./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/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_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/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_b6b6fe9f-001f-484b-88f8-39c06f173783/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 ccec72d1445b0e5a7d371146f8f1ae3659440ba0ebb02d40d87a31c04bfcf378 --- 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 03:48:51,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:48:51,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:48:51,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:48:51,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:48:51,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:48:51,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:48:51,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:48:51,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:48:51,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:48:51,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:48:51,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:48:51,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:48:51,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:48:51,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:48:51,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:48:51,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:48:51,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:48:51,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:48:51,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:48:51,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:48:51,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:48:51,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:48:51,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:48:51,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:48:51,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:48:51,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:48:51,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:48:51,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:48:51,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:48:51,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:48:51,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:48:51,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:48:51,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:48:51,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:48:51,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:48:51,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:48:51,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:48:51,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:48:51,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:48:51,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:48:51,619 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:48:51,655 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:48:51,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:48:51,661 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:48:51,661 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:48:51,662 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:48:51,662 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:48:51,662 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:48:51,663 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:48:51,663 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:48:51,663 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:48:51,664 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:48:51,665 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:48:51,665 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:48:51,665 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:48:51,665 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:48:51,666 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:48:51,666 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:48:51,666 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:48:51,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:48:51,667 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:48:51,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:48:51,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:48:51,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:48:51,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:48:51,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:48:51,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:48:51,669 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:48:51,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:48:51,669 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:48:51,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:48:51,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:48:51,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:48:51,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:48:51,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:48:51,671 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:48:51,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:48:51,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:48:51,671 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:48:51,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:48:51,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:48:51,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:48:51,672 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_b6b6fe9f-001f-484b-88f8-39c06f173783/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccec72d1445b0e5a7d371146f8f1ae3659440ba0ebb02d40d87a31c04bfcf378 [2022-11-03 03:48:51,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:48:52,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:48:52,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:48:52,018 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:48:52,020 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:48:52,022 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2022-11-03 03:48:52,104 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/data/61d382b02/5159469ba61e4727a64501dbdd30ba8c/FLAG4b3fc896f [2022-11-03 03:48:52,654 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:48:52,654 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2022-11-03 03:48:52,668 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/data/61d382b02/5159469ba61e4727a64501dbdd30ba8c/FLAG4b3fc896f [2022-11-03 03:48:53,009 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/data/61d382b02/5159469ba61e4727a64501dbdd30ba8c [2022-11-03 03:48:53,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:48:53,016 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:48:53,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:48:53,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:48:53,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:48:53,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:48:53" (1/1) ... [2022-11-03 03:48:53,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6948e5f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:53, skipping insertion in model container [2022-11-03 03:48:53,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:48:53" (1/1) ... [2022-11-03 03:48:53,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:48:53,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:48:53,292 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_b6b6fe9f-001f-484b-88f8-39c06f173783/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c[3180,3193] [2022-11-03 03:48:53,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:48:53,305 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:48:53,336 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_b6b6fe9f-001f-484b-88f8-39c06f173783/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c[3180,3193] [2022-11-03 03:48:53,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:48:53,351 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:48:53,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:53 WrapperNode [2022-11-03 03:48:53,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:48:53,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:48:53,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:48:53,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:48:53,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:53" (1/1) ... [2022-11-03 03:48:53,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:53" (1/1) ... [2022-11-03 03:48:53,401 INFO L138 Inliner]: procedures = 18, calls = 42, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 161 [2022-11-03 03:48:53,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:48:53,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:48:53,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:48:53,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:48:53,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:53" (1/1) ... [2022-11-03 03:48:53,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:53" (1/1) ... [2022-11-03 03:48:53,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:53" (1/1) ... [2022-11-03 03:48:53,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:53" (1/1) ... [2022-11-03 03:48:53,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:53" (1/1) ... [2022-11-03 03:48:53,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:53" (1/1) ... [2022-11-03 03:48:53,428 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:53" (1/1) ... [2022-11-03 03:48:53,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:53" (1/1) ... [2022-11-03 03:48:53,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:48:53,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:48:53,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:48:53,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:48:53,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:53" (1/1) ... [2022-11-03 03:48:53,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:48:53,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:48:53,483 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:48:53,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:48:53,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:48:53,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:48:53,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:48:53,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:48:53,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-03 03:48:53,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-03 03:48:53,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:48:53,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:48:53,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:48:53,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-11-03 03:48:53,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:48:53,651 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:48:53,653 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:48:53,951 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:48:54,021 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:48:54,022 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-03 03:48:54,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:48:54 BoogieIcfgContainer [2022-11-03 03:48:54,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:48:54,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:48:54,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:48:54,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:48:54,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:48:53" (1/3) ... [2022-11-03 03:48:54,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1618b3cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:48:54, skipping insertion in model container [2022-11-03 03:48:54,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:53" (2/3) ... [2022-11-03 03:48:54,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1618b3cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:48:54, skipping insertion in model container [2022-11-03 03:48:54,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:48:54" (3/3) ... [2022-11-03 03:48:54,042 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832a.c [2022-11-03 03:48:54,074 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:48:54,074 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:48:54,131 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:48:54,138 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;@4f79e21b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:48:54,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:48:54,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.75) internal successors, (49), 29 states have internal predecessors, (49), 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 03:48:54,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 03:48:54,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:54,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:54,150 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:54,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:54,156 INFO L85 PathProgramCache]: Analyzing trace with hash -836543721, now seen corresponding path program 1 times [2022-11-03 03:48:54,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:54,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105826933] [2022-11-03 03:48:54,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:54,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:54,395 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 03:48:54,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:54,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105826933] [2022-11-03 03:48:54,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105826933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:54,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:54,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:48:54,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060686432] [2022-11-03 03:48:54,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:54,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:48:54,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:54,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:48:54,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:48:54,441 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.75) internal successors, (49), 29 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 03:48:54,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:54,493 INFO L93 Difference]: Finished difference Result 59 states and 97 transitions. [2022-11-03 03:48:54,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:48:54,496 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 03:48:54,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:54,510 INFO L225 Difference]: With dead ends: 59 [2022-11-03 03:48:54,510 INFO L226 Difference]: Without dead ends: 28 [2022-11-03 03:48:54,514 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 03:48:54,520 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:54,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:48:54,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-03 03:48:54,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-03 03:48:54,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 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 03:48:54,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-11-03 03:48:54,565 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 7 [2022-11-03 03:48:54,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:54,566 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-11-03 03:48:54,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 03:48:54,567 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-11-03 03:48:54,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 03:48:54,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:54,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:54,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:48:54,568 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:54,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:54,571 INFO L85 PathProgramCache]: Analyzing trace with hash 2065220720, now seen corresponding path program 1 times [2022-11-03 03:48:54,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:54,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397228071] [2022-11-03 03:48:54,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:54,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:48:54,675 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 03:48:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:48:54,805 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 03:48:54,806 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 03:48:54,808 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 03:48:54,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:48:54,815 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-03 03:48:54,819 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 03:48:54,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:48:54 BoogieIcfgContainer [2022-11-03 03:48:54,866 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 03:48:54,868 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 03:48:54,868 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 03:48:54,868 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 03:48:54,869 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:48:54" (3/4) ... [2022-11-03 03:48:54,872 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 03:48:54,873 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 03:48:54,874 INFO L158 Benchmark]: Toolchain (without parser) took 1857.31ms. Allocated memory was 113.2MB in the beginning and 148.9MB in the end (delta: 35.7MB). Free memory was 78.5MB in the beginning and 120.8MB in the end (delta: -42.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:48:54,875 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 113.2MB. Free memory was 86.4MB in the beginning and 86.4MB in the end (delta: 31.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:48:54,880 INFO L158 Benchmark]: CACSL2BoogieTranslator took 330.85ms. Allocated memory is still 113.2MB. Free memory was 78.4MB in the beginning and 86.0MB in the end (delta: -7.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 03:48:54,883 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.91ms. Allocated memory is still 113.2MB. Free memory was 86.0MB in the beginning and 84.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:48:54,887 INFO L158 Benchmark]: Boogie Preprocessor took 29.23ms. Allocated memory is still 113.2MB. Free memory was 83.9MB in the beginning and 82.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:48:54,887 INFO L158 Benchmark]: RCFGBuilder took 592.61ms. Allocated memory is still 113.2MB. Free memory was 82.4MB in the beginning and 64.1MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-03 03:48:54,888 INFO L158 Benchmark]: TraceAbstraction took 839.24ms. Allocated memory was 113.2MB in the beginning and 148.9MB in the end (delta: 35.7MB). Free memory was 63.5MB in the beginning and 121.8MB in the end (delta: -58.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:48:54,888 INFO L158 Benchmark]: Witness Printer took 5.13ms. Allocated memory is still 148.9MB. Free memory was 121.8MB in the beginning and 120.8MB in the end (delta: 915.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:48:54,891 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 113.2MB. Free memory was 86.4MB in the beginning and 86.4MB in the end (delta: 31.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 330.85ms. Allocated memory is still 113.2MB. Free memory was 78.4MB in the beginning and 86.0MB in the end (delta: -7.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.91ms. Allocated memory is still 113.2MB. Free memory was 86.0MB in the beginning and 84.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.23ms. Allocated memory is still 113.2MB. Free memory was 83.9MB in the beginning and 82.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 592.61ms. Allocated memory is still 113.2MB. Free memory was 82.4MB in the beginning and 64.1MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 839.24ms. Allocated memory was 113.2MB in the beginning and 148.9MB in the end (delta: 35.7MB). Free memory was 63.5MB in the beginning and 121.8MB in the end (delta: -58.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.13ms. Allocated memory is still 148.9MB. Free memory was 121.8MB in the beginning and 120.8MB in the end (delta: 915.6kB). 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: 124]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 123, overapproximation of someUnaryDOUBLEoperation at line 21, overapproximation of bitwiseAnd at line 49, overapproximation of someBinaryArithmeticFLOAToperation at line 52. Possible FailurePath: [L17-L36] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; [L119] float x = 0.0f; [L120] CALL, EXPR __ieee754_expf(x) [L39] float y, hi, lo, c, t; [L40] __int32_t k = 0, xsb, sx; [L41] __uint32_t hx; VAL [\old(x)=0, halF_exp={4:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, k=0, ln2HI_exp={5:0}, ln2LO_exp={6:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000, x=0] [L44] ieee_float_shape_type gf_u; [L45] gf_u.value = (x) [L46] EXPR gf_u.word [L46] (sx) = gf_u.word [L48] xsb = (sx >> 31) & 1 [L49] hx = sx & 0x7fffffff VAL [\old(x)=0, halF_exp={4:0}, huge_exp=1000000000000000000000000000000, hx=2139095041, invln2_exp=1803368777/1250000000, k=0, ln2HI_exp={5:0}, ln2LO_exp={6:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, sx=9, twom100_exp=39443045261/50000000000000000000000000000000000000000, x=0, xsb=0] [L51] COND TRUE ((hx) > 0x7f800000L) [L52] return x + x; VAL [\old(x)=0, halF_exp={4:0}, huge_exp=1000000000000000000000000000000, hx=2139095041, invln2_exp=1803368777/1250000000, k=0, ln2HI_exp={5:0}, ln2LO_exp={6:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, sx=9, twom100_exp=39443045261/50000000000000000000000000000000000000000, x=0, xsb=0] [L120] RET, EXPR __ieee754_expf(x) [L120] float res = __ieee754_expf(x); [L123] COND TRUE res != 1.0f VAL [halF_exp={4:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={6:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, res=1000000000000000000000000000001, twom100_exp=39443045261/50000000000000000000000000000000000000000, x=0] [L124] reach_error() VAL [halF_exp={4:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={6:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, res=1000000000000000000000000000001, twom100_exp=39443045261/50000000000000000000000000000000000000000, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, 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, 34 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 34 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 03:48:54,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/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_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/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_b6b6fe9f-001f-484b-88f8-39c06f173783/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 ccec72d1445b0e5a7d371146f8f1ae3659440ba0ebb02d40d87a31c04bfcf378 --- 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 03:48:57,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:48:57,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:48:57,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:48:57,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:48:57,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:48:57,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:48:57,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:48:57,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:48:57,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:48:57,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:48:57,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:48:57,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:48:57,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:48:57,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:48:57,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:48:57,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:48:57,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:48:57,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:48:57,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:48:57,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:48:57,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:48:57,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:48:57,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:48:57,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:48:57,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:48:57,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:48:57,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:48:57,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:48:57,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:48:57,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:48:57,399 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:48:57,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:48:57,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:48:57,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:48:57,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:48:57,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:48:57,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:48:57,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:48:57,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:48:57,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:48:57,417 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-03 03:48:57,468 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:48:57,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:48:57,469 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:48:57,469 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:48:57,470 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:48:57,470 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:48:57,470 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:48:57,470 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:48:57,470 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:48:57,470 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:48:57,471 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:48:57,471 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:48:57,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:48:57,472 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:48:57,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:48:57,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:48:57,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:48:57,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:48:57,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:48:57,473 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 03:48:57,473 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 03:48:57,473 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 03:48:57,473 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:48:57,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:48:57,474 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:48:57,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:48:57,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:48:57,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 03:48:57,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:48:57,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:48:57,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:48:57,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:48:57,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:48:57,476 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 03:48:57,480 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 03:48:57,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:48:57,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:48:57,482 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 03:48:57,482 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_b6b6fe9f-001f-484b-88f8-39c06f173783/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccec72d1445b0e5a7d371146f8f1ae3659440ba0ebb02d40d87a31c04bfcf378 [2022-11-03 03:48:57,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:48:57,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:48:57,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:48:57,888 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:48:57,889 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:48:57,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2022-11-03 03:48:57,960 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/data/7433879e3/1aa504dedf7f45ec8de7838c9522b57d/FLAGc4f667523 [2022-11-03 03:48:58,535 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:48:58,536 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2022-11-03 03:48:58,544 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/data/7433879e3/1aa504dedf7f45ec8de7838c9522b57d/FLAGc4f667523 [2022-11-03 03:48:58,856 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/data/7433879e3/1aa504dedf7f45ec8de7838c9522b57d [2022-11-03 03:48:58,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:48:58,860 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:48:58,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:48:58,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:48:58,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:48:58,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:48:58" (1/1) ... [2022-11-03 03:48:58,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19881442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:58, skipping insertion in model container [2022-11-03 03:48:58,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:48:58" (1/1) ... [2022-11-03 03:48:58,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:48:58,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:48:59,079 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_b6b6fe9f-001f-484b-88f8-39c06f173783/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c[3180,3193] [2022-11-03 03:48:59,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:48:59,144 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:48:59,213 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_b6b6fe9f-001f-484b-88f8-39c06f173783/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c[3180,3193] [2022-11-03 03:48:59,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:48:59,236 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:48:59,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:59 WrapperNode [2022-11-03 03:48:59,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:48:59,239 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:48:59,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:48:59,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:48:59,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:59" (1/1) ... [2022-11-03 03:48:59,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:59" (1/1) ... [2022-11-03 03:48:59,318 INFO L138 Inliner]: procedures = 21, calls = 42, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 162 [2022-11-03 03:48:59,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:48:59,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:48:59,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:48:59,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:48:59,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:59" (1/1) ... [2022-11-03 03:48:59,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:59" (1/1) ... [2022-11-03 03:48:59,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:59" (1/1) ... [2022-11-03 03:48:59,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:59" (1/1) ... [2022-11-03 03:48:59,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:59" (1/1) ... [2022-11-03 03:48:59,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:59" (1/1) ... [2022-11-03 03:48:59,393 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:59" (1/1) ... [2022-11-03 03:48:59,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:59" (1/1) ... [2022-11-03 03:48:59,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:48:59,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:48:59,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:48:59,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:48:59,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:59" (1/1) ... [2022-11-03 03:48:59,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:48:59,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:48:59,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:48:59,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:48:59,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:48:59,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2022-11-03 03:48:59,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 03:48:59,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:48:59,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-11-03 03:48:59,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-03 03:48:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:48:59,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:48:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-11-03 03:48:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 03:48:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:48:59,580 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:48:59,582 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:49:09,100 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:49:09,107 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:49:09,107 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-03 03:49:09,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:49:09 BoogieIcfgContainer [2022-11-03 03:49:09,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:49:09,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:49:09,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:49:09,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:49:09,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:48:58" (1/3) ... [2022-11-03 03:49:09,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ac7caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:49:09, skipping insertion in model container [2022-11-03 03:49:09,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:59" (2/3) ... [2022-11-03 03:49:09,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ac7caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:49:09, skipping insertion in model container [2022-11-03 03:49:09,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:49:09" (3/3) ... [2022-11-03 03:49:09,119 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832a.c [2022-11-03 03:49:09,138 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:49:09,138 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:49:09,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:49:09,195 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;@301ddc49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:49:09,195 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:49:09,199 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 35 states have internal predecessors, (57), 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 03:49:09,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 03:49:09,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:09,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:09,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:09,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:09,213 INFO L85 PathProgramCache]: Analyzing trace with hash 354246130, now seen corresponding path program 1 times [2022-11-03 03:49:09,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:09,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130187298] [2022-11-03 03:49:09,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:09,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:09,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:09,232 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:09,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 03:49:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:09,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 03:49:09,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:09,971 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 03:49:09,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:09,972 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:09,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130187298] [2022-11-03 03:49:09,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130187298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:09,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:09,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:49:09,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763180228] [2022-11-03 03:49:09,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:09,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:49:09,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:10,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:49:10,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:49:10,022 INFO L87 Difference]: Start difference. First operand has 36 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:10,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:10,051 INFO L93 Difference]: Finished difference Result 70 states and 112 transitions. [2022-11-03 03:49:10,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:49:10,053 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 03:49:10,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:10,063 INFO L225 Difference]: With dead ends: 70 [2022-11-03 03:49:10,067 INFO L226 Difference]: Without dead ends: 33 [2022-11-03 03:49:10,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 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 03:49:10,075 INFO L413 NwaCegarLoop]: 46 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, 46 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 03:49:10,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:49:10,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-03 03:49:10,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-03 03:49:10,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.34375) internal successors, (43), 32 states have internal predecessors, (43), 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 03:49:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2022-11-03 03:49:10,138 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 8 [2022-11-03 03:49:10,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:10,138 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2022-11-03 03:49:10,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:10,139 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2022-11-03 03:49:10,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 03:49:10,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:10,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:10,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:10,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:10,363 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:10,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:10,364 INFO L85 PathProgramCache]: Analyzing trace with hash 325000437, now seen corresponding path program 1 times [2022-11-03 03:49:10,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:10,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199390686] [2022-11-03 03:49:10,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:10,366 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:10,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:10,367 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:10,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 03:49:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:10,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 03:49:10,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:11,174 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 03:49:11,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:11,174 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:11,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199390686] [2022-11-03 03:49:11,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199390686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:11,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:11,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:49:11,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830782188] [2022-11-03 03:49:11,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:11,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:49:11,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:11,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:49:11,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:49:11,179 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 03:49:13,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:15,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:18,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:20,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:20,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:20,955 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2022-11-03 03:49:21,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:49:21,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-03 03:49:21,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:21,027 INFO L225 Difference]: With dead ends: 37 [2022-11-03 03:49:21,027 INFO L226 Difference]: Without dead ends: 33 [2022-11-03 03:49:21,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:49:21,028 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:21,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 128 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 4 Unknown, 13 Unchecked, 9.7s Time] [2022-11-03 03:49:21,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-03 03:49:21,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-03 03:49:21,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 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 03:49:21,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-11-03 03:49:21,034 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 9 [2022-11-03 03:49:21,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:21,035 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-11-03 03:49:21,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 03:49:21,035 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-11-03 03:49:21,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 03:49:21,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:21,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:21,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:21,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:21,256 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:21,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:21,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1239545392, now seen corresponding path program 1 times [2022-11-03 03:49:21,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:21,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108931429] [2022-11-03 03:49:21,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:21,258 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:21,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:21,259 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:21,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 03:49:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:21,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:49:21,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:21,973 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 03:49:21,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:21,973 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:21,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108931429] [2022-11-03 03:49:21,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108931429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:21,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:21,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:49:21,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176358307] [2022-11-03 03:49:21,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:21,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:49:21,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:21,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:49:21,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:49:21,977 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 03:49:24,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:26,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:28,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:31,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:31,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:31,222 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2022-11-03 03:49:31,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:49:31,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 03:49:31,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:31,296 INFO L225 Difference]: With dead ends: 44 [2022-11-03 03:49:31,296 INFO L226 Difference]: Without dead ends: 40 [2022-11-03 03:49:31,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:49:31,297 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 38 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:31,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 65 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 4 Unknown, 0 Unchecked, 9.2s Time] [2022-11-03 03:49:31,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-03 03:49:31,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2022-11-03 03:49:31,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 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 03:49:31,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-11-03 03:49:31,303 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 11 [2022-11-03 03:49:31,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:31,303 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-11-03 03:49:31,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 03:49:31,303 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-11-03 03:49:31,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 03:49:31,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:31,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:31,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:31,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:31,505 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:31,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:31,506 INFO L85 PathProgramCache]: Analyzing trace with hash -40038256, now seen corresponding path program 1 times [2022-11-03 03:49:31,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:31,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142055466] [2022-11-03 03:49:31,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:31,507 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:31,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:31,510 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:31,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 03:49:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:32,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 03:49:32,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:32,297 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 03:49:32,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:32,297 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:32,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142055466] [2022-11-03 03:49:32,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142055466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:32,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:32,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:49:32,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289991584] [2022-11-03 03:49:32,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:32,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:49:32,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:32,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:49:32,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:49:32,301 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:34,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:36,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:39,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:41,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:41,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:41,750 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-11-03 03:49:41,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:49:41,831 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 03:49:41,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:41,832 INFO L225 Difference]: With dead ends: 37 [2022-11-03 03:49:41,832 INFO L226 Difference]: Without dead ends: 31 [2022-11-03 03:49:41,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:49:41,834 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 4 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:41,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 106 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 4 Unknown, 11 Unchecked, 9.3s Time] [2022-11-03 03:49:41,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-03 03:49:41,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-03 03:49:41,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 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 03:49:41,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-11-03 03:49:41,839 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 12 [2022-11-03 03:49:41,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:41,840 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-11-03 03:49:41,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:41,840 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-11-03 03:49:41,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 03:49:41,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:41,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:41,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:42,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:42,042 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:42,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:42,042 INFO L85 PathProgramCache]: Analyzing trace with hash -239562945, now seen corresponding path program 1 times [2022-11-03 03:49:42,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:42,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761488333] [2022-11-03 03:49:42,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:42,043 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:42,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:42,044 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:42,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 03:49:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:42,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 03:49:42,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:43,242 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 03:49:43,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:43,242 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:43,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761488333] [2022-11-03 03:49:43,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761488333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:43,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:43,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:49:43,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721738154] [2022-11-03 03:49:43,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:43,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:49:43,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:43,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:49:43,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:49:43,245 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 03:49:45,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:47,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:50,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:52,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:54,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:56,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:58,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:00,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:02,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:04,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:05,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:05,216 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2022-11-03 03:50:05,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:50:05,217 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-03 03:50:05,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:05,217 INFO L225 Difference]: With dead ends: 38 [2022-11-03 03:50:05,217 INFO L226 Difference]: Without dead ends: 34 [2022-11-03 03:50:05,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:50:05,219 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 17 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:05,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 97 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 10 Unknown, 0 Unchecked, 21.8s Time] [2022-11-03 03:50:05,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-03 03:50:05,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2022-11-03 03:50:05,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 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 03:50:05,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-11-03 03:50:05,225 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 15 [2022-11-03 03:50:05,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:05,225 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-11-03 03:50:05,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 03:50:05,225 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-11-03 03:50:05,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 03:50:05,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:05,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:50:05,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:50:05,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:50:05,440 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:50:05,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:05,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1367727609, now seen corresponding path program 1 times [2022-11-03 03:50:05,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:50:05,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933521091] [2022-11-03 03:50:05,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:05,441 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:50:05,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:50:05,442 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:50:05,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 03:50:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:06,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 03:50:06,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:50:06,959 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 03:50:06,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:50:06,960 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:50:06,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933521091] [2022-11-03 03:50:06,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933521091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:06,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:50:06,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:50:06,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754578874] [2022-11-03 03:50:06,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:06,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:50:06,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:50:06,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:50:06,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:50:06,963 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 03:50:09,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:11,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:13,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:16,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:16,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:16,108 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2022-11-03 03:50:16,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:50:16,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-03 03:50:16,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:16,189 INFO L225 Difference]: With dead ends: 48 [2022-11-03 03:50:16,189 INFO L226 Difference]: Without dead ends: 31 [2022-11-03 03:50:16,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:50:16,191 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:16,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 88 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 4 Unknown, 11 Unchecked, 9.1s Time] [2022-11-03 03:50:16,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-03 03:50:16,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-03 03:50:16,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 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 03:50:16,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-11-03 03:50:16,196 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 16 [2022-11-03 03:50:16,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:16,196 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-11-03 03:50:16,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 03:50:16,197 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-11-03 03:50:16,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:50:16,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:16,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:50:16,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:50:16,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:50:16,400 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:50:16,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:16,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1708303706, now seen corresponding path program 1 times [2022-11-03 03:50:16,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:50:16,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291345862] [2022-11-03 03:50:16,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:16,402 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:50:16,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:50:16,403 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:50:16,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 03:50:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:17,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:50:17,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:50:18,316 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 03:50:18,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:50:18,316 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:50:18,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291345862] [2022-11-03 03:50:18,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291345862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:18,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:50:18,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:50:18,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007950084] [2022-11-03 03:50:18,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:18,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:50:18,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:50:18,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:50:18,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:50:18,318 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:20,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:22,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:25,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:27,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:27,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:27,691 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2022-11-03 03:50:27,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:50:27,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-03 03:50:27,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:27,701 INFO L225 Difference]: With dead ends: 50 [2022-11-03 03:50:27,702 INFO L226 Difference]: Without dead ends: 31 [2022-11-03 03:50:27,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:50:27,703 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 14 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:27,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 41 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 4 Unknown, 0 Unchecked, 9.4s Time] [2022-11-03 03:50:27,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-03 03:50:27,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2022-11-03 03:50:27,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 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 03:50:27,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2022-11-03 03:50:27,707 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 17 [2022-11-03 03:50:27,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:27,707 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2022-11-03 03:50:27,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:27,707 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-11-03 03:50:27,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:50:27,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:27,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:50:27,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:50:27,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:50:27,909 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:50:27,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:27,909 INFO L85 PathProgramCache]: Analyzing trace with hash -775977468, now seen corresponding path program 1 times [2022-11-03 03:50:27,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:50:27,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391278541] [2022-11-03 03:50:27,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:27,910 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:50:27,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:50:27,911 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:50:27,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 03:50:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:29,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 03:50:29,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:50:29,437 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 03:50:29,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:50:29,437 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:50:29,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391278541] [2022-11-03 03:50:29,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391278541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:29,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:50:29,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:50:29,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378565902] [2022-11-03 03:50:29,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:29,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:50:29,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:50:29,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:50:29,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:50:29,439 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:29,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:29,560 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2022-11-03 03:50:29,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:50:29,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-03 03:50:29,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:29,561 INFO L225 Difference]: With dead ends: 29 [2022-11-03 03:50:29,561 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 03:50:29,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:50:29,562 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:29,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 9 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 6 Unchecked, 0.0s Time] [2022-11-03 03:50:29,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 03:50:29,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 03:50:29,563 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 03:50:29,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 03:50:29,564 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2022-11-03 03:50:29,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:29,564 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 03:50:29,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:29,564 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 03:50:29,564 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 03:50:29,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 03:50:29,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 03:50:29,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:50:29,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 03:50:29,931 INFO L899 garLoopResultBuilder]: For program point L60(lines 60 75) no Hoare annotation was computed. [2022-11-03 03:50:29,931 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-03 03:50:29,932 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 70) no Hoare annotation was computed. [2022-11-03 03:50:29,932 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-03 03:50:29,932 INFO L899 garLoopResultBuilder]: For program point L61-2(lines 61 70) no Hoare annotation was computed. [2022-11-03 03:50:29,932 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 54) no Hoare annotation was computed. [2022-11-03 03:50:29,932 INFO L899 garLoopResultBuilder]: For program point L86-1(lines 86 90) no Hoare annotation was computed. [2022-11-03 03:50:29,932 INFO L895 garLoopResultBuilder]: At program point L86-2(lines 86 90) the Hoare annotation is: false [2022-11-03 03:50:29,932 INFO L902 garLoopResultBuilder]: At program point L128(lines 113 129) the Hoare annotation is: true [2022-11-03 03:50:29,933 INFO L899 garLoopResultBuilder]: For program point L54(line 54) no Hoare annotation was computed. [2022-11-03 03:50:29,933 INFO L899 garLoopResultBuilder]: For program point L54-2(line 54) no Hoare annotation was computed. [2022-11-03 03:50:29,933 INFO L899 garLoopResultBuilder]: For program point L104(lines 104 108) no Hoare annotation was computed. [2022-11-03 03:50:29,933 INFO L895 garLoopResultBuilder]: At program point L104-1(lines 97 110) the Hoare annotation is: false [2022-11-03 03:50:29,933 INFO L899 garLoopResultBuilder]: For program point L104-2(lines 104 108) no Hoare annotation was computed. [2022-11-03 03:50:29,933 INFO L899 garLoopResultBuilder]: For program point L55(lines 55 56) no Hoare annotation was computed. [2022-11-03 03:50:29,933 INFO L899 garLoopResultBuilder]: For program point L80(lines 80 83) no Hoare annotation was computed. [2022-11-03 03:50:29,933 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 75) no Hoare annotation was computed. [2022-11-03 03:50:29,933 INFO L899 garLoopResultBuilder]: For program point L72-2(lines 60 75) no Hoare annotation was computed. [2022-11-03 03:50:29,934 INFO L899 garLoopResultBuilder]: For program point L73(lines 73 74) no Hoare annotation was computed. [2022-11-03 03:50:29,934 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-03 03:50:29,934 INFO L899 garLoopResultBuilder]: For program point L123(lines 123 126) no Hoare annotation was computed. [2022-11-03 03:50:29,934 INFO L899 garLoopResultBuilder]: For program point L57(lines 57 58) no Hoare annotation was computed. [2022-11-03 03:50:29,934 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 124) no Hoare annotation was computed. [2022-11-03 03:50:29,934 INFO L899 garLoopResultBuilder]: For program point L99-1(lines 99 103) no Hoare annotation was computed. [2022-11-03 03:50:29,934 INFO L895 garLoopResultBuilder]: At program point L99-2(lines 99 103) the Hoare annotation is: false [2022-11-03 03:50:29,934 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 03:50:29,935 INFO L899 garLoopResultBuilder]: For program point L124(line 124) no Hoare annotation was computed. [2022-11-03 03:50:29,936 INFO L899 garLoopResultBuilder]: For program point L91(lines 91 95) no Hoare annotation was computed. [2022-11-03 03:50:29,936 INFO L895 garLoopResultBuilder]: At program point L91-1(lines 84 97) the Hoare annotation is: false [2022-11-03 03:50:29,937 INFO L899 garLoopResultBuilder]: For program point L91-2(lines 91 95) no Hoare annotation was computed. [2022-11-03 03:50:29,940 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 110) no Hoare annotation was computed. [2022-11-03 03:50:29,940 INFO L899 garLoopResultBuilder]: For program point L51(lines 51 52) no Hoare annotation was computed. [2022-11-03 03:50:29,941 INFO L895 garLoopResultBuilder]: At program point L109(lines 38 111) the Hoare annotation is: (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)))) (and (= ~one_exp~0 .cse0) (= |ULTIMATE.start___ieee754_expf_~x#1| (_ +zero 8 24)) (= (fp.add currentRoundingMode .cse0 (_ +zero 8 24)) |ULTIMATE.start___ieee754_expf_#res#1|) (= currentRoundingMode roundNearestTiesToEven))) [2022-11-03 03:50:29,941 INFO L899 garLoopResultBuilder]: For program point L43-1(lines 43 47) no Hoare annotation was computed. [2022-11-03 03:50:29,941 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 43 47) the Hoare annotation is: (and (= ~one_exp~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0))) (= ~huge_exp~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= |ULTIMATE.start___ieee754_expf_~x#1| (_ +zero 8 24)) (= currentRoundingMode roundNearestTiesToEven)) [2022-11-03 03:50:29,941 INFO L899 garLoopResultBuilder]: For program point L43-3(lines 43 47) no Hoare annotation was computed. [2022-11-03 03:50:29,945 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:50:29,948 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 03:50:29,958 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-03 03:50:29,965 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-03 03:50:29,967 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-03 03:50:29,967 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-03 03:50:29,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:50:29 BoogieIcfgContainer [2022-11-03 03:50:29,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 03:50:29,969 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 03:50:29,969 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 03:50:29,969 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 03:50:29,970 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:49:09" (3/4) ... [2022-11-03 03:50:29,973 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 03:50:29,987 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-03 03:50:29,987 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-03 03:50:29,988 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 03:50:29,988 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 03:50:30,026 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) && x == ~Pluszero~LONGDOUBLE()) && ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE()) == \result) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2022-11-03 03:50:30,060 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 03:50:30,061 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 03:50:30,061 INFO L158 Benchmark]: Toolchain (without parser) took 91201.50ms. Allocated memory is still 75.5MB. Free memory was 52.6MB in the beginning and 53.7MB in the end (delta: -1.1MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2022-11-03 03:50:30,062 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 56.6MB. Free memory was 36.2MB in the beginning and 36.2MB in the end (delta: 49.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:50:30,062 INFO L158 Benchmark]: CACSL2BoogieTranslator took 375.02ms. Allocated memory is still 75.5MB. Free memory was 52.3MB in the beginning and 56.2MB in the end (delta: -3.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-03 03:50:30,063 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.04ms. Allocated memory is still 75.5MB. Free memory was 56.0MB in the beginning and 54.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:50:30,063 INFO L158 Benchmark]: Boogie Preprocessor took 86.98ms. Allocated memory is still 75.5MB. Free memory was 53.9MB in the beginning and 51.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:50:30,064 INFO L158 Benchmark]: RCFGBuilder took 9702.64ms. Allocated memory is still 75.5MB. Free memory was 51.8MB in the beginning and 52.5MB in the end (delta: -773.0kB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-03 03:50:30,064 INFO L158 Benchmark]: TraceAbstraction took 80856.20ms. Allocated memory is still 75.5MB. Free memory was 51.9MB in the beginning and 30.0MB in the end (delta: 21.9MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. [2022-11-03 03:50:30,065 INFO L158 Benchmark]: Witness Printer took 91.77ms. Allocated memory is still 75.5MB. Free memory was 30.0MB in the beginning and 53.7MB in the end (delta: -23.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:50:30,069 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 56.6MB. Free memory was 36.2MB in the beginning and 36.2MB in the end (delta: 49.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 375.02ms. Allocated memory is still 75.5MB. Free memory was 52.3MB in the beginning and 56.2MB in the end (delta: -3.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.04ms. Allocated memory is still 75.5MB. Free memory was 56.0MB in the beginning and 54.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 86.98ms. Allocated memory is still 75.5MB. Free memory was 53.9MB in the beginning and 51.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 9702.64ms. Allocated memory is still 75.5MB. Free memory was 51.8MB in the beginning and 52.5MB in the end (delta: -773.0kB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 80856.20ms. Allocated memory is still 75.5MB. Free memory was 51.9MB in the beginning and 30.0MB in the end (delta: 21.9MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. * Witness Printer took 91.77ms. Allocated memory is still 75.5MB. Free memory was 30.0MB in the beginning and 53.7MB in the end (delta: -23.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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: 124]: 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 1 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 80.8s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 69.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 mSolverCounterUnknown, 85 SdHoareTripleChecker+Valid, 68.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 85 mSDsluCounter, 580 SdHoareTripleChecker+Invalid, 67.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 41 IncrementalHoareTripleChecker+Unchecked, 347 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 81 IncrementalHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 233 mSDtfsCounter, 81 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 40, 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, 8 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 10 NumberOfFragments, 50 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 5.8s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 97 ConstructedInterpolants, 14 QuantifiedInterpolants, 804 SizeOfPredicates, 42 NumberOfNonLiveVariables, 604 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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: 38]: Loop Invariant [2022-11-03 03:50:30,089 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-03 03:50:30,090 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) && x == ~Pluszero~LONGDOUBLE()) && ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE()) == \result) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 43]: Loop Invariant [2022-11-03 03:50:30,095 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-03 03:50:30,096 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) && huge_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && x == ~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 97]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2022-11-03 03:50:30,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b6fe9f-001f-484b-88f8-39c06f173783/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