./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 e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/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_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0 --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 f5dead2b097a3e2aa15cd919ca1c3a66944ae841df5c6a1b5b64a326ca5f0b4a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 16:29:24,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:29:24,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:29:24,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:29:24,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:29:24,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:29:24,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:29:24,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:29:24,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:29:24,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:29:24,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:29:24,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:29:24,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:29:24,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:29:24,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:29:24,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:29:24,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:29:24,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:29:24,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:29:24,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:29:24,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:29:24,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:29:24,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:29:24,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:29:24,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:29:24,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:29:24,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:29:24,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:29:24,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:29:24,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:29:24,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:29:24,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:29:24,341 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:29:24,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:29:24,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:29:24,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:29:24,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:29:24,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:29:24,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:29:24,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:29:24,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:29:24,348 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 16:29:24,389 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:29:24,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:29:24,390 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:29:24,390 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:29:24,391 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:29:24,392 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:29:24,392 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:29:24,392 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:29:24,392 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:29:24,393 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:29:24,394 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:29:24,394 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:29:24,394 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:29:24,395 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:29:24,395 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:29:24,395 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:29:24,395 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:29:24,396 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:29:24,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:29:24,397 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:29:24,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:29:24,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:29:24,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:29:24,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:29:24,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:29:24,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:29:24,399 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:29:24,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:29:24,399 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:29:24,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:29:24,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:29:24,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:29:24,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:29:24,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:29:24,402 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:29:24,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:29:24,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:29:24,403 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:29:24,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:29:24,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:29:24,404 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:29:24,404 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5dead2b097a3e2aa15cd919ca1c3a66944ae841df5c6a1b5b64a326ca5f0b4a [2022-11-16 16:29:24,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:29:24,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:29:24,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:29:24,742 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:29:24,742 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:29:24,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c [2022-11-16 16:29:24,809 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/data/1c7fe29ea/ed0b3940faf14af6935bb9c2305600c5/FLAGb6f2d80c6 [2022-11-16 16:29:25,243 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:29:25,245 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c [2022-11-16 16:29:25,254 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/data/1c7fe29ea/ed0b3940faf14af6935bb9c2305600c5/FLAGb6f2d80c6 [2022-11-16 16:29:25,600 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/data/1c7fe29ea/ed0b3940faf14af6935bb9c2305600c5 [2022-11-16 16:29:25,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:29:25,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:29:25,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:29:25,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:29:25,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:29:25,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:29:25" (1/1) ... [2022-11-16 16:29:25,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55d05e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:29:25, skipping insertion in model container [2022-11-16 16:29:25,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:29:25" (1/1) ... [2022-11-16 16:29:25,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:29:25,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:29:25,853 WARN L229 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_7337371b-8778-4e3b-b5a7-6e4bf041f113/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c[597,610] [2022-11-16 16:29:25,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:29:25,877 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:29:25,889 WARN L229 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_7337371b-8778-4e3b-b5a7-6e4bf041f113/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c[597,610] [2022-11-16 16:29:25,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:29:25,909 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:29:25,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:29:25 WrapperNode [2022-11-16 16:29:25,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:29:25,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:29:25,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:29:25,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:29:25,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:29:25" (1/1) ... [2022-11-16 16:29:25,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:29:25" (1/1) ... [2022-11-16 16:29:25,940 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2022-11-16 16:29:25,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:29:25,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:29:25,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:29:25,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:29:25,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:29:25" (1/1) ... [2022-11-16 16:29:25,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:29:25" (1/1) ... [2022-11-16 16:29:25,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:29:25" (1/1) ... [2022-11-16 16:29:25,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:29:25" (1/1) ... [2022-11-16 16:29:25,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:29:25" (1/1) ... [2022-11-16 16:29:25,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:29:25" (1/1) ... [2022-11-16 16:29:25,958 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:29:25" (1/1) ... [2022-11-16 16:29:25,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:29:25" (1/1) ... [2022-11-16 16:29:25,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:29:25,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:29:25,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:29:25,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:29:25,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:29:25" (1/1) ... [2022-11-16 16:29:25,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:29:25,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:29:26,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:29:26,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:29:26,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:29:26,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:29:26,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:29:26,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:29:26,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 16:29:26,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 16:29:26,125 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:29:26,127 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:29:26,331 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:29:26,370 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:29:26,383 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 16:29:26,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:29:26 BoogieIcfgContainer [2022-11-16 16:29:26,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:29:26,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:29:26,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:29:26,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:29:26,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:29:25" (1/3) ... [2022-11-16 16:29:26,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a357a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:29:26, skipping insertion in model container [2022-11-16 16:29:26,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:29:25" (2/3) ... [2022-11-16 16:29:26,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a357a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:29:26, skipping insertion in model container [2022-11-16 16:29:26,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:29:26" (3/3) ... [2022-11-16 16:29:26,412 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound1.c [2022-11-16 16:29:26,450 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:29:26,463 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 16:29:26,519 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:29:26,530 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4f76c455, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:29:26,531 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 16:29:26,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:29:26,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 16:29:26,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:29:26,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:29:26,544 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:29:26,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:29:26,552 INFO L85 PathProgramCache]: Analyzing trace with hash -26250642, now seen corresponding path program 1 times [2022-11-16 16:29:26,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:29:26,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911996815] [2022-11-16 16:29:26,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:29:26,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:29:26,676 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 16:29:26,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1951498028] [2022-11-16 16:29:26,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:29:26,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:29:26,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:29:26,683 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:29:26,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 16:29:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:29:26,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 16:29:26,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:29:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:29:26,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:29:26,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:29:26,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911996815] [2022-11-16 16:29:26,890 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 16:29:26,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951498028] [2022-11-16 16:29:26,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951498028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:29:26,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:29:26,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 16:29:26,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065744532] [2022-11-16 16:29:26,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:29:26,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 16:29:26,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:29:26,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 16:29:26,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 16:29:26,927 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:29:27,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:29:27,056 INFO L93 Difference]: Finished difference Result 42 states and 58 transitions. [2022-11-16 16:29:27,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 16:29:27,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 16:29:27,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:29:27,065 INFO L225 Difference]: With dead ends: 42 [2022-11-16 16:29:27,065 INFO L226 Difference]: Without dead ends: 21 [2022-11-16 16:29:27,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 16:29:27,071 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 12 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:29:27,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 37 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:29:27,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-16 16:29:27,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-16 16:29:27,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:29:27,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-11-16 16:29:27,111 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 7 [2022-11-16 16:29:27,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:29:27,111 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-11-16 16:29:27,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:29:27,112 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-11-16 16:29:27,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 16:29:27,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:29:27,113 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:29:27,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 16:29:27,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 16:29:27,320 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:29:27,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:29:27,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1971909778, now seen corresponding path program 1 times [2022-11-16 16:29:27,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:29:27,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719756222] [2022-11-16 16:29:27,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:29:27,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:29:27,348 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 16:29:27,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344822926] [2022-11-16 16:29:27,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:29:27,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:29:27,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:29:27,350 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:29:27,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 16:29:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:29:27,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 16:29:27,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:29:27,479 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:29:27,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:29:27,519 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:29:27,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:29:27,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719756222] [2022-11-16 16:29:27,520 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 16:29:27,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344822926] [2022-11-16 16:29:27,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344822926] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:29:27,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [590004807] [2022-11-16 16:29:27,542 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-16 16:29:27,543 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:29:27,547 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:29:27,553 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:29:27,553 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:29:28,564 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 41 for LOIs [2022-11-16 16:29:28,636 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:29:29,007 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '220#(and (< ~counter~0 2) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 16:29:29,007 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:29:29,007 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 16:29:29,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 5 [2022-11-16 16:29:29,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682525990] [2022-11-16 16:29:29,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 16:29:29,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:29:29,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:29:29,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:29:29,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-16 16:29:29,010 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 16:29:29,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:29:29,059 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2022-11-16 16:29:29,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:29:29,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2022-11-16 16:29:29,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:29:29,061 INFO L225 Difference]: With dead ends: 31 [2022-11-16 16:29:29,061 INFO L226 Difference]: Without dead ends: 17 [2022-11-16 16:29:29,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-16 16:29:29,069 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 14 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:29:29,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 19 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:29:29,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-16 16:29:29,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-16 16:29:29,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 16:29:29,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2022-11-16 16:29:29,085 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 15 [2022-11-16 16:29:29,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:29:29,086 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2022-11-16 16:29:29,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 16:29:29,086 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2022-11-16 16:29:29,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 16:29:29,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:29:29,088 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:29:29,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 16:29:29,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:29:29,293 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:29:29,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:29:29,293 INFO L85 PathProgramCache]: Analyzing trace with hash 927087193, now seen corresponding path program 1 times [2022-11-16 16:29:29,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:29:29,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042404528] [2022-11-16 16:29:29,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:29:29,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:29:29,306 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 16:29:29,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446653021] [2022-11-16 16:29:29,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:29:29,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:29:29,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:29:29,312 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:29:29,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 16:29:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 16:29:29,382 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 16:29:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 16:29:29,422 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 16:29:29,422 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 16:29:29,423 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 16:29:29,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 16:29:29,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-16 16:29:29,633 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-16 16:29:29,637 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 16:29:29,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 04:29:29 BoogieIcfgContainer [2022-11-16 16:29:29,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 16:29:29,669 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 16:29:29,670 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 16:29:29,670 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 16:29:29,670 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:29:26" (3/4) ... [2022-11-16 16:29:29,672 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 16:29:29,704 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 16:29:29,704 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 16:29:29,705 INFO L158 Benchmark]: Toolchain (without parser) took 4099.33ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 85.5MB in the beginning and 79.4MB in the end (delta: 6.1MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. [2022-11-16 16:29:29,706 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 123.7MB. Free memory was 102.6MB in the beginning and 102.5MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:29:29,706 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.99ms. Allocated memory is still 123.7MB. Free memory was 85.4MB in the beginning and 97.9MB in the end (delta: -12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 16:29:29,707 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.12ms. Allocated memory is still 123.7MB. Free memory was 97.9MB in the beginning and 96.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:29:29,707 INFO L158 Benchmark]: Boogie Preprocessor took 19.16ms. Allocated memory is still 123.7MB. Free memory was 96.3MB in the beginning and 95.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:29:29,707 INFO L158 Benchmark]: RCFGBuilder took 424.80ms. Allocated memory is still 123.7MB. Free memory was 95.2MB in the beginning and 82.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 16:29:29,708 INFO L158 Benchmark]: TraceAbstraction took 3281.63ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 82.1MB in the beginning and 81.5MB in the end (delta: 560.3kB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-11-16 16:29:29,708 INFO L158 Benchmark]: Witness Printer took 35.28ms. Allocated memory is still 148.9MB. Free memory was 81.5MB in the beginning and 79.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:29:29,711 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 123.7MB. Free memory was 102.6MB in the beginning and 102.5MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.99ms. Allocated memory is still 123.7MB. Free memory was 85.4MB in the beginning and 97.9MB in the end (delta: -12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.12ms. Allocated memory is still 123.7MB. Free memory was 97.9MB in the beginning and 96.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.16ms. Allocated memory is still 123.7MB. Free memory was 96.3MB in the beginning and 95.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 424.80ms. Allocated memory is still 123.7MB. Free memory was 95.2MB in the beginning and 82.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3281.63ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 82.1MB in the beginning and 81.5MB in the end (delta: 560.3kB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. * Witness Printer took 35.28ms. Allocated memory is still 148.9MB. Free memory was 81.5MB in the beginning and 79.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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, v=0, X=4, x=0, y=0, Y=2] [L31] EXPR counter++ VAL [counter=1, counter++=0, v=0, X=4, x=0, y=0, Y=2] [L31] COND TRUE counter++<1 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=1, v=0, x=0, x=0, X=4, x=0, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=1, v=0, x=0, x=0, X=4, x=0, Y=2, y=0] [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, v=-4, x=1, X=4, x=0, x=0, Y=2, y=1, y++=0] [L31] EXPR counter++ VAL [counter=2, counter++=1, v=-4, x=1, x=0, x=0, X=4, Y=2, y=1, y++=0] [L31] COND FALSE !(counter++<1) [L47] xy = (long long) x*y [L48] yx = (long long) Y*x VAL [counter=2, v=-4, x=1, x=1, X=4, x=2, Y=2, y=1, y++=0] [L49] CALL __VERIFIER_assert(2*yx - 2*xy - X + (long long) 2*Y - v + 2*y == 0) VAL [\old(cond)=0, counter=2] [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=2] [L16] reach_error() VAL [\old(cond)=0, cond=0, counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.1s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 56 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 67 IncrementalHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 19 mSDtfsCounter, 67 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=1, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 109 SizeOfPredicates, 4 NumberOfNonLiveVariables, 132 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 8/10 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! [2022-11-16 16:29:29,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7337371b-8778-4e3b-b5a7-6e4bf041f113/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE