./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound1.c --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_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg --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 4f9eb6f5ed10e87bb24b60ecc008ae0f7d927414b72cef44f169022f555bf831 ........................................................................................................................................................................................................................................................................................................................................................................................................................ 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 08:38:41,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:38:41,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:38:41,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:38:41,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:38:41,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:38:41,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:38:41,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:38:41,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:38:41,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:38:41,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:38:41,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:38:41,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:38:41,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:38:41,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:38:41,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:38:41,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:38:41,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:38:41,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:38:41,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:38:41,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:38:41,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:38:41,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:38:41,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:38:41,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:38:41,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:38:41,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:38:41,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:38:41,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:38:41,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:38:41,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:38:41,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:38:41,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:38:41,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:38:41,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:38:41,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:38:41,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:38:41,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:38:41,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:38:41,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:38:41,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:38:41,383 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 08:38:41,444 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:38:41,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:38:41,445 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:38:41,445 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:38:41,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:38:41,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:38:41,453 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:38:41,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:38:41,454 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:38:41,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:38:41,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:38:41,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:38:41,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:38:41,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:38:41,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:38:41,456 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:38:41,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:38:41,457 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:38:41,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:38:41,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:38:41,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:38:41,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:38:41,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:38:41,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:38:41,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:38:41,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:38:41,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:38:41,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:38:41,460 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:38:41,468 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:38:41,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:38:41,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:38:41,469 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_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f9eb6f5ed10e87bb24b60ecc008ae0f7d927414b72cef44f169022f555bf831 [2021-10-28 08:38:41,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:38:41,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:38:41,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:38:41,747 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:38:41,748 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:38:41,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound1.c [2021-10-28 08:38:41,822 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/data/709225f1e/a6f5798ef5644fe38fbbd2b721edbc7d/FLAGe6066221a [2021-10-28 08:38:42,268 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:38:42,268 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound1.c [2021-10-28 08:38:42,277 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/data/709225f1e/a6f5798ef5644fe38fbbd2b721edbc7d/FLAGe6066221a [2021-10-28 08:38:42,646 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/data/709225f1e/a6f5798ef5644fe38fbbd2b721edbc7d [2021-10-28 08:38:42,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:38:42,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:38:42,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:38:42,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:38:42,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:38:42,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:38:42" (1/1) ... [2021-10-28 08:38:42,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47bc0493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:42, skipping insertion in model container [2021-10-28 08:38:42,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:38:42" (1/1) ... [2021-10-28 08:38:42,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:38:42,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:38:42,833 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_9049ec21-1e05-48e3-b9a9-024d8e918ca5/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound1.c[525,538] [2021-10-28 08:38:42,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:38:42,854 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:38:42,866 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_9049ec21-1e05-48e3-b9a9-024d8e918ca5/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound1.c[525,538] [2021-10-28 08:38:42,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:38:42,883 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:38:42,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:42 WrapperNode [2021-10-28 08:38:42,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:38:42,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:38:42,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:38:42,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:38:42,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:42" (1/1) ... [2021-10-28 08:38:42,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:42" (1/1) ... [2021-10-28 08:38:42,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:38:42,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:38:42,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:38:42,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:38:42,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:42" (1/1) ... [2021-10-28 08:38:42,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:42" (1/1) ... [2021-10-28 08:38:42,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:42" (1/1) ... [2021-10-28 08:38:42,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:42" (1/1) ... [2021-10-28 08:38:42,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:42" (1/1) ... [2021-10-28 08:38:42,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:42" (1/1) ... [2021-10-28 08:38:42,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:42" (1/1) ... [2021-10-28 08:38:42,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:38:42,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:38:42,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:38:42,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:38:42,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:42" (1/1) ... [2021-10-28 08:38:42,949 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:38:42,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:38:42,978 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:38:43,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:38:43,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:38:43,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:38:43,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:38:43,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:38:43,245 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:38:43,245 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-28 08:38:43,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:38:43 BoogieIcfgContainer [2021-10-28 08:38:43,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:38:43,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:38:43,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:38:43,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:38:43,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:38:42" (1/3) ... [2021-10-28 08:38:43,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb08a27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:38:43, skipping insertion in model container [2021-10-28 08:38:43,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:38:42" (2/3) ... [2021-10-28 08:38:43,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb08a27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:38:43, skipping insertion in model container [2021-10-28 08:38:43,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:38:43" (3/3) ... [2021-10-28 08:38:43,265 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_unwindbound1.c [2021-10-28 08:38:43,271 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:38:43,271 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-28 08:38:43,314 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:38:43,321 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 08:38:43,321 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-28 08:38:43,337 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) [2021-10-28 08:38:43,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 08:38:43,342 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:38:43,343 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 08:38:43,344 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:38:43,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:38:43,350 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-28 08:38:43,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:38:43,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524652804] [2021-10-28 08:38:43,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:38:43,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:38:43,506 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:38:43,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1269776419] [2021-10-28 08:38:43,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:38:43,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:38:43,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:38:43,511 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:38:43,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 08:38:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:43,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 08:38:43,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:38:43,806 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 08:38:43,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:38:43,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524652804] [2021-10-28 08:38:43,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:38:43,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269776419] [2021-10-28 08:38:43,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269776419] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:38:43,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:38:43,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:38:43,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265694210] [2021-10-28 08:38:43,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:38:43,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:38:43,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:38:43,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:38:43,832 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) [2021-10-28 08:38:43,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:38:43,905 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2021-10-28 08:38:43,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:38:43,908 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 [2021-10-28 08:38:43,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:38:43,919 INFO L225 Difference]: With dead ends: 44 [2021-10-28 08:38:43,920 INFO L226 Difference]: Without dead ends: 19 [2021-10-28 08:38:43,923 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 [2021-10-28 08:38:43,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-28 08:38:43,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2021-10-28 08:38:43,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 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) [2021-10-28 08:38:43,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-10-28 08:38:43,957 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 6 [2021-10-28 08:38:43,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:38:43,958 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-28 08:38:43,958 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) [2021-10-28 08:38:43,959 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-10-28 08:38:43,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 08:38:43,960 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:38:43,960 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 08:38:43,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:38:44,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-28 08:38:44,177 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:38:44,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:38:44,178 INFO L85 PathProgramCache]: Analyzing trace with hash 855725686, now seen corresponding path program 1 times [2021-10-28 08:38:44,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:38:44,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843689694] [2021-10-28 08:38:44,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:38:44,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:38:44,196 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:38:44,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [458039580] [2021-10-28 08:38:44,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:38:44,197 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:38:44,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:38:44,200 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:38:44,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 08:38:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:44,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 08:38:44,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:38:44,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:38:44,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:38:44,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843689694] [2021-10-28 08:38:44,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:38:44,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458039580] [2021-10-28 08:38:44,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458039580] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:38:44,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:38:44,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-28 08:38:44,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883915251] [2021-10-28 08:38:44,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:38:44,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:38:44,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:38:44,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:38:44,364 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 08:38:44,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:38:44,403 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-10-28 08:38:44,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:38:44,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-10-28 08:38:44,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:38:44,405 INFO L225 Difference]: With dead ends: 22 [2021-10-28 08:38:44,405 INFO L226 Difference]: Without dead ends: 12 [2021-10-28 08:38:44,406 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:38:44,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-28 08:38:44,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-28 08:38:44,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:38:44,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-10-28 08:38:44,409 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 10 [2021-10-28 08:38:44,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:38:44,409 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-10-28 08:38:44,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 08:38:44,410 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-10-28 08:38:44,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 08:38:44,410 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:38:44,410 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:38:44,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:38:44,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:38:44,612 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:38:44,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:38:44,613 INFO L85 PathProgramCache]: Analyzing trace with hash 757648847, now seen corresponding path program 1 times [2021-10-28 08:38:44,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:38:44,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517378221] [2021-10-28 08:38:44,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:38:44,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:38:44,639 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:38:44,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284378935] [2021-10-28 08:38:44,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:38:44,640 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:38:44,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:38:44,646 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:38:44,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 08:38:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:44,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 08:38:44,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:38:44,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:38:44,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:38:44,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517378221] [2021-10-28 08:38:44,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:38:44,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284378935] [2021-10-28 08:38:44,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284378935] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:38:44,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:38:44,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 08:38:44,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968912160] [2021-10-28 08:38:44,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:38:44,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:38:44,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:38:44,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:38:44,974 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:38:45,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:38:45,032 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-10-28 08:38:45,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:38:45,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-28 08:38:45,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:38:45,033 INFO L225 Difference]: With dead ends: 12 [2021-10-28 08:38:45,034 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 08:38:45,034 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 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 08:38:45,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 08:38:45,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 08:38:45,035 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 08:38:45,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 08:38:45,035 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-10-28 08:38:45,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:38:45,035 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:38:45,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:38:45,036 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 08:38:45,036 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 08:38:45,038 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:38:45,039 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:38:45,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 08:38:45,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:38:45,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 08:38:45,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:38:45,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:38:45,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:38:45,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:38:45,309 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 08:38:45,309 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 08:38:45,309 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-10-28 08:38:45,310 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 37 38) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 1) (<= 1 ~counter~0) (= ULTIMATE.start_main_~x~0 1)) [2021-10-28 08:38:45,310 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-10-28 08:38:45,310 INFO L860 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: true [2021-10-28 08:38:45,310 INFO L857 garLoopResultBuilder]: For program point L34-1(lines 34 43) no Hoare annotation was computed. [2021-10-28 08:38:45,311 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 08:38:45,311 INFO L853 garLoopResultBuilder]: At program point L34-3(lines 34 43) the Hoare annotation is: (or (and (<= 0 ~counter~0) (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~x~0 1)) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ~counter~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~z~0 1)) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0))) [2021-10-28 08:38:45,313 INFO L857 garLoopResultBuilder]: For program point L34-4(lines 34 43) no Hoare annotation was computed. [2021-10-28 08:38:45,314 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 08:38:45,314 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 08:38:45,314 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 08:38:45,314 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-10-28 08:38:45,314 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-10-28 08:38:45,315 INFO L860 garLoopResultBuilder]: At program point L45(lines 24 46) the Hoare annotation is: true [2021-10-28 08:38:45,318 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-28 08:38:45,321 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:38:45,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:38:45 BoogieIcfgContainer [2021-10-28 08:38:45,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:38:45,350 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:38:45,351 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:38:45,351 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:38:45,351 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:38:43" (3/4) ... [2021-10-28 08:38:45,354 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 08:38:45,365 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-28 08:38:45,365 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 08:38:45,366 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:38:45,366 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:38:45,487 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:38:45,497 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:38:45,499 INFO L168 Benchmark]: Toolchain (without parser) took 2847.49 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 65.2 MB in the beginning and 86.0 MB in the end (delta: -20.8 MB). Peak memory consumption was 43.0 MB. Max. memory is 16.1 GB. [2021-10-28 08:38:45,499 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory was 62.7 MB in the beginning and 62.7 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:38:45,500 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.34 ms. Allocated memory is still 90.2 MB. Free memory was 65.0 MB in the beginning and 65.6 MB in the end (delta: -584.3 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:38:45,500 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.72 ms. Allocated memory is still 90.2 MB. Free memory was 65.6 MB in the beginning and 64.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:38:45,501 INFO L168 Benchmark]: Boogie Preprocessor took 20.18 ms. Allocated memory is still 90.2 MB. Free memory was 64.0 MB in the beginning and 63.0 MB in the end (delta: 983.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:38:45,501 INFO L168 Benchmark]: RCFGBuilder took 306.62 ms. Allocated memory is still 90.2 MB. Free memory was 63.0 MB in the beginning and 53.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:38:45,502 INFO L168 Benchmark]: TraceAbstraction took 2097.78 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 53.3 MB in the beginning and 44.5 MB in the end (delta: 8.7 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. [2021-10-28 08:38:45,503 INFO L168 Benchmark]: Witness Printer took 147.42 ms. Allocated memory is still 111.1 MB. Free memory was 44.5 MB in the beginning and 86.0 MB in the end (delta: -41.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:38:45,507 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory was 62.7 MB in the beginning and 62.7 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 232.34 ms. Allocated memory is still 90.2 MB. Free memory was 65.0 MB in the beginning and 65.6 MB in the end (delta: -584.3 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.72 ms. Allocated memory is still 90.2 MB. Free memory was 65.6 MB in the beginning and 64.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.18 ms. Allocated memory is still 90.2 MB. Free memory was 64.0 MB in the beginning and 63.0 MB in the end (delta: 983.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 306.62 ms. Allocated memory is still 90.2 MB. Free memory was 63.0 MB in the beginning and 53.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2097.78 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 53.3 MB in the beginning and 44.5 MB in the end (delta: 8.7 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. * Witness Printer took 147.42 ms. Allocated memory is still 111.1 MB. Free memory was 44.5 MB in the beginning and 86.0 MB in the end (delta: -41.4 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: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 29 SDslu, 39 SDs, 0 SdLazy, 32 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 15, 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 41 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 102 SizeOfPredicates, 9 NumberOfNonLiveVariables, 211 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((1 <= cond && y == 1) && 1 <= counter) && x == 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((0 <= counter && y == 1) && x == 1) || (((1 <= cond && 1 <= counter) && x == z + 1) && z == y) RESULT: Ultimate proved your program to be correct! [2021-10-28 08:38:45,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9049ec21-1e05-48e3-b9a9-024d8e918ca5/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...