./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id2_b5_o10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0845094b-e9ec-49f9-8082-c07f2d9345d8/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0845094b-e9ec-49f9-8082-c07f2d9345d8/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0845094b-e9ec-49f9-8082-c07f2d9345d8/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0845094b-e9ec-49f9-8082-c07f2d9345d8/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_b5_o10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0845094b-e9ec-49f9-8082-c07f2d9345d8/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0845094b-e9ec-49f9-8082-c07f2d9345d8/bin/utaipan-G1rejxKTta --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 8c08a983a7c0b08f878bb6cfb5a8d37d856d7302f69f84382c3f724537bcbd1e --- 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-dbf71c6-m [2022-10-17 17:14:55,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:14:55,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:14:55,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:14:55,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:14:55,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:14:55,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:14:55,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:14:55,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:14:55,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:14:55,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:14:55,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:14:55,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:14:55,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:14:55,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:14:55,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:14:55,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:14:55,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:14:55,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:14:55,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:14:55,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:14:55,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:14:55,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:14:55,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:14:55,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:14:55,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:14:55,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:14:55,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:14:55,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:14:55,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:14:55,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:14:55,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:14:55,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:14:55,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:14:55,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:14:55,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:14:55,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:14:55,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:14:55,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:14:55,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:14:55,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:14:55,492 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0845094b-e9ec-49f9-8082-c07f2d9345d8/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:14:55,540 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:14:55,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:14:55,541 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:14:55,541 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:14:55,542 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:14:55,542 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:14:55,542 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:14:55,542 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:14:55,543 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:14:55,543 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:14:55,544 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:14:55,544 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:14:55,545 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:14:55,545 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:14:55,545 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:14:55,545 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:14:55,546 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:14:55,546 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:14:55,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:14:55,547 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:14:55,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:14:55,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:14:55,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:14:55,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:14:55,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:14:55,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:14:55,555 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:14:55,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:14:55,556 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:14:55,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:14:55,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:14:55,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:14:55,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:14:55,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:14:55,558 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:14:55,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:14:55,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:14:55,558 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:14:55,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:14:55,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:14:55,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:14:55,559 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_0845094b-e9ec-49f9-8082-c07f2d9345d8/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0845094b-e9ec-49f9-8082-c07f2d9345d8/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c08a983a7c0b08f878bb6cfb5a8d37d856d7302f69f84382c3f724537bcbd1e [2022-10-17 17:14:55,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:14:55,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:14:55,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:14:55,848 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:14:55,849 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:14:55,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0845094b-e9ec-49f9-8082-c07f2d9345d8/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/recursive-simple/id2_b5_o10.c [2022-10-17 17:14:55,928 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0845094b-e9ec-49f9-8082-c07f2d9345d8/bin/utaipan-G1rejxKTta/data/76b9dcf9e/9c760c6b6bb54d7eb3f9173a90857a19/FLAGaef36f95c [2022-10-17 17:14:56,375 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:14:56,376 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0845094b-e9ec-49f9-8082-c07f2d9345d8/sv-benchmarks/c/recursive-simple/id2_b5_o10.c [2022-10-17 17:14:56,382 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0845094b-e9ec-49f9-8082-c07f2d9345d8/bin/utaipan-G1rejxKTta/data/76b9dcf9e/9c760c6b6bb54d7eb3f9173a90857a19/FLAGaef36f95c [2022-10-17 17:14:56,754 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0845094b-e9ec-49f9-8082-c07f2d9345d8/bin/utaipan-G1rejxKTta/data/76b9dcf9e/9c760c6b6bb54d7eb3f9173a90857a19 [2022-10-17 17:14:56,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:14:56,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:14:56,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:14:56,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:14:56,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:14:56,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:14:56" (1/1) ... [2022-10-17 17:14:56,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d3d3651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:56, skipping insertion in model container [2022-10-17 17:14:56,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:14:56" (1/1) ... [2022-10-17 17:14:56,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:14:56,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:14:57,003 WARN L230 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_0845094b-e9ec-49f9-8082-c07f2d9345d8/sv-benchmarks/c/recursive-simple/id2_b5_o10.c[773,786] [2022-10-17 17:14:57,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:14:57,016 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:14:57,033 WARN L230 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_0845094b-e9ec-49f9-8082-c07f2d9345d8/sv-benchmarks/c/recursive-simple/id2_b5_o10.c[773,786] [2022-10-17 17:14:57,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:14:57,048 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:14:57,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:57 WrapperNode [2022-10-17 17:14:57,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:14:57,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:14:57,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:14:57,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:14:57,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:57" (1/1) ... [2022-10-17 17:14:57,065 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:57" (1/1) ... [2022-10-17 17:14:57,081 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-10-17 17:14:57,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:14:57,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:14:57,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:14:57,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:14:57,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:57" (1/1) ... [2022-10-17 17:14:57,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:57" (1/1) ... [2022-10-17 17:14:57,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:57" (1/1) ... [2022-10-17 17:14:57,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:57" (1/1) ... [2022-10-17 17:14:57,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:57" (1/1) ... [2022-10-17 17:14:57,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:57" (1/1) ... [2022-10-17 17:14:57,099 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:57" (1/1) ... [2022-10-17 17:14:57,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:57" (1/1) ... [2022-10-17 17:14:57,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:14:57,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:14:57,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:14:57,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:14:57,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:57" (1/1) ... [2022-10-17 17:14:57,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:14:57,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0845094b-e9ec-49f9-8082-c07f2d9345d8/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:14:57,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0845094b-e9ec-49f9-8082-c07f2d9345d8/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:14:57,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0845094b-e9ec-49f9-8082-c07f2d9345d8/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:14:57,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:14:57,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:14:57,189 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2022-10-17 17:14:57,190 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2022-10-17 17:14:57,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:14:57,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:14:57,190 INFO L130 BoogieDeclarations]: Found specification of procedure id [2022-10-17 17:14:57,190 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2022-10-17 17:14:57,275 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:14:57,278 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:14:57,411 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:14:57,450 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:14:57,451 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:14:57,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:14:57 BoogieIcfgContainer [2022-10-17 17:14:57,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:14:57,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:14:57,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:14:57,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:14:57,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:14:56" (1/3) ... [2022-10-17 17:14:57,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ca4b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:14:57, skipping insertion in model container [2022-10-17 17:14:57,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:57" (2/3) ... [2022-10-17 17:14:57,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ca4b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:14:57, skipping insertion in model container [2022-10-17 17:14:57,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:14:57" (3/3) ... [2022-10-17 17:14:57,464 INFO L112 eAbstractionObserver]: Analyzing ICFG id2_b5_o10.c [2022-10-17 17:14:57,486 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:14:57,486 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:14:57,541 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:14:57,549 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;@4e2231df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:14:57,550 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:14:57,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 17:14:57,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 17:14:57,565 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:14:57,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:14:57,566 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:14:57,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:14:57,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1546332850, now seen corresponding path program 1 times [2022-10-17 17:14:57,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:14:57,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240759402] [2022-10-17 17:14:57,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:14:57,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:14:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:14:57,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:14:57,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:14:57,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240759402] [2022-10-17 17:14:57,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240759402] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:14:57,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:14:57,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 17:14:57,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996561171] [2022-10-17 17:14:57,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:14:58,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:14:58,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:14:58,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:14:58,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:14:58,038 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 17:14:58,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:14:58,101 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-10-17 17:14:58,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:14:58,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2022-10-17 17:14:58,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:14:58,113 INFO L225 Difference]: With dead ends: 30 [2022-10-17 17:14:58,114 INFO L226 Difference]: Without dead ends: 20 [2022-10-17 17:14:58,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:14:58,121 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:14:58,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 60 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:14:58,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-10-17 17:14:58,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-10-17 17:14:58,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-17 17:14:58,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-10-17 17:14:58,166 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 9 [2022-10-17 17:14:58,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:14:58,167 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-10-17 17:14:58,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 17:14:58,168 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-10-17 17:14:58,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 17:14:58,170 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:14:58,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:14:58,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:14:58,171 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:14:58,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:14:58,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1895588019, now seen corresponding path program 1 times [2022-10-17 17:14:58,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:14:58,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675505102] [2022-10-17 17:14:58,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:14:58,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:14:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:14:58,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:14:58,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:14:58,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675505102] [2022-10-17 17:14:58,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675505102] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:14:58,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:14:58,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 17:14:58,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962696881] [2022-10-17 17:14:58,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:14:58,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 17:14:58,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:14:58,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 17:14:58,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:14:58,583 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 17:14:58,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:14:58,652 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2022-10-17 17:14:58,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 17:14:58,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2022-10-17 17:14:58,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:14:58,655 INFO L225 Difference]: With dead ends: 29 [2022-10-17 17:14:58,655 INFO L226 Difference]: Without dead ends: 25 [2022-10-17 17:14:58,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:14:58,658 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:14:58,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:14:58,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-10-17 17:14:58,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-10-17 17:14:58,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-17 17:14:58,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-10-17 17:14:58,673 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2022-10-17 17:14:58,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:14:58,676 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-10-17 17:14:58,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 17:14:58,677 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-10-17 17:14:58,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-17 17:14:58,682 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:14:58,682 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:14:58,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:14:58,683 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:14:58,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:14:58,685 INFO L85 PathProgramCache]: Analyzing trace with hash -523916524, now seen corresponding path program 1 times [2022-10-17 17:14:58,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:14:58,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091505795] [2022-10-17 17:14:58,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:14:58,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:14:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:14:59,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 17:14:59,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:14:59,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091505795] [2022-10-17 17:14:59,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091505795] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:14:59,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341057804] [2022-10-17 17:14:59,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:14:59,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:14:59,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0845094b-e9ec-49f9-8082-c07f2d9345d8/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:14:59,236 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0845094b-e9ec-49f9-8082-c07f2d9345d8/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:14:59,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0845094b-e9ec-49f9-8082-c07f2d9345d8/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:14:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:14:59,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 17:14:59,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:14:59,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 17:14:59,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:14:59,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341057804] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:14:59,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 17:14:59,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-10-17 17:14:59,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494469341] [2022-10-17 17:14:59,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:14:59,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:14:59,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:14:59,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:14:59,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-10-17 17:14:59,493 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-17 17:14:59,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:14:59,549 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-10-17 17:14:59,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:14:59,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2022-10-17 17:14:59,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:14:59,551 INFO L225 Difference]: With dead ends: 23 [2022-10-17 17:14:59,551 INFO L226 Difference]: Without dead ends: 0 [2022-10-17 17:14:59,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-10-17 17:14:59,555 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:14:59,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:14:59,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-17 17:14:59,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-17 17:14:59,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:14:59,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-17 17:14:59,561 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2022-10-17 17:14:59,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:14:59,561 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 17:14:59,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-17 17:14:59,562 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-17 17:14:59,562 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-17 17:14:59,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 17:14:59,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0845094b-e9ec-49f9-8082-c07f2d9345d8/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:14:59,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0845094b-e9ec-49f9-8082-c07f2d9345d8/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:14:59,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-10-17 17:14:59,847 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-10-17 17:14:59,847 INFO L899 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2022-10-17 17:14:59,847 INFO L899 garLoopResultBuilder]: For program point id2EXIT(lines 16 21) no Hoare annotation was computed. [2022-10-17 17:14:59,847 INFO L902 garLoopResultBuilder]: At program point id2ENTRY(lines 16 21) the Hoare annotation is: true [2022-10-17 17:14:59,847 INFO L899 garLoopResultBuilder]: For program point id2FINAL(lines 16 21) no Hoare annotation was computed. [2022-10-17 17:14:59,847 INFO L902 garLoopResultBuilder]: At program point L18(line 18) the Hoare annotation is: true [2022-10-17 17:14:59,848 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-10-17 17:14:59,848 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-10-17 17:14:59,848 INFO L899 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2022-10-17 17:14:59,848 INFO L899 garLoopResultBuilder]: For program point L26(lines 26 28) no Hoare annotation was computed. [2022-10-17 17:14:59,848 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2022-10-17 17:14:59,848 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-10-17 17:14:59,849 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2022-10-17 17:14:59,849 INFO L899 garLoopResultBuilder]: For program point L23(lines 23 29) no Hoare annotation was computed. [2022-10-17 17:14:59,849 INFO L899 garLoopResultBuilder]: For program point idFINAL(lines 9 14) no Hoare annotation was computed. [2022-10-17 17:14:59,849 INFO L902 garLoopResultBuilder]: At program point L11(line 11) the Hoare annotation is: true [2022-10-17 17:14:59,849 INFO L899 garLoopResultBuilder]: For program point idEXIT(lines 9 14) no Hoare annotation was computed. [2022-10-17 17:14:59,849 INFO L899 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2022-10-17 17:14:59,849 INFO L899 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2022-10-17 17:14:59,850 INFO L902 garLoopResultBuilder]: At program point idENTRY(lines 9 14) the Hoare annotation is: true [2022-10-17 17:14:59,853 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-17 17:14:59,856 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 17:14:59,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 05:14:59 BoogieIcfgContainer [2022-10-17 17:14:59,861 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 17:14:59,861 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:14:59,862 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:14:59,862 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:14:59,862 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:14:57" (3/4) ... [2022-10-17 17:14:59,866 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-10-17 17:14:59,872 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id2 [2022-10-17 17:14:59,873 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2022-10-17 17:14:59,877 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-10-17 17:14:59,878 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-10-17 17:14:59,878 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-10-17 17:14:59,878 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-10-17 17:14:59,912 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0845094b-e9ec-49f9-8082-c07f2d9345d8/bin/utaipan-G1rejxKTta/witness.graphml [2022-10-17 17:14:59,912 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:14:59,913 INFO L158 Benchmark]: Toolchain (without parser) took 3153.70ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 58.5MB in the beginning and 41.2MB in the end (delta: 17.2MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. [2022-10-17 17:14:59,913 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 86.0MB. Free memory is still 57.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:14:59,913 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.54ms. Allocated memory is still 86.0MB. Free memory was 58.2MB in the beginning and 60.5MB in the end (delta: -2.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 17:14:59,914 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.63ms. Allocated memory is still 86.0MB. Free memory was 60.5MB in the beginning and 59.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:14:59,914 INFO L158 Benchmark]: Boogie Preprocessor took 20.10ms. Allocated memory is still 86.0MB. Free memory was 59.1MB in the beginning and 58.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:14:59,915 INFO L158 Benchmark]: RCFGBuilder took 350.83ms. Allocated memory is still 86.0MB. Free memory was 58.0MB in the beginning and 47.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 17:14:59,915 INFO L158 Benchmark]: TraceAbstraction took 2404.87ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 46.9MB in the beginning and 43.3MB in the end (delta: 3.6MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2022-10-17 17:14:59,916 INFO L158 Benchmark]: Witness Printer took 50.62ms. Allocated memory is still 104.9MB. Free memory was 43.3MB in the beginning and 41.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:14:59,918 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 86.0MB. Free memory is still 57.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.54ms. Allocated memory is still 86.0MB. Free memory was 58.2MB in the beginning and 60.5MB in the end (delta: -2.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.63ms. Allocated memory is still 86.0MB. Free memory was 60.5MB in the beginning and 59.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.10ms. Allocated memory is still 86.0MB. Free memory was 59.1MB in the beginning and 58.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 350.83ms. Allocated memory is still 86.0MB. Free memory was 58.0MB in the beginning and 47.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2404.87ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 46.9MB in the beginning and 43.3MB in the end (delta: 3.6MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. * Witness Printer took 50.62ms. Allocated memory is still 104.9MB. Free memory was 43.3MB in the beginning and 41.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 27]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 212 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 186 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 48 mSDtfsCounter, 72 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=2, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 5 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 194 SizeOfPredicates, 1 NumberOfNonLiveVariables, 69 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 6/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-10-17 17:14:59,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0845094b-e9ec-49f9-8082-c07f2d9345d8/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE