./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-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_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/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_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/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_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/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 75e3ae35873fc976ba5f9091947bbca66fbdab4b ..................................................................................................................................................................................................................................................................................................................................................................................... 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 02:15:06,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:15:06,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:15:06,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:15:06,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:15:06,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:15:06,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:15:06,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:15:06,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:15:06,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:15:06,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:15:06,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:15:06,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:15:06,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:15:06,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:15:06,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:15:06,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:15:06,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:15:06,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:15:06,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:15:06,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:15:06,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:15:06,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:15:06,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:15:06,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:15:06,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:15:06,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:15:06,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:15:06,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:15:06,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:15:06,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:15:06,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:15:06,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:15:06,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:15:06,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:15:06,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:15:06,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:15:06,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:15:06,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:15:06,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:15:06,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:15:06,477 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:15:06,529 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:15:06,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:15:06,531 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:15:06,531 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:15:06,532 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:15:06,532 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:15:06,532 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:15:06,532 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:15:06,532 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:15:06,533 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:15:06,540 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:15:06,540 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:15:06,540 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:15:06,540 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:15:06,541 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:15:06,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:15:06,542 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:15:06,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:15:06,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:15:06,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:15:06,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:15:06,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:15:06,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:15:06,543 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:15:06,543 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:15:06,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:15:06,544 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:15:06,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:15:06,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:15:06,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:15:06,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:15:06,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:15:06,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:15:06,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:15:06,547 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:15:06,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:15:06,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:15:06,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:15:06,548 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:15:06,548 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_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75e3ae35873fc976ba5f9091947bbca66fbdab4b [2021-10-16 02:15:06,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:15:06,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:15:06,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:15:06,865 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:15:06,876 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:15:06,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c [2021-10-16 02:15:06,953 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs/data/9e2129a3f/daf8dd60049840cab8a24e19f2509b56/FLAGd08e1c67b [2021-10-16 02:15:07,446 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:15:07,447 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c [2021-10-16 02:15:07,455 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs/data/9e2129a3f/daf8dd60049840cab8a24e19f2509b56/FLAGd08e1c67b [2021-10-16 02:15:07,816 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs/data/9e2129a3f/daf8dd60049840cab8a24e19f2509b56 [2021-10-16 02:15:07,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:15:07,820 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:15:07,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:15:07,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:15:07,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:15:07,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:15:07" (1/1) ... [2021-10-16 02:15:07,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64f70d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:07, skipping insertion in model container [2021-10-16 02:15:07,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:15:07" (1/1) ... [2021-10-16 02:15:07,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:15:07,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:15:08,029 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_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c[597,610] [2021-10-16 02:15:08,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:15:08,052 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:15:08,062 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_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c[597,610] [2021-10-16 02:15:08,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:15:08,082 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:15:08,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:08 WrapperNode [2021-10-16 02:15:08,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:15:08,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:15:08,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:15:08,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:15:08,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:08" (1/1) ... [2021-10-16 02:15:08,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:08" (1/1) ... [2021-10-16 02:15:08,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:15:08,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:15:08,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:15:08,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:15:08,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:08" (1/1) ... [2021-10-16 02:15:08,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:08" (1/1) ... [2021-10-16 02:15:08,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:08" (1/1) ... [2021-10-16 02:15:08,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:08" (1/1) ... [2021-10-16 02:15:08,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:08" (1/1) ... [2021-10-16 02:15:08,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:08" (1/1) ... [2021-10-16 02:15:08,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:08" (1/1) ... [2021-10-16 02:15:08,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:15:08,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:15:08,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:15:08,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:15:08,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:08" (1/1) ... [2021-10-16 02:15:08,171 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:15:08,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:15:08,196 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:15:08,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:15:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:15:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:15:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:15:08,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:15:08,481 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:15:08,482 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-16 02:15:08,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:15:08 BoogieIcfgContainer [2021-10-16 02:15:08,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:15:08,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:15:08,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:15:08,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:15:08,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:15:07" (1/3) ... [2021-10-16 02:15:08,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765ca638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:15:08, skipping insertion in model container [2021-10-16 02:15:08,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:08" (2/3) ... [2021-10-16 02:15:08,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765ca638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:15:08, skipping insertion in model container [2021-10-16 02:15:08,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:15:08" (3/3) ... [2021-10-16 02:15:08,492 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound1.c [2021-10-16 02:15:08,497 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:15:08,497 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 02:15:08,543 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:15:08,549 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 02:15:08,550 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-16 02:15:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:08,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:15:08,568 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:15:08,568 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:15:08,569 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:15:08,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:15:08,574 INFO L82 PathProgramCache]: Analyzing trace with hash 79609593, now seen corresponding path program 1 times [2021-10-16 02:15:08,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:15:08,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892202671] [2021-10-16 02:15:08,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:15:08,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:15:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:15:08,826 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 02:15:08,827 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:15:08,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892202671] [2021-10-16 02:15:08,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892202671] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:15:08,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:15:08,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:15:08,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740025539] [2021-10-16 02:15:08,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:15:08,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:15:08,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:15:08,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:15:08,863 INFO L87 Difference]: Start difference. First operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 02:15:08,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:15:08,877 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2021-10-16 02:15:08,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:15:08,879 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 02:15:08,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:15:08,888 INFO L225 Difference]: With dead ends: 25 [2021-10-16 02:15:08,888 INFO L226 Difference]: Without dead ends: 11 [2021-10-16 02:15:08,893 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 02:15:08,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-16 02:15:08,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-16 02:15:08,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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) [2021-10-16 02:15:08,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-10-16 02:15:08,923 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2021-10-16 02:15:08,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:15:08,923 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-16 02:15:08,924 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 02:15:08,924 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-10-16 02:15:08,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:15:08,924 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:15:08,925 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:15:08,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:15:08,925 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:15:08,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:15:08,930 INFO L82 PathProgramCache]: Analyzing trace with hash 78719836, now seen corresponding path program 1 times [2021-10-16 02:15:08,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:15:08,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926696992] [2021-10-16 02:15:08,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:15:08,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:15:08,958 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:15:08,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732418478] [2021-10-16 02:15:08,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:15:08,958 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:15:08,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:15:08,960 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:15:08,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:15:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:15:09,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 02:15:09,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:15:09,236 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 02:15:09,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:15:09,341 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 02:15:09,342 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:15:09,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926696992] [2021-10-16 02:15:09,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:15:09,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732418478] [2021-10-16 02:15:09,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732418478] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:15:09,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:15:09,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:15:09,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180684190] [2021-10-16 02:15:09,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:15:09,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:15:09,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:15:09,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:15:09,351 INFO L87 Difference]: Start difference. First operand 11 states and 12 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 02:15:09,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:15:09,731 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-10-16 02:15:09,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:15:09,732 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 02:15:09,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:15:09,733 INFO L225 Difference]: With dead ends: 20 [2021-10-16 02:15:09,733 INFO L226 Difference]: Without dead ends: 13 [2021-10-16 02:15:09,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:15:09,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-16 02:15:09,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-16 02:15:09,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:09,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-16 02:15:09,738 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 5 [2021-10-16 02:15:09,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:15:09,739 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-16 02:15:09,739 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 02:15:09,739 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-16 02:15:09,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:15:09,740 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:15:09,740 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:15:09,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:15:09,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:15:09,950 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:15:09,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:15:09,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1909642267, now seen corresponding path program 1 times [2021-10-16 02:15:09,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:15:09,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749740811] [2021-10-16 02:15:09,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:15:09,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:15:09,975 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:15:09,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1408973149] [2021-10-16 02:15:09,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:15:09,980 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:15:09,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:15:09,981 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:15:09,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 02:15:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:15:10,061 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:15:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:15:10,117 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:15:10,118 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:15:10,119 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:15:10,120 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:15:10,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:15:10,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:15:10,328 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:15:10,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:15:10 BoogieIcfgContainer [2021-10-16 02:15:10,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:15:10,353 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:15:10,353 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:15:10,354 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:15:10,354 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:15:08" (3/4) ... [2021-10-16 02:15:10,358 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 02:15:10,408 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:15:10,409 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:15:10,410 INFO L168 Benchmark]: Toolchain (without parser) took 2588.79 ms. Allocated memory is still 113.2 MB. Free memory was 73.8 MB in the beginning and 67.8 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:10,411 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 113.2 MB. Free memory was 90.1 MB in the beginning and 90.1 MB in the end (delta: 51.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:15:10,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.78 ms. Allocated memory is still 113.2 MB. Free memory was 73.6 MB in the beginning and 87.9 MB in the end (delta: -14.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:10,412 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.01 ms. Allocated memory is still 113.2 MB. Free memory was 87.9 MB in the beginning and 86.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:15:10,413 INFO L168 Benchmark]: Boogie Preprocessor took 47.75 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). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:10,414 INFO L168 Benchmark]: RCFGBuilder took 320.04 ms. Allocated memory is still 113.2 MB. Free memory was 85.2 MB in the beginning and 73.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:10,415 INFO L168 Benchmark]: TraceAbstraction took 1865.90 ms. Allocated memory is still 113.2 MB. Free memory was 72.7 MB in the beginning and 69.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:10,415 INFO L168 Benchmark]: Witness Printer took 55.63 ms. Allocated memory is still 113.2 MB. Free memory was 69.9 MB in the beginning and 67.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:10,420 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 113.2 MB. Free memory was 90.1 MB in the beginning and 90.1 MB in the end (delta: 51.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 260.78 ms. Allocated memory is still 113.2 MB. Free memory was 73.6 MB in the beginning and 87.9 MB in the end (delta: -14.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.01 ms. Allocated memory is still 113.2 MB. Free memory was 87.9 MB in the beginning and 86.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.75 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). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 320.04 ms. Allocated memory is still 113.2 MB. Free memory was 85.2 MB in the beginning and 73.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1865.90 ms. Allocated memory is still 113.2 MB. Free memory was 72.7 MB in the beginning and 69.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Witness Printer took 55.63 ms. Allocated memory is still 113.2 MB. Free memory was 69.9 MB in the beginning and 67.8 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, 0.0ms 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: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L21] int counter = 0; [L23] int X, Y; [L24] long long x, y, v, xy, yx; [L25] X = __VERIFIER_nondet_int() [L26] Y = __VERIFIER_nondet_int() [L27] v = ((long long) 2 * Y) - X [L28] y = 0 [L29] x = 0 VAL [counter=0] [L31] EXPR counter++ VAL [counter=1] [L31] COND TRUE counter++<1 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y [L14] COND FALSE !(!(cond)) VAL [counter=1] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=1] [L31] EXPR counter++ VAL [counter=2] [L31] COND FALSE !(counter++<1) [L47] xy = (long long) x*y [L48] yx = (long long) Y*x [L14] COND TRUE !(cond) VAL [counter=2] [L16] reach_error() VAL [counter=2] - UnprovableResult [Line: 16]: 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, 13 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1784.6ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 9.2ms, AutomataDifference: 441.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 21 SDtfs, 16 SDslu, 8 SDs, 0 SdLazy, 14 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 341.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 48.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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: 20.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 38.2ms SsaConstructionTime, 97.3ms SatisfiabilityAnalysisTime, 405.0ms InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 76 SizeOfPredicates, 8 NumberOfNonLiveVariables, 59 ConjunctsInSsa, 13 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 02:15:10,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d8e0eaa-de07-481d-bb1f-d219b4747c8c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...