./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 736ab1a5e950f94d10703cde0979d12465a57eb1332dc067f0dbd06f88e9370a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 16:02:03,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 16:02:03,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 16:02:03,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 16:02:03,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 16:02:03,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 16:02:03,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 16:02:03,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 16:02:03,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 16:02:03,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 16:02:03,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 16:02:03,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 16:02:03,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 16:02:03,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 16:02:03,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 16:02:03,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 16:02:03,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 16:02:03,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 16:02:03,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 16:02:03,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 16:02:03,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 16:02:03,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 16:02:03,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 16:02:03,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 16:02:03,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 16:02:03,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 16:02:03,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 16:02:03,552 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 16:02:03,552 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 16:02:03,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 16:02:03,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 16:02:03,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 16:02:03,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 16:02:03,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 16:02:03,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 16:02:03,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 16:02:03,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 16:02:03,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 16:02:03,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 16:02:03,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 16:02:03,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 16:02:03,560 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 16:02:03,582 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 16:02:03,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 16:02:03,583 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 16:02:03,583 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 16:02:03,584 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 16:02:03,584 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 16:02:03,584 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 16:02:03,584 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 16:02:03,585 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 16:02:03,585 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 16:02:03,585 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 16:02:03,585 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 16:02:03,585 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 16:02:03,585 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 16:02:03,586 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 16:02:03,586 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 16:02:03,586 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 16:02:03,586 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 16:02:03,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 16:02:03,587 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 16:02:03,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 16:02:03,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 16:02:03,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 16:02:03,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 16:02:03,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 16:02:03,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 16:02:03,589 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 16:02:03,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 16:02:03,589 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 16:02:03,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 16:02:03,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 16:02:03,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 16:02:03,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 16:02:03,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 16:02:03,590 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 16:02:03,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 16:02:03,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 16:02:03,591 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 16:02:03,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 16:02:03,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 16:02:03,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 16:02:03,592 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_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 736ab1a5e950f94d10703cde0979d12465a57eb1332dc067f0dbd06f88e9370a [2022-12-14 16:02:03,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 16:02:03,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 16:02:03,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 16:02:03,808 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 16:02:03,809 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 16:02:03,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2022-12-14 16:02:06,368 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 16:02:06,503 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 16:02:06,503 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2022-12-14 16:02:06,508 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/data/98a0b1a06/d0f54e4ec73a40fd9f42d9dec7ddfa57/FLAGe2c2fe1c4 [2022-12-14 16:02:06,952 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/data/98a0b1a06/d0f54e4ec73a40fd9f42d9dec7ddfa57 [2022-12-14 16:02:06,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 16:02:06,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 16:02:06,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 16:02:06,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 16:02:06,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 16:02:06,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:02:06" (1/1) ... [2022-12-14 16:02:06,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e4ff646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:06, skipping insertion in model container [2022-12-14 16:02:06,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:02:06" (1/1) ... [2022-12-14 16:02:06,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 16:02:06,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 16:02:07,096 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c[831,844] [2022-12-14 16:02:07,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:02:07,116 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 16:02:07,124 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c[831,844] [2022-12-14 16:02:07,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:02:07,138 INFO L208 MainTranslator]: Completed translation [2022-12-14 16:02:07,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:07 WrapperNode [2022-12-14 16:02:07,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 16:02:07,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 16:02:07,139 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 16:02:07,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 16:02:07,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:07" (1/1) ... [2022-12-14 16:02:07,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:07" (1/1) ... [2022-12-14 16:02:07,163 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2022-12-14 16:02:07,163 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 16:02:07,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 16:02:07,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 16:02:07,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 16:02:07,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:07" (1/1) ... [2022-12-14 16:02:07,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:07" (1/1) ... [2022-12-14 16:02:07,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:07" (1/1) ... [2022-12-14 16:02:07,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:07" (1/1) ... [2022-12-14 16:02:07,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:07" (1/1) ... [2022-12-14 16:02:07,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:07" (1/1) ... [2022-12-14 16:02:07,178 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:07" (1/1) ... [2022-12-14 16:02:07,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:07" (1/1) ... [2022-12-14 16:02:07,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 16:02:07,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 16:02:07,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 16:02:07,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 16:02:07,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:07" (1/1) ... [2022-12-14 16:02:07,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 16:02:07,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:02:07,203 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 16:02:07,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 16:02:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 16:02:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 16:02:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 16:02:07,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 16:02:07,288 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 16:02:07,290 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 16:02:07,379 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 16:02:07,406 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 16:02:07,406 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 16:02:07,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:02:07 BoogieIcfgContainer [2022-12-14 16:02:07,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 16:02:07,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 16:02:07,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 16:02:07,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 16:02:07,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:02:06" (1/3) ... [2022-12-14 16:02:07,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6ac5c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:02:07, skipping insertion in model container [2022-12-14 16:02:07,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:07" (2/3) ... [2022-12-14 16:02:07,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6ac5c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:02:07, skipping insertion in model container [2022-12-14 16:02:07,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:02:07" (3/3) ... [2022-12-14 16:02:07,415 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c [2022-12-14 16:02:07,430 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 16:02:07,430 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 16:02:07,466 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 16:02:07,471 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;@13a19f13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 16:02:07,471 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 16:02:07,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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) [2022-12-14 16:02:07,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 16:02:07,479 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:02:07,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 16:02:07,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:02:07,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:02:07,484 INFO L85 PathProgramCache]: Analyzing trace with hash 82255995, now seen corresponding path program 1 times [2022-12-14 16:02:07,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:02:07,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229817467] [2022-12-14 16:02:07,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:02:07,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:02:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 16:02:07,566 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 16:02:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 16:02:07,593 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 16:02:07,595 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 16:02:07,596 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 16:02:07,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 16:02:07,602 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 16:02:07,605 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 16:02:07,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 04:02:07 BoogieIcfgContainer [2022-12-14 16:02:07,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 16:02:07,621 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 16:02:07,621 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 16:02:07,622 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 16:02:07,622 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:02:07" (3/4) ... [2022-12-14 16:02:07,625 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 16:02:07,625 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 16:02:07,626 INFO L158 Benchmark]: Toolchain (without parser) took 666.53ms. Allocated memory was 115.3MB in the beginning and 148.9MB in the end (delta: 33.6MB). Free memory was 58.1MB in the beginning and 87.7MB in the end (delta: -29.6MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2022-12-14 16:02:07,626 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 115.3MB. Free memory is still 86.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 16:02:07,626 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.32ms. Allocated memory was 115.3MB in the beginning and 148.9MB in the end (delta: 33.6MB). Free memory was 57.9MB in the beginning and 117.1MB in the end (delta: -59.1MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2022-12-14 16:02:07,627 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.15ms. Allocated memory is still 148.9MB. Free memory was 117.1MB in the beginning and 115.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 16:02:07,627 INFO L158 Benchmark]: Boogie Preprocessor took 15.64ms. Allocated memory is still 148.9MB. Free memory was 115.5MB in the beginning and 114.6MB in the end (delta: 918.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 16:02:07,627 INFO L158 Benchmark]: RCFGBuilder took 228.48ms. Allocated memory is still 148.9MB. Free memory was 114.6MB in the beginning and 102.4MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 16:02:07,628 INFO L158 Benchmark]: TraceAbstraction took 210.70ms. Allocated memory is still 148.9MB. Free memory was 102.0MB in the beginning and 88.3MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 16:02:07,628 INFO L158 Benchmark]: Witness Printer took 3.33ms. Allocated memory is still 148.9MB. Free memory was 88.3MB in the beginning and 87.7MB in the end (delta: 587.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 16:02:07,630 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 115.3MB. Free memory is still 86.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 177.32ms. Allocated memory was 115.3MB in the beginning and 148.9MB in the end (delta: 33.6MB). Free memory was 57.9MB in the beginning and 117.1MB in the end (delta: -59.1MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.15ms. Allocated memory is still 148.9MB. Free memory was 117.1MB in the beginning and 115.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.64ms. Allocated memory is still 148.9MB. Free memory was 115.5MB in the beginning and 114.6MB in the end (delta: 918.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 228.48ms. Allocated memory is still 148.9MB. Free memory was 114.6MB in the beginning and 102.4MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 210.70ms. Allocated memory is still 148.9MB. Free memory was 102.0MB in the beginning and 88.3MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 3.33ms. Allocated memory is still 148.9MB. Free memory was 88.3MB in the beginning and 87.7MB in the end (delta: 587.3kB). 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: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticDOUBLEoperation at line 44, overapproximation of someUnaryDOUBLEoperation at line 32, overapproximation of someBinaryDOUBLEComparisonOperation at line 55. Possible FailurePath: [L22] double _EPS = 1e-6; [L49] double d, r; [L51] d = 1. VAL [_EPS=1/1000000, d=1] [L51] COND TRUE d <= 20. [L53] CALL, EXPR SqrtR(d) [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; [L28] COND FALSE !(Input <= 1.0) [L28] xn = 1.0/Input [L29] xnp1 = xn [L30] residu = 2.0*_EPS*(xn+xnp1) [L31] lsup = _EPS * (xn+xnp1) [L32] linf = -lsup [L33] cond = ((residu > lsup) || (residu < linf)) [L34] i = 0 VAL [\old(Input)=1, _EPS=1/1000000, cond=0, i=0, Input=1, xn=1, xn=1] [L35] COND FALSE !(\read(cond)) [L44] return 1.0 / xnp1; [L53] RET, EXPR SqrtR(d) [L53] r = SqrtR(d) [L55] CALL __VERIFIER_assert(r >= 1.0 && r <= 5.0) [L20] COND TRUE !(cond) VAL [\old(cond)=0, _EPS=1/1000000, cond=0] [L20] reach_error() VAL [\old(cond)=0, _EPS=1/1000000, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2022-12-14 16:02:07,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/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_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 736ab1a5e950f94d10703cde0979d12465a57eb1332dc067f0dbd06f88e9370a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 16:02:09,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 16:02:09,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 16:02:09,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 16:02:09,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 16:02:09,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 16:02:09,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 16:02:09,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 16:02:09,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 16:02:09,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 16:02:09,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 16:02:09,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 16:02:09,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 16:02:09,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 16:02:09,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 16:02:09,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 16:02:09,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 16:02:09,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 16:02:09,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 16:02:09,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 16:02:09,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 16:02:09,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 16:02:09,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 16:02:09,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 16:02:09,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 16:02:09,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 16:02:09,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 16:02:09,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 16:02:09,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 16:02:09,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 16:02:09,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 16:02:09,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 16:02:09,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 16:02:09,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 16:02:09,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 16:02:09,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 16:02:09,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 16:02:09,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 16:02:09,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 16:02:09,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 16:02:09,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 16:02:09,601 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 16:02:09,616 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 16:02:09,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 16:02:09,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 16:02:09,616 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 16:02:09,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 16:02:09,617 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 16:02:09,617 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 16:02:09,617 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 16:02:09,617 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 16:02:09,617 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 16:02:09,617 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 16:02:09,618 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 16:02:09,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 16:02:09,618 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 16:02:09,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 16:02:09,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 16:02:09,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 16:02:09,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 16:02:09,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 16:02:09,619 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 16:02:09,619 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 16:02:09,619 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 16:02:09,619 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 16:02:09,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 16:02:09,619 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 16:02:09,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 16:02:09,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 16:02:09,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 16:02:09,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 16:02:09,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 16:02:09,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 16:02:09,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 16:02:09,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 16:02:09,620 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 16:02:09,620 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 16:02:09,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 16:02:09,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 16:02:09,620 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 16:02:09,621 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_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 736ab1a5e950f94d10703cde0979d12465a57eb1332dc067f0dbd06f88e9370a [2022-12-14 16:02:09,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 16:02:09,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 16:02:09,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 16:02:09,848 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 16:02:09,848 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 16:02:09,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2022-12-14 16:02:12,508 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 16:02:12,656 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 16:02:12,656 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2022-12-14 16:02:12,662 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/data/d779d93ca/906ee7f6c1d44b0aaff2e30fdf6d6723/FLAG519f8f752 [2022-12-14 16:02:12,675 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/data/d779d93ca/906ee7f6c1d44b0aaff2e30fdf6d6723 [2022-12-14 16:02:12,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 16:02:12,679 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 16:02:12,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 16:02:12,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 16:02:12,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 16:02:12,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:02:12" (1/1) ... [2022-12-14 16:02:12,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17c32b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:12, skipping insertion in model container [2022-12-14 16:02:12,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:02:12" (1/1) ... [2022-12-14 16:02:12,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 16:02:12,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 16:02:12,814 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c[831,844] [2022-12-14 16:02:12,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:02:12,838 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 16:02:12,847 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c[831,844] [2022-12-14 16:02:12,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:02:12,862 INFO L208 MainTranslator]: Completed translation [2022-12-14 16:02:12,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:12 WrapperNode [2022-12-14 16:02:12,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 16:02:12,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 16:02:12,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 16:02:12,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 16:02:12,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:12" (1/1) ... [2022-12-14 16:02:12,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:12" (1/1) ... [2022-12-14 16:02:12,898 INFO L138 Inliner]: procedures = 16, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-12-14 16:02:12,898 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 16:02:12,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 16:02:12,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 16:02:12,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 16:02:12,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:12" (1/1) ... [2022-12-14 16:02:12,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:12" (1/1) ... [2022-12-14 16:02:12,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:12" (1/1) ... [2022-12-14 16:02:12,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:12" (1/1) ... [2022-12-14 16:02:12,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:12" (1/1) ... [2022-12-14 16:02:12,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:12" (1/1) ... [2022-12-14 16:02:12,926 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:12" (1/1) ... [2022-12-14 16:02:12,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:12" (1/1) ... [2022-12-14 16:02:12,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 16:02:12,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 16:02:12,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 16:02:12,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 16:02:12,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:12" (1/1) ... [2022-12-14 16:02:12,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 16:02:12,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:02:12,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 16:02:12,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 16:02:12,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 16:02:12,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 16:02:12,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 16:02:12,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 16:02:13,056 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 16:02:13,058 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 16:02:22,068 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 16:02:22,073 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 16:02:22,073 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 16:02:22,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:02:22 BoogieIcfgContainer [2022-12-14 16:02:22,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 16:02:22,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 16:02:22,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 16:02:22,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 16:02:22,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:02:12" (1/3) ... [2022-12-14 16:02:22,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:02:22, skipping insertion in model container [2022-12-14 16:02:22,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:02:12" (2/3) ... [2022-12-14 16:02:22,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:02:22, skipping insertion in model container [2022-12-14 16:02:22,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:02:22" (3/3) ... [2022-12-14 16:02:22,081 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c [2022-12-14 16:02:22,094 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 16:02:22,095 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 16:02:22,126 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 16:02:22,131 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;@7319ee69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 16:02:22,131 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 16:02:22,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 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) [2022-12-14 16:02:22,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 16:02:22,138 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:02:22,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:02:22,139 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:02:22,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:02:22,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1706227183, now seen corresponding path program 1 times [2022-12-14 16:02:22,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 16:02:22,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233727303] [2022-12-14 16:02:22,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:02:22,151 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 16:02:22,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 16:02:22,153 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 16:02:22,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 16:02:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:02:23,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 16:02:23,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:02:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:02:24,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:02:24,050 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 16:02:24,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233727303] [2022-12-14 16:02:24,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233727303] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:02:24,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:02:24,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 16:02:24,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415944624] [2022-12-14 16:02:24,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:02:24,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 16:02:24,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 16:02:24,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 16:02:24,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 16:02:24,098 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 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 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-12-14 16:02:26,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 16:02:29,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 16:02:32,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 16:02:35,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 16:02:37,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 16:02:37,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:02:37,859 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2022-12-14 16:02:37,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 16:02:37,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2022-12-14 16:02:37,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:02:37,872 INFO L225 Difference]: With dead ends: 40 [2022-12-14 16:02:37,873 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 16:02:37,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 16:02:37,879 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-12-14 16:02:37,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 34 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 13.7s Time] [2022-12-14 16:02:37,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 16:02:37,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-14 16:02:37,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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) [2022-12-14 16:02:37,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-12-14 16:02:37,907 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 10 [2022-12-14 16:02:37,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:02:37,907 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-12-14 16:02:37,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-12-14 16:02:37,907 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-12-14 16:02:37,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 16:02:37,907 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:02:37,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:02:37,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 16:02:38,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 16:02:38,108 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:02:38,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:02:38,109 INFO L85 PathProgramCache]: Analyzing trace with hash 68780179, now seen corresponding path program 1 times [2022-12-14 16:02:38,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 16:02:38,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154617710] [2022-12-14 16:02:38,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:02:38,110 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 16:02:38,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 16:02:38,110 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 16:02:38,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 16:02:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:02:40,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 16:02:40,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:02:40,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:02:40,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 16:02:40,318 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 16:02:40,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154617710] [2022-12-14 16:02:40,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154617710] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:02:40,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:02:40,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 16:02:40,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708568748] [2022-12-14 16:02:40,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:02:40,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 16:02:40,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 16:02:40,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 16:02:40,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 16:02:40,321 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-12-14 16:02:42,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 16:02:45,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 16:02:47,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 16:02:50,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 16:02:54,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 16:02:56,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 16:02:59,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 16:03:01,074 WARN L539 Checker$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 [] [2022-12-14 16:03:01,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:03:01,074 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2022-12-14 16:03:01,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 16:03:01,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2022-12-14 16:03:01,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:03:01,158 INFO L225 Difference]: With dead ends: 28 [2022-12-14 16:03:01,158 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 16:03:01,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 16:03:01,160 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2022-12-14 16:03:01,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 23 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 8 Unknown, 0 Unchecked, 20.6s Time] [2022-12-14 16:03:01,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 16:03:01,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-14 16:03:01,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 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) [2022-12-14 16:03:01,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-12-14 16:03:01,165 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2022-12-14 16:03:01,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:03:01,165 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-12-14 16:03:01,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-12-14 16:03:01,165 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-12-14 16:03:01,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 16:03:01,166 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:03:01,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:03:01,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 16:03:01,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 16:03:01,368 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:03:01,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:03:01,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1301780435, now seen corresponding path program 1 times [2022-12-14 16:03:01,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 16:03:01,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883016012] [2022-12-14 16:03:01,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:03:01,372 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 16:03:01,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 16:03:01,375 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 16:03:01,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-14 16:03:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:03:04,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 16:03:04,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:03:22,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:03:22,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:03:33,221 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from false [2022-12-14 16:03:35,434 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from true [2022-12-14 16:03:51,472 WARN L233 SmtUtils]: Spent 6.19s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 16:03:57,656 WARN L233 SmtUtils]: Spent 6.18s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 16:04:00,235 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from false [2022-12-14 16:04:02,789 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|) |c_ULTIMATE.start_SqrtR_~xn~0#1|))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0))))) is different from true [2022-12-14 16:04:09,052 WARN L233 SmtUtils]: Spent 6.26s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 16:04:15,265 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 16:04:20,819 WARN L233 SmtUtils]: Spent 5.55s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 16:04:26,340 WARN L233 SmtUtils]: Spent 5.52s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 16:04:28,739 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 .cse1)))) is different from false [2022-12-14 16:04:31,125 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~Input#1| .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_SqrtR_~Input#1|) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 .cse1)))) is different from true [2022-12-14 16:04:36,675 WARN L233 SmtUtils]: Spent 5.55s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 16:04:42,168 WARN L233 SmtUtils]: Spent 5.49s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 16:04:44,555 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~d~0#1| .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_main_~d~0#1|) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 .cse1)))) is different from false [2022-12-14 16:04:46,921 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 15.0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~d~0#1| .cse1) .cse1) (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) |c_ULTIMATE.start_main_~d~0#1|) .cse1) .cse1))))) ((_ to_fp 11 53) c_currentRoundingMode 8.0))))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 .cse1)))) is different from true [2022-12-14 16:04:46,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-14 16:04:46,962 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 16:04:46,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883016012] [2022-12-14 16:04:46,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883016012] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:04:46,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1950286501] [2022-12-14 16:04:46,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:04:46,962 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 16:04:46,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 16:04:46,963 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 16:04:46,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2022-12-14 16:04:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:04:54,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 16:04:54,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:05:03,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:05:03,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:05:27,443 WARN L837 $PredicateComparison]: unable to prove that (or (not (= |c_ULTIMATE.start_SqrtR_~cond~0#1| (_ bv0 32))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)))))) is different from false [2022-12-14 16:05:29,665 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c_ULTIMATE.start_SqrtR_~cond~0#1| (_ bv0 32))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (and (fp.geq .cse0 .cse1) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)))))) is different from true [2022-12-14 16:05:35,980 WARN L233 SmtUtils]: Spent 6.31s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 16:05:42,270 WARN L233 SmtUtils]: Spent 6.29s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 16:05:48,603 WARN L233 SmtUtils]: Spent 6.29s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 16:05:54,878 WARN L233 SmtUtils]: Spent 6.27s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 16:06:00,428 WARN L233 SmtUtils]: Spent 5.55s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 16:06:05,956 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 16:06:11,523 WARN L233 SmtUtils]: Spent 5.56s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 16:06:17,068 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 16:06:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-14 16:06:17,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1950286501] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:06:17,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123160334] [2022-12-14 16:06:17,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:06:17,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:06:17,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:06:17,104 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 16:06:17,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 16:09:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:09:36,237 WARN L261 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 16:09:36,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 16:10:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:10:26,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:10:56,289 WARN L233 SmtUtils]: Spent 6.71s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 16:10:58,343 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: line 10351 column 7: push canceled [2022-12-14 16:10:58,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2022-12-14 16:10:58,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9, 9] total 17 [2022-12-14 16:10:58,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337014850] [2022-12-14 16:10:58,344 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2022-12-14 16:10:58,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 16:10:58,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 16:10:58,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 16:10:58,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=228, Unknown=24, NotChecked=180, Total=506 [2022-12-14 16:10:58,345 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 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) [2022-12-14 16:11:00,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:11:02,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:11:04,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:11:06,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:11:08,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:11:10,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:11:12,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 16:11:14,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 16:11:16,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 16:11:17,933 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-12-14 16:11:17,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-12-14 16:11:17,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 94.0s TimeCoverageRelationStatistics Valid=74, Invalid=228, Unknown=24, NotChecked=180, Total=506 [2022-12-14 16:11:17,935 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2022-12-14 16:11:17,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 9 Unknown, 6 Unchecked, 18.4s Time] [2022-12-14 16:11:17,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-14 16:11:18,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2022-12-14 16:11:18,537 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2022-12-14 16:11:18,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2022-12-14 16:11:18,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 16:11:18,614 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:314) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:665) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:365) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 36 more [2022-12-14 16:11:18,617 INFO L158 Benchmark]: Toolchain (without parser) took 545938.28ms. Allocated memory is still 77.6MB. Free memory was 47.7MB in the beginning and 38.1MB in the end (delta: 9.6MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2022-12-14 16:11:18,617 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 48.2MB. Free memory was 26.9MB in the beginning and 26.8MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 16:11:18,617 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.54ms. Allocated memory is still 77.6MB. Free memory was 47.5MB in the beginning and 36.3MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 16:11:18,617 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.69ms. Allocated memory is still 77.6MB. Free memory was 36.1MB in the beginning and 58.3MB in the end (delta: -22.2MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2022-12-14 16:11:18,617 INFO L158 Benchmark]: Boogie Preprocessor took 31.66ms. Allocated memory is still 77.6MB. Free memory was 58.3MB in the beginning and 56.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 16:11:18,618 INFO L158 Benchmark]: RCFGBuilder took 9143.09ms. Allocated memory is still 77.6MB. Free memory was 56.9MB in the beginning and 46.0MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 16:11:18,618 INFO L158 Benchmark]: TraceAbstraction took 536540.06ms. Allocated memory is still 77.6MB. Free memory was 45.4MB in the beginning and 38.1MB in the end (delta: 7.4MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2022-12-14 16:11:18,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 48.2MB. Free memory was 26.9MB in the beginning and 26.8MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 182.54ms. Allocated memory is still 77.6MB. Free memory was 47.5MB in the beginning and 36.3MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.69ms. Allocated memory is still 77.6MB. Free memory was 36.1MB in the beginning and 58.3MB in the end (delta: -22.2MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.66ms. Allocated memory is still 77.6MB. Free memory was 58.3MB in the beginning and 56.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 9143.09ms. Allocated memory is still 77.6MB. Free memory was 56.9MB in the beginning and 46.0MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 536540.06ms. Allocated memory is still 77.6MB. Free memory was 45.4MB in the beginning and 38.1MB in the end (delta: 7.4MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:314) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad3a5b4-5ae0-4a96-a61f-4ee9284f35b8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken