./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX --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 c12eaf00463983fc4c27f56efba3b68bea09d23ae311c93edfb6c8bce7a55280 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:43:12,823 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:43:12,940 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:43:12,948 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:43:12,949 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:43:12,988 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:43:12,989 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:43:12,989 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:43:12,990 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:43:12,995 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:43:12,996 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:43:12,997 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:43:12,998 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:43:12,999 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:43:13,000 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:43:13,001 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:43:13,002 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:43:13,002 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:43:13,003 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:43:13,003 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:43:13,004 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:43:13,004 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:43:13,005 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:43:13,006 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:43:13,006 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:43:13,007 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:43:13,007 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:43:13,008 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:43:13,008 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:43:13,009 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:43:13,010 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:43:13,010 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:43:13,011 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:43:13,011 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:43:13,011 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:43:13,011 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:43:13,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:43:13,012 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:43:13,012 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:43:13,013 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:43:13,013 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:43:13,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:43:13,014 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:43:13,014 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:43:13,014 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:43:13,015 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_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c12eaf00463983fc4c27f56efba3b68bea09d23ae311c93edfb6c8bce7a55280 [2023-11-12 00:43:13,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:43:13,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:43:13,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:43:13,382 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:43:13,383 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:43:13,385 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2023-11-12 00:43:16,519 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:43:16,755 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:43:16,756 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2023-11-12 00:43:16,764 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/data/8051ece19/5d990fcea2bd41ae8684152e1fad3a82/FLAG0e110ba60 [2023-11-12 00:43:16,784 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/data/8051ece19/5d990fcea2bd41ae8684152e1fad3a82 [2023-11-12 00:43:16,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:43:16,792 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:43:16,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:43:16,795 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:43:16,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:43:16,801 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:43:16" (1/1) ... [2023-11-12 00:43:16,802 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc4dab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:16, skipping insertion in model container [2023-11-12 00:43:16,803 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:43:16" (1/1) ... [2023-11-12 00:43:16,828 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:43:17,009 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_22c92f57-819c-4054-81b1-dff7c5af0787/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c[1936,1949] [2023-11-12 00:43:17,013 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:43:17,022 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:43:17,042 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_22c92f57-819c-4054-81b1-dff7c5af0787/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c[1936,1949] [2023-11-12 00:43:17,043 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:43:17,058 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:43:17,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:17 WrapperNode [2023-11-12 00:43:17,059 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:43:17,060 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:43:17,061 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:43:17,061 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:43:17,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:17" (1/1) ... [2023-11-12 00:43:17,075 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:17" (1/1) ... [2023-11-12 00:43:17,095 INFO L138 Inliner]: procedures = 18, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2023-11-12 00:43:17,096 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:43:17,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:43:17,097 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:43:17,097 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:43:17,105 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:17" (1/1) ... [2023-11-12 00:43:17,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:17" (1/1) ... [2023-11-12 00:43:17,108 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:17" (1/1) ... [2023-11-12 00:43:17,108 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:17" (1/1) ... [2023-11-12 00:43:17,115 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:17" (1/1) ... [2023-11-12 00:43:17,119 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:17" (1/1) ... [2023-11-12 00:43:17,120 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:17" (1/1) ... [2023-11-12 00:43:17,122 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:17" (1/1) ... [2023-11-12 00:43:17,124 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:43:17,125 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:43:17,125 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:43:17,125 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:43:17,126 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:17" (1/1) ... [2023-11-12 00:43:17,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:43:17,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:43:17,160 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:43:17,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:43:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:43:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:43:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:43:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2023-11-12 00:43:17,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2023-11-12 00:43:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-12 00:43:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:43:17,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:43:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:43:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:43:17,274 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:43:17,276 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:43:17,508 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:43:17,620 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:43:17,620 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-12 00:43:17,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:43:17 BoogieIcfgContainer [2023-11-12 00:43:17,623 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:43:17,626 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:43:17,626 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:43:17,630 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:43:17,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:43:16" (1/3) ... [2023-11-12 00:43:17,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3c51e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:43:17, skipping insertion in model container [2023-11-12 00:43:17,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:17" (2/3) ... [2023-11-12 00:43:17,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3c51e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:43:17, skipping insertion in model container [2023-11-12 00:43:17,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:43:17" (3/3) ... [2023-11-12 00:43:17,633 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2023-11-12 00:43:17,685 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:43:17,686 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:43:17,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:43:17,746 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;@7a2b704e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:43:17,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:43:17,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 00:43:17,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 00:43:17,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:17,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:17,760 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:43:17,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:17,766 INFO L85 PathProgramCache]: Analyzing trace with hash -953830544, now seen corresponding path program 1 times [2023-11-12 00:43:17,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:17,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184358021] [2023-11-12 00:43:17,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:17,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:17,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:17,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:43:17,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184358021] [2023-11-12 00:43:17,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184358021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:17,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:17,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:43:17,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2900472] [2023-11-12 00:43:17,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:17,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:43:17,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:43:18,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:43:18,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:43:18,047 INFO L87 Difference]: Start difference. First operand has 21 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:43:18,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:18,115 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2023-11-12 00:43:18,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:43:18,118 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-12 00:43:18,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:18,125 INFO L225 Difference]: With dead ends: 40 [2023-11-12 00:43:18,125 INFO L226 Difference]: Without dead ends: 19 [2023-11-12 00:43:18,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:43:18,131 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:18,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:43:18,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-12 00:43:18,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-11-12 00:43:18,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 00:43:18,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2023-11-12 00:43:18,179 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2023-11-12 00:43:18,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:18,179 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-11-12 00:43:18,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:43:18,180 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2023-11-12 00:43:18,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:43:18,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:18,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:18,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:43:18,182 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:43:18,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:18,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1729423715, now seen corresponding path program 1 times [2023-11-12 00:43:18,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:43:18,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257615227] [2023-11-12 00:43:18,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:18,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:43:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:43:18,233 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:43:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:43:18,298 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:43:18,299 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:43:18,301 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:43:18,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:43:18,308 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-12 00:43:18,312 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:43:18,331 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated [2023-11-12 00:43:18,332 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short10 could not be translated [2023-11-12 00:43:18,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:43:18 BoogieIcfgContainer [2023-11-12 00:43:18,349 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:43:18,349 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:43:18,350 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:43:18,350 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:43:18,351 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:43:17" (3/4) ... [2023-11-12 00:43:18,353 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:43:18,354 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:43:18,355 INFO L158 Benchmark]: Toolchain (without parser) took 1563.55ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 76.0MB in the beginning and 96.7MB in the end (delta: -20.7MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2023-11-12 00:43:18,357 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory was 81.3MB in the beginning and 81.3MB in the end (delta: 30.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:43:18,358 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.50ms. Allocated memory is still 113.2MB. Free memory was 76.0MB in the beginning and 64.7MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-12 00:43:18,359 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.64ms. Allocated memory is still 113.2MB. Free memory was 64.7MB in the beginning and 63.0MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 00:43:18,359 INFO L158 Benchmark]: Boogie Preprocessor took 27.91ms. Allocated memory is still 113.2MB. Free memory was 63.0MB in the beginning and 61.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:43:18,360 INFO L158 Benchmark]: RCFGBuilder took 498.23ms. Allocated memory is still 113.2MB. Free memory was 61.8MB in the beginning and 42.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-12 00:43:18,361 INFO L158 Benchmark]: TraceAbstraction took 722.93ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 42.5MB in the beginning and 97.6MB in the end (delta: -55.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:43:18,361 INFO L158 Benchmark]: Witness Printer took 5.15ms. Allocated memory is still 151.0MB. Free memory was 97.6MB in the beginning and 96.7MB in the end (delta: 884.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:43:18,365 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory was 81.3MB in the beginning and 81.3MB in the end (delta: 30.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.50ms. Allocated memory is still 113.2MB. Free memory was 76.0MB in the beginning and 64.7MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.64ms. Allocated memory is still 113.2MB. Free memory was 64.7MB in the beginning and 63.0MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.91ms. Allocated memory is still 113.2MB. Free memory was 63.0MB in the beginning and 61.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 498.23ms. Allocated memory is still 113.2MB. Free memory was 61.8MB in the beginning and 42.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 722.93ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 42.5MB in the beginning and 97.6MB in the end (delta: -55.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.15ms. Allocated memory is still 151.0MB. Free memory was 97.6MB in the beginning and 96.7MB in the end (delta: 884.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short10 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 81]: 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 80, overapproximation of someUnaryFLOAToperation at line 76. Possible FailurePath: [L75] float x = 0.0f; [L76] float y = -0.0f; [L77] CALL, EXPR fmax_float(x, y) [L46] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L23] __uint32_t w; VAL [\old(x)=0, x=0] [L26] ieee_float_shape_type gf_u; [L27] EXPR gf_u.value = (x) [L28] EXPR gf_u.word [L28] EXPR (w) = gf_u.word [L25-L29] { ieee_float_shape_type gf_u; gf_u.value = (x); (w) = gf_u.word; } VAL [\old(x)=0, w=2139095041, x=0] [L31] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L33-L34] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L36-L37] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L39] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L42] return 0; [L46] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=2139095042, x=0, y=2139095042] [L46] COND TRUE __fpclassify_float(x) == 0 [L47] return y; VAL [\old(x)=0, \old(y)=2139095042, \result=2139095042, x=0, y=2139095042] [L77] RET, EXPR fmax_float(x, y) [L77] float res = fmax_float(x, y); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=2139095042, x=0, y=2139095042] [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L81] reach_error() VAL [res=2139095042, x=0, y=2139095042] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 18 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-12 00:43:18,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX --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 c12eaf00463983fc4c27f56efba3b68bea09d23ae311c93edfb6c8bce7a55280 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:43:21,024 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:43:21,151 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-12 00:43:21,160 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:43:21,161 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:43:21,207 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:43:21,208 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:43:21,209 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:43:21,210 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:43:21,216 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:43:21,216 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:43:21,217 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:43:21,218 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:43:21,219 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:43:21,220 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:43:21,221 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:43:21,222 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:43:21,222 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:43:21,223 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:43:21,224 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:43:21,225 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:43:21,226 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:43:21,226 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:43:21,227 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:43:21,227 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:43:21,228 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:43:21,228 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:43:21,229 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:43:21,229 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:43:21,230 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:43:21,231 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:43:21,231 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:43:21,232 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:43:21,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:43:21,233 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:43:21,233 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:43:21,234 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:43:21,234 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:43:21,234 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:43:21,236 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:43:21,236 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:43:21,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:43:21,237 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_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c12eaf00463983fc4c27f56efba3b68bea09d23ae311c93edfb6c8bce7a55280 [2023-11-12 00:43:21,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:43:21,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:43:21,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:43:21,723 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:43:21,723 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:43:21,725 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2023-11-12 00:43:24,946 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:43:25,168 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:43:25,168 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2023-11-12 00:43:25,177 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/data/54072c037/7a332131eaad4f4c8ff1d453d846d6c5/FLAG2e9eea958 [2023-11-12 00:43:25,193 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/data/54072c037/7a332131eaad4f4c8ff1d453d846d6c5 [2023-11-12 00:43:25,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:43:25,198 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:43:25,199 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:43:25,200 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:43:25,206 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:43:25,207 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,208 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@341b8e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25, skipping insertion in model container [2023-11-12 00:43:25,208 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,237 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:43:25,421 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_22c92f57-819c-4054-81b1-dff7c5af0787/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c[1936,1949] [2023-11-12 00:43:25,425 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:43:25,440 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:43:25,464 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_22c92f57-819c-4054-81b1-dff7c5af0787/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c[1936,1949] [2023-11-12 00:43:25,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:43:25,482 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:43:25,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25 WrapperNode [2023-11-12 00:43:25,483 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:43:25,484 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:43:25,484 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:43:25,485 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:43:25,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,518 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,537 INFO L138 Inliner]: procedures = 21, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2023-11-12 00:43:25,537 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:43:25,538 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:43:25,538 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:43:25,539 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:43:25,547 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,554 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,554 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,571 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,575 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,586 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,588 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,600 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:43:25,601 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:43:25,601 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:43:25,601 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:43:25,602 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (1/1) ... [2023-11-12 00:43:25,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:43:25,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:43:25,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:43:25,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:43:25,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:43:25,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:43:25,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:43:25,684 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2023-11-12 00:43:25,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2023-11-12 00:43:25,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 00:43:25,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:43:25,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:43:25,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-11-12 00:43:25,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:43:25,807 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:43:25,809 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:43:26,039 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:43:26,045 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:43:26,045 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-12 00:43:26,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:43:26 BoogieIcfgContainer [2023-11-12 00:43:26,048 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:43:26,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:43:26,050 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:43:26,068 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:43:26,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:43:25" (1/3) ... [2023-11-12 00:43:26,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5e8ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:43:26, skipping insertion in model container [2023-11-12 00:43:26,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:43:25" (2/3) ... [2023-11-12 00:43:26,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5e8ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:43:26, skipping insertion in model container [2023-11-12 00:43:26,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:43:26" (3/3) ... [2023-11-12 00:43:26,073 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2023-11-12 00:43:26,096 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:43:26,097 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:43:26,165 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:43:26,173 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;@56a09a48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:43:26,174 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:43:26,184 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 00:43:26,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:43:26,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:26,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:26,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:43:26,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:26,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1229941712, now seen corresponding path program 1 times [2023-11-12 00:43:26,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:43:26,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978944294] [2023-11-12 00:43:26,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:26,223 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 [2023-11-12 00:43:26,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:43:26,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:43:26,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:43:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:26,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 00:43:26,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:43:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:26,382 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:43:26,383 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:43:26,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978944294] [2023-11-12 00:43:26,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978944294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:26,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:26,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:43:26,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107153946] [2023-11-12 00:43:26,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:26,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:43:26,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:43:26,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:43:26,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:43:26,424 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:43:26,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:26,446 INFO L93 Difference]: Finished difference Result 51 states and 76 transitions. [2023-11-12 00:43:26,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:43:26,449 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-11-12 00:43:26,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:26,455 INFO L225 Difference]: With dead ends: 51 [2023-11-12 00:43:26,455 INFO L226 Difference]: Without dead ends: 24 [2023-11-12 00:43:26,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:43:26,462 INFO L413 NwaCegarLoop]: 34 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, 34 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 [2023-11-12 00:43:26,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:43:26,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-12 00:43:26,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-12 00:43:26,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 00:43:26,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2023-11-12 00:43:26,513 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 13 [2023-11-12 00:43:26,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:26,514 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2023-11-12 00:43:26,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:43:26,515 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2023-11-12 00:43:26,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 00:43:26,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:26,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:26,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:43:26,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:43:26,730 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:43:26,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:26,731 INFO L85 PathProgramCache]: Analyzing trace with hash -2003061117, now seen corresponding path program 1 times [2023-11-12 00:43:26,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:43:26,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107235426] [2023-11-12 00:43:26,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:26,733 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 [2023-11-12 00:43:26,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:43:26,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:43:26,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:43:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:26,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:43:26,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:43:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:26,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:43:26,870 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:43:26,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107235426] [2023-11-12 00:43:26,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [107235426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:26,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:26,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:43:26,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167726444] [2023-11-12 00:43:26,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:26,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:43:26,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:43:26,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:43:26,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:43:26,875 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:43:26,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:26,937 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2023-11-12 00:43:26,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:43:26,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-11-12 00:43:26,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:26,941 INFO L225 Difference]: With dead ends: 36 [2023-11-12 00:43:26,941 INFO L226 Difference]: Without dead ends: 27 [2023-11-12 00:43:26,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:43:26,943 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:26,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:43:26,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-12 00:43:26,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-12 00:43:26,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-12 00:43:26,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2023-11-12 00:43:26,953 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 14 [2023-11-12 00:43:26,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:26,953 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2023-11-12 00:43:26,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:43:26,954 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2023-11-12 00:43:26,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-12 00:43:26,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:26,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:26,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:43:27,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:43:27,168 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:43:27,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:27,169 INFO L85 PathProgramCache]: Analyzing trace with hash 579011981, now seen corresponding path program 1 times [2023-11-12 00:43:27,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:43:27,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633530712] [2023-11-12 00:43:27,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:27,170 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 [2023-11-12 00:43:27,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:43:27,174 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:43:27,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-12 00:43:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:27,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 00:43:27,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:43:27,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:43:27,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:43:27,421 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:43:27,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633530712] [2023-11-12 00:43:27,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633530712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:27,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:27,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:43:27,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186683688] [2023-11-12 00:43:27,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:27,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:43:27,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:43:27,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:43:27,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:27,425 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:43:28,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:28,283 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2023-11-12 00:43:28,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:43:28,285 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-12 00:43:28,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:28,286 INFO L225 Difference]: With dead ends: 49 [2023-11-12 00:43:28,286 INFO L226 Difference]: Without dead ends: 26 [2023-11-12 00:43:28,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:43:28,288 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 28 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:28,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 71 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 00:43:28,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-12 00:43:28,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-12 00:43:28,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 22 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 00:43:28,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2023-11-12 00:43:28,295 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 15 [2023-11-12 00:43:28,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:28,296 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2023-11-12 00:43:28,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:43:28,296 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2023-11-12 00:43:28,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-12 00:43:28,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:28,297 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:28,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:43:28,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:43:28,498 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:43:28,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:28,499 INFO L85 PathProgramCache]: Analyzing trace with hash 800680882, now seen corresponding path program 1 times [2023-11-12 00:43:28,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:43:28,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079233056] [2023-11-12 00:43:28,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:28,500 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 [2023-11-12 00:43:28,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:43:28,502 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:43:28,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-12 00:43:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:28,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:43:28,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:43:28,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 00:43:28,615 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:43:28,615 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:43:28,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079233056] [2023-11-12 00:43:28,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079233056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:28,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:28,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:43:28,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658687948] [2023-11-12 00:43:28,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:28,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:43:28,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:43:28,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:43:28,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:43:28,619 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 00:43:28,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:28,668 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2023-11-12 00:43:28,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:43:28,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-11-12 00:43:28,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:28,673 INFO L225 Difference]: With dead ends: 36 [2023-11-12 00:43:28,673 INFO L226 Difference]: Without dead ends: 27 [2023-11-12 00:43:28,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:43:28,675 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:28,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:43:28,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-12 00:43:28,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-12 00:43:28,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 00:43:28,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2023-11-12 00:43:28,692 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 22 [2023-11-12 00:43:28,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:28,697 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2023-11-12 00:43:28,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 00:43:28,698 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2023-11-12 00:43:28,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-12 00:43:28,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:28,699 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:28,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:43:28,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:43:28,900 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:43:28,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:28,901 INFO L85 PathProgramCache]: Analyzing trace with hash 802527924, now seen corresponding path program 1 times [2023-11-12 00:43:28,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:43:28,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204137380] [2023-11-12 00:43:28,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:28,902 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 [2023-11-12 00:43:28,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:43:28,904 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:43:28,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-12 00:43:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:29,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 00:43:29,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:43:29,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 00:43:29,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:43:29,098 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:43:29,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204137380] [2023-11-12 00:43:29,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204137380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:29,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:29,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:43:29,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478033695] [2023-11-12 00:43:29,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:29,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:43:29,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:43:29,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:43:29,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:43:29,101 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 00:43:29,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:29,173 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2023-11-12 00:43:29,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:43:29,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-11-12 00:43:29,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:29,175 INFO L225 Difference]: With dead ends: 39 [2023-11-12 00:43:29,175 INFO L226 Difference]: Without dead ends: 36 [2023-11-12 00:43:29,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:43:29,177 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 17 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:29,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 93 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:43:29,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-12 00:43:29,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2023-11-12 00:43:29,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 00:43:29,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2023-11-12 00:43:29,186 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 22 [2023-11-12 00:43:29,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:29,186 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2023-11-12 00:43:29,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 00:43:29,187 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2023-11-12 00:43:29,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-12 00:43:29,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:29,188 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:29,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-12 00:43:29,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:43:29,403 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:43:29,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:29,404 INFO L85 PathProgramCache]: Analyzing trace with hash -288314810, now seen corresponding path program 1 times [2023-11-12 00:43:29,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:43:29,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115221159] [2023-11-12 00:43:29,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:29,404 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 [2023-11-12 00:43:29,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:43:29,409 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:43:29,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/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 (7)] Waiting until timeout for monitored process [2023-11-12 00:43:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:43:29,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 00:43:29,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:43:29,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:43:29,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:43:29,680 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:43:29,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115221159] [2023-11-12 00:43:29,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115221159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:43:29,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:43:29,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:43:29,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104765163] [2023-11-12 00:43:29,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:43:29,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:43:29,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:43:29,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:43:29,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:43:29,686 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 00:43:30,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:43:30,317 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2023-11-12 00:43:30,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:43:30,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-11-12 00:43:30,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:43:30,320 INFO L225 Difference]: With dead ends: 38 [2023-11-12 00:43:30,320 INFO L226 Difference]: Without dead ends: 21 [2023-11-12 00:43:30,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:43:30,321 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 26 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:43:30,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 66 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 00:43:30,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-12 00:43:30,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-12 00:43:30,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 00:43:30,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2023-11-12 00:43:30,326 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 23 [2023-11-12 00:43:30,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:43:30,326 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2023-11-12 00:43:30,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 00:43:30,327 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2023-11-12 00:43:30,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-12 00:43:30,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:43:30,328 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:30,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/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 (7)] Forceful destruction successful, exit code 0 [2023-11-12 00:43:30,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:43:30,529 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:43:30,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:43:30,529 INFO L85 PathProgramCache]: Analyzing trace with hash 543069769, now seen corresponding path program 1 times [2023-11-12 00:43:30,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:43:30,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917746346] [2023-11-12 00:43:30,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:43:30,530 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 [2023-11-12 00:43:30,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:43:30,531 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:43:30,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/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 (8)] Waiting until timeout for monitored process [2023-11-12 00:43:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:43:30,642 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:43:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:43:30,736 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-12 00:43:30,736 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:43:30,738 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:43:30,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/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 (8)] Forceful destruction successful, exit code 0 [2023-11-12 00:43:30,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:43:30,943 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:43:30,947 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:43:30,975 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated [2023-11-12 00:43:30,977 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated [2023-11-12 00:43:30,980 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated [2023-11-12 00:43:30,981 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short10 could not be translated [2023-11-12 00:43:30,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:43:30 BoogieIcfgContainer [2023-11-12 00:43:30,993 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:43:30,994 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:43:30,994 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:43:30,995 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:43:30,995 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:43:26" (3/4) ... [2023-11-12 00:43:30,996 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-12 00:43:31,012 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated [2023-11-12 00:43:31,018 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated [2023-11-12 00:43:31,024 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated [2023-11-12 00:43:31,026 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short10 could not be translated [2023-11-12 00:43:31,071 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 00:43:31,072 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:43:31,072 INFO L158 Benchmark]: Toolchain (without parser) took 5874.90ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 37.8MB in the beginning and 42.8MB in the end (delta: -5.0MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. [2023-11-12 00:43:31,073 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 71.3MB. Free memory is still 47.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:43:31,074 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.12ms. Allocated memory is still 71.3MB. Free memory was 37.6MB in the beginning and 43.9MB in the end (delta: -6.3MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2023-11-12 00:43:31,074 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.41ms. Allocated memory is still 71.3MB. Free memory was 43.6MB in the beginning and 42.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:43:31,075 INFO L158 Benchmark]: Boogie Preprocessor took 61.76ms. Allocated memory is still 71.3MB. Free memory was 42.0MB in the beginning and 40.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:43:31,075 INFO L158 Benchmark]: RCFGBuilder took 447.03ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 40.4MB in the beginning and 78.3MB in the end (delta: -37.9MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2023-11-12 00:43:31,075 INFO L158 Benchmark]: TraceAbstraction took 4943.26ms. Allocated memory is still 104.9MB. Free memory was 77.5MB in the beginning and 45.4MB in the end (delta: 32.1MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2023-11-12 00:43:31,076 INFO L158 Benchmark]: Witness Printer took 77.73ms. Allocated memory is still 104.9MB. Free memory was 44.9MB in the beginning and 42.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:43:31,078 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 71.3MB. Free memory is still 47.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.12ms. Allocated memory is still 71.3MB. Free memory was 37.6MB in the beginning and 43.9MB in the end (delta: -6.3MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.41ms. Allocated memory is still 71.3MB. Free memory was 43.6MB in the beginning and 42.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 61.76ms. Allocated memory is still 71.3MB. Free memory was 42.0MB in the beginning and 40.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 447.03ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 40.4MB in the beginning and 78.3MB in the end (delta: -37.9MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * TraceAbstraction took 4943.26ms. Allocated memory is still 104.9MB. Free memory was 77.5MB in the beginning and 45.4MB in the end (delta: 32.1MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. * Witness Printer took 77.73ms. Allocated memory is still 104.9MB. Free memory was 44.9MB in the beginning and 42.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short10 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short10 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 81]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L75] float x = 0.0f; [L76] float y = -0.0f; [L77] CALL, EXPR fmax_float(x, y) [L46] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0.0] [L23] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L26] ieee_float_shape_type gf_u; [L27] EXPR gf_u.value = (x) [L28] EXPR gf_u.word [L28] EXPR (w) = gf_u.word [L25-L29] { ieee_float_shape_type gf_u; gf_u.value = (x); (w) = gf_u.word; } VAL [\old(x)=0.0, w=0, x=0.0] [L31] COND TRUE w == 0x00000000 || w == 0x80000000 [L32] return 2; VAL [\old(x)=0.0, \result=2, w=0, x=0.0] [L46] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, y=0.0] [L46] COND FALSE !(__fpclassify_float(x) == 0) [L50] CALL, EXPR __fpclassify_float(y) VAL [\old(x)=0.0] [L23] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L26] ieee_float_shape_type gf_u; [L27] EXPR gf_u.value = (x) [L28] EXPR gf_u.word [L28] EXPR (w) = gf_u.word [L25-L29] { ieee_float_shape_type gf_u; gf_u.value = (x); (w) = gf_u.word; } VAL [\old(x)=0.0, w=2147483648, x=0.0] [L31] COND TRUE w == 0x00000000 || w == 0x80000000 [L32] return 2; VAL [\old(x)=0.0, \result=2, w=2147483648, x=0.0] [L50] RET, EXPR __fpclassify_float(y) VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, y=0.0] [L50] COND FALSE !(__fpclassify_float(y) == 0) [L53] return x > y ? x : y; VAL [\old(x)=0.0, \old(y)=0.0, \result=0.0, x=0.0, y=0.0] [L77] RET, EXPR fmax_float(x, y) [L77] float res = fmax_float(x, y); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L80] CALL, EXPR __signbit_float(res) [L57] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L60] ieee_float_shape_type gf_u; [L61] EXPR gf_u.value = (x) [L62] EXPR gf_u.word [L62] EXPR (w) = gf_u.word [L59-L63] { ieee_float_shape_type gf_u; gf_u.value = (x); (w) = gf_u.word; } VAL [\old(x)=0.0, w=2147483648, x=0.0] [L65] return (w & 0x80000000) != 0; VAL [\old(x)=0.0, \result=1, w=2147483648, x=0.0] [L80] RET, EXPR __signbit_float(res) [L80] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=0.0, x=0.0, y=0.0] [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L81] reach_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.8s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 74 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71 mSDsluCounter, 425 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 271 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 126 IncrementalHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 154 mSDtfsCounter, 126 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=5, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 103 ConstructedInterpolants, 6 QuantifiedInterpolants, 277 SizeOfPredicates, 20 NumberOfNonLiveVariables, 376 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 18/18 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 proved your program to be incorrect! [2023-11-12 00:43:31,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c92f57-819c-4054-81b1-dff7c5af0787/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE