./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU --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 4751d3eb3f8125549e47ad071da84be7a54e1805eb31936796833555d65c49e8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:45:37,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:45:37,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:45:37,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:45:37,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:45:37,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:45:37,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:45:37,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:45:37,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:45:37,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:45:37,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:45:37,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:45:37,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:45:37,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:45:37,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:45:37,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:45:37,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:45:37,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:45:37,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:45:37,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:45:37,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:45:37,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:45:37,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:45:37,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:45:37,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:45:37,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:45:37,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:45:37,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:45:37,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:45:37,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:45:37,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:45:37,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:45:37,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:45:37,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:45:37,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:45:37,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:45:37,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:45:37,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:45:37,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:45:37,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:45:37,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:45:37,349 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:45:37,391 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:45:37,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:45:37,392 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:45:37,392 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:45:37,394 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:45:37,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:45:37,394 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:45:37,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:45:37,395 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:45:37,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:45:37,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:45:37,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:45:37,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:45:37,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:45:37,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:45:37,397 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:45:37,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:45:37,397 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:45:37,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:45:37,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:45:37,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:45:37,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:45:37,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:45:37,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:45:37,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:45:37,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:45:37,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:45:37,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:45:37,400 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:45:37,400 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:45:37,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:45:37,400 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:45:37,401 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_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4751d3eb3f8125549e47ad071da84be7a54e1805eb31936796833555d65c49e8 [2021-11-02 22:45:37,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:45:37,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:45:37,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:45:37,707 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:45:37,708 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:45:37,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound5.c [2021-11-02 22:45:37,772 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/data/d409554ff/c0d8fd9cad1f4e108f0d91d7e0c20e03/FLAG79f44324d [2021-11-02 22:45:38,178 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:45:38,179 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound5.c [2021-11-02 22:45:38,184 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/data/d409554ff/c0d8fd9cad1f4e108f0d91d7e0c20e03/FLAG79f44324d [2021-11-02 22:45:38,582 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/data/d409554ff/c0d8fd9cad1f4e108f0d91d7e0c20e03 [2021-11-02 22:45:38,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:45:38,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:45:38,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:45:38,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:45:38,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:45:38,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:45:38" (1/1) ... [2021-11-02 22:45:38,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70184cf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:45:38, skipping insertion in model container [2021-11-02 22:45:38,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:45:38" (1/1) ... [2021-11-02 22:45:38,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:45:38,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:45:38,776 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_de2a747f-0fa4-4078-8e88-a9f815bef531/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound5.c[555,568] [2021-11-02 22:45:38,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:45:38,806 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:45:38,815 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_de2a747f-0fa4-4078-8e88-a9f815bef531/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound5.c[555,568] [2021-11-02 22:45:38,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:45:38,832 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:45:38,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:45:38 WrapperNode [2021-11-02 22:45:38,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:45:38,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:45:38,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:45:38,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:45:38,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:45:38" (1/1) ... [2021-11-02 22:45:38,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:45:38" (1/1) ... [2021-11-02 22:45:38,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:45:38,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:45:38,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:45:38,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:45:38,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:45:38" (1/1) ... [2021-11-02 22:45:38,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:45:38" (1/1) ... [2021-11-02 22:45:38,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:45:38" (1/1) ... [2021-11-02 22:45:38,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:45:38" (1/1) ... [2021-11-02 22:45:38,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:45:38" (1/1) ... [2021-11-02 22:45:38,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:45:38" (1/1) ... [2021-11-02 22:45:38,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:45:38" (1/1) ... [2021-11-02 22:45:38,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:45:38,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:45:38,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:45:38,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:45:38,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:45:38" (1/1) ... [2021-11-02 22:45:38,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:45:38,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:45:38,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:45:38,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:45:38,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:45:38,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:45:38,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:45:38,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:45:39,165 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:45:39,168 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-02 22:45:39,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:45:39 BoogieIcfgContainer [2021-11-02 22:45:39,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:45:39,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:45:39,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:45:39,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:45:39,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:45:38" (1/3) ... [2021-11-02 22:45:39,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1671c777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:45:39, skipping insertion in model container [2021-11-02 22:45:39,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:45:38" (2/3) ... [2021-11-02 22:45:39,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1671c777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:45:39, skipping insertion in model container [2021-11-02 22:45:39,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:45:39" (3/3) ... [2021-11-02 22:45:39,180 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_unwindbound5.c [2021-11-02 22:45:39,185 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:45:39,185 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-02 22:45:39,234 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:45:39,241 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:45:39,241 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-02 22:45:39,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:39,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-02 22:45:39,260 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:39,261 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-02 22:45:39,261 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:45:39,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:39,267 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-11-02 22:45:39,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:39,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264664585] [2021-11-02 22:45:39,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:39,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:39,375 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:45:39,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514919198] [2021-11-02 22:45:39,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:39,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:45:39,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:45:39,381 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:45:39,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:45:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:39,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:45:39,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:45:39,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:45:39,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:39,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264664585] [2021-11-02 22:45:39,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:45:39,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514919198] [2021-11-02 22:45:39,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514919198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:45:39,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:45:39,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:45:39,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231397303] [2021-11-02 22:45:39,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:45:39,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:39,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:45:39,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:45:39,634 INFO L87 Difference]: Start difference. First operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:39,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:39,748 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2021-11-02 22:45:39,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:45:39,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-02 22:45:39,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:39,766 INFO L225 Difference]: With dead ends: 39 [2021-11-02 22:45:39,766 INFO L226 Difference]: Without dead ends: 21 [2021-11-02 22:45:39,769 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:45:39,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-02 22:45:39,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2021-11-02 22:45:39,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:39,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-11-02 22:45:39,803 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 6 [2021-11-02 22:45:39,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:39,803 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-11-02 22:45:39,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:39,804 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-11-02 22:45:39,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 22:45:39,804 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:39,805 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:45:39,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:45:40,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-02 22:45:40,034 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:45:40,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:40,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1806862075, now seen corresponding path program 1 times [2021-11-02 22:45:40,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:40,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437377628] [2021-11-02 22:45:40,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:40,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:40,052 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:45:40,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29744263] [2021-11-02 22:45:40,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:40,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:45:40,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:45:40,055 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:45:40,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:45:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:40,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:45:40,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:45:40,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:45:40,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:40,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437377628] [2021-11-02 22:45:40,168 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:45:40,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29744263] [2021-11-02 22:45:40,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29744263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:45:40,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:45:40,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:45:40,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711826961] [2021-11-02 22:45:40,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:45:40,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:40,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:45:40,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:45:40,172 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.75) 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) [2021-11-02 22:45:40,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:40,189 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-02 22:45:40,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:45:40,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) 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 [2021-11-02 22:45:40,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:40,191 INFO L225 Difference]: With dead ends: 19 [2021-11-02 22:45:40,191 INFO L226 Difference]: Without dead ends: 15 [2021-11-02 22:45:40,192 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:45:40,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-02 22:45:40,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-02 22:45:40,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:40,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-11-02 22:45:40,195 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2021-11-02 22:45:40,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:40,196 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-11-02 22:45:40,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) 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) [2021-11-02 22:45:40,196 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-11-02 22:45:40,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 22:45:40,197 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:40,197 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:45:40,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:45:40,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-02 22:45:40,418 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:45:40,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:40,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1274494228, now seen corresponding path program 1 times [2021-11-02 22:45:40,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:40,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991544376] [2021-11-02 22:45:40,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:40,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:40,447 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:45:40,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305279661] [2021-11-02 22:45:40,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:40,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:45:40,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:45:40,448 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:45:40,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:45:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:45:40,497 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:45:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:45:40,527 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:45:40,528 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-02 22:45:40,529 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:45:40,531 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:45:40,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:45:40,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:45:40,760 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-02 22:45:40,763 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 22:45:40,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 10:45:40 BoogieIcfgContainer [2021-11-02 22:45:40,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 22:45:40,788 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:45:40,788 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:45:40,789 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:45:40,789 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:45:39" (3/4) ... [2021-11-02 22:45:40,791 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-02 22:45:40,828 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 22:45:40,829 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:45:40,830 INFO L168 Benchmark]: Toolchain (without parser) took 2244.12 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 69.8 MB in the beginning and 80.2 MB in the end (delta: -10.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2021-11-02 22:45:40,831 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 102.8 MB. Free memory is still 56.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:45:40,831 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.78 ms. Allocated memory is still 102.8 MB. Free memory was 69.6 MB in the beginning and 78.3 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 22:45:40,832 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.12 ms. Allocated memory is still 102.8 MB. Free memory was 78.3 MB in the beginning and 77.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:45:40,833 INFO L168 Benchmark]: Boogie Preprocessor took 18.85 ms. Allocated memory is still 102.8 MB. Free memory was 77.0 MB in the beginning and 75.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:45:40,833 INFO L168 Benchmark]: RCFGBuilder took 284.07 ms. Allocated memory is still 102.8 MB. Free memory was 75.9 MB in the beginning and 66.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:45:40,834 INFO L168 Benchmark]: TraceAbstraction took 1616.18 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 65.8 MB in the beginning and 82.3 MB in the end (delta: -16.5 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2021-11-02 22:45:40,835 INFO L168 Benchmark]: Witness Printer took 40.49 ms. Allocated memory is still 123.7 MB. Free memory was 82.3 MB in the beginning and 80.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:45:40,839 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 102.8 MB. Free memory is still 56.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 244.78 ms. Allocated memory is still 102.8 MB. Free memory was 69.6 MB in the beginning and 78.3 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.12 ms. Allocated memory is still 102.8 MB. Free memory was 78.3 MB in the beginning and 77.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.85 ms. Allocated memory is still 102.8 MB. Free memory was 77.0 MB in the beginning and 75.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 284.07 ms. Allocated memory is still 102.8 MB. Free memory was 75.9 MB in the beginning and 66.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1616.18 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 65.8 MB in the beginning and 82.3 MB in the end (delta: -16.5 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * Witness Printer took 40.49 ms. Allocated memory is still 123.7 MB. Free memory was 82.3 MB in the beginning and 80.2 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 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] unsigned int z, k; [L25] long long x, y, c; [L26] z = __VERIFIER_nondet_uint() [L27] k = __VERIFIER_nondet_uint() [L29] x = 1 [L30] y = z [L31] c = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<5 [L16] COND FALSE !(!(cond)) VAL [counter=1] [L36] COND TRUE !(c < k) VAL [counter=1] [L45] x = x * (z - 1) [L16] COND TRUE !(cond) VAL [counter=1] [L18] reach_error() VAL [counter=1] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 8 SDslu, 42 SDs, 0 SdLazy, 24 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 35 SizeOfPredicates, 4 NumberOfNonLiveVariables, 112 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-02 22:45:40,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2a747f-0fa4-4078-8e88-a9f815bef531/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE