./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c47d59ab63382053ffbe7eb88792770801b76622345c0f78fbb8210938779c5e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:56:43,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:56:43,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:56:43,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:56:43,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:56:43,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:56:43,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:56:43,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:56:43,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:56:43,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:56:43,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:56:43,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:56:43,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:56:43,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:56:43,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:56:43,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:56:43,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:56:43,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:56:43,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:56:43,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:56:43,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:56:43,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:56:43,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:56:43,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:56:43,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:56:43,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:56:43,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:56:43,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:56:43,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:56:43,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:56:43,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:56:43,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:56:43,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:56:43,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:56:43,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:56:43,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:56:43,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:56:43,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:56:43,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:56:43,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:56:43,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:56:43,395 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 14:56:43,440 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:56:43,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:56:43,441 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:56:43,441 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:56:43,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:56:43,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:56:43,450 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:56:43,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:56:43,450 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:56:43,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:56:43,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:56:43,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:56:43,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:56:43,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:56:43,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:56:43,453 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:56:43,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:56:43,453 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:56:43,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:56:43,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:56:43,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:56:43,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:56:43,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:56:43,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:56:43,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:56:43,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:56:43,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:56:43,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:56:43,455 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:56:43,457 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:56:43,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:56:43,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:56:43,458 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_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c47d59ab63382053ffbe7eb88792770801b76622345c0f78fbb8210938779c5e [2021-11-22 14:56:43,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:56:43,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:56:43,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:56:43,785 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:56:43,787 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:56:43,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound10.c [2021-11-22 14:56:43,861 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/data/2c99ea7b8/fb958f3ed9044e288932b6f99c8823eb/FLAGd0c3914b7 [2021-11-22 14:56:44,379 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:56:44,380 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound10.c [2021-11-22 14:56:44,392 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/data/2c99ea7b8/fb958f3ed9044e288932b6f99c8823eb/FLAGd0c3914b7 [2021-11-22 14:56:44,744 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/data/2c99ea7b8/fb958f3ed9044e288932b6f99c8823eb [2021-11-22 14:56:44,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:56:44,751 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:56:44,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:56:44,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:56:44,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:56:44,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:56:44" (1/1) ... [2021-11-22 14:56:44,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56954a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:44, skipping insertion in model container [2021-11-22 14:56:44,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:56:44" (1/1) ... [2021-11-22 14:56:44,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:56:44,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:56:44,917 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound10.c[458,471] [2021-11-22 14:56:44,928 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:56:44,936 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:56:44,949 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound10.c[458,471] [2021-11-22 14:56:44,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:56:44,967 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:56:44,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:44 WrapperNode [2021-11-22 14:56:44,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:56:44,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:56:44,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:56:44,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:56:44,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:44" (1/1) ... [2021-11-22 14:56:44,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:44" (1/1) ... [2021-11-22 14:56:44,998 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 47 [2021-11-22 14:56:44,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:56:45,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:56:45,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:56:45,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:56:45,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:44" (1/1) ... [2021-11-22 14:56:45,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:44" (1/1) ... [2021-11-22 14:56:45,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:44" (1/1) ... [2021-11-22 14:56:45,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:44" (1/1) ... [2021-11-22 14:56:45,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:44" (1/1) ... [2021-11-22 14:56:45,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:44" (1/1) ... [2021-11-22 14:56:45,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:44" (1/1) ... [2021-11-22 14:56:45,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:56:45,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:56:45,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:56:45,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:56:45,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:44" (1/1) ... [2021-11-22 14:56:45,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:56:45,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:56:45,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:56:45,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:56:45,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:56:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:56:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:56:45,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:56:45,146 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:56:45,147 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:56:45,247 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:56:45,253 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:56:45,253 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 14:56:45,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:56:45 BoogieIcfgContainer [2021-11-22 14:56:45,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:56:45,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:56:45,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:56:45,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:56:45,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:56:44" (1/3) ... [2021-11-22 14:56:45,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42aa93ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:56:45, skipping insertion in model container [2021-11-22 14:56:45,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:44" (2/3) ... [2021-11-22 14:56:45,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42aa93ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:56:45, skipping insertion in model container [2021-11-22 14:56:45,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:56:45" (3/3) ... [2021-11-22 14:56:45,263 INFO L111 eAbstractionObserver]: Analyzing ICFG ps3-ll_valuebound10.c [2021-11-22 14:56:45,268 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:56:45,269 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-22 14:56:45,315 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:56:45,322 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 14:56:45,322 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-22 14:56:45,336 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:56:45,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 14:56:45,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:56:45,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:56:45,343 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:56:45,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:56:45,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-11-22 14:56:45,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:56:45,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68322524] [2021-11-22 14:56:45,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:56:45,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:56:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:56:45,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:56:45,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:56:45,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68322524] [2021-11-22 14:56:45,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68322524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:56:45,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:56:45,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:56:45,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846118911] [2021-11-22 14:56:45,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:56:45,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 14:56:45,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:56:45,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 14:56:45,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:56:45,592 INFO L87 Difference]: Start difference. First operand has 18 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:56:45,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:56:45,610 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2021-11-22 14:56:45,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 14:56:45,613 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-22 14:56:45,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:56:45,620 INFO L225 Difference]: With dead ends: 33 [2021-11-22 14:56:45,621 INFO L226 Difference]: Without dead ends: 14 [2021-11-22 14:56:45,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:56:45,631 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:56:45,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:56:45,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-22 14:56:45,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-22 14:56:45,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:56:45,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-22 14:56:45,667 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2021-11-22 14:56:45,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:56:45,667 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-22 14:56:45,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:56:45,668 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-22 14:56:45,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 14:56:45,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:56:45,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:56:45,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:56:45,670 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:56:45,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:56:45,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-11-22 14:56:45,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:56:45,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361847374] [2021-11-22 14:56:45,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:56:45,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:56:45,698 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:56:45,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265053765] [2021-11-22 14:56:45,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:56:45,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:56:45,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:56:45,708 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:56:45,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 14:56:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:56:45,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 14:56:45,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:56:45,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:56:45,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:56:45,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:56:45,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361847374] [2021-11-22 14:56:45,972 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:56:45,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265053765] [2021-11-22 14:56:45,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265053765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:56:45,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:56:45,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:56:45,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394288175] [2021-11-22 14:56:45,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:56:45,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:56:45,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:56:45,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:56:45,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:56:45,980 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2021-11-22 14:56:46,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:56:46,041 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-11-22 14:56:46,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:56:46,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 [2021-11-22 14:56:46,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:56:46,043 INFO L225 Difference]: With dead ends: 25 [2021-11-22 14:56:46,044 INFO L226 Difference]: Without dead ends: 19 [2021-11-22 14:56:46,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:56:46,046 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:56:46,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 29 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:56:46,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-22 14:56:46,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-11-22 14:56:46,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:56:46,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-11-22 14:56:46,059 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 7 [2021-11-22 14:56:46,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:56:46,060 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-11-22 14:56:46,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2021-11-22 14:56:46,061 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-11-22 14:56:46,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 14:56:46,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:56:46,066 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:56:46,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-22 14:56:46,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:56:46,267 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:56:46,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:56:46,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1958431838, now seen corresponding path program 1 times [2021-11-22 14:56:46,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:56:46,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520187993] [2021-11-22 14:56:46,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:56:46,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:56:46,282 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:56:46,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [934243675] [2021-11-22 14:56:46,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:56:46,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:56:46,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:56:46,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:56:46,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 14:56:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:56:46,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 14:56:46,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:56:46,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:56:46,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:56:46,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 14:56:46,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:56:46,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520187993] [2021-11-22 14:56:46,590 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:56:46,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934243675] [2021-11-22 14:56:46,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934243675] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:56:46,591 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 14:56:46,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-11-22 14:56:46,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766366698] [2021-11-22 14:56:46,592 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 14:56:46,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 14:56:46,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:56:46,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 14:56:46,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:56:46,594 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) [2021-11-22 14:56:46,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:56:46,677 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-11-22 14:56:46,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:56:46,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) Word has length 11 [2021-11-22 14:56:46,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:56:46,679 INFO L225 Difference]: With dead ends: 24 [2021-11-22 14:56:46,679 INFO L226 Difference]: Without dead ends: 0 [2021-11-22 14:56:46,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 14:56:46,683 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:56:46,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 21 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:56:46,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-22 14:56:46,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-22 14:56:46,687 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) [2021-11-22 14:56:46,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-22 14:56:46,687 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-11-22 14:56:46,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:56:46,688 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 14:56:46,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) [2021-11-22 14:56:46,689 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-22 14:56:46,689 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-22 14:56:46,691 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-22 14:56:46,692 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-22 14:56:46,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 14:56:46,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:56:46,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-22 14:56:47,020 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-22 14:56:47,021 INFO L854 garLoopResultBuilder]: At program point L27-2(lines 27 36) the Hoare annotation is: (or (and (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (= (+ (* 3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~x~0#1|))) (and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0))) [2021-11-22 14:56:47,021 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-11-22 14:56:47,021 INFO L858 garLoopResultBuilder]: For program point L27-3(lines 27 36) no Hoare annotation was computed. [2021-11-22 14:56:47,021 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2021-11-22 14:56:47,021 INFO L858 garLoopResultBuilder]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2021-11-22 14:56:47,022 INFO L858 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-11-22 14:56:47,022 INFO L861 garLoopResultBuilder]: At program point L38(lines 17 39) the Hoare annotation is: true [2021-11-22 14:56:47,022 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-22 14:56:47,022 INFO L858 garLoopResultBuilder]: For program point L30(lines 30 31) no Hoare annotation was computed. [2021-11-22 14:56:47,022 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-22 14:56:47,022 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-22 14:56:47,022 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-11-22 14:56:47,023 INFO L858 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2021-11-22 14:56:47,023 INFO L854 garLoopResultBuilder]: At program point L10-2(lines 9 15) the Hoare annotation is: (and (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (= (+ (* 3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~x~0#1|))) [2021-11-22 14:56:47,023 INFO L858 garLoopResultBuilder]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2021-11-22 14:56:47,023 INFO L858 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-11-22 14:56:47,023 INFO L861 garLoopResultBuilder]: At program point L10-5(lines 9 15) the Hoare annotation is: true [2021-11-22 14:56:47,033 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-22 14:56:47,035 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 14:56:47,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:56:47 BoogieIcfgContainer [2021-11-22 14:56:47,061 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 14:56:47,063 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 14:56:47,063 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 14:56:47,063 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 14:56:47,064 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:56:45" (3/4) ... [2021-11-22 14:56:47,067 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-22 14:56:47,078 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-22 14:56:47,079 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-22 14:56:47,079 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-22 14:56:47,079 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-22 14:56:47,130 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/witness.graphml [2021-11-22 14:56:47,130 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 14:56:47,131 INFO L158 Benchmark]: Toolchain (without parser) took 2380.05ms. Allocated memory is still 107.0MB. Free memory was 77.2MB in the beginning and 39.8MB in the end (delta: 37.4MB). Peak memory consumption was 40.2MB. Max. memory is 16.1GB. [2021-11-22 14:56:47,132 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 83.9MB. Free memory is still 51.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 14:56:47,132 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.73ms. Allocated memory is still 107.0MB. Free memory was 76.9MB in the beginning and 67.1MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 14:56:47,133 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.93ms. Allocated memory is still 107.0MB. Free memory was 66.9MB in the beginning and 65.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 14:56:47,133 INFO L158 Benchmark]: Boogie Preprocessor took 20.68ms. Allocated memory is still 107.0MB. Free memory was 65.4MB in the beginning and 64.6MB in the end (delta: 849.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 14:56:47,133 INFO L158 Benchmark]: RCFGBuilder took 234.09ms. Allocated memory is still 107.0MB. Free memory was 64.4MB in the beginning and 55.5MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 14:56:47,134 INFO L158 Benchmark]: TraceAbstraction took 1804.32ms. Allocated memory is still 107.0MB. Free memory was 54.9MB in the beginning and 42.3MB in the end (delta: 12.6MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2021-11-22 14:56:47,134 INFO L158 Benchmark]: Witness Printer took 67.36ms. Allocated memory is still 107.0MB. Free memory was 42.3MB in the beginning and 39.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 14:56:47,137 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 83.9MB. Free memory is still 51.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 210.73ms. Allocated memory is still 107.0MB. Free memory was 76.9MB in the beginning and 67.1MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.93ms. Allocated memory is still 107.0MB. Free memory was 66.9MB in the beginning and 65.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.68ms. Allocated memory is still 107.0MB. Free memory was 65.4MB in the beginning and 64.6MB in the end (delta: 849.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 234.09ms. Allocated memory is still 107.0MB. Free memory was 64.4MB in the beginning and 55.5MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1804.32ms. Allocated memory is still 107.0MB. Free memory was 54.9MB in the beginning and 42.3MB in the end (delta: 12.6MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. * Witness Printer took 67.36ms. Allocated memory is still 107.0MB. Free memory was 42.3MB in the beginning and 39.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: 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, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 68 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 36 mSDtfsCounter, 34 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 13, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 52 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 35 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 156 SizeOfPredicates, 6 NumberOfNonLiveVariables, 103 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 1/4 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: 9]: Loop Invariant Derived loop invariant: 1 <= cond && 3 * (y * y) + 2 * (y * y * y) + y == 6 * x - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (1 <= cond && 3 * (y * y) + 2 * (y * y * y) + y == 6 * x) || (y == 0 && x == 0) RESULT: Ultimate proved your program to be correct! [2021-11-22 14:56:47,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fb3841-828b-4ec1-80d2-f39bec63b14b/bin/uautomizer-w2VwFs6gM0/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 Result: TRUE