./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 91f380cc586fc37a21f02c3c45ccd402d5300ed9 ...................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:15:28,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:15:28,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:15:28,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:15:28,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:15:28,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:15:28,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:15:28,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:15:28,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:15:28,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:15:28,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:15:28,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:15:28,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:15:28,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:15:28,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:15:28,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:15:28,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:15:28,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:15:28,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:15:28,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:15:28,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:15:28,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:15:28,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:15:28,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:15:28,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:15:28,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:15:28,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:15:28,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:15:28,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:15:28,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:15:28,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:15:28,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:15:28,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:15:28,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:15:28,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:15:28,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:15:28,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:15:28,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:15:28,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:15:28,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:15:28,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:15:28,241 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:15:28,265 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:15:28,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:15:28,266 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:15:28,266 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:15:28,267 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:15:28,267 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:15:28,267 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:15:28,267 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:15:28,267 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:15:28,268 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:15:28,268 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:15:28,268 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:15:28,268 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:15:28,269 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:15:28,269 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:15:28,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:15:28,270 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:15:28,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:15:28,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:15:28,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:15:28,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:15:28,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:15:28,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:15:28,271 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:15:28,271 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:15:28,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:15:28,272 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:15:28,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:15:28,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:15:28,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:15:28,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:15:28,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:15:28,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:15:28,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:15:28,274 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:15:28,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:15:28,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:15:28,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:15:28,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:15:28,274 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91f380cc586fc37a21f02c3c45ccd402d5300ed9 [2021-10-16 02:15:28,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:15:28,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:15:28,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:15:28,610 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:15:28,611 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:15:28,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c [2021-10-16 02:15:28,674 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/data/03658915f/79ed210ad68a46adb1bc6c549e34b593/FLAG612d8d168 [2021-10-16 02:15:29,128 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:15:29,129 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c [2021-10-16 02:15:29,147 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/data/03658915f/79ed210ad68a46adb1bc6c549e34b593/FLAG612d8d168 [2021-10-16 02:15:29,489 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/data/03658915f/79ed210ad68a46adb1bc6c549e34b593 [2021-10-16 02:15:29,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:15:29,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:15:29,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:15:29,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:15:29,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:15:29,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:15:29" (1/1) ... [2021-10-16 02:15:29,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1884499e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:29, skipping insertion in model container [2021-10-16 02:15:29,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:15:29" (1/1) ... [2021-10-16 02:15:29,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:15:29,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:15:29,732 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_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c[458,471] [2021-10-16 02:15:29,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:15:29,774 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:15:29,790 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_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c[458,471] [2021-10-16 02:15:29,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:15:29,831 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:15:29,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:29 WrapperNode [2021-10-16 02:15:29,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:15:29,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:15:29,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:15:29,833 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:15:29,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:29" (1/1) ... [2021-10-16 02:15:29,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:29" (1/1) ... [2021-10-16 02:15:29,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:15:29,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:15:29,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:15:29,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:15:29,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:29" (1/1) ... [2021-10-16 02:15:29,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:29" (1/1) ... [2021-10-16 02:15:29,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:29" (1/1) ... [2021-10-16 02:15:29,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:29" (1/1) ... [2021-10-16 02:15:29,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:29" (1/1) ... [2021-10-16 02:15:29,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:29" (1/1) ... [2021-10-16 02:15:29,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:29" (1/1) ... [2021-10-16 02:15:29,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:15:29,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:15:29,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:15:29,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:15:29,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:29" (1/1) ... [2021-10-16 02:15:29,896 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:15:29,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:15:29,930 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:15:29,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:15:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:15:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:15:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:15:29,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:15:30,249 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:15:30,249 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-16 02:15:30,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:15:30 BoogieIcfgContainer [2021-10-16 02:15:30,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:15:30,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:15:30,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:15:30,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:15:30,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:15:29" (1/3) ... [2021-10-16 02:15:30,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb6afa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:15:30, skipping insertion in model container [2021-10-16 02:15:30,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:29" (2/3) ... [2021-10-16 02:15:30,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb6afa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:15:30, skipping insertion in model container [2021-10-16 02:15:30,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:15:30" (3/3) ... [2021-10-16 02:15:30,260 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_unwindbound1.c [2021-10-16 02:15:30,266 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:15:30,266 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-16 02:15:30,333 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:15:30,354 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:15:30,354 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-16 02:15:30,388 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:30,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:15:30,397 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:15:30,398 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:15:30,398 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:15:30,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:15:30,404 INFO L82 PathProgramCache]: Analyzing trace with hash 93462408, now seen corresponding path program 1 times [2021-10-16 02:15:30,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:15:30,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833803012] [2021-10-16 02:15:30,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:15:30,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:15:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:15:30,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:15:30,558 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:15:30,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833803012] [2021-10-16 02:15:30,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833803012] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:15:30,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:15:30,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:15:30,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366670807] [2021-10-16 02:15:30,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:15:30,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:15:30,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:15:30,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:15:30,580 INFO L87 Difference]: Start difference. First operand has 17 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 16 states have internal predecessors, (22), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:30,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:15:30,591 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2021-10-16 02:15:30,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:15:30,593 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-10-16 02:15:30,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:15:30,599 INFO L225 Difference]: With dead ends: 33 [2021-10-16 02:15:30,599 INFO L226 Difference]: Without dead ends: 15 [2021-10-16 02:15:30,601 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:15:30,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-16 02:15:30,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-16 02:15:30,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:30,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-16 02:15:30,630 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 5 [2021-10-16 02:15:30,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:15:30,631 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-16 02:15:30,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:30,631 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-16 02:15:30,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:15:30,632 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:15:30,632 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:15:30,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:15:30,659 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:15:30,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:15:30,664 INFO L82 PathProgramCache]: Analyzing trace with hash 92788139, now seen corresponding path program 1 times [2021-10-16 02:15:30,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:15:30,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025960552] [2021-10-16 02:15:30,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:15:30,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:15:30,697 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:15:30,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1656248537] [2021-10-16 02:15:30,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:15:30,703 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:15:30,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:15:30,705 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:15:30,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:15:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:15:30,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:15:30,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:15:30,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:15:30,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:15:31,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:15:31,432 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:15:31,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025960552] [2021-10-16 02:15:31,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:15:31,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656248537] [2021-10-16 02:15:31,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656248537] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:15:31,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:15:31,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:15:31,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070510358] [2021-10-16 02:15:31,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:15:31,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:15:31,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:15:31,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:15:31,438 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:31,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:15:31,782 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2021-10-16 02:15:31,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:15:31,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-16 02:15:31,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:15:31,784 INFO L225 Difference]: With dead ends: 26 [2021-10-16 02:15:31,784 INFO L226 Difference]: Without dead ends: 15 [2021-10-16 02:15:31,785 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 172.8ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:15:31,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-16 02:15:31,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-16 02:15:31,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:31,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-16 02:15:31,789 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 5 [2021-10-16 02:15:31,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:15:31,790 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-16 02:15:31,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:31,790 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-16 02:15:31,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 02:15:31,791 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:15:31,791 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:15:31,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:15:32,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:15:32,017 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:15:32,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:15:32,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1170197384, now seen corresponding path program 1 times [2021-10-16 02:15:32,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:15:32,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542844967] [2021-10-16 02:15:32,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:15:32,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:15:32,041 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:15:32,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1504637289] [2021-10-16 02:15:32,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:15:32,046 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:15:32,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:15:32,048 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:15:32,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 02:15:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:15:32,133 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:15:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:15:32,179 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:15:32,179 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:15:32,180 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:15:32,182 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:15:32,183 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:15:32,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:15:32,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-16 02:15:32,418 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:15:32,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:15:32 BoogieIcfgContainer [2021-10-16 02:15:32,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:15:32,443 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:15:32,443 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:15:32,444 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:15:32,444 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:15:30" (3/4) ... [2021-10-16 02:15:32,445 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 02:15:32,488 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:15:32,488 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:15:32,490 INFO L168 Benchmark]: Toolchain (without parser) took 2996.42 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 51.8 MB in the beginning and 60.1 MB in the end (delta: -8.3 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:32,491 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 92.3 MB. Free memory is still 67.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:15:32,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.57 ms. Allocated memory is still 92.3 MB. Free memory was 51.5 MB in the beginning and 68.2 MB in the end (delta: -16.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:32,492 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.60 ms. Allocated memory is still 92.3 MB. Free memory was 68.2 MB in the beginning and 66.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:32,493 INFO L168 Benchmark]: Boogie Preprocessor took 21.60 ms. Allocated memory is still 92.3 MB. Free memory was 66.6 MB in the beginning and 65.7 MB in the end (delta: 936.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:15:32,494 INFO L168 Benchmark]: RCFGBuilder took 363.62 ms. Allocated memory is still 92.3 MB. Free memory was 65.5 MB in the beginning and 53.8 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:32,494 INFO L168 Benchmark]: TraceAbstraction took 2189.73 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 53.2 MB in the beginning and 62.8 MB in the end (delta: -9.7 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:32,495 INFO L168 Benchmark]: Witness Printer took 45.26 ms. Allocated memory is still 111.1 MB. Free memory was 62.8 MB in the beginning and 60.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:32,499 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 92.3 MB. Free memory is still 67.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 330.57 ms. Allocated memory is still 92.3 MB. Free memory was 51.5 MB in the beginning and 68.2 MB in the end (delta: -16.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.60 ms. Allocated memory is still 92.3 MB. Free memory was 68.2 MB in the beginning and 66.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.60 ms. Allocated memory is still 92.3 MB. Free memory was 66.6 MB in the beginning and 65.7 MB in the end (delta: 936.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 363.62 ms. Allocated memory is still 92.3 MB. Free memory was 65.5 MB in the beginning and 53.8 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2189.73 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 53.2 MB in the beginning and 62.8 MB in the end (delta: -9.7 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. * Witness Printer took 45.26 ms. Allocated memory is still 111.1 MB. Free memory was 62.8 MB in the beginning and 60.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L7] COND FALSE !(!cond) [L24] y = 0 [L25] x = 0 [L26] c = 0 VAL [counter=0] [L28] EXPR counter++ VAL [counter=1] [L28] COND TRUE counter++<1 [L10] COND FALSE !(!(cond)) VAL [counter=1] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [counter=1] [L28] EXPR counter++ VAL [counter=2] [L28] COND FALSE !(counter++<1) [L10] COND FALSE !(!(cond)) VAL [counter=2] [L10] COND TRUE !(cond) VAL [counter=2] [L12] reach_error() VAL [counter=2] - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2089.9ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 33.6ms, AutomataDifference: 383.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 26 SDtfs, 26 SDslu, 9 SDs, 0 SdLazy, 16 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 298.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 172.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19.5ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.5ms SsaConstructionTime, 76.0ms SatisfiabilityAnalysisTime, 673.9ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 92 SizeOfPredicates, 3 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-16 02:15:32,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f46729a-9455-4ad8-aba0-ce3d1e01e34a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...