./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_4+soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_4+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ --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 e448f16723ad202cc72d167f8951516486910b6c33698da967b6635bbb5adec7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:57:53,926 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:57:54,047 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:57:54,058 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:57:54,058 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:57:54,106 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:57:54,107 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:57:54,108 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:57:54,109 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:57:54,114 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:57:54,115 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:57:54,116 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:57:54,116 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:57:54,118 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:57:54,118 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:57:54,119 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:57:54,119 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:57:54,120 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:57:54,120 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:57:54,121 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:57:54,121 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:57:54,122 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:57:54,123 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:57:54,123 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:57:54,124 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:57:54,124 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:57:54,125 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:57:54,125 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:57:54,126 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:57:54,126 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:57:54,127 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:57:54,128 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:57:54,128 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:57:54,128 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:57:54,129 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:57:54,129 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:57:54,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:57:54,129 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:57:54,130 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:57:54,130 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:57:54,130 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:57:54,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:57:54,131 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:57:54,131 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:57:54,131 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:57:54,132 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e448f16723ad202cc72d167f8951516486910b6c33698da967b6635bbb5adec7 [2023-11-19 04:57:54,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:57:54,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:57:54,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:57:54,527 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:57:54,528 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:57:54,529 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/combinations/square_4+soft_float_4-2a.c.cil.c [2023-11-19 04:57:57,787 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:57:58,104 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:57:58,105 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/sv-benchmarks/c/combinations/square_4+soft_float_4-2a.c.cil.c [2023-11-19 04:57:58,120 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/data/b8f7ce66f/4fa98923824a4685a614b26730abdf82/FLAGd3028235a [2023-11-19 04:57:58,137 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/data/b8f7ce66f/4fa98923824a4685a614b26730abdf82 [2023-11-19 04:57:58,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:57:58,145 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:57:58,149 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:57:58,149 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:57:58,154 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:57:58,155 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:57:58" (1/1) ... [2023-11-19 04:57:58,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79feb0b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:58, skipping insertion in model container [2023-11-19 04:57:58,157 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:57:58" (1/1) ... [2023-11-19 04:57:58,212 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:57:58,438 WARN L240 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_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/sv-benchmarks/c/combinations/square_4+soft_float_4-2a.c.cil.c[1999,2012] [2023-11-19 04:57:58,443 WARN L240 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_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/sv-benchmarks/c/combinations/square_4+soft_float_4-2a.c.cil.c[2393,2406] [2023-11-19 04:57:58,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:57:58,512 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:57:58,527 WARN L240 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_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/sv-benchmarks/c/combinations/square_4+soft_float_4-2a.c.cil.c[1999,2012] [2023-11-19 04:57:58,528 WARN L240 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_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/sv-benchmarks/c/combinations/square_4+soft_float_4-2a.c.cil.c[2393,2406] [2023-11-19 04:57:58,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:57:58,578 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:57:58,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:58 WrapperNode [2023-11-19 04:57:58,579 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:57:58,580 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:57:58,580 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:57:58,580 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:57:58,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:58" (1/1) ... [2023-11-19 04:57:58,598 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:58" (1/1) ... [2023-11-19 04:57:58,621 INFO L138 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 79 [2023-11-19 04:57:58,621 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:57:58,622 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:57:58,627 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:57:58,627 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:57:58,636 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:58" (1/1) ... [2023-11-19 04:57:58,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:58" (1/1) ... [2023-11-19 04:57:58,640 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:58" (1/1) ... [2023-11-19 04:57:58,654 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:58" (1/1) ... [2023-11-19 04:57:58,663 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:58" (1/1) ... [2023-11-19 04:57:58,668 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:58" (1/1) ... [2023-11-19 04:57:58,676 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:58" (1/1) ... [2023-11-19 04:57:58,678 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:58" (1/1) ... [2023-11-19 04:57:58,684 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:57:58,685 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:57:58,686 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:57:58,700 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:57:58,701 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:58" (1/1) ... [2023-11-19 04:57:58,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:57:58,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:57:58,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:57:58,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:57:58,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:57:58,792 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-11-19 04:57:58,792 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-11-19 04:57:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2023-11-19 04:57:58,795 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2023-11-19 04:57:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:57:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:57:58,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:57:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 04:57:58,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 04:57:58,924 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:57:58,927 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:57:59,404 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:57:59,717 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:57:59,718 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 04:57:59,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:57:59 BoogieIcfgContainer [2023-11-19 04:57:59,726 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:57:59,729 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:57:59,729 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:57:59,734 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:57:59,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:57:58" (1/3) ... [2023-11-19 04:57:59,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@608ba4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:57:59, skipping insertion in model container [2023-11-19 04:57:59,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:58" (2/3) ... [2023-11-19 04:57:59,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@608ba4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:57:59, skipping insertion in model container [2023-11-19 04:57:59,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:57:59" (3/3) ... [2023-11-19 04:57:59,740 INFO L112 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_4-2a.c.cil.c [2023-11-19 04:57:59,760 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:57:59,760 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 04:57:59,816 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:57:59,824 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=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;@7e487f8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:57:59,824 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 04:57:59,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 37 states have internal predecessors, (52), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 04:57:59,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 04:57:59,835 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:57:59,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 04:57:59,836 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:57:59,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:57:59,841 INFO L85 PathProgramCache]: Analyzing trace with hash 9196159, now seen corresponding path program 1 times [2023-11-19 04:57:59,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:57:59,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175757269] [2023-11-19 04:57:59,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:57:59,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:57:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:57:59,962 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:57:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:57:59,999 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:58:00,005 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:58:00,007 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-11-19 04:58:00,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-19 04:58:00,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:58:00,015 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 04:58:00,020 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:58:00,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:58:00 BoogieIcfgContainer [2023-11-19 04:58:00,049 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:58:00,052 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:58:00,052 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:58:00,052 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:58:00,053 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:57:59" (3/4) ... [2023-11-19 04:58:00,057 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:58:00,059 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:58:00,060 INFO L158 Benchmark]: Toolchain (without parser) took 1914.83ms. Allocated memory is still 159.4MB. Free memory was 113.2MB in the beginning and 94.7MB in the end (delta: 18.6MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2023-11-19 04:58:00,061 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 117.4MB. Free memory is still 66.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:58:00,062 INFO L158 Benchmark]: CACSL2BoogieTranslator took 430.52ms. Allocated memory is still 159.4MB. Free memory was 112.8MB in the beginning and 98.8MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 04:58:00,062 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.37ms. Allocated memory is still 159.4MB. Free memory was 98.8MB in the beginning and 97.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:58:00,063 INFO L158 Benchmark]: Boogie Preprocessor took 62.47ms. Allocated memory is still 159.4MB. Free memory was 96.9MB in the beginning and 95.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:58:00,069 INFO L158 Benchmark]: RCFGBuilder took 1041.29ms. Allocated memory is still 159.4MB. Free memory was 95.2MB in the beginning and 108.7MB in the end (delta: -13.5MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2023-11-19 04:58:00,070 INFO L158 Benchmark]: TraceAbstraction took 319.91ms. Allocated memory is still 159.4MB. Free memory was 108.0MB in the beginning and 94.7MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 04:58:00,070 INFO L158 Benchmark]: Witness Printer took 6.86ms. Allocated memory is still 159.4MB. Free memory is still 94.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:58:00,077 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 117.4MB. Free memory is still 66.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 430.52ms. Allocated memory is still 159.4MB. Free memory was 112.8MB in the beginning and 98.8MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.37ms. Allocated memory is still 159.4MB. Free memory was 98.8MB in the beginning and 97.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 62.47ms. Allocated memory is still 159.4MB. Free memory was 96.9MB in the beginning and 95.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1041.29ms. Allocated memory is still 159.4MB. Free memory was 95.2MB in the beginning and 108.7MB in the end (delta: -13.5MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. * TraceAbstraction took 319.91ms. Allocated memory is still 159.4MB. Free memory was 108.0MB in the beginning and 94.7MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 6.86ms. Allocated memory is still 159.4MB. Free memory is still 94.7MB. 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 someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L310] COND TRUE __VERIFIER_nondet_int() [L311] 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; VAL [IN=53, x=53] [L47] COND TRUE !(result >= 0.0f && result < 1.39844f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - UnprovableResult [Line: 61]: 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 4 procedures, 49 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=49occurred 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 [2023-11-19 04:58:00,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/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_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_4+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ --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 e448f16723ad202cc72d167f8951516486910b6c33698da967b6635bbb5adec7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:58:02,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:58:03,092 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-19 04:58:03,098 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:58:03,099 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:58:03,126 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:58:03,127 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:58:03,128 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:58:03,129 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:58:03,130 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:58:03,130 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:58:03,131 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:58:03,132 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:58:03,132 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:58:03,133 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:58:03,133 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:58:03,134 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:58:03,135 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:58:03,136 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:58:03,136 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:58:03,137 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:58:03,137 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:58:03,138 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:58:03,138 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:58:03,139 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:58:03,139 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:58:03,140 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:58:03,140 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:58:03,140 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:58:03,141 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:58:03,141 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:58:03,142 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:58:03,142 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:58:03,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:58:03,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:58:03,143 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:58:03,144 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:58:03,144 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:58:03,144 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:58:03,145 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:58:03,145 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:58:03,145 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:58:03,146 INFO L153 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_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e448f16723ad202cc72d167f8951516486910b6c33698da967b6635bbb5adec7 [2023-11-19 04:58:03,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:58:03,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:58:03,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:58:03,571 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:58:03,571 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:58:03,573 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/combinations/square_4+soft_float_4-2a.c.cil.c [2023-11-19 04:58:06,748 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:58:07,032 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:58:07,033 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/sv-benchmarks/c/combinations/square_4+soft_float_4-2a.c.cil.c [2023-11-19 04:58:07,044 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/data/0f33c3c32/2c8c673771ba44fbaf1b7c636c69317c/FLAG8cb2cf103 [2023-11-19 04:58:07,059 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/data/0f33c3c32/2c8c673771ba44fbaf1b7c636c69317c [2023-11-19 04:58:07,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:58:07,063 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:58:07,064 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:58:07,064 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:58:07,069 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:58:07,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:58:07" (1/1) ... [2023-11-19 04:58:07,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb9a1f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:07, skipping insertion in model container [2023-11-19 04:58:07,071 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:58:07" (1/1) ... [2023-11-19 04:58:07,104 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:58:07,307 WARN L240 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_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/sv-benchmarks/c/combinations/square_4+soft_float_4-2a.c.cil.c[1999,2012] [2023-11-19 04:58:07,315 WARN L240 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_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/sv-benchmarks/c/combinations/square_4+soft_float_4-2a.c.cil.c[2393,2406] [2023-11-19 04:58:07,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:58:07,414 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:58:07,446 WARN L240 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_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/sv-benchmarks/c/combinations/square_4+soft_float_4-2a.c.cil.c[1999,2012] [2023-11-19 04:58:07,448 WARN L240 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_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/sv-benchmarks/c/combinations/square_4+soft_float_4-2a.c.cil.c[2393,2406] [2023-11-19 04:58:07,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:58:07,515 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:58:07,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:07 WrapperNode [2023-11-19 04:58:07,516 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:58:07,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:58:07,519 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:58:07,519 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:58:07,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:07" (1/1) ... [2023-11-19 04:58:07,580 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:07" (1/1) ... [2023-11-19 04:58:07,622 INFO L138 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 75 [2023-11-19 04:58:07,622 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:58:07,623 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:58:07,623 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:58:07,624 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:58:07,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:07" (1/1) ... [2023-11-19 04:58:07,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:07" (1/1) ... [2023-11-19 04:58:07,651 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:07" (1/1) ... [2023-11-19 04:58:07,652 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:07" (1/1) ... [2023-11-19 04:58:07,668 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:07" (1/1) ... [2023-11-19 04:58:07,673 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:07" (1/1) ... [2023-11-19 04:58:07,676 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:07" (1/1) ... [2023-11-19 04:58:07,678 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:07" (1/1) ... [2023-11-19 04:58:07,682 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:58:07,683 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:58:07,683 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:58:07,683 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:58:07,684 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:07" (1/1) ... [2023-11-19 04:58:07,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:58:07,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:58:07,720 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:58:07,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:58:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:58:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:58:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-11-19 04:58:07,768 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-11-19 04:58:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2023-11-19 04:58:07,768 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2023-11-19 04:58:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:58:07,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:58:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 04:58:07,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 04:58:07,891 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:58:07,894 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:58:10,519 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:58:10,531 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:58:10,531 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 04:58:10,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:58:10 BoogieIcfgContainer [2023-11-19 04:58:10,538 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:58:10,541 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:58:10,542 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:58:10,546 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:58:10,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:58:07" (1/3) ... [2023-11-19 04:58:10,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552b9023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:58:10, skipping insertion in model container [2023-11-19 04:58:10,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:07" (2/3) ... [2023-11-19 04:58:10,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552b9023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:58:10, skipping insertion in model container [2023-11-19 04:58:10,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:58:10" (3/3) ... [2023-11-19 04:58:10,550 INFO L112 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_4-2a.c.cil.c [2023-11-19 04:58:10,573 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:58:10,574 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 04:58:10,635 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:58:10,644 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=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;@7eaee579, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:58:10,645 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 04:58:10,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 04:58:10,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:58:10,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:10,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:58:10,662 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:58:10,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:10,673 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2023-11-19 04:58:10,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:58:10,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456512959] [2023-11-19 04:58:10,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:10,688 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 [2023-11-19 04:58:10,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:58:10,691 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 04:58:10,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:58:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:11,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 04:58:11,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:11,307 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:58:11,307 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:58:11,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456512959] [2023-11-19 04:58:11,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456512959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:11,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:58:11,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:58:11,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908678616] [2023-11-19 04:58:11,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:11,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:58:11,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:58:11,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:58:11,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:58:11,346 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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) [2023-11-19 04:58:11,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:11,381 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2023-11-19 04:58:11,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:58:11,383 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 [2023-11-19 04:58:11,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:11,393 INFO L225 Difference]: With dead ends: 121 [2023-11-19 04:58:11,393 INFO L226 Difference]: Without dead ends: 56 [2023-11-19 04:58:11,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:58:11,401 INFO L413 NwaCegarLoop]: 81 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, 81 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 [2023-11-19 04:58:11,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:58:11,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-19 04:58:11,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-19 04:58:11,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 04:58:11,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2023-11-19 04:58:11,449 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2023-11-19 04:58:11,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:11,449 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2023-11-19 04:58:11,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:11,450 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2023-11-19 04:58:11,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:58:11,451 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:11,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:58:11,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:58:11,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:58:11,666 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:58:11,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:11,667 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2023-11-19 04:58:11,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:58:11,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11343035] [2023-11-19 04:58:11,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:11,674 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 [2023-11-19 04:58:11,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:58:11,676 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 04:58:11,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cfb85ca-37b4-45f5-b932-1e95ef06b6e4/bin/utaipan-verify-t7M7D8N6sZ/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