:15,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:01:15,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:01:15,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:01:15" (1/1) ... [2021-10-13 00:01:15,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:01:15" (1/1) ... [2021-10-13 00:01:15,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:01:15,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:01:15,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:01:15,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:01:15,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:01:15" (1/1) ... [2021-10-13 00:01:15,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:01:15" (1/1) ... [2021-10-13 00:01:15,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:01:15" (1/1) ... [2021-10-13 00:01:15,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:01:15" (1/1) ... [2021-10-13 00:01:15,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:01:15" (1/1) ... [2021-10-13 00:01:15,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:01:15" (1/1) ... [2021-10-13 00:01:15,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:01:15" (1/1) ... [2021-10-13 00:01:15,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:01:15,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:01:15,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:01:15,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:01:15,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:01:15" (1/1) ... [2021-10-13 00:01:15,355 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:01:15,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:01:15,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:01:15,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:01:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:01:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:01:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:01:15,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:01:15,688 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:01:15,700 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-13 00:01:15,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:01:15 BoogieIcfgContainer [2021-10-13 00:01:15,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:01:15,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:01:15,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:01:15,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:01:15,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:01:14" (1/3) ... [2021-10-13 00:01:15,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31791b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:01:15, skipping insertion in model container [2021-10-13 00:01:15,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:01:15" (2/3) ... [2021-10-13 00:01:15,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31791b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:01:15, skipping insertion in model container [2021-10-13 00:01:15,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:01:15" (3/3) ... [2021-10-13 00:01:15,728 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_valuebound50.c [2021-10-13 00:01:15,734 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:01:15,749 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 00:01:15,829 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:01:15,853 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-13 00:01:15,853 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-13 00:01:15,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 16 states have (on average 1.5625) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:01:15,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:01:15,876 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:01:15,877 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:01:15,877 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:01:15,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:01:15,883 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-10-13 00:01:15,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:01:15,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219508724] [2021-10-13 00:01:15,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:01:15,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:01:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:01:16,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:01:16,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:01:16,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219508724] [2021-10-13 00:01:16,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219508724] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:01:16,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:01:16,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:01:16,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425576530] [2021-10-13 00:01:16,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:01:16,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:01:16,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:01:16,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:01:16,173 INFO L87 Difference]: Start difference. First operand has 19 states, 16 states have (on average 1.5625) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-10-13 00:01:16,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:01:16,192 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2021-10-13 00:01:16,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:01:16,194 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-10-13 00:01:16,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:01:16,203 INFO L225 Difference]: With dead ends: 35 [2021-10-13 00:01:16,203 INFO L226 Difference]: Without dead ends: 15 [2021-10-13 00:01:16,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:01:16,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-13 00:01:16,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-13 00:01:16,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:01:16,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-13 00:01:16,244 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2021-10-13 00:01:16,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:01:16,246 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-13 00:01:16,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-10-13 00:01:16,247 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-13 00:01:16,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:01:16,247 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:01:16,248 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:01:16,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:01:16,249 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:01:16,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:01:16,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-10-13 00:01:16,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:01:16,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209699856] [2021-10-13 00:01:16,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:01:16,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:01:16,297 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:01:16,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353281461] [2021-10-13 00:01:16,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:01:16,299 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:01:16,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:01:16,302 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:01:16,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:01:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:01:16,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:01:16,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:01:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:01:16,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:01:16,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209699856] [2021-10-13 00:01:16,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:01:16,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353281461] [2021-10-13 00:01:16,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353281461] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:01:16,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:01:16,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:01:16,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227068244] [2021-10-13 00:01:16,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:01:16,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:01:16,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:01:16,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:01:16,800 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2021-10-13 00:01:16,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:01:16,898 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-10-13 00:01:16,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:01:16,899 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 9 [2021-10-13 00:01:16,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:01:16,900 INFO L225 Difference]: With dead ends: 25 [2021-10-13 00:01:16,900 INFO L226 Difference]: Without dead ends: 19 [2021-10-13 00:01:16,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.7ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:01:16,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-13 00:01:16,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-10-13 00:01:16,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.125) internal successors, (18), 17 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) [2021-10-13 00:01:16,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-13 00:01:16,906 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2021-10-13 00:01:16,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:01:16,907 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-13 00:01:16,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2021-10-13 00:01:16,907 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-13 00:01:16,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 00:01:16,908 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:01:16,908 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:01:16,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:01:17,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:01:17,130 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:01:17,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:01:17,131 INFO L82 PathProgramCache]: Analyzing trace with hash 636965506, now seen corresponding path program 1 times [2021-10-13 00:01:17,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:01:17,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513748266] [2021-10-13 00:01:17,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:01:17,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:01:17,162 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:01:17,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1507081409] [2021-10-13 00:01:17,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:01:17,163 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:01:17,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:01:17,169 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:01:17,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:01:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:01:17,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:01:17,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:01:17,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:01:17,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:01:17,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513748266] [2021-10-13 00:01:17,399 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:01:17,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507081409] [2021-10-13 00:01:17,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507081409] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:01:17,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:01:17,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 00:01:17,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670184493] [2021-10-13 00:01:17,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:01:17,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:01:17,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:01:17,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:01:17,412 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-10-13 00:01:17,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:01:17,481 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-10-13 00:01:17,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:01:17,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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 [2021-10-13 00:01:17,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:01:17,487 INFO L225 Difference]: With dead ends: 28 [2021-10-13 00:01:17,488 INFO L226 Difference]: Without dead ends: 22 [2021-10-13 00:01:17,489 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 38.9ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:01:17,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-13 00:01:17,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2021-10-13 00:01:17,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 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) [2021-10-13 00:01:17,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-10-13 00:01:17,500 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2021-10-13 00:01:17,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:01:17,501 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-10-13 00:01:17,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-10-13 00:01:17,501 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-10-13 00:01:17,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 00:01:17,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:01:17,503 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:01:17,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:01:17,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-13 00:01:17,723 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:01:17,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:01:17,724 INFO L82 PathProgramCache]: Analyzing trace with hash 678815956, now seen corresponding path program 2 times [2021-10-13 00:01:17,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:01:17,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788746247] [2021-10-13 00:01:17,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:01:17,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:01:17,745 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:01:17,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413595206] [2021-10-13 00:01:17,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:01:17,746 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:01:17,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:01:17,754 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:01:17,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:01:17,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:01:17,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:01:17,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 00:01:17,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:01:18,242 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:01:18,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:01:18,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788746247] [2021-10-13 00:01:18,245 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:01:18,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413595206] [2021-10-13 00:01:18,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413595206] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:01:18,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:01:18,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:01:18,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943309895] [2021-10-13 00:01:18,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:01:18,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:01:18,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:01:18,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:01:18,250 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:01:18,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:01:18,392 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-10-13 00:01:18,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:01:18,392 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 00:01:18,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:01:18,393 INFO L225 Difference]: With dead ends: 31 [2021-10-13 00:01:18,393 INFO L226 Difference]: Without dead ends: 25 [2021-10-13 00:01:18,394 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 75.3ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:01:18,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-13 00:01:18,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-10-13 00:01:18,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 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) [2021-10-13 00:01:18,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-10-13 00:01:18,401 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 15 [2021-10-13 00:01:18,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:01:18,401 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-10-13 00:01:18,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:01:18,402 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-10-13 00:01:18,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:01:18,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:01:18,403 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:01:18,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:01:18,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:01:18,618 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:01:18,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:01:18,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1905056066, now seen corresponding path program 3 times [2021-10-13 00:01:18,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:01:18,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806223817] [2021-10-13 00:01:18,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:01:18,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:01:18,670 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:01:18,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559197566] [2021-10-13 00:01:18,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:01:18,671 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:01:18,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:01:18,682 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:01:18,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 00:01:18,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 00:01:18,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:01:18,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 00:01:18,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:01:19,391 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 00:01:19,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:01:19,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806223817] [2021-10-13 00:01:19,392 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:01:19,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559197566] [2021-10-13 00:01:19,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559197566] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:01:19,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:01:19,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 00:01:19,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345455668] [2021-10-13 00:01:19,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:01:19,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:01:19,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:01:19,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:01:19,395 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:01:29,595 WARN L207 SmtUtils]: Spent 8.12 s on a formula simplification. DAG size of input: 37 DAG size of output: 29 [2021-10-13 00:01:29,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:01:29,656 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-10-13 00:01:29,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:01:29,657 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 00:01:29,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:01:29,657 INFO L225 Difference]: With dead ends: 24 [2021-10-13 00:01:29,657 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:01:29,658 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8345.9ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:01:29,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:01:29,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:01:29,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:01:29,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:01:29,659 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-10-13 00:01:29,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:01:29,659 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:01:29,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:01:29,659 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:01:29,659 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:01:29,661 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:01:29,662 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:01:29,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-13 00:01:29,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:01:29,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 00:01:29,868 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:01:29,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:01:29,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:01:29,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:01:40,543 WARN L207 SmtUtils]: Spent 10.60 s on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2021-10-13 00:01:51,219 WARN L207 SmtUtils]: Spent 10.67 s on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2021-10-13 00:01:51,223 INFO L853 garLoopResultBuilder]: At program point L35-2(lines 35 44) the Hoare annotation is: (let ((.cse2 (<= 0 ULTIMATE.start_main_~z~0)) (.cse3 (<= ULTIMATE.start_main_~z~0 50))) (or (and (or (= ULTIMATE.start_main_~y~0 0) (let ((.cse1 (+ (- 1) ULTIMATE.start_main_~x~0))) (and (let ((.cse0 (div .cse1 ULTIMATE.start_main_~z~0))) (= (+ (* .cse0 ULTIMATE.start_main_~z~0) 1) (+ .cse0 (* (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~z~0)))) (not (= ULTIMATE.start_main_~z~0 0)) (= (mod .cse1 ULTIMATE.start_main_~z~0) 0)))) (= (+ ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1)) .cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3) (and .cse2 (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~x~0 1) .cse3))) [2021-10-13 00:01:51,223 INFO L857 garLoopResultBuilder]: For program point L35-3(lines 35 44) no Hoare annotation was computed. [2021-10-13 00:01:51,223 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:01:51,223 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:01:51,224 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 38 39) the Hoare annotation is: (let ((.cse2 (<= 0 ULTIMATE.start_main_~z~0)) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (<= ULTIMATE.start_main_~z~0 50))) (or (and (or (= ULTIMATE.start_main_~y~0 0) (let ((.cse1 (+ (- 1) ULTIMATE.start_main_~x~0))) (and (let ((.cse0 (div .cse1 ULTIMATE.start_main_~z~0))) (= (+ (* .cse0 ULTIMATE.start_main_~z~0) 1) (+ .cse0 (* (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~z~0)))) (not (= ULTIMATE.start_main_~z~0 0)) (= (mod .cse1 ULTIMATE.start_main_~z~0) 0)))) (= (+ ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1)) .cse2 .cse3 .cse4) (and .cse2 .cse3 (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~x~0 1) .cse4))) [2021-10-13 00:01:51,224 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:01:51,224 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-10-13 00:01:51,224 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2021-10-13 00:01:51,225 INFO L860 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: true [2021-10-13 00:01:51,225 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 00:01:51,225 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 00:01:51,225 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 00:01:51,225 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:01:51,226 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:01:51,226 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:01:51,226 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-13 00:01:51,226 INFO L857 garLoopResultBuilder]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-10-13 00:01:51,226 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 00:01:51,227 INFO L860 garLoopResultBuilder]: At program point L46(lines 23 47) the Hoare annotation is: true [2021-10-13 00:01:51,230 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:01:51,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:01:51 BoogieIcfgContainer [2021-10-13 00:01:51,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:01:51,258 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:01:51,258 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:01:51,258 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:01:51,259 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:01:15" (3/4) ... [2021-10-13 00:01:51,262 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:01:51,272 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-13 00:01:51,272 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:01:51,272 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:01:51,273 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:01:51,308 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:01:51,308 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:01:51,309 INFO L168 Benchmark]: Toolchain (without parser) took 36382.45 ms. Allocated memory was 119.5 MB in the beginning and 146.8 MB in the end (delta: 27.3 MB). Free memory was 92.9 MB in the beginning and 69.6 MB in the end (delta: 23.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:01:51,310 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 119.5 MB. Free memory is still 74.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:01:51,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.30 ms. Allocated memory is still 119.5 MB. Free memory was 92.5 MB in the beginning and 92.3 MB in the end (delta: 272.3 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:01:51,311 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.52 ms. Allocated memory is still 119.5 MB. Free memory was 92.3 MB in the beginning and 90.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:01:51,311 INFO L168 Benchmark]: Boogie Preprocessor took 22.99 ms. Allocated memory is still 119.5 MB. Free memory was 90.9 MB in the beginning and 89.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:01:51,312 INFO L168 Benchmark]: RCFGBuilder took 361.22 ms. Allocated memory is still 119.5 MB. Free memory was 89.8 MB in the beginning and 80.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:01:51,313 INFO L168 Benchmark]: TraceAbstraction took 35552.88 ms. Allocated memory was 119.5 MB in the beginning and 146.8 MB in the end (delta: 27.3 MB). Free memory was 79.7 MB in the beginning and 71.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:01:51,313 INFO L168 Benchmark]: Witness Printer took 50.13 ms. Allocated memory is still 146.8 MB. Free memory was 71.7 MB in the beginning and 69.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:01:51,316 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 119.5 MB. Free memory is still 74.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.30 ms. Allocated memory is still 119.5 MB. Free memory was 92.5 MB in the beginning and 92.3 MB in the end (delta: 272.3 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.52 ms. Allocated memory is still 119.5 MB. Free memory was 92.3 MB in the beginning and 90.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.99 ms. Allocated memory is still 119.5 MB. Free memory was 90.9 MB in the beginning and 89.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 361.22 ms. Allocated memory is still 119.5 MB. Free memory was 89.8 MB in the beginning and 80.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 35552.88 ms. Allocated memory was 119.5 MB in the beginning and 146.8 MB in the end (delta: 27.3 MB). Free memory was 79.7 MB in the beginning and 71.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. * Witness Printer took 50.13 ms. Allocated memory is still 146.8 MB. Free memory was 71.7 MB in the beginning and 69.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 35403.0ms, OverallIterations: 5, TraceHistogramMax: 4, EmptinessCheckTime: 13.2ms, AutomataDifference: 10653.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 21359.0ms, InitialAbstractionConstructionTime: 12.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 58 SDtfs, 35 SDslu, 111 SDs, 0 SdLazy, 116 SolverSat, 35 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2238.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 8561.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=4, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 42.0ms AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 14 NumberOfFragments, 149 HoareAnnotationTreeSize, 4 FomulaSimplifications, 315 FormulaSimplificationTreeSizeReduction, 73.4ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 120 FormulaSimplificationTreeSizeReductionInter, 21277.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 50.1ms SsaConstructionTime, 181.8ms SatisfiabilityAnalysisTime, 1622.8ms InterpolantComputationTime, 63 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 287 SizeOfPredicates, 23 NumberOfNonLiveVariables, 308 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 14/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((y == 0 || (((-1 + x) / z * z + 1 == (-1 + x) / z + y / z * z && !(z == 0)) && (-1 + x) % z == 0)) && x + z * y == z * x + 1) && 0 <= z) && 1 == cond) && z <= 50) || (((0 <= z && y == 1) && x == 1) && z <= 50) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((y == 0 || (((-1 + x) / z * z + 1 == (-1 + x) / z + y / z * z && !(z == 0)) && (-1 + x) % z == 0)) && x + z * y == z * x + 1) && 0 <= z) && 1 == cond) && z <= 50) || ((((0 <= z && 1 == cond) && y == 1) && x == 1) && z <= 50) RESULT: Ultimate proved your program to be correct! [2021-10-13 00:01:51,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a7f2ad-613c-4e34-8c51-db5b685a182c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...