./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI --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 f78eb3bd6243e56025d38ea44716c81630a57505e69e1c5e81a8ab68f6ac9a28 --- 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-5e519f3 [2022-11-03 02:48:16,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:48:16,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:48:16,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:48:16,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:48:16,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:48:16,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:48:16,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:48:16,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:48:16,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:48:16,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:48:16,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:48:16,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:48:16,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:48:16,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:48:16,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:48:16,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:48:16,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:48:16,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:48:16,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:48:16,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:48:16,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:48:16,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:48:16,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:48:16,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:48:16,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:48:16,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:48:16,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:48:16,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:48:16,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:48:16,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:48:16,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:48:16,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:48:16,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:48:16,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:48:16,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:48:16,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:48:16,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:48:16,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:48:16,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:48:16,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:48:16,493 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:48:16,536 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:48:16,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:48:16,537 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:48:16,537 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:48:16,538 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:48:16,538 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:48:16,539 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:48:16,539 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:48:16,539 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:48:16,539 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:48:16,541 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:48:16,541 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:48:16,541 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:48:16,541 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:48:16,542 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:48:16,542 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:48:16,542 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:48:16,542 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:48:16,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:48:16,543 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:48:16,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:48:16,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:48:16,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:48:16,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:48:16,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:48:16,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:48:16,547 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:48:16,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:48:16,547 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:48:16,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:48:16,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:48:16,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:48:16,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:48:16,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:48:16,549 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:48:16,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:48:16,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:48:16,550 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:48:16,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:48:16,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:48:16,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:48:16,551 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_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f78eb3bd6243e56025d38ea44716c81630a57505e69e1c5e81a8ab68f6ac9a28 [2022-11-03 02:48:16,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:48:16,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:48:16,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:48:16,839 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:48:16,840 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:48:16,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound100.c [2022-11-03 02:48:16,916 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/data/916a429b1/0d47096d8bd441ff9d14885c5ad4919f/FLAG9224d0141 [2022-11-03 02:48:17,345 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:48:17,346 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound100.c [2022-11-03 02:48:17,352 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/data/916a429b1/0d47096d8bd441ff9d14885c5ad4919f/FLAG9224d0141 [2022-11-03 02:48:17,747 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/data/916a429b1/0d47096d8bd441ff9d14885c5ad4919f [2022-11-03 02:48:17,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:48:17,751 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:48:17,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:48:17,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:48:17,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:48:17,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:48:17" (1/1) ... [2022-11-03 02:48:17,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71649cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:17, skipping insertion in model container [2022-11-03 02:48:17,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:48:17" (1/1) ... [2022-11-03 02:48:17,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:48:17,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:48:17,976 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_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound100.c[712,725] [2022-11-03 02:48:17,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:48:18,006 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:48:18,020 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_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound100.c[712,725] [2022-11-03 02:48:18,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:48:18,045 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:48:18,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:18 WrapperNode [2022-11-03 02:48:18,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:48:18,047 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:48:18,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:48:18,047 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:48:18,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:18" (1/1) ... [2022-11-03 02:48:18,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:18" (1/1) ... [2022-11-03 02:48:18,081 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 34 [2022-11-03 02:48:18,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:48:18,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:48:18,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:48:18,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:48:18,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:18" (1/1) ... [2022-11-03 02:48:18,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:18" (1/1) ... [2022-11-03 02:48:18,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:18" (1/1) ... [2022-11-03 02:48:18,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:18" (1/1) ... [2022-11-03 02:48:18,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:18" (1/1) ... [2022-11-03 02:48:18,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:18" (1/1) ... [2022-11-03 02:48:18,117 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:18" (1/1) ... [2022-11-03 02:48:18,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:18" (1/1) ... [2022-11-03 02:48:18,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:48:18,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:48:18,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:48:18,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:48:18,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:18" (1/1) ... [2022-11-03 02:48:18,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:48:18,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:48:18,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:48:18,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:48:18,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:48:18,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:48:18,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:48:18,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:48:18,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 02:48:18,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 02:48:18,272 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:48:18,274 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:48:18,376 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:48:18,391 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:48:18,391 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:48:18,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:48:18 BoogieIcfgContainer [2022-11-03 02:48:18,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:48:18,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:48:18,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:48:18,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:48:18,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:48:17" (1/3) ... [2022-11-03 02:48:18,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a2cca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:48:18, skipping insertion in model container [2022-11-03 02:48:18,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:18" (2/3) ... [2022-11-03 02:48:18,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a2cca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:48:18, skipping insertion in model container [2022-11-03 02:48:18,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:48:18" (3/3) ... [2022-11-03 02:48:18,410 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound100.c [2022-11-03 02:48:18,435 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:48:18,435 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:48:18,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:48:18,490 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;@3ce6536b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:48:18,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:48:18,508 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:48:18,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 02:48:18,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:18,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 02:48:18,516 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:18,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:18,528 INFO L85 PathProgramCache]: Analyzing trace with hash 2109616992, now seen corresponding path program 1 times [2022-11-03 02:48:18,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:48:18,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438349077] [2022-11-03 02:48:18,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:18,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:48:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:18,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:18,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:48:18,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438349077] [2022-11-03 02:48:18,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438349077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:18,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:18,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:48:18,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827213057] [2022-11-03 02:48:18,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:18,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:48:18,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:48:18,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:48:18,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:48:18,699 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:18,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:18,720 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2022-11-03 02:48:18,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:48:18,723 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 6 [2022-11-03 02:48:18,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:18,730 INFO L225 Difference]: With dead ends: 27 [2022-11-03 02:48:18,730 INFO L226 Difference]: Without dead ends: 12 [2022-11-03 02:48:18,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:48:18,770 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:18,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:48:18,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-03 02:48:18,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-03 02:48:18,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:48:18,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-11-03 02:48:18,830 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2022-11-03 02:48:18,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:18,831 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-11-03 02:48:18,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:18,831 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-11-03 02:48:18,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 02:48:18,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:18,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:48:18,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:48:18,833 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:18,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:18,834 INFO L85 PathProgramCache]: Analyzing trace with hash 574117089, now seen corresponding path program 1 times [2022-11-03 02:48:18,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:48:18,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211640530] [2022-11-03 02:48:18,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:18,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:48:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:18,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:48:18,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211640530] [2022-11-03 02:48:18,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211640530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:18,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:18,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:48:18,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954829612] [2022-11-03 02:48:18,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:18,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:48:18,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:48:18,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:48:18,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:48:18,969 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:18,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:18,999 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-11-03 02:48:18,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:48:19,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 02:48:19,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:19,000 INFO L225 Difference]: With dead ends: 21 [2022-11-03 02:48:19,000 INFO L226 Difference]: Without dead ends: 14 [2022-11-03 02:48:19,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:48:19,003 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:19,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:48:19,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-03 02:48:19,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-03 02:48:19,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:48:19,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-11-03 02:48:19,015 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2022-11-03 02:48:19,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:19,016 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-11-03 02:48:19,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:19,016 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-11-03 02:48:19,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 02:48:19,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:19,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:48:19,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:48:19,018 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:19,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:19,018 INFO L85 PathProgramCache]: Analyzing trace with hash 575904549, now seen corresponding path program 1 times [2022-11-03 02:48:19,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:48:19,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492062512] [2022-11-03 02:48:19,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:19,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:48:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:48:19,044 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:48:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:48:19,089 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:48:19,089 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:48:19,090 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:48:19,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:48:19,097 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-03 02:48:19,100 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:48:19,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:48:19 BoogieIcfgContainer [2022-11-03 02:48:19,120 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:48:19,121 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:48:19,121 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:48:19,121 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:48:19,122 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:48:18" (3/4) ... [2022-11-03 02:48:19,124 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 02:48:19,124 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:48:19,125 INFO L158 Benchmark]: Toolchain (without parser) took 1374.17ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 53.1MB in the beginning and 73.2MB in the end (delta: -20.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:48:19,125 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 90.2MB. Free memory is still 70.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:48:19,126 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.69ms. Allocated memory is still 90.2MB. Free memory was 53.0MB in the beginning and 66.4MB in the end (delta: -13.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:48:19,127 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.64ms. Allocated memory is still 90.2MB. Free memory was 66.4MB in the beginning and 65.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:48:19,127 INFO L158 Benchmark]: Boogie Preprocessor took 36.49ms. Allocated memory is still 90.2MB. Free memory was 65.0MB in the beginning and 63.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:48:19,128 INFO L158 Benchmark]: RCFGBuilder took 274.96ms. Allocated memory is still 90.2MB. Free memory was 63.7MB in the beginning and 54.1MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 02:48:19,128 INFO L158 Benchmark]: TraceAbstraction took 723.86ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 53.5MB in the beginning and 73.8MB in the end (delta: -20.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:48:19,129 INFO L158 Benchmark]: Witness Printer took 3.71ms. Allocated memory is still 109.1MB. Free memory was 73.8MB in the beginning and 73.2MB in the end (delta: 644.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:48:19,132 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 90.2MB. Free memory is still 70.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 289.69ms. Allocated memory is still 90.2MB. Free memory was 53.0MB in the beginning and 66.4MB in the end (delta: -13.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.64ms. Allocated memory is still 90.2MB. Free memory was 66.4MB in the beginning and 65.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.49ms. Allocated memory is still 90.2MB. Free memory was 65.0MB in the beginning and 63.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 274.96ms. Allocated memory is still 90.2MB. Free memory was 63.7MB in the beginning and 54.1MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 723.86ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 53.5MB in the beginning and 73.8MB in the end (delta: -20.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.71ms. Allocated memory is still 109.1MB. Free memory was 73.8MB in the beginning and 73.2MB in the end (delta: 644.7kB). There was no memory consumed. 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 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L24] int counter = 0; [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0, r=0] [L32] EXPR counter++ VAL [counter=1, counter++=0, r=0] [L32] COND TRUE counter++<100 [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0, counter=1] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=1] [L19] reach_error() VAL [\old(cond)=0, cond=0, counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 25 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 02:48:19,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI --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 f78eb3bd6243e56025d38ea44716c81630a57505e69e1c5e81a8ab68f6ac9a28 --- 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-5e519f3 [2022-11-03 02:48:21,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:48:21,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:48:21,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:48:21,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:48:21,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:48:21,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:48:21,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:48:21,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:48:21,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:48:21,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:48:21,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:48:21,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:48:21,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:48:21,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:48:21,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:48:21,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:48:21,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:48:21,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:48:21,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:48:21,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:48:21,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:48:21,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:48:21,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:48:21,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:48:21,667 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:48:21,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:48:21,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:48:21,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:48:21,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:48:21,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:48:21,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:48:21,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:48:21,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:48:21,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:48:21,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:48:21,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:48:21,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:48:21,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:48:21,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:48:21,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:48:21,683 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-03 02:48:21,728 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:48:21,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:48:21,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:48:21,730 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:48:21,731 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:48:21,731 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:48:21,732 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:48:21,732 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:48:21,732 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:48:21,732 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:48:21,733 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:48:21,733 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:48:21,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:48:21,735 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:48:21,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:48:21,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:48:21,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:48:21,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:48:21,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:48:21,736 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:48:21,737 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:48:21,737 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:48:21,737 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:48:21,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:48:21,737 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:48:21,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:48:21,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:48:21,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:48:21,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:48:21,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:48:21,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:48:21,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:48:21,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:48:21,739 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:48:21,739 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:48:21,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:48:21,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:48:21,740 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:48:21,740 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f78eb3bd6243e56025d38ea44716c81630a57505e69e1c5e81a8ab68f6ac9a28 [2022-11-03 02:48:22,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:48:22,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:48:22,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:48:22,170 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:48:22,171 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:48:22,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound100.c [2022-11-03 02:48:22,239 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/data/8e293fd12/d3d7c936110545f0b73306aca3cafc66/FLAGd60cd8d23 [2022-11-03 02:48:22,767 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:48:22,767 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound100.c [2022-11-03 02:48:22,773 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/data/8e293fd12/d3d7c936110545f0b73306aca3cafc66/FLAGd60cd8d23 [2022-11-03 02:48:23,129 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/data/8e293fd12/d3d7c936110545f0b73306aca3cafc66 [2022-11-03 02:48:23,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:48:23,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:48:23,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:48:23,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:48:23,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:48:23,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:48:23" (1/1) ... [2022-11-03 02:48:23,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@712cb4bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:23, skipping insertion in model container [2022-11-03 02:48:23,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:48:23" (1/1) ... [2022-11-03 02:48:23,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:48:23,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:48:23,324 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_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound100.c[712,725] [2022-11-03 02:48:23,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:48:23,351 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:48:23,383 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_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound100.c[712,725] [2022-11-03 02:48:23,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:48:23,408 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:48:23,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:23 WrapperNode [2022-11-03 02:48:23,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:48:23,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:48:23,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:48:23,410 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:48:23,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:23" (1/1) ... [2022-11-03 02:48:23,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:23" (1/1) ... [2022-11-03 02:48:23,442 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2022-11-03 02:48:23,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:48:23,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:48:23,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:48:23,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:48:23,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:23" (1/1) ... [2022-11-03 02:48:23,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:23" (1/1) ... [2022-11-03 02:48:23,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:23" (1/1) ... [2022-11-03 02:48:23,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:23" (1/1) ... [2022-11-03 02:48:23,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:23" (1/1) ... [2022-11-03 02:48:23,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:23" (1/1) ... [2022-11-03 02:48:23,466 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:23" (1/1) ... [2022-11-03 02:48:23,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:23" (1/1) ... [2022-11-03 02:48:23,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:48:23,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:48:23,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:48:23,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:48:23,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:23" (1/1) ... [2022-11-03 02:48:23,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:48:23,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:48:23,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:48:23,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:48:23,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:48:23,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 02:48:23,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:48:23,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:48:23,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 02:48:23,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 02:48:23,635 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:48:23,638 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:48:24,697 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:48:24,703 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:48:24,703 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:48:24,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:48:24 BoogieIcfgContainer [2022-11-03 02:48:24,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:48:24,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:48:24,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:48:24,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:48:24,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:48:23" (1/3) ... [2022-11-03 02:48:24,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6f9782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:48:24, skipping insertion in model container [2022-11-03 02:48:24,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:23" (2/3) ... [2022-11-03 02:48:24,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6f9782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:48:24, skipping insertion in model container [2022-11-03 02:48:24,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:48:24" (3/3) ... [2022-11-03 02:48:24,714 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound100.c [2022-11-03 02:48:24,734 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:48:24,734 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:48:24,784 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:48:24,791 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;@144df80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:48:24,791 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:48:24,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:48:24,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 02:48:24,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:24,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:48:24,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:24,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:24,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2022-11-03 02:48:24,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:24,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168269187] [2022-11-03 02:48:24,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:24,824 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:24,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:24,828 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:24,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:48:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:25,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 02:48:25,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:25,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:48:25,347 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:25,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168269187] [2022-11-03 02:48:25,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168269187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:25,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:25,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:48:25,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184828186] [2022-11-03 02:48:25,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:25,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:48:25,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:25,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:48:25,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:48:25,388 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:25,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:25,407 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2022-11-03 02:48:25,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:48:25,409 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 02:48:25,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:25,417 INFO L225 Difference]: With dead ends: 32 [2022-11-03 02:48:25,417 INFO L226 Difference]: Without dead ends: 13 [2022-11-03 02:48:25,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:48:25,424 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:25,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:48:25,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-03 02:48:25,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-03 02:48:25,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:48:25,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-11-03 02:48:25,463 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2022-11-03 02:48:25,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:25,464 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-11-03 02:48:25,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:25,464 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-11-03 02:48:25,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 02:48:25,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:25,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:48:25,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:48:25,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:25,681 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:25,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:25,682 INFO L85 PathProgramCache]: Analyzing trace with hash 178410715, now seen corresponding path program 1 times [2022-11-03 02:48:25,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:25,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447035262] [2022-11-03 02:48:25,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:25,684 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:25,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:25,686 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:25,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:48:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:26,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:48:26,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:26,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:26,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:48:26,250 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:26,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447035262] [2022-11-03 02:48:26,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447035262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:26,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:26,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:48:26,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307446366] [2022-11-03 02:48:26,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:26,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:48:26,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:26,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:48:26,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:48:26,255 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:27,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:48:27,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:27,547 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-11-03 02:48:27,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:48:27,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 8 [2022-11-03 02:48:27,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:27,549 INFO L225 Difference]: With dead ends: 22 [2022-11-03 02:48:27,549 INFO L226 Difference]: Without dead ends: 15 [2022-11-03 02:48:27,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:48:27,551 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:27,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-03 02:48:27,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-03 02:48:27,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-03 02:48:27,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:48:27,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-11-03 02:48:27,560 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2022-11-03 02:48:27,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:27,561 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-11-03 02:48:27,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:27,561 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-11-03 02:48:27,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 02:48:27,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:27,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:48:27,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:48:27,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:27,764 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:27,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:27,765 INFO L85 PathProgramCache]: Analyzing trace with hash 180198175, now seen corresponding path program 1 times [2022-11-03 02:48:27,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:27,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645325429] [2022-11-03 02:48:27,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:27,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:27,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:27,767 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:27,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:48:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:31,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:48:31,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:55,237 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (or (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0) (fp.mul roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse2)))) (_ bv0 32))) (= |c___VERIFIER_assert_#in~cond| (_ bv1 32))) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0) (fp.mul roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse2)))) (_ bv0 32)))) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))))) is different from false [2022-11-03 02:49:01,949 WARN L833 $PredicateComparison]: unable to prove that (or (= (_ bv1 32) c___VERIFIER_assert_~cond) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (= (_ bv0 32) c___VERIFIER_assert_~cond))) is different from false [2022-11-03 02:49:03,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:49:03,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:49:03,862 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:49:03,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645325429] [2022-11-03 02:49:03,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645325429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:49:03,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:49:03,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:49:03,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240395839] [2022-11-03 02:49:03,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:49:03,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:49:03,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:49:03,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:49:03,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=8, Unknown=2, NotChecked=10, Total=30 [2022-11-03 02:49:03,866 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:49:06,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:49:09,097 WARN L833 $PredicateComparison]: unable to prove that (and (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (or (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0) (fp.mul roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse2)))) (_ bv0 32))) (= |c___VERIFIER_assert_#in~cond| (_ bv1 32))) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0) (fp.mul roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse2)))) (_ bv0 32)))) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-11-03 02:49:11,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:49:13,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:49:15,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:49:18,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:49:18,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:49:18,403 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2022-11-03 02:49:18,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:49:18,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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 8 [2022-11-03 02:49:18,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:49:18,413 INFO L225 Difference]: With dead ends: 25 [2022-11-03 02:49:18,413 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 02:49:18,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=12, Invalid=9, Unknown=3, NotChecked=18, Total=42 [2022-11-03 02:49:18,414 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:49:18,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 50 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 5 Unknown, 24 Unchecked, 12.3s Time] [2022-11-03 02:49:18,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 02:49:18,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 02:49:18,416 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) [2022-11-03 02:49:18,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 02:49:18,417 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2022-11-03 02:49:18,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:49:18,417 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 02:49:18,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:49:18,417 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 02:49:18,417 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 02:49:18,420 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:49:18,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:49:18,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:49:18,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 02:49:18,983 INFO L902 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: true [2022-11-03 02:49:18,983 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 02:49:18,983 INFO L899 garLoopResultBuilder]: For program point L33-1(lines 32 39) no Hoare annotation was computed. [2022-11-03 02:49:18,983 INFO L902 garLoopResultBuilder]: At program point L42(lines 25 43) the Hoare annotation is: true [2022-11-03 02:49:18,983 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-03 02:49:18,983 INFO L899 garLoopResultBuilder]: For program point L32-1(lines 32 39) no Hoare annotation was computed. [2022-11-03 02:49:18,983 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-03 02:49:18,984 INFO L902 garLoopResultBuilder]: At program point L32-3(lines 32 39) the Hoare annotation is: true [2022-11-03 02:49:18,984 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-03 02:49:18,984 INFO L902 garLoopResultBuilder]: At program point L32-4(lines 32 39) the Hoare annotation is: true [2022-11-03 02:49:18,984 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2022-11-03 02:49:18,984 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 20) no Hoare annotation was computed. [2022-11-03 02:49:18,984 INFO L899 garLoopResultBuilder]: For program point L17-2(lines 16 22) no Hoare annotation was computed. [2022-11-03 02:49:18,985 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 16 22) the Hoare annotation is: true [2022-11-03 02:49:18,985 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 16 22) no Hoare annotation was computed. [2022-11-03 02:49:18,996 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-11-03 02:49:18,996 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 19) no Hoare annotation was computed. [2022-11-03 02:49:18,999 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-03 02:49:19,001 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:49:19,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:49:19 BoogieIcfgContainer [2022-11-03 02:49:19,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:49:19,010 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:49:19,012 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:49:19,013 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:49:19,014 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:48:24" (3/4) ... [2022-11-03 02:49:19,017 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 02:49:19,024 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-03 02:49:19,028 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-03 02:49:19,029 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-03 02:49:19,029 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 02:49:19,030 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 02:49:19,069 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 02:49:19,069 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:49:19,070 INFO L158 Benchmark]: Toolchain (without parser) took 55936.67ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 53.4MB in the beginning and 84.3MB in the end (delta: -30.9MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. [2022-11-03 02:49:19,070 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 71.3MB. Free memory was 52.8MB in the beginning and 52.7MB in the end (delta: 49.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:49:19,070 INFO L158 Benchmark]: CACSL2BoogieTranslator took 274.36ms. Allocated memory is still 71.3MB. Free memory was 53.2MB in the beginning and 54.8MB in the end (delta: -1.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 02:49:19,071 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.15ms. Allocated memory is still 71.3MB. Free memory was 54.8MB in the beginning and 53.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:49:19,071 INFO L158 Benchmark]: Boogie Preprocessor took 26.40ms. Allocated memory is still 71.3MB. Free memory was 53.2MB in the beginning and 51.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:49:19,072 INFO L158 Benchmark]: RCFGBuilder took 1235.05ms. Allocated memory is still 71.3MB. Free memory was 51.8MB in the beginning and 42.0MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 02:49:19,072 INFO L158 Benchmark]: TraceAbstraction took 54299.93ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 41.3MB in the beginning and 87.1MB in the end (delta: -45.8MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. [2022-11-03 02:49:19,072 INFO L158 Benchmark]: Witness Printer took 59.47ms. Allocated memory is still 104.9MB. Free memory was 86.4MB in the beginning and 84.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:49:19,076 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 71.3MB. Free memory was 52.8MB in the beginning and 52.7MB in the end (delta: 49.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 274.36ms. Allocated memory is still 71.3MB. Free memory was 53.2MB in the beginning and 54.8MB in the end (delta: -1.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.15ms. Allocated memory is still 71.3MB. Free memory was 54.8MB in the beginning and 53.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.40ms. Allocated memory is still 71.3MB. Free memory was 53.2MB in the beginning and 51.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1235.05ms. Allocated memory is still 71.3MB. Free memory was 51.8MB in the beginning and 42.0MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 54299.93ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 41.3MB in the beginning and 87.1MB in the end (delta: -45.8MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. * Witness Printer took 59.47ms. Allocated memory is still 104.9MB. Free memory was 86.4MB in the beginning and 84.3MB 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: 19]: 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 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 54.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 15.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 13.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 104 SdHoareTripleChecker+Invalid, 13.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 24 IncrementalHoareTripleChecker+Unchecked, 59 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13 IncrementalHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 45 mSDtfsCounter, 13 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 11 PreInvPairs, 18 NumberOfFragments, 5 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 146 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 4.4s SatisfiabilityAnalysisTime, 32.7s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 2 QuantifiedInterpolants, 174 SizeOfPredicates, 3 NumberOfNonLiveVariables, 79 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-03 02:49:19,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b023bf-9e3e-4019-9d15-b6b1faaa46a1/bin/utaipan-7li7fVZpFI/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