./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY --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 15f2c27c8ff19b1764b20b7d08d4582e2b047f4871dbacc2fd506a74654d4ef0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:43:31,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:43:31,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:43:31,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:43:31,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:43:31,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:43:31,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:43:31,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:43:31,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:43:31,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:43:31,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:43:31,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:43:31,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:43:31,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:43:31,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:43:31,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:43:31,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:43:31,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:43:31,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:43:31,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:43:31,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:43:31,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:43:31,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:43:31,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:43:31,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:43:31,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:43:31,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:43:31,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:43:31,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:43:31,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:43:31,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:43:31,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:43:31,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:43:31,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:43:31,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:43:31,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:43:31,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:43:31,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:43:31,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:43:31,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:43:31,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:43:31,997 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 08:43:32,053 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:43:32,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:43:32,054 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:43:32,054 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:43:32,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:43:32,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:43:32,056 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:43:32,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:43:32,057 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:43:32,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:43:32,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:43:32,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:43:32,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:43:32,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:43:32,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:43:32,059 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:43:32,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:43:32,060 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:43:32,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:43:32,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:43:32,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:43:32,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:43:32,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:43:32,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:43:32,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:43:32,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:43:32,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:43:32,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:43:32,063 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:43:32,063 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:43:32,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:43:32,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:43:32,064 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_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15f2c27c8ff19b1764b20b7d08d4582e2b047f4871dbacc2fd506a74654d4ef0 [2021-11-07 08:43:32,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:43:32,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:43:32,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:43:32,411 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:43:32,412 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:43:32,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound1.c [2021-11-07 08:43:32,529 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/data/750a0f017/ad9ce63f1fb145f9ba3bb8594e849db1/FLAG410ae5850 [2021-11-07 08:43:33,070 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:43:33,072 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound1.c [2021-11-07 08:43:33,084 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/data/750a0f017/ad9ce63f1fb145f9ba3bb8594e849db1/FLAG410ae5850 [2021-11-07 08:43:33,406 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/data/750a0f017/ad9ce63f1fb145f9ba3bb8594e849db1 [2021-11-07 08:43:33,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:43:33,411 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:43:33,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:43:33,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:43:33,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:43:33,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:43:33" (1/1) ... [2021-11-07 08:43:33,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e3d8126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:33, skipping insertion in model container [2021-11-07 08:43:33,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:43:33" (1/1) ... [2021-11-07 08:43:33,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:43:33,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:43:33,668 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_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound1.c[525,538] [2021-11-07 08:43:33,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:43:33,693 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:43:33,708 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_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound1.c[525,538] [2021-11-07 08:43:33,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:43:33,731 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:43:33,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:33 WrapperNode [2021-11-07 08:43:33,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:43:33,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:43:33,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:43:33,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:43:33,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:33" (1/1) ... [2021-11-07 08:43:33,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:33" (1/1) ... [2021-11-07 08:43:33,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:43:33,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:43:33,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:43:33,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:43:33,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:33" (1/1) ... [2021-11-07 08:43:33,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:33" (1/1) ... [2021-11-07 08:43:33,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:33" (1/1) ... [2021-11-07 08:43:33,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:33" (1/1) ... [2021-11-07 08:43:33,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:33" (1/1) ... [2021-11-07 08:43:33,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:33" (1/1) ... [2021-11-07 08:43:33,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:33" (1/1) ... [2021-11-07 08:43:33,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:43:33,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:43:33,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:43:33,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:43:33,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:33" (1/1) ... [2021-11-07 08:43:33,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:43:33,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:43:33,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:43:33,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:43:33,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:43:33,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:43:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:43:33,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:43:34,166 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:43:34,166 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-07 08:43:34,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:43:34 BoogieIcfgContainer [2021-11-07 08:43:34,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:43:34,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:43:34,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:43:34,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:43:34,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:43:33" (1/3) ... [2021-11-07 08:43:34,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413f1d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:43:34, skipping insertion in model container [2021-11-07 08:43:34,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:43:33" (2/3) ... [2021-11-07 08:43:34,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413f1d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:43:34, skipping insertion in model container [2021-11-07 08:43:34,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:43:34" (3/3) ... [2021-11-07 08:43:34,178 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_valuebound1.c [2021-11-07 08:43:34,185 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:43:34,185 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-07 08:43:34,245 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:43:34,253 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 [2021-11-07 08:43:34,253 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-07 08:43:34,272 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 16 states have (on average 1.5625) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:34,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 08:43:34,278 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:34,278 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:34,279 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:43:34,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:34,286 INFO L85 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-11-07 08:43:34,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:34,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132812146] [2021-11-07 08:43:34,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:34,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:43:34,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:34,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132812146] [2021-11-07 08:43:34,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132812146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:34,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:34,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:43:34,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057832893] [2021-11-07 08:43:34,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:43:34,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:34,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:43:34,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:43:34,509 INFO L87 Difference]: Start difference. First operand has 19 states, 16 states have (on average 1.5625) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:34,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:34,527 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2021-11-07 08:43:34,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:43:34,529 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 08:43:34,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:34,538 INFO L225 Difference]: With dead ends: 35 [2021-11-07 08:43:34,538 INFO L226 Difference]: Without dead ends: 15 [2021-11-07 08:43:34,541 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:43:34,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-07 08:43:34,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-07 08:43:34,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:34,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-07 08:43:34,579 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2021-11-07 08:43:34,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:34,580 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-07 08:43:34,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:34,580 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-07 08:43:34,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 08:43:34,581 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:34,581 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:34,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:43:34,582 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:43:34,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:34,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-11-07 08:43:34,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:34,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121280233] [2021-11-07 08:43:34,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:34,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:34,609 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:43:34,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1351385872] [2021-11-07 08:43:34,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:34,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:43:34,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:43:34,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:43:34,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 08:43:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:34,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 08:43:34,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:43:35,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:43:35,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:35,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121280233] [2021-11-07 08:43:35,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:43:35,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351385872] [2021-11-07 08:43:35,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351385872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:35,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:35,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:43:35,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291049979] [2021-11-07 08:43:35,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:43:35,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:35,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:43:35,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:43:35,225 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:35,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:35,364 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-11-07 08:43:35,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:43:35,365 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 08:43:35,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:35,367 INFO L225 Difference]: With dead ends: 25 [2021-11-07 08:43:35,367 INFO L226 Difference]: Without dead ends: 19 [2021-11-07 08:43:35,369 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:43:35,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-07 08:43:35,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-11-07 08:43:35,379 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) [2021-11-07 08:43:35,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-11-07 08:43:35,381 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2021-11-07 08:43:35,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:35,381 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-11-07 08:43:35,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:35,383 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-11-07 08:43:35,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 08:43:35,385 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:35,387 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:35,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 08:43:35,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:43:35,601 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:43:35,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:35,602 INFO L85 PathProgramCache]: Analyzing trace with hash 636965506, now seen corresponding path program 1 times [2021-11-07 08:43:35,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:35,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541931800] [2021-11-07 08:43:35,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:35,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:35,626 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:43:35,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [970016390] [2021-11-07 08:43:35,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:35,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:43:35,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:43:35,629 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:43:35,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 08:43:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:35,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 08:43:35,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:43:35,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:43:35,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:35,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541931800] [2021-11-07 08:43:35,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:43:35,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970016390] [2021-11-07 08:43:35,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970016390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:35,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:35,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:43:35,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296632751] [2021-11-07 08:43:35,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:43:35,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:35,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:43:35,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:43:35,915 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:35,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:35,972 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-11-07 08:43:35,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:43:35,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-07 08:43:35,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:35,973 INFO L225 Difference]: With dead ends: 18 [2021-11-07 08:43:35,973 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 08:43:35,974 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:43:35,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 08:43:35,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 08:43:35,975 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) [2021-11-07 08:43:35,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 08:43:35,975 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-11-07 08:43:35,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:35,976 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 08:43:35,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:43:35,977 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 08:43:35,977 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 08:43:35,980 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 08:43:35,980 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 08:43:36,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 08:43:36,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:43:36,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 08:43:36,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 08:43:36,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 08:43:36,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 08:43:36,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 08:43:36,282 INFO L853 garLoopResultBuilder]: At program point L35-2(lines 35 44) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~z~0 1) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~k~0 1) (<= 0 ULTIMATE.start_main_~z~0) (= ULTIMATE.start_main_~y~0 1) (<= 1 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~x~0 1)) [2021-11-07 08:43:36,282 INFO L857 garLoopResultBuilder]: For program point L35-3(lines 35 44) no Hoare annotation was computed. [2021-11-07 08:43:36,283 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 08:43:36,283 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-11-07 08:43:36,283 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 38 39) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~z~0 1) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~k~0 1) (<= 0 ULTIMATE.start_main_~z~0) (= ULTIMATE.start_main_~y~0 1) (<= 1 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~x~0 1)) [2021-11-07 08:43:36,283 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-11-07 08:43:36,283 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-11-07 08:43:36,283 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2021-11-07 08:43:36,284 INFO L860 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: true [2021-11-07 08:43:36,284 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-07 08:43:36,284 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 08:43:36,284 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-07 08:43:36,284 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 08:43:36,284 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-11-07 08:43:36,284 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-11-07 08:43:36,285 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-11-07 08:43:36,285 INFO L857 garLoopResultBuilder]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-11-07 08:43:36,285 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 08:43:36,285 INFO L860 garLoopResultBuilder]: At program point L46(lines 23 47) the Hoare annotation is: true [2021-11-07 08:43:36,294 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-07 08:43:36,296 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 08:43:36,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:43:36 BoogieIcfgContainer [2021-11-07 08:43:36,321 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 08:43:36,322 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 08:43:36,322 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 08:43:36,322 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 08:43:36,323 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:43:34" (3/4) ... [2021-11-07 08:43:36,330 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 08:43:36,345 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-07 08:43:36,346 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-07 08:43:36,347 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 08:43:36,347 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 08:43:36,418 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/witness.graphml [2021-11-07 08:43:36,419 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 08:43:36,421 INFO L168 Benchmark]: Toolchain (without parser) took 3008.66 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 80.1 MB in the beginning and 72.3 MB in the end (delta: 7.8 MB). Peak memory consumption was 31.4 MB. Max. memory is 16.1 GB. [2021-11-07 08:43:36,422 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 113.2 MB. Free memory was 66.2 MB in the beginning and 66.2 MB in the end (delta: 51.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:43:36,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.27 ms. Allocated memory is still 113.2 MB. Free memory was 80.0 MB in the beginning and 87.6 MB in the end (delta: -7.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 08:43:36,424 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.59 ms. Allocated memory is still 113.2 MB. Free memory was 87.6 MB in the beginning and 86.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:43:36,426 INFO L168 Benchmark]: Boogie Preprocessor took 36.47 ms. Allocated memory is still 113.2 MB. Free memory was 86.3 MB in the beginning and 85.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:43:36,427 INFO L168 Benchmark]: RCFGBuilder took 341.84 ms. Allocated memory is still 113.2 MB. Free memory was 85.2 MB in the beginning and 75.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 08:43:36,429 INFO L168 Benchmark]: TraceAbstraction took 2151.03 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 75.1 MB in the beginning and 75.2 MB in the end (delta: -89.7 kB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:43:36,429 INFO L168 Benchmark]: Witness Printer took 97.23 ms. Allocated memory is still 136.3 MB. Free memory was 74.4 MB in the beginning and 72.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:43:36,432 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 113.2 MB. Free memory was 66.2 MB in the beginning and 66.2 MB in the end (delta: 51.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 320.27 ms. Allocated memory is still 113.2 MB. Free memory was 80.0 MB in the beginning and 87.6 MB in the end (delta: -7.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.59 ms. Allocated memory is still 113.2 MB. Free memory was 87.6 MB in the beginning and 86.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.47 ms. Allocated memory is still 113.2 MB. Free memory was 86.3 MB in the beginning and 85.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 341.84 ms. Allocated memory is still 113.2 MB. Free memory was 85.2 MB in the beginning and 75.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2151.03 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 75.1 MB in the beginning and 75.2 MB in the end (delta: -89.7 kB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. * Witness Printer took 97.23 ms. Allocated memory is still 136.3 MB. Free memory was 74.4 MB in the beginning and 72.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 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: 36 SDtfs, 23 SDslu, 30 SDs, 0 SdLazy, 34 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 55 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 134 SizeOfPredicates, 8 NumberOfNonLiveVariables, 136 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((0 <= k && z <= 1) && cond == 1) && k <= 1) && 0 <= z) && y == 1) && 1 <= c) && x == 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((((0 <= k && z <= 1) && cond == 1) && 1 <= cond) && k <= 1) && 0 <= z) && y == 1) && 1 <= c) && x == 1 RESULT: Ultimate proved your program to be correct! [2021-11-07 08:43:36,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75028dc5-817f-48d9-8cfb-9ea6686aa9c4/bin/uautomizer-AkOaLMaTGY/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