./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0910a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0910a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW --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 f4e9a719a3106c16c930419cff190e7ac0626fe0942a2ec34e31771419d648d5 --- 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-4e7fbc6 [2022-11-23 13:52:42,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:52:42,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:52:42,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:52:42,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:52:42,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:52:42,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:52:42,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:52:42,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:52:42,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:52:42,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:52:42,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:52:42,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:52:42,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:52:42,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:52:42,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:52:42,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:52:42,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:52:42,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:52:42,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:52:42,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:52:42,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:52:42,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:52:42,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:52:42,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:52:42,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:52:42,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:52:42,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:52:42,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:52:42,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:52:42,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:52:42,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:52:42,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:52:42,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:52:42,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:52:42,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:52:42,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:52:42,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:52:42,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:52:42,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:52:42,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:52:42,666 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 13:52:42,712 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:52:42,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:52:42,714 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:52:42,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:52:42,715 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:52:42,715 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:52:42,715 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:52:42,716 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:52:42,716 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:52:42,716 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:52:42,717 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:52:42,717 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:52:42,718 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:52:42,718 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:52:42,718 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:52:42,719 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:52:42,719 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:52:42,719 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:52:42,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:52:42,720 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 13:52:42,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:52:42,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 13:52:42,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:52:42,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:52:42,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:52:42,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:52:42,722 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 13:52:42,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:52:42,723 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:52:42,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:52:42,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:52:42,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:52:42,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:52:42,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:52:42,725 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:52:42,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:52:42,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:52:42,725 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:52:42,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:52:42,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:52:42,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:52:42,726 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_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e9a719a3106c16c930419cff190e7ac0626fe0942a2ec34e31771419d648d5 [2022-11-23 13:52:43,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:52:43,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:52:43,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:52:43,158 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:52:43,159 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:52:43,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/float-newlib/double_req_bl_0910a.c [2022-11-23 13:52:46,323 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:52:46,566 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:52:46,567 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/sv-benchmarks/c/float-newlib/double_req_bl_0910a.c [2022-11-23 13:52:46,579 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/data/e4368a49c/4caab42041a142ac956e2398ceaf5221/FLAG3fea12b36 [2022-11-23 13:52:46,608 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/data/e4368a49c/4caab42041a142ac956e2398ceaf5221 [2022-11-23 13:52:46,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:52:46,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:52:46,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:52:46,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:52:46,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:52:46,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:46" (1/1) ... [2022-11-23 13:52:46,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@624f9998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:46, skipping insertion in model container [2022-11-23 13:52:46,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:46" (1/1) ... [2022-11-23 13:52:46,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:52:46,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:52:46,988 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_153676b2-c8df-41f6-bf92-7b8516e22d9e/sv-benchmarks/c/float-newlib/double_req_bl_0910a.c[3598,3611] [2022-11-23 13:52:46,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:52:47,015 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:52:47,065 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_153676b2-c8df-41f6-bf92-7b8516e22d9e/sv-benchmarks/c/float-newlib/double_req_bl_0910a.c[3598,3611] [2022-11-23 13:52:47,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:52:47,086 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:52:47,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:47 WrapperNode [2022-11-23 13:52:47,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:52:47,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:52:47,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:52:47,088 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:52:47,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:47" (1/1) ... [2022-11-23 13:52:47,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:47" (1/1) ... [2022-11-23 13:52:47,139 INFO L138 Inliner]: procedures = 17, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 164 [2022-11-23 13:52:47,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:52:47,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:52:47,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:52:47,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:52:47,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:47" (1/1) ... [2022-11-23 13:52:47,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:47" (1/1) ... [2022-11-23 13:52:47,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:47" (1/1) ... [2022-11-23 13:52:47,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:47" (1/1) ... [2022-11-23 13:52:47,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:47" (1/1) ... [2022-11-23 13:52:47,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:47" (1/1) ... [2022-11-23 13:52:47,174 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:47" (1/1) ... [2022-11-23 13:52:47,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:47" (1/1) ... [2022-11-23 13:52:47,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:52:47,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:52:47,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:52:47,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:52:47,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:47" (1/1) ... [2022-11-23 13:52:47,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:52:47,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:52:47,237 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:52:47,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:52:47,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:52:47,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:52:47,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:52:47,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-23 13:52:47,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 13:52:47,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-23 13:52:47,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:52:47,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:52:47,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 13:52:47,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:52:47,369 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:52:47,371 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:52:47,770 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:52:47,863 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:52:47,863 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-23 13:52:47,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:47 BoogieIcfgContainer [2022-11-23 13:52:47,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:52:47,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:52:47,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:52:47,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:52:47,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:52:46" (1/3) ... [2022-11-23 13:52:47,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9a4424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:47, skipping insertion in model container [2022-11-23 13:52:47,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:47" (2/3) ... [2022-11-23 13:52:47,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9a4424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:47, skipping insertion in model container [2022-11-23 13:52:47,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:47" (3/3) ... [2022-11-23 13:52:47,877 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0910a.c [2022-11-23 13:52:47,900 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:52:47,900 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 13:52:47,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:52:47,970 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;@1f83a831, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:52:47,970 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 13:52:47,976 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.7) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:52:47,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 13:52:47,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:47,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:52:47,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:52:47,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:47,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1544195697, now seen corresponding path program 1 times [2022-11-23 13:52:48,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:52:48,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209246029] [2022-11-23 13:52:48,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:48,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:52:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:52:48,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:52:48,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:52:48,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209246029] [2022-11-23 13:52:48,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209246029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:52:48,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:52:48,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:52:48,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067541352] [2022-11-23 13:52:48,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:52:48,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 13:52:48,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:52:48,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 13:52:48,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 13:52:48,260 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.7) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2022-11-23 13:52:48,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:52:48,324 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2022-11-23 13:52:48,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 13:52:48,327 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 [2022-11-23 13:52:48,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:52:48,338 INFO L225 Difference]: With dead ends: 43 [2022-11-23 13:52:48,339 INFO L226 Difference]: Without dead ends: 20 [2022-11-23 13:52:48,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 13:52:48,350 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:52:48,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:52:48,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-23 13:52:48,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-23 13:52:48,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:52:48,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-11-23 13:52:48,393 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 10 [2022-11-23 13:52:48,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:52:48,394 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-11-23 13:52:48,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2022-11-23 13:52:48,395 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-11-23 13:52:48,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 13:52:48,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:48,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:52:48,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:52:48,398 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:52:48,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:48,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1170194359, now seen corresponding path program 1 times [2022-11-23 13:52:48,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:52:48,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279423381] [2022-11-23 13:52:48,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:48,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:52:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 13:52:48,699 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 13:52:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 13:52:48,959 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 13:52:48,960 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 13:52:48,962 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 13:52:48,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:52:48,968 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 13:52:48,972 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 13:52:49,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:52:49 BoogieIcfgContainer [2022-11-23 13:52:49,004 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 13:52:49,004 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 13:52:49,005 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 13:52:49,005 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 13:52:49,006 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:47" (3/4) ... [2022-11-23 13:52:49,009 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 13:52:49,010 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 13:52:49,010 INFO L158 Benchmark]: Toolchain (without parser) took 2396.92ms. Allocated memory is still 155.2MB. Free memory was 110.5MB in the beginning and 88.2MB in the end (delta: 22.3MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2022-11-23 13:52:49,011 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory was 78.0MB in the beginning and 77.9MB in the end (delta: 82.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:52:49,012 INFO L158 Benchmark]: CACSL2BoogieTranslator took 468.26ms. Allocated memory is still 155.2MB. Free memory was 110.5MB in the beginning and 120.2MB in the end (delta: -9.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-23 13:52:49,013 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.85ms. Allocated memory is still 155.2MB. Free memory was 119.5MB in the beginning and 117.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 13:52:49,013 INFO L158 Benchmark]: Boogie Preprocessor took 38.76ms. Allocated memory is still 155.2MB. Free memory was 117.4MB in the beginning and 115.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 13:52:49,014 INFO L158 Benchmark]: RCFGBuilder took 686.55ms. Allocated memory is still 155.2MB. Free memory was 115.3MB in the beginning and 90.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-23 13:52:49,015 INFO L158 Benchmark]: TraceAbstraction took 1134.68ms. Allocated memory is still 155.2MB. Free memory was 89.5MB in the beginning and 88.2MB in the end (delta: 1.3MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2022-11-23 13:52:49,015 INFO L158 Benchmark]: Witness Printer took 5.32ms. Allocated memory is still 155.2MB. Free memory is still 88.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:52:49,018 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory was 78.0MB in the beginning and 77.9MB in the end (delta: 82.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 468.26ms. Allocated memory is still 155.2MB. Free memory was 110.5MB in the beginning and 120.2MB in the end (delta: -9.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.85ms. Allocated memory is still 155.2MB. Free memory was 119.5MB in the beginning and 117.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.76ms. Allocated memory is still 155.2MB. Free memory was 117.4MB in the beginning and 115.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 686.55ms. Allocated memory is still 155.2MB. Free memory was 115.3MB in the beginning and 90.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1134.68ms. Allocated memory is still 155.2MB. Free memory was 89.5MB in the beginning and 88.2MB in the end (delta: 1.3MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. * Witness Printer took 5.32ms. Allocated memory is still 155.2MB. Free memory is still 88.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 139]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 29, overapproximation of someBinaryArithmeticDOUBLEoperation at line 62, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; [L134] double x = 0.0; [L135] CALL, EXPR __ieee754_log(x) [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, unknown-#in~x-unknown=0, x=0, zero=0] [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 VAL [hx=7, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, lx=0, two54_log=18014398509481984, unknown-#in~x-unknown=0, x=0, zero=0] [L60] COND TRUE hx < 0x00100000 VAL [hx=7, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, lx=0, two54_log=18014398509481984, unknown-#in~x-unknown=0, x=0, zero=0] [L61] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L62] return -two54_log / zero; VAL [hx=7, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, lx=0, two54_log=18014398509481984, unknown-#in~x-unknown=0, x=0, zero=0] [L135] RET, EXPR __ieee754_log(x) [L135] double res = __ieee754_log(x); [L138] CALL, EXPR isinf_double(res) [L21] __int32_t hx, lx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, unknown-#in~x-unknown=18014398509481995, x=18014398509481995, zero=0] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (hx) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lx) = ew_u.parts.lsw [L28] hx &= 0x7fffffff [L29] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L30] hx = 0x7ff00000 - hx [L31] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L138] RET, EXPR isinf_double(res) [L138] COND TRUE !isinf_double(res) [L139] reach_error() VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, res=18014398509481995, two54_log=18014398509481984, x=0, zero=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 21 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 13:52:49,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0910a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW --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 f4e9a719a3106c16c930419cff190e7ac0626fe0942a2ec34e31771419d648d5 --- 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-4e7fbc6 [2022-11-23 13:52:51,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:52:51,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:52:51,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:52:51,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:52:51,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:52:51,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:52:51,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:52:51,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:52:51,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:52:51,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:52:51,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:52:51,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:52:51,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:52:51,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:52:51,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:52:51,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:52:51,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:52:51,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:52:51,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:52:51,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:52:51,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:52:51,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:52:51,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:52:51,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:52:51,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:52:51,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:52:51,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:52:51,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:52:51,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:52:51,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:52:51,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:52:51,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:52:51,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:52:51,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:52:51,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:52:51,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:52:51,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:52:51,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:52:51,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:52:51,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:52:51,869 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-23 13:52:51,905 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:52:51,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:52:51,907 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:52:51,907 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:52:51,908 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:52:51,909 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:52:51,909 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:52:51,909 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:52:51,909 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:52:51,910 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:52:51,911 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:52:51,911 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:52:51,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:52:51,912 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 13:52:51,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 13:52:51,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:52:51,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:52:51,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:52:51,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:52:51,914 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 13:52:51,914 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 13:52:51,914 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 13:52:51,914 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 13:52:51,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:52:51,915 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:52:51,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:52:51,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:52:51,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 13:52:51,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:52:51,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:52:51,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:52:51,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:52:51,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:52:51,917 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 13:52:51,917 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 13:52:51,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:52:51,918 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:52:51,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 13:52:51,918 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_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e9a719a3106c16c930419cff190e7ac0626fe0942a2ec34e31771419d648d5 [2022-11-23 13:52:52,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:52:52,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:52:52,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:52:52,363 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:52:52,364 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:52:52,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/float-newlib/double_req_bl_0910a.c [2022-11-23 13:52:55,540 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:52:55,780 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:52:55,780 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/sv-benchmarks/c/float-newlib/double_req_bl_0910a.c [2022-11-23 13:52:55,793 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/data/8365c7420/6db42ce464524a869578370fedb643ed/FLAGdc304d580 [2022-11-23 13:52:55,825 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/data/8365c7420/6db42ce464524a869578370fedb643ed [2022-11-23 13:52:55,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:52:55,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:52:55,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:52:55,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:52:55,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:52:55,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:55" (1/1) ... [2022-11-23 13:52:55,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ad24ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:55, skipping insertion in model container [2022-11-23 13:52:55,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:55" (1/1) ... [2022-11-23 13:52:55,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:52:55,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:52:56,161 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_153676b2-c8df-41f6-bf92-7b8516e22d9e/sv-benchmarks/c/float-newlib/double_req_bl_0910a.c[3598,3611] [2022-11-23 13:52:56,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:52:56,201 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:52:56,274 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_153676b2-c8df-41f6-bf92-7b8516e22d9e/sv-benchmarks/c/float-newlib/double_req_bl_0910a.c[3598,3611] [2022-11-23 13:52:56,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:52:56,307 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:52:56,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56 WrapperNode [2022-11-23 13:52:56,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:52:56,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:52:56,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:52:56,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:52:56,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56" (1/1) ... [2022-11-23 13:52:56,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56" (1/1) ... [2022-11-23 13:52:56,389 INFO L138 Inliner]: procedures = 20, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 164 [2022-11-23 13:52:56,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:52:56,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:52:56,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:52:56,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:52:56,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56" (1/1) ... [2022-11-23 13:52:56,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56" (1/1) ... [2022-11-23 13:52:56,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56" (1/1) ... [2022-11-23 13:52:56,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56" (1/1) ... [2022-11-23 13:52:56,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56" (1/1) ... [2022-11-23 13:52:56,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56" (1/1) ... [2022-11-23 13:52:56,454 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56" (1/1) ... [2022-11-23 13:52:56,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56" (1/1) ... [2022-11-23 13:52:56,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:52:56,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:52:56,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:52:56,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:52:56,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56" (1/1) ... [2022-11-23 13:52:56,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:52:56,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:52:56,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:52:56,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:52:56,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:52:56,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2022-11-23 13:52:56,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-11-23 13:52:56,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 13:52:56,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:52:56,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 13:52:56,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:52:56,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:52:56,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 13:52:56,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:52:56,715 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:52:56,717 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:53:19,964 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:53:19,971 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:53:19,971 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-23 13:53:19,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:53:19 BoogieIcfgContainer [2022-11-23 13:53:19,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:53:19,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:53:19,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:53:19,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:53:19,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:52:55" (1/3) ... [2022-11-23 13:53:19,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79334a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:53:19, skipping insertion in model container [2022-11-23 13:53:19,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:56" (2/3) ... [2022-11-23 13:53:19,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79334a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:53:19, skipping insertion in model container [2022-11-23 13:53:19,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:53:19" (3/3) ... [2022-11-23 13:53:19,987 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0910a.c [2022-11-23 13:53:20,011 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:53:20,012 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 13:53:20,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:53:20,091 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;@2c1f73dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:53:20,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 13:53:20,098 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.7) internal successors, (51), 31 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:53:20,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 13:53:20,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:53:20,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:53:20,108 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:53:20,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:53:20,117 INFO L85 PathProgramCache]: Analyzing trace with hash -2110731690, now seen corresponding path program 1 times [2022-11-23 13:53:20,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:53:20,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892322084] [2022-11-23 13:53:20,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:53:20,134 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 [2022-11-23 13:53:20,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:53:20,141 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 13:53:20,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 13:53:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:53:21,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 13:53:21,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:53:21,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:53:21,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:53:21,155 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 13:53:21,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892322084] [2022-11-23 13:53:21,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892322084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:53:21,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:53:21,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:53:21,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726999128] [2022-11-23 13:53:21,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:53:21,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 13:53:21,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 13:53:21,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 13:53:21,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 13:53:21,198 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.7) internal successors, (51), 31 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:53:21,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:53:21,223 INFO L93 Difference]: Finished difference Result 62 states and 100 transitions. [2022-11-23 13:53:21,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 13:53:21,225 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-23 13:53:21,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:53:21,234 INFO L225 Difference]: With dead ends: 62 [2022-11-23 13:53:21,235 INFO L226 Difference]: Without dead ends: 29 [2022-11-23 13:53:21,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 13:53:21,242 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:53:21,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:53:21,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-23 13:53:21,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-23 13:53:21,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:53:21,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2022-11-23 13:53:21,281 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 12 [2022-11-23 13:53:21,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:53:21,282 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2022-11-23 13:53:21,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:53:21,283 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2022-11-23 13:53:21,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 13:53:21,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:53:21,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:53:21,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 13:53:21,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 13:53:21,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:53:21,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:53:21,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1825265086, now seen corresponding path program 1 times [2022-11-23 13:53:21,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:53:21,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206646142] [2022-11-23 13:53:21,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:53:21,502 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 [2022-11-23 13:53:21,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:53:21,503 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 13:53:21,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 13:53:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:53:22,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 13:53:22,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:53:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:53:25,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:53:25,138 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 13:53:25,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206646142] [2022-11-23 13:53:25,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206646142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:53:25,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:53:25,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 13:53:25,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527447938] [2022-11-23 13:53:25,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:53:25,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 13:53:25,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 13:53:25,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 13:53:25,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-23 13:53:25,143 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:53:31,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:53:36,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:53:44,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.70s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:53:47,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:53:50,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:53:52,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:53:55,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 13:53:57,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:53:59,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 13:54:01,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:54:04,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 13:54:06,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:54:09,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 13:54:11,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:54:13,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 13:54:15,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:54:15,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:54:15,450 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2022-11-23 13:54:15,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 13:54:15,452 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 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 14 [2022-11-23 13:54:15,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:54:15,453 INFO L225 Difference]: With dead ends: 45 [2022-11-23 13:54:15,453 INFO L226 Difference]: Without dead ends: 37 [2022-11-23 13:54:15,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-23 13:54:15,455 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 37 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:54:15,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 154 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 14 Unknown, 0 Unchecked, 48.0s Time] [2022-11-23 13:54:15,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-23 13:54:15,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2022-11-23 13:54:15,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:54:15,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2022-11-23 13:54:15,465 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 14 [2022-11-23 13:54:15,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:54:15,466 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2022-11-23 13:54:15,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:54:15,466 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2022-11-23 13:54:15,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 13:54:15,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:54:15,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:54:15,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 13:54:15,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 13:54:15,678 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:54:15,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:54:15,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2016616349, now seen corresponding path program 1 times [2022-11-23 13:54:15,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:54:15,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285815059] [2022-11-23 13:54:15,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:54:15,680 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 [2022-11-23 13:54:15,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:54:15,683 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 13:54:15,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 13:54:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:54:15,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 13:54:15,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:54:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:54:16,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:54:16,525 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 13:54:16,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285815059] [2022-11-23 13:54:16,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285815059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:54:16,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:54:16,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:54:16,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260721315] [2022-11-23 13:54:16,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:54:16,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:54:16,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 13:54:16,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:54:16,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:54:16,528 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:54:23,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 13:54:23,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:54:23,332 INFO L93 Difference]: Finished difference Result 48 states and 64 transitions. [2022-11-23 13:54:23,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:54:23,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2022-11-23 13:54:23,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:54:23,977 INFO L225 Difference]: With dead ends: 48 [2022-11-23 13:54:23,978 INFO L226 Difference]: Without dead ends: 29 [2022-11-23 13:54:23,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:54:23,979 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-23 13:54:23,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 80 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-11-23 13:54:23,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-23 13:54:23,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-23 13:54:23,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:54:23,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2022-11-23 13:54:23,987 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 14 [2022-11-23 13:54:23,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:54:23,987 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2022-11-23 13:54:23,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:54:23,987 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-11-23 13:54:23,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 13:54:23,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:54:23,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:54:24,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 13:54:24,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 13:54:24,198 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:54:24,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:54:24,199 INFO L85 PathProgramCache]: Analyzing trace with hash 933813038, now seen corresponding path program 1 times [2022-11-23 13:54:24,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:54:24,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428828886] [2022-11-23 13:54:24,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:54:24,200 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 [2022-11-23 13:54:24,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:54:24,201 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 13:54:24,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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)] Waiting until timeout for monitored process [2022-11-23 13:54:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:54:24,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 13:54:24,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:54:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:54:26,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:54:26,751 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 13:54:26,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428828886] [2022-11-23 13:54:26,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428828886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:54:26,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:54:26,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 13:54:26,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185490937] [2022-11-23 13:54:26,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:54:26,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 13:54:26,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 13:54:26,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 13:54:26,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 13:54:26,754 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:54:30,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 13:54:33,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 13:54:36,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 13:54:38,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:54:40,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 13:54:41,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:54:41,003 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2022-11-23 13:54:41,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:54:41,132 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2022-11-23 13:54:41,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:54:41,133 INFO L225 Difference]: With dead ends: 45 [2022-11-23 13:54:41,133 INFO L226 Difference]: Without dead ends: 34 [2022-11-23 13:54:41,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 13:54:41,134 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 45 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-11-23 13:54:41,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 57 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 4 Unknown, 0 Unchecked, 13.7s Time] [2022-11-23 13:54:41,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-23 13:54:41,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2022-11-23 13:54:41,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:54:41,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-11-23 13:54:41,141 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 18 [2022-11-23 13:54:41,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:54:41,141 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-11-23 13:54:41,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:54:41,141 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-11-23 13:54:41,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-23 13:54:41,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:54:41,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:54:41,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 13:54:41,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 13:54:41,355 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:54:41,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:54:41,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1217171362, now seen corresponding path program 1 times [2022-11-23 13:54:41,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:54:41,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572027282] [2022-11-23 13:54:41,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:54:41,356 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 [2022-11-23 13:54:41,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:54:41,358 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 13:54:41,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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 (6)] Waiting until timeout for monitored process [2022-11-23 13:54:41,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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 (6)] Ended with exit code 139 [2022-11-23 13:54:41,781 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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 (6) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:91) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) 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: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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 (6) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:130) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:317) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:215) ... 30 more Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 37 more [2022-11-23 13:54:41,785 INFO L158 Benchmark]: Toolchain (without parser) took 105951.49ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 39.3MB in the beginning and 55.4MB in the end (delta: -16.1MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2022-11-23 13:54:41,785 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 69.2MB. Free memory was 46.2MB in the beginning and 46.1MB in the end (delta: 46.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:54:41,785 INFO L158 Benchmark]: CACSL2BoogieTranslator took 474.57ms. Allocated memory is still 69.2MB. Free memory was 39.2MB in the beginning and 47.1MB in the end (delta: -8.0MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2022-11-23 13:54:41,786 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.83ms. Allocated memory is still 69.2MB. Free memory was 47.1MB in the beginning and 45.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 13:54:41,786 INFO L158 Benchmark]: Boogie Preprocessor took 69.63ms. Allocated memory is still 69.2MB. Free memory was 45.1MB in the beginning and 43.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 13:54:41,787 INFO L158 Benchmark]: RCFGBuilder took 23513.69ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 43.0MB in the beginning and 71.9MB in the end (delta: -29.0MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2022-11-23 13:54:41,787 INFO L158 Benchmark]: TraceAbstraction took 81806.45ms. Allocated memory is still 96.5MB. Free memory was 71.1MB in the beginning and 55.4MB in the end (delta: 15.7MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2022-11-23 13:54:41,791 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 69.2MB. Free memory was 46.2MB in the beginning and 46.1MB in the end (delta: 46.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 474.57ms. Allocated memory is still 69.2MB. Free memory was 39.2MB in the beginning and 47.1MB in the end (delta: -8.0MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.83ms. Allocated memory is still 69.2MB. Free memory was 47.1MB in the beginning and 45.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.63ms. Allocated memory is still 69.2MB. Free memory was 45.1MB in the beginning and 43.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 23513.69ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 43.0MB in the beginning and 71.9MB in the end (delta: -29.0MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. * TraceAbstraction took 81806.45ms. Allocated memory is still 96.5MB. Free memory was 71.1MB in the beginning and 55.4MB in the end (delta: 15.7MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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 (6) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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 (6) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-23 13:54:42,014 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-23 13:54:42,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153676b2-c8df-41f6-bf92-7b8516e22d9e/bin/utaipan-Q6hlc19bkW/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 (6) with exit command (exit)) Received EOF on stdin. No stderr output.