./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh --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 d8ee33f278cd93a3b1e0d551730c6407889b70e338ebc3c857541220d9b0f75f --- 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-2329fc7 [2022-12-14 14:12:02,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:12:02,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:12:02,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:12:02,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:12:02,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:12:02,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:12:02,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:12:02,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:12:02,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:12:02,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:12:02,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:12:02,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:12:02,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:12:02,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:12:02,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:12:02,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:12:02,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:12:02,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:12:02,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:12:02,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:12:02,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:12:02,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:12:02,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:12:02,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:12:02,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:12:02,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:12:02,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:12:02,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:12:02,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:12:02,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:12:02,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:12:02,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:12:02,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:12:02,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:12:02,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:12:02,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:12:02,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:12:02,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:12:02,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:12:02,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:12:02,370 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 14:12:02,386 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:12:02,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:12:02,386 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:12:02,386 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:12:02,387 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:12:02,387 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:12:02,387 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:12:02,387 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:12:02,387 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:12:02,387 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:12:02,387 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:12:02,388 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:12:02,388 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:12:02,388 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:12:02,388 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:12:02,388 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:12:02,388 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:12:02,388 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:12:02,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:12:02,389 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:12:02,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:12:02,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:12:02,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:12:02,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:12:02,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:12:02,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:12:02,390 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:12:02,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:12:02,390 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:12:02,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:12:02,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:12:02,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:12:02,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:12:02,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:12:02,391 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:12:02,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:12:02,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:12:02,391 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:12:02,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:12:02,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:12:02,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:12:02,391 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_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8ee33f278cd93a3b1e0d551730c6407889b70e338ebc3c857541220d9b0f75f [2022-12-14 14:12:02,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:12:02,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:12:02,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:12:02,587 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:12:02,588 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:12:02,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c [2022-12-14 14:12:05,232 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:12:05,381 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:12:05,381 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c [2022-12-14 14:12:05,386 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/data/5928e8cf5/bd8afc29a8404a138a92f9b453c7dcb4/FLAG2f5658240 [2022-12-14 14:12:05,396 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/data/5928e8cf5/bd8afc29a8404a138a92f9b453c7dcb4 [2022-12-14 14:12:05,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:12:05,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:12:05,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:12:05,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:12:05,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:12:05,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b1d775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05, skipping insertion in model container [2022-12-14 14:12:05,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:12:05,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:12:05,522 WARN L237 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_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c[597,610] [2022-12-14 14:12:05,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:12:05,542 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:12:05,550 WARN L237 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_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c[597,610] [2022-12-14 14:12:05,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:12:05,565 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:12:05,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05 WrapperNode [2022-12-14 14:12:05,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:12:05,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:12:05,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:12:05,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:12:05,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,587 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2022-12-14 14:12:05,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:12:05,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:12:05,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:12:05,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:12:05,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,600 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:12:05,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:12:05,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:12:05,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:12:05,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (1/1) ... [2022-12-14 14:12:05,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:12:05,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:12:05,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:12:05,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:12:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:12:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:12:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:12:05,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:12:05,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 14:12:05,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 14:12:05,709 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:12:05,711 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:12:05,806 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:12:05,832 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:12:05,832 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 14:12:05,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:12:05 BoogieIcfgContainer [2022-12-14 14:12:05,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:12:05,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:12:05,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:12:05,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:12:05,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:12:05" (1/3) ... [2022-12-14 14:12:05,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab1fb5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:12:05, skipping insertion in model container [2022-12-14 14:12:05,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:12:05" (2/3) ... [2022-12-14 14:12:05,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab1fb5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:12:05, skipping insertion in model container [2022-12-14 14:12:05,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:12:05" (3/3) ... [2022-12-14 14:12:05,840 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound10.c [2022-12-14 14:12:05,855 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:12:05,855 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 14:12:05,888 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:12:05,892 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;@2f13c19e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:12:05,892 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 14:12:05,895 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) [2022-12-14 14:12:05,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 14:12:05,901 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:12:05,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:12:05,902 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:12:05,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:12:05,906 INFO L85 PathProgramCache]: Analyzing trace with hash -26250642, now seen corresponding path program 1 times [2022-12-14 14:12:05,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:12:05,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14871043] [2022-12-14 14:12:05,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:05,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:12:05,979 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 14:12:05,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1121187954] [2022-12-14 14:12:05,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:05,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:12:05,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:12:05,981 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:12:05,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 14:12:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:12:06,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 14:12:06,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:12:06,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:12:06,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:12:06,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:12:06,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14871043] [2022-12-14 14:12:06,173 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 14:12:06,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121187954] [2022-12-14 14:12:06,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121187954] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:12:06,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:12:06,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 14:12:06,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917376220] [2022-12-14 14:12:06,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:12:06,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:12:06,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:12:06,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:12:06,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:12:06,200 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) [2022-12-14 14:12:06,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:12:06,303 INFO L93 Difference]: Finished difference Result 42 states and 58 transitions. [2022-12-14 14:12:06,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:12:06,306 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 [2022-12-14 14:12:06,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:12:06,313 INFO L225 Difference]: With dead ends: 42 [2022-12-14 14:12:06,313 INFO L226 Difference]: Without dead ends: 21 [2022-12-14 14:12:06,316 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 [2022-12-14 14:12:06,319 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 12 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-12-14 14:12:06,320 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] [2022-12-14 14:12:06,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-12-14 14:12:06,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-12-14 14:12:06,352 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) [2022-12-14 14:12:06,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-12-14 14:12:06,354 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 7 [2022-12-14 14:12:06,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:12:06,355 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-12-14 14:12:06,355 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) [2022-12-14 14:12:06,355 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-12-14 14:12:06,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 14:12:06,356 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:12:06,356 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:12:06,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 14:12:06,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 14:12:06,558 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:12:06,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:12:06,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1971909778, now seen corresponding path program 1 times [2022-12-14 14:12:06,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:12:06,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609643386] [2022-12-14 14:12:06,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:06,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:12:06,598 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 14:12:06,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1901452018] [2022-12-14 14:12:06,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:06,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:12:06,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:12:06,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:12:06,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 14:12:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:12:06,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 14:12:06,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:12:06,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:12:06,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:12:07,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:12:07,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:12:07,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609643386] [2022-12-14 14:12:07,230 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 14:12:07,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901452018] [2022-12-14 14:12:07,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901452018] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:12:07,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2115255634] [2022-12-14 14:12:07,247 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 14:12:07,247 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:12:07,249 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:12:07,253 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:12:07,254 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:12:07,692 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 42 for LOIs [2022-12-14 14:12:07,736 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:12:08,097 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '229#(and (< ~counter~0 11) (= |__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 [2022-12-14 14:12:08,097 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:12:08,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 14:12:08,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2022-12-14 14:12:08,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28218075] [2022-12-14 14:12:08,098 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 14:12:08,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 14:12:08,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:12:08,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 14:12:08,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-12-14 14:12:08,101 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 14:12:08,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:12:08,310 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-12-14 14:12:08,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 14:12:08,311 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2022-12-14 14:12:08,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:12:08,312 INFO L225 Difference]: With dead ends: 35 [2022-12-14 14:12:08,312 INFO L226 Difference]: Without dead ends: 31 [2022-12-14 14:12:08,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2022-12-14 14:12:08,313 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 29 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:12:08,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 44 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:12:08,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-14 14:12:08,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2022-12-14 14:12:08,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 14:12:08,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-12-14 14:12:08,322 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 15 [2022-12-14 14:12:08,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:12:08,322 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-12-14 14:12:08,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 14:12:08,323 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-12-14 14:12:08,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 14:12:08,323 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:12:08,323 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:12:08,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 14:12:08,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:12:08,524 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:12:08,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:12:08,525 INFO L85 PathProgramCache]: Analyzing trace with hash 927087193, now seen corresponding path program 1 times [2022-12-14 14:12:08,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:12:08,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145802743] [2022-12-14 14:12:08,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:08,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:12:08,531 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 14:12:08,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453713016] [2022-12-14 14:12:08,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:08,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:12:08,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:12:08,533 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:12:08,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 14:12:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:12:08,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 14:12:08,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:12:08,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:12:08,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:12:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:12:08,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:12:08,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145802743] [2022-12-14 14:12:08,609 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 14:12:08,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453713016] [2022-12-14 14:12:08,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453713016] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:12:08,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [915214937] [2022-12-14 14:12:08,611 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 14:12:08,611 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:12:08,612 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:12:08,612 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:12:08,612 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:12:08,939 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 80 for LOIs [2022-12-14 14:12:09,035 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:12:11,148 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '422#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2022-12-14 14:12:11,149 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:12:11,149 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 14:12:11,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2022-12-14 14:12:11,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60128198] [2022-12-14 14:12:11,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 14:12:11,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 14:12:11,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:12:11,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 14:12:11,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-12-14 14:12:11,151 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 14:12:11,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:12:11,223 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2022-12-14 14:12:11,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 14:12:11,223 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-12-14 14:12:11,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:12:11,224 INFO L225 Difference]: With dead ends: 59 [2022-12-14 14:12:11,224 INFO L226 Difference]: Without dead ends: 53 [2022-12-14 14:12:11,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-12-14 14:12:11,225 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 28 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:12:11,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 61 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:12:11,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-12-14 14:12:11,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2022-12-14 14:12:11,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 14:12:11,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-12-14 14:12:11,238 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 16 [2022-12-14 14:12:11,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:12:11,239 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-12-14 14:12:11,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 14:12:11,239 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-12-14 14:12:11,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 14:12:11,240 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:12:11,240 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:12:11,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 14:12:11,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:12:11,440 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:12:11,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:12:11,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1587911935, now seen corresponding path program 1 times [2022-12-14 14:12:11,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:12:11,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699824842] [2022-12-14 14:12:11,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:11,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:12:11,450 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 14:12:11,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1614448750] [2022-12-14 14:12:11,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:11,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:12:11,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:12:11,452 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:12:11,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 14:12:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:12:11,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-14 14:12:11,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:12:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:12:11,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:12:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:12:12,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:12:12,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699824842] [2022-12-14 14:12:12,196 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 14:12:12,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614448750] [2022-12-14 14:12:12,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614448750] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:12:12,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1884274649] [2022-12-14 14:12:12,198 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 14:12:12,199 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:12:12,199 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:12:12,199 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:12:12,199 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:12:12,502 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 86 for LOIs [2022-12-14 14:12:12,591 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:12:31,490 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '718#(and (< ~counter~0 11) (= |__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 [2022-12-14 14:12:31,490 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:12:31,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 14:12:31,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2022-12-14 14:12:31,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572574730] [2022-12-14 14:12:31,491 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 14:12:31,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-14 14:12:31,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:12:31,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-14 14:12:31,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=649, Unknown=3, NotChecked=0, Total=756 [2022-12-14 14:12:31,492 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 18 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 16 states have internal predecessors, (29), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 14:12:32,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:12:32,385 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2022-12-14 14:12:32,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 14:12:32,385 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 16 states have internal predecessors, (29), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 22 [2022-12-14 14:12:32,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:12:32,386 INFO L225 Difference]: With dead ends: 49 [2022-12-14 14:12:32,386 INFO L226 Difference]: Without dead ends: 41 [2022-12-14 14:12:32,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=171, Invalid=1016, Unknown=3, NotChecked=0, Total=1190 [2022-12-14 14:12:32,387 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 28 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 14:12:32,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 49 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 14:12:32,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-12-14 14:12:32,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-12-14 14:12:32,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 14:12:32,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2022-12-14 14:12:32,396 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 22 [2022-12-14 14:12:32,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:12:32,396 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2022-12-14 14:12:32,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 16 states have internal predecessors, (29), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 14:12:32,396 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2022-12-14 14:12:32,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-14 14:12:32,397 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:12:32,397 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-12-14 14:12:32,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 14:12:32,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:12:32,599 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:12:32,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:12:32,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1355163283, now seen corresponding path program 2 times [2022-12-14 14:12:32,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:12:32,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570097828] [2022-12-14 14:12:32,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:32,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:12:32,625 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 14:12:32,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124147004] [2022-12-14 14:12:32,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:12:32,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:12:32,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:12:32,629 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:12:32,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 14:12:32,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 14:12:32,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:12:32,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 14:12:32,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:12:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:12:32,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:12:33,080 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 14:12:33,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:12:33,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570097828] [2022-12-14 14:12:33,081 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 14:12:33,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124147004] [2022-12-14 14:12:33,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124147004] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:12:33,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [911021695] [2022-12-14 14:12:33,083 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 14:12:33,083 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:12:33,083 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:12:33,084 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:12:33,084 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:12:33,399 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 80 for LOIs [2022-12-14 14:12:33,484 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:12:35,210 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1113#(and (= |__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 [2022-12-14 14:12:35,210 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:12:35,210 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 14:12:35,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-12-14 14:12:35,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850025255] [2022-12-14 14:12:35,210 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 14:12:35,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 14:12:35,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:12:35,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 14:12:35,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-12-14 14:12:35,212 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 14:12:35,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:12:35,657 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2022-12-14 14:12:35,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 14:12:35,658 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 40 [2022-12-14 14:12:35,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:12:35,659 INFO L225 Difference]: With dead ends: 95 [2022-12-14 14:12:35,659 INFO L226 Difference]: Without dead ends: 89 [2022-12-14 14:12:35,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=216, Invalid=840, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 14:12:35,660 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 32 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:12:35,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 104 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:12:35,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-12-14 14:12:35,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-12-14 14:12:35,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.0149253731343284) internal successors, (68), 67 states have internal predecessors, (68), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 14:12:35,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2022-12-14 14:12:35,681 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 40 [2022-12-14 14:12:35,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:12:35,681 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2022-12-14 14:12:35,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 14:12:35,682 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2022-12-14 14:12:35,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-14 14:12:35,683 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:12:35,684 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2022-12-14 14:12:35,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 14:12:35,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:12:35,884 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:12:35,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:12:35,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1093149589, now seen corresponding path program 3 times [2022-12-14 14:12:35,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:12:35,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451240141] [2022-12-14 14:12:35,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:12:35,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:12:35,896 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 14:12:35,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485471228] [2022-12-14 14:12:35,896 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 14:12:35,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:12:35,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:12:35,897 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:12:35,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 14:12:36,020 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 14:12:36,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-12-14 14:12:36,021 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 14:12:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:12:36,090 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 14:12:36,091 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 14:12:36,091 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 14:12:36,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 14:12:36,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 14:12:36,303 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2022-12-14 14:12:36,313 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:12:36,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:12:36 BoogieIcfgContainer [2022-12-14 14:12:36,362 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:12:36,363 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:12:36,363 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:12:36,363 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:12:36,363 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:12:05" (3/4) ... [2022-12-14 14:12:36,365 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 14:12:36,404 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 14:12:36,404 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:12:36,404 INFO L158 Benchmark]: Toolchain (without parser) took 31005.51ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 98.9MB in the beginning and 113.6MB in the end (delta: -14.7MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2022-12-14 14:12:36,405 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 96.5MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:12:36,405 INFO L158 Benchmark]: CACSL2BoogieTranslator took 165.54ms. Allocated memory is still 132.1MB. Free memory was 98.9MB in the beginning and 88.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 14:12:36,405 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.13ms. Allocated memory is still 132.1MB. Free memory was 88.4MB in the beginning and 86.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:12:36,405 INFO L158 Benchmark]: Boogie Preprocessor took 13.48ms. Allocated memory is still 132.1MB. Free memory was 86.9MB in the beginning and 85.9MB in the end (delta: 938.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:12:36,405 INFO L158 Benchmark]: RCFGBuilder took 231.55ms. Allocated memory is still 132.1MB. Free memory was 85.5MB in the beginning and 73.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 14:12:36,406 INFO L158 Benchmark]: TraceAbstraction took 30526.99ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 72.9MB in the beginning and 118.9MB in the end (delta: -45.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:12:36,406 INFO L158 Benchmark]: Witness Printer took 41.14ms. Allocated memory is still 159.4MB. Free memory was 118.9MB in the beginning and 113.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 14:12:36,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 96.5MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 165.54ms. Allocated memory is still 132.1MB. Free memory was 98.9MB in the beginning and 88.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.13ms. Allocated memory is still 132.1MB. Free memory was 88.4MB in the beginning and 86.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.48ms. Allocated memory is still 132.1MB. Free memory was 86.9MB in the beginning and 85.9MB in the end (delta: 938.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 231.55ms. Allocated memory is still 132.1MB. Free memory was 85.5MB in the beginning and 73.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 30526.99ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 72.9MB in the beginning and 118.9MB in the end (delta: -45.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 41.14ms. Allocated memory is still 159.4MB. Free memory was 118.9MB in the beginning and 113.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. 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=10, x=0, X=14, Y=12, y=0] [L31] EXPR counter++ VAL [counter=1, counter++=0, v=10, x=0, X=14, y=0, Y=12] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=1, v=10, x=0, X=14, x=0, x=0, y=0, Y=12] [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=10, X=14, x=0, x=0, x=0, y=0, Y=12] [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=6, x=0, x=1, X=14, x=0, Y=12, y=1, y++=0] [L31] EXPR counter++ VAL [counter=2, counter++=1, v=6, x=1, x=0, X=14, x=0, y=1, Y=12, y++=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=2, v=6, x=12, X=14, x=1, x=14, y=1, Y=12, y++=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=2] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=2, v=6, X=14, x=14, x=1, x=12, Y=12, y=1, 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=2, v=2, x=14, x=12, x=2, X=14, Y=12, y=2, y++=0] [L31] EXPR counter++ VAL [counter=3, counter++=2, v=2, x=2, X=14, x=14, x=12, Y=12, y=2, y++=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=3, v=2, x=2, X=14, x=24, x=28, y=2, Y=12, y++=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=3] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=3, v=2, x=2, X=14, x=24, x=28, Y=12, 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=3, v=-2, x=24, x=28, x=3, X=14, Y=12, y=3, y++=62] [L31] EXPR counter++ VAL [counter=4, counter++=3, v=-2, X=14, x=3, x=24, x=28, y=3, Y=12, y++=62] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=4, v=-2, x=36, x=42, x=3, X=14, y=3, Y=12, y++=62] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=4] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=4, v=-2, x=36, x=42, x=3, X=14, Y=12, y=3, y++=62] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=4, v=22, X=14, x=36, x=42, x=4, y=3, Y=12, y++=62] [L31] EXPR counter++ VAL [counter=5, counter++=4, v=22, X=14, x=42, x=4, x=36, y=3, Y=12, y++=62] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=5, v=22, x=42, X=14, x=48, x=4, y=3, Y=12, y++=62] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=5] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=5, v=22, x=4, X=14, x=42, x=48, y=3, Y=12, y++=62] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=5, v=18, X=14, x=5, x=42, x=48, Y=12, y=4, y++=0] [L31] EXPR counter++ VAL [counter=6, counter++=5, v=18, x=42, x=5, x=48, X=14, Y=12, y=4, y++=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=6, v=18, X=14, x=56, x=60, x=5, y=4, Y=12, y++=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=6] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=6, v=18, x=5, X=14, x=60, x=56, Y=12, y=4, 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=6, v=14, x=6, x=56, x=60, X=14, y=5, Y=12, y++=0] [L31] EXPR counter++ VAL [counter=7, counter++=6, v=14, x=60, X=14, x=56, x=6, Y=12, y=5, y++=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=7, v=14, x=72, x=6, x=70, X=14, y=5, Y=12, y++=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=7] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=7, v=14, X=14, x=70, x=6, x=72, Y=12, y=5, 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=7, v=10, x=72, X=14, x=7, x=70, Y=12, y=6, y++=0] [L31] EXPR counter++ VAL [counter=8, counter++=7, v=10, x=7, x=70, x=72, X=14, Y=12, y=6, y++=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=8, v=10, x=7, X=14, x=84, x=84, y=6, Y=12, y++=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=8] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=8, v=10, x=7, x=84, X=14, x=84, Y=12, y=6, 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=8, v=6, x=84, x=8, x=84, X=14, Y=12, y=7, y++=0] [L31] EXPR counter++ VAL [counter=9, counter++=8, v=6, x=84, x=8, x=84, X=14, Y=12, y=7, y++=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=9, v=6, x=8, x=96, x=98, X=14, y=7, Y=12, y++=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=9] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=9, v=6, X=14, x=96, x=98, x=8, Y=12, y=7, 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=9, v=2, x=9, X=14, x=96, x=98, y=8, Y=12, y++=0] [L31] EXPR counter++ VAL [counter=10, counter++=9, v=2, x=9, X=14, x=96, x=98, Y=12, y=8, y++=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=10, v=2, x=108, X=14, x=9, x=112, y=8, Y=12, y++=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=10] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=10, v=2, x=108, x=112, X=14, x=9, y=8, Y=12, 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=10, v=-2, x=10, x=108, X=14, x=112, Y=12, y=9, y++=0] [L31] EXPR counter++ VAL [counter=11, counter++=10, v=-2, x=112, X=14, x=10, x=108, Y=12, y=9, y++=0] [L31] COND FALSE !(counter++<10) [L47] xy = (long long) x*y [L48] yx = (long long) Y*x VAL [counter=11, v=-2, x=90, x=120, x=10, X=14, Y=12, y=9, y++=0] [L49] CALL __VERIFIER_assert(2*yx - 2*xy - X + (long long) 2*Y - v + 2*y == 0) VAL [\old(cond)=0, counter=11] [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=11] [L16] reach_error() VAL [\old(cond)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 30.4s, OverallIterations: 6, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 130 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 129 mSDsluCounter, 295 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 237 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 452 IncrementalHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 58 mSDtfsCounter, 452 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 303 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 24.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=5, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 188 NumberOfCodeBlocks, 188 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 184 ConstructedInterpolants, 0 QuantifiedInterpolants, 1246 SizeOfPredicates, 23 NumberOfNonLiveVariables, 443 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 66/170 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! [2022-12-14 14:12:36,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631dc21f-4cb6-4047-9c7b-4cb3a1be0dfe/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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