./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD --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 30423d130febadd361f3e4a853592861e7b12a17e365ee39eab7e3a86989589e ............................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:27:32,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:27:32,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:27:32,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:27:32,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:27:32,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:27:32,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:27:32,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:27:32,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:27:32,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:27:32,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:27:32,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:27:32,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:27:32,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:27:32,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:27:32,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:27:32,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:27:32,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:27:32,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:27:32,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:27:32,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:27:32,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:27:32,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:27:32,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:27:32,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:27:32,372 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:27:32,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:27:32,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:27:32,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:27:32,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:27:32,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:27:32,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:27:32,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:27:32,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:27:32,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:27:32,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:27:32,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:27:32,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:27:32,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:27:32,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:27:32,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:27:32,392 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:27:32,454 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:27:32,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:27:32,456 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:27:32,456 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:27:32,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:27:32,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:27:32,467 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:27:32,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:27:32,468 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:27:32,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:27:32,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:27:32,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:27:32,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:27:32,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:27:32,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:27:32,471 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:27:32,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:27:32,472 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:27:32,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:27:32,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:27:32,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:27:32,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:27:32,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:27:32,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:27:32,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:27:32,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:27:32,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:27:32,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:27:32,475 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:27:32,477 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:27:32,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:27:32,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:27:32,479 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_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30423d130febadd361f3e4a853592861e7b12a17e365ee39eab7e3a86989589e [2021-10-28 23:27:32,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:27:32,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:27:32,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:27:32,938 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:27:32,939 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:27:32,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i [2021-10-28 23:27:33,021 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/data/7f6d9eb1c/97c1280b4b924a57a3268df629cfc228/FLAG6fcb31975 [2021-10-28 23:27:33,703 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:27:33,703 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i [2021-10-28 23:27:33,718 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/data/7f6d9eb1c/97c1280b4b924a57a3268df629cfc228/FLAG6fcb31975 [2021-10-28 23:27:34,026 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/data/7f6d9eb1c/97c1280b4b924a57a3268df629cfc228 [2021-10-28 23:27:34,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:27:34,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:27:34,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:27:34,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:27:34,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:27:34,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:27:34" (1/1) ... [2021-10-28 23:27:34,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc32eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:34, skipping insertion in model container [2021-10-28 23:27:34,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:27:34" (1/1) ... [2021-10-28 23:27:34,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:27:34,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:27:34,266 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_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i[872,885] [2021-10-28 23:27:34,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:27:34,309 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:27:34,338 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_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i[872,885] [2021-10-28 23:27:34,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:27:34,359 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:27:34,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:34 WrapperNode [2021-10-28 23:27:34,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:27:34,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:27:34,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:27:34,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:27:34,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:34" (1/1) ... [2021-10-28 23:27:34,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:34" (1/1) ... [2021-10-28 23:27:34,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:27:34,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:27:34,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:27:34,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:27:34,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:34" (1/1) ... [2021-10-28 23:27:34,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:34" (1/1) ... [2021-10-28 23:27:34,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:34" (1/1) ... [2021-10-28 23:27:34,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:34" (1/1) ... [2021-10-28 23:27:34,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:34" (1/1) ... [2021-10-28 23:27:34,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:34" (1/1) ... [2021-10-28 23:27:34,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:34" (1/1) ... [2021-10-28 23:27:34,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:27:34,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:27:34,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:27:34,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:27:34,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:34" (1/1) ... [2021-10-28 23:27:34,437 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:27:34,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:27:34,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:27:34,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:27:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:27:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:27:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:27:34,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:27:34,794 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:27:34,795 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 23:27:34,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:27:34 BoogieIcfgContainer [2021-10-28 23:27:34,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:27:34,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:27:34,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:27:34,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:27:34,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:27:34" (1/3) ... [2021-10-28 23:27:34,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2437c117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:27:34, skipping insertion in model container [2021-10-28 23:27:34,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:34" (2/3) ... [2021-10-28 23:27:34,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2437c117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:27:34, skipping insertion in model container [2021-10-28 23:27:34,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:27:34" (3/3) ... [2021-10-28 23:27:34,808 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark52_polynomial.i [2021-10-28 23:27:34,815 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:27:34,815 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:27:34,878 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:27:34,886 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 [2021-10-28 23:27:34,887 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:27:34,904 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 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) [2021-10-28 23:27:34,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 23:27:34,910 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:27:34,911 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:27:34,912 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:27:34,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:27:34,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1807089479, now seen corresponding path program 1 times [2021-10-28 23:27:34,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:27:34,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818349579] [2021-10-28 23:27:34,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:27:34,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:27:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:35,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:27:35,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:27:35,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818349579] [2021-10-28 23:27:35,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818349579] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:27:35,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:27:35,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:27:35,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308091938] [2021-10-28 23:27:35,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:27:35,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:27:35,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:27:35,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:27:35,166 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 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) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-28 23:27:35,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:27:35,190 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-10-28 23:27:35,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:27:35,198 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-28 23:27:35,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:27:35,223 INFO L225 Difference]: With dead ends: 20 [2021-10-28 23:27:35,223 INFO L226 Difference]: Without dead ends: 8 [2021-10-28 23:27:35,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:27:35,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-28 23:27:35,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-28 23:27:35,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:27:35,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-28 23:27:35,263 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2021-10-28 23:27:35,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:27:35,263 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-28 23:27:35,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-28 23:27:35,264 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-28 23:27:35,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 23:27:35,265 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:27:35,265 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:27:35,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:27:35,266 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:27:35,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:27:35,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1806970315, now seen corresponding path program 1 times [2021-10-28 23:27:35,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:27:35,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520300085] [2021-10-28 23:27:35,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:27:35,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:27:35,285 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:27:35,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1342236866] [2021-10-28 23:27:35,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:27:35,286 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:27:35,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:27:35,289 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:27:35,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:27:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:35,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:27:35,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:27:35,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:27:35,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:27:35,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520300085] [2021-10-28 23:27:35,632 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:27:35,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342236866] [2021-10-28 23:27:35,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342236866] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:27:35,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:27:35,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:27:35,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812339906] [2021-10-28 23:27:35,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:27:35,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:27:35,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:27:35,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:27:35,656 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-10-28 23:27:35,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:27:35,680 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-10-28 23:27:35,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:27:35,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-28 23:27:35,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:27:35,682 INFO L225 Difference]: With dead ends: 13 [2021-10-28 23:27:35,682 INFO L226 Difference]: Without dead ends: 9 [2021-10-28 23:27:35,685 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:27:35,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-28 23:27:35,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-28 23:27:35,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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) [2021-10-28 23:27:35,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-28 23:27:35,690 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-10-28 23:27:35,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:27:35,691 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-28 23:27:35,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-10-28 23:27:35,692 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-28 23:27:35,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 23:27:35,694 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:27:35,695 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:27:35,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:27:35,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-28 23:27:35,922 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:27:35,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:27:35,923 INFO L85 PathProgramCache]: Analyzing trace with hash 183170323, now seen corresponding path program 1 times [2021-10-28 23:27:35,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:27:35,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489628318] [2021-10-28 23:27:35,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:27:35,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:27:35,982 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:27:35,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2056979010] [2021-10-28 23:27:35,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:27:35,985 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:27:35,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:27:35,988 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:27:36,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:27:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:36,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:27:36,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:27:36,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:27:36,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:27:36,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489628318] [2021-10-28 23:27:36,453 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:27:36,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056979010] [2021-10-28 23:27:36,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056979010] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:27:36,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:27:36,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 23:27:36,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371669353] [2021-10-28 23:27:36,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:27:36,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:27:36,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:27:36,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:27:36,461 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:27:36,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:27:36,534 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-10-28 23:27:36,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:27:36,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-28 23:27:36,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:27:36,535 INFO L225 Difference]: With dead ends: 9 [2021-10-28 23:27:36,535 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:27:36,536 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:27:36,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:27:36,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:27:36,536 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) [2021-10-28 23:27:36,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:27:36,537 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-10-28 23:27:36,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:27:36,537 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:27:36,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:27:36,538 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:27:36,538 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:27:36,542 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:27:36,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:27:36,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:27:36,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 23:27:36,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:27:36,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:27:36,829 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 23:27:36,830 INFO L857 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-10-28 23:27:36,831 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-10-28 23:27:36,831 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 23:27:36,832 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 23:27:36,832 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 23:27:36,833 INFO L860 garLoopResultBuilder]: At program point L26(lines 19 27) the Hoare annotation is: true [2021-10-28 23:27:36,833 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-10-28 23:27:36,834 INFO L853 garLoopResultBuilder]: At program point L22-2(lines 22 24) the Hoare annotation is: (or (and (< 0 (+ ULTIMATE.start_main_~i~0 10)) (< ULTIMATE.start_main_~i~0 10)) (and (< ULTIMATE.start_main_~i~0 11) (< 0 (+ ULTIMATE.start_main_~i~0 9)))) [2021-10-28 23:27:36,834 INFO L857 garLoopResultBuilder]: For program point L22-3(lines 22 24) no Hoare annotation was computed. [2021-10-28 23:27:36,834 INFO L857 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-28 23:27:36,835 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-10-28 23:27:36,839 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-28 23:27:36,844 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:27:36,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:27:36 BoogieIcfgContainer [2021-10-28 23:27:36,866 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:27:36,867 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:27:36,868 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:27:36,868 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:27:36,869 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:27:34" (3/4) ... [2021-10-28 23:27:36,872 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:27:36,889 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-28 23:27:36,890 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:27:36,890 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:27:36,890 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:27:36,955 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:27:36,956 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:27:36,959 INFO L168 Benchmark]: Toolchain (without parser) took 2924.95 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 53.2 MB in the beginning and 72.1 MB in the end (delta: -19.0 MB). Peak memory consumption was 1.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:27:36,959 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 94.4 MB. Free memory is still 69.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:27:36,961 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.95 ms. Allocated memory is still 94.4 MB. Free memory was 53.0 MB in the beginning and 69.6 MB in the end (delta: -16.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:27:36,964 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.15 ms. Allocated memory is still 94.4 MB. Free memory was 69.6 MB in the beginning and 68.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:27:36,965 INFO L168 Benchmark]: Boogie Preprocessor took 24.28 ms. Allocated memory is still 94.4 MB. Free memory was 68.0 MB in the beginning and 67.1 MB in the end (delta: 900.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:27:36,966 INFO L168 Benchmark]: RCFGBuilder took 372.74 ms. Allocated memory is still 94.4 MB. Free memory was 67.1 MB in the beginning and 58.1 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:27:36,967 INFO L168 Benchmark]: TraceAbstraction took 2066.34 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 57.6 MB in the beginning and 74.2 MB in the end (delta: -16.6 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:27:36,972 INFO L168 Benchmark]: Witness Printer took 89.21 ms. Allocated memory is still 113.2 MB. Free memory was 74.2 MB in the beginning and 72.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:27:36,975 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 94.4 MB. Free memory is still 69.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 323.95 ms. Allocated memory is still 94.4 MB. Free memory was 53.0 MB in the beginning and 69.6 MB in the end (delta: -16.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.15 ms. Allocated memory is still 94.4 MB. Free memory was 69.6 MB in the beginning and 68.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.28 ms. Allocated memory is still 94.4 MB. Free memory was 68.0 MB in the beginning and 67.1 MB in the end (delta: 900.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 372.74 ms. Allocated memory is still 94.4 MB. Free memory was 67.1 MB in the beginning and 58.1 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2066.34 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 57.6 MB in the beginning and 74.2 MB in the end (delta: -16.6 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Witness Printer took 89.21 ms. Allocated memory is still 113.2 MB. Free memory was 74.2 MB in the beginning and 72.1 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: 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, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 3 SDslu, 8 SDs, 0 SdLazy, 21 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 11, 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: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 20 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 58 SizeOfPredicates, 3 NumberOfNonLiveVariables, 81 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 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 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (0 < i + 10 && i < 10) || (i < 11 && 0 < i + 9) RESULT: Ultimate proved your program to be correct! [2021-10-28 23:27:37,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d5cf6a-2521-4bd8-84dd-0417ea8de5e5/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...