./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --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 022d3c5901739211c5eb00a5826c62b3632d6c52c21250401c080cec1ded6145 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:51:26,806 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:51:26,874 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 05:51:26,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:51:26,884 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:51:26,912 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:51:26,912 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:51:26,913 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:51:26,913 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:51:26,913 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:51:26,913 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:51:26,914 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:51:26,914 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:51:26,914 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:51:26,914 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:51:26,914 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:51:26,914 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:51:26,915 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:51:26,915 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:51:26,915 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:51:26,915 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:51:26,915 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:51:26,916 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:51:26,916 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:51:26,916 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:51:26,916 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:51:26,917 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:51:26,917 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:51:26,917 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:51:26,917 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:51:26,917 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:51:26,918 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:51:26,918 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:51:26,918 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:51:26,918 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:51:26,918 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:51:26,918 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:51:26,918 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:51:26,919 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:51:26,919 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:51:26,919 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:51:26,919 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:51:26,919 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:51:26,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:51:26,921 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:51:26,922 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:51:26,922 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:51:26,922 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> 022d3c5901739211c5eb00a5826c62b3632d6c52c21250401c080cec1ded6145 [2024-11-14 05:51:27,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:51:27,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:51:27,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:51:27,344 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:51:27,346 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:51:27,349 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c Unable to find full path for "g++" [2024-11-14 05:51:29,489 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:51:29,804 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:51:29,805 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c [2024-11-14 05:51:29,817 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/data/88b513dbf/33c7d6bf63b748c6b115ca97eac5d2bc/FLAGae60f93b1 [2024-11-14 05:51:30,089 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/data/88b513dbf/33c7d6bf63b748c6b115ca97eac5d2bc [2024-11-14 05:51:30,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:51:30,093 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:51:30,095 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:51:30,095 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:51:30,101 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:51:30,102 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:51:30" (1/1) ... [2024-11-14 05:51:30,103 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ca64f64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:30, skipping insertion in model container [2024-11-14 05:51:30,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:51:30" (1/1) ... [2024-11-14 05:51:30,131 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:51:30,391 WARN L250 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_6be79193-c9be-45a9-b462-e65d356beec5/sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c[1998,2011] [2024-11-14 05:51:30,399 WARN L250 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_6be79193-c9be-45a9-b462-e65d356beec5/sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c[2367,2380] [2024-11-14 05:51:30,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:51:30,493 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:51:30,518 WARN L250 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_6be79193-c9be-45a9-b462-e65d356beec5/sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c[1998,2011] [2024-11-14 05:51:30,520 WARN L250 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_6be79193-c9be-45a9-b462-e65d356beec5/sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c[2367,2380] [2024-11-14 05:51:30,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:51:30,573 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:51:30,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:30 WrapperNode [2024-11-14 05:51:30,574 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:51:30,575 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:51:30,575 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:51:30,575 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:51:30,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:30" (1/1) ... [2024-11-14 05:51:30,594 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:30" (1/1) ... [2024-11-14 05:51:30,631 INFO L138 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168 [2024-11-14 05:51:30,632 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:51:30,632 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:51:30,632 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:51:30,632 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:51:30,648 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:30" (1/1) ... [2024-11-14 05:51:30,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:30" (1/1) ... [2024-11-14 05:51:30,651 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:30" (1/1) ... [2024-11-14 05:51:30,652 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:30" (1/1) ... [2024-11-14 05:51:30,666 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:30" (1/1) ... [2024-11-14 05:51:30,675 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:30" (1/1) ... [2024-11-14 05:51:30,677 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:30" (1/1) ... [2024-11-14 05:51:30,678 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:30" (1/1) ... [2024-11-14 05:51:30,684 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:51:30,685 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:51:30,685 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:51:30,685 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:51:30,690 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:30" (1/1) ... [2024-11-14 05:51:30,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:51:30,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:51:30,739 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:51:30,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:51:30,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:51:30,774 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-14 05:51:30,774 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-14 05:51:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:51:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:51:30,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:51:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 05:51:30,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 05:51:30,883 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:51:30,886 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:51:31,410 INFO L? ?]: Removed 70 outVars from TransFormulas that were not future-live. [2024-11-14 05:51:31,411 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:51:31,710 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:51:31,710 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 05:51:31,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:51:31 BoogieIcfgContainer [2024-11-14 05:51:31,712 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:51:31,715 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:51:31,716 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:51:31,723 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:51:31,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:51:30" (1/3) ... [2024-11-14 05:51:31,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320825f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:51:31, skipping insertion in model container [2024-11-14 05:51:31,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:30" (2/3) ... [2024-11-14 05:51:31,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320825f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:51:31, skipping insertion in model container [2024-11-14 05:51:31,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:51:31" (3/3) ... [2024-11-14 05:51:31,728 INFO L112 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_2a.c.cil.c [2024-11-14 05:51:31,752 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:51:31,754 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG square_5+soft_float_2a.c.cil.c that has 3 procedures, 45 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-14 05:51:31,831 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:51:31,846 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@518b7044, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:51:31,846 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-14 05:51:31,851 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 38 states have internal predecessors, (55), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 05:51:31,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 05:51:31,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:51:31,859 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 05:51:31,860 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:51:31,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:51:31,866 INFO L85 PathProgramCache]: Analyzing trace with hash 9615155, now seen corresponding path program 1 times [2024-11-14 05:51:31,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:51:31,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490719147] [2024-11-14 05:51:31,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:31,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:51:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:51:31,979 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 05:51:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:51:32,022 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 05:51:32,024 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 05:51:32,025 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-14 05:51:32,027 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-14 05:51:32,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:51:32,035 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-14 05:51:32,054 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 05:51:32,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 05:51:32 BoogieIcfgContainer [2024-11-14 05:51:32,060 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 05:51:32,060 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 05:51:32,060 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 05:51:32,061 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 05:51:32,063 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:51:31" (3/4) ... [2024-11-14 05:51:32,066 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-14 05:51:32,067 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 05:51:32,068 INFO L158 Benchmark]: Toolchain (without parser) took 1975.04ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 73.6MB in the end (delta: 18.7MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2024-11-14 05:51:32,070 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 117.4MB. Free memory was 72.1MB in the beginning and 71.9MB in the end (delta: 196.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:51:32,071 INFO L158 Benchmark]: CACSL2BoogieTranslator took 479.40ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 78.1MB in the end (delta: 14.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 05:51:32,071 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.63ms. Allocated memory is still 117.4MB. Free memory was 78.1MB in the beginning and 76.2MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:51:32,071 INFO L158 Benchmark]: Boogie Preprocessor took 52.16ms. Allocated memory is still 117.4MB. Free memory was 76.2MB in the beginning and 75.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:51:32,072 INFO L158 Benchmark]: RCFGBuilder took 1026.84ms. Allocated memory is still 117.4MB. Free memory was 74.7MB in the beginning and 86.6MB in the end (delta: -11.9MB). Peak memory consumption was 45.6MB. Max. memory is 16.1GB. [2024-11-14 05:51:32,075 INFO L158 Benchmark]: TraceAbstraction took 344.66ms. Allocated memory is still 117.4MB. Free memory was 86.0MB in the beginning and 73.6MB in the end (delta: 12.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 05:51:32,076 INFO L158 Benchmark]: Witness Printer took 6.81ms. Allocated memory is still 117.4MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:51:32,080 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 117.4MB. Free memory was 72.1MB in the beginning and 71.9MB in the end (delta: 196.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 479.40ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 78.1MB in the end (delta: 14.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.63ms. Allocated memory is still 117.4MB. Free memory was 78.1MB in the beginning and 76.2MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 52.16ms. Allocated memory is still 117.4MB. Free memory was 76.2MB in the beginning and 75.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1026.84ms. Allocated memory is still 117.4MB. Free memory was 74.7MB in the beginning and 86.6MB in the end (delta: -11.9MB). Peak memory consumption was 45.6MB. Max. memory is 16.1GB. * TraceAbstraction took 344.66ms. Allocated memory is still 117.4MB. Free memory was 86.0MB in the beginning and 73.6MB in the end (delta: 12.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 6.81ms. Allocated memory is still 117.4MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L322] COND TRUE __VERIFIER_nondet_int() [L323] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L47] COND TRUE !(result >= 0.0f && result < 1.3985f) [L48] reach_error() - UnprovableResult [Line: 60]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 45 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-14 05:51:32,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --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 022d3c5901739211c5eb00a5826c62b3632d6c52c21250401c080cec1ded6145 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:51:35,283 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:51:35,429 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-14 05:51:35,436 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:51:35,436 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:51:35,485 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:51:35,487 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:51:35,488 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:51:35,488 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:51:35,488 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:51:35,488 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:51:35,489 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:51:35,489 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:51:35,489 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:51:35,489 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:51:35,489 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:51:35,489 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:51:35,490 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:51:35,490 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:51:35,490 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:51:35,490 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:51:35,490 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:51:35,493 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:51:35,493 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:51:35,493 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 05:51:35,493 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 05:51:35,493 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:51:35,493 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 05:51:35,494 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:51:35,494 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:51:35,494 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:51:35,494 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:51:35,494 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 05:51:35,494 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:51:35,495 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:51:35,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:51:35,495 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:51:35,496 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:51:35,496 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:51:35,496 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 05:51:35,496 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 05:51:35,496 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:51:35,496 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:51:35,496 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> 022d3c5901739211c5eb00a5826c62b3632d6c52c21250401c080cec1ded6145 [2024-11-14 05:51:35,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:51:35,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:51:35,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:51:35,868 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:51:35,869 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:51:35,870 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c Unable to find full path for "g++" [2024-11-14 05:51:38,124 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:51:38,443 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:51:38,444 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c [2024-11-14 05:51:38,461 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/data/7b38b29be/e0003af7090842a7982b5e401599a443/FLAG8533e7eb0 [2024-11-14 05:51:38,488 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/data/7b38b29be/e0003af7090842a7982b5e401599a443 [2024-11-14 05:51:38,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:51:38,494 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:51:38,496 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:51:38,496 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:51:38,501 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:51:38,503 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:51:38" (1/1) ... [2024-11-14 05:51:38,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46bcfe66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:38, skipping insertion in model container [2024-11-14 05:51:38,506 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:51:38" (1/1) ... [2024-11-14 05:51:38,543 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:51:38,793 WARN L250 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_6be79193-c9be-45a9-b462-e65d356beec5/sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c[1998,2011] [2024-11-14 05:51:38,804 WARN L250 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_6be79193-c9be-45a9-b462-e65d356beec5/sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c[2367,2380] [2024-11-14 05:51:38,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:51:38,920 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:51:38,938 WARN L250 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_6be79193-c9be-45a9-b462-e65d356beec5/sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c[1998,2011] [2024-11-14 05:51:38,940 WARN L250 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_6be79193-c9be-45a9-b462-e65d356beec5/sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c[2367,2380] [2024-11-14 05:51:38,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:51:39,012 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:51:39,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:39 WrapperNode [2024-11-14 05:51:39,014 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:51:39,016 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:51:39,016 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:51:39,016 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:51:39,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:39" (1/1) ... [2024-11-14 05:51:39,043 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:39" (1/1) ... [2024-11-14 05:51:39,068 INFO L138 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 132 [2024-11-14 05:51:39,069 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:51:39,070 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:51:39,070 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:51:39,070 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:51:39,078 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:39" (1/1) ... [2024-11-14 05:51:39,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:39" (1/1) ... [2024-11-14 05:51:39,083 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:39" (1/1) ... [2024-11-14 05:51:39,083 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:39" (1/1) ... [2024-11-14 05:51:39,093 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:39" (1/1) ... [2024-11-14 05:51:39,098 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:39" (1/1) ... [2024-11-14 05:51:39,100 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:39" (1/1) ... [2024-11-14 05:51:39,102 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:39" (1/1) ... [2024-11-14 05:51:39,105 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:51:39,107 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:51:39,107 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:51:39,107 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:51:39,108 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:39" (1/1) ... [2024-11-14 05:51:39,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:51:39,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:51:39,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:51:39,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:51:39,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:51:39,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 05:51:39,186 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-14 05:51:39,187 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-14 05:51:39,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:51:39,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:51:39,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 05:51:39,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 05:51:39,308 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:51:39,311 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:51:42,045 INFO L? ?]: Removed 54 outVars from TransFormulas that were not future-live. [2024-11-14 05:51:42,045 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:51:42,059 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:51:42,059 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 05:51:42,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:51:42 BoogieIcfgContainer [2024-11-14 05:51:42,060 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:51:42,064 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:51:42,064 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:51:42,071 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:51:42,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:51:38" (1/3) ... [2024-11-14 05:51:42,075 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a03f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:51:42, skipping insertion in model container [2024-11-14 05:51:42,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:51:39" (2/3) ... [2024-11-14 05:51:42,075 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a03f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:51:42, skipping insertion in model container [2024-11-14 05:51:42,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:51:42" (3/3) ... [2024-11-14 05:51:42,077 INFO L112 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_2a.c.cil.c [2024-11-14 05:51:42,100 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:51:42,102 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG square_5+soft_float_2a.c.cil.c that has 3 procedures, 61 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-14 05:51:42,170 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:51:42,185 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@2fa155e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:51:42,186 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-14 05:51:42,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 05:51:42,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 05:51:42,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:51:42,200 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:51:42,201 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:51:42,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:51:42,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1912677092, now seen corresponding path program 1 times [2024-11-14 05:51:42,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:51:42,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747169463] [2024-11-14 05:51:42,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:42,221 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 [2024-11-14 05:51:42,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:51:42,225 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 05:51:42,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:51:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:42,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-14 05:51:42,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:51:42,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:51:42,880 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:51:42,880 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:51:42,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747169463] [2024-11-14 05:51:42,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747169463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:51:42,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:51:42,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:51:42,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688508426] [2024-11-14 05:51:42,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:51:42,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 05:51:42,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:51:42,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 05:51:42,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:51:42,939 INFO L87 Difference]: Start difference. First operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:51:42,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:51:42,967 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2024-11-14 05:51:42,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 05:51:42,969 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-14 05:51:42,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:51:42,977 INFO L225 Difference]: With dead ends: 117 [2024-11-14 05:51:42,978 INFO L226 Difference]: Without dead ends: 52 [2024-11-14 05:51:42,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:51:42,985 INFO L432 NwaCegarLoop]: 82 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, 82 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 [2024-11-14 05:51:42,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:51:43,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-14 05:51:43,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-14 05:51:43,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:51:43,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2024-11-14 05:51:43,040 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2024-11-14 05:51:43,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:51:43,041 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2024-11-14 05:51:43,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:51:43,043 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2024-11-14 05:51:43,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 05:51:43,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:51:43,044 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:51:43,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:51:43,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:51:43,246 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:51:43,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:51:43,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1912736674, now seen corresponding path program 1 times [2024-11-14 05:51:43,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:51:43,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031901613] [2024-11-14 05:51:43,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:43,249 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 [2024-11-14 05:51:43,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:51:43,253 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 05:51:43,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be79193-c9be-45a9-b462-e65d356beec5/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 06:06:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 06:06:25,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 06:06:25,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 06:06:40,808 WARN L851 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) |c_ULTIMATE.start_main1_~result~0#1|)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false