./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-29.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-29.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f738259e7c2d3662066b95c4aab3281c90ec8887937cabf5a1f2a35c9ff839d0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:14:59,877 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:14:59,973 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:14:59,979 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:14:59,979 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:15:00,001 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:15:00,001 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:15:00,002 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:15:00,002 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:15:00,003 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:15:00,003 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:15:00,004 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:15:00,004 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:15:00,005 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:15:00,005 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:15:00,006 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:15:00,006 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:15:00,006 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:15:00,007 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:15:00,007 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:15:00,007 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:15:00,011 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:15:00,012 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:15:00,012 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:15:00,016 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:15:00,016 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:15:00,017 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:15:00,027 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:15:00,027 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:15:00,027 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:15:00,028 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:15:00,028 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:15:00,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:15:00,029 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:15:00,029 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:15:00,029 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:15:00,029 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:15:00,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:15:00,030 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:15:00,031 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:15:00,031 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:15:00,032 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:15:00,032 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f738259e7c2d3662066b95c4aab3281c90ec8887937cabf5a1f2a35c9ff839d0 [2024-11-08 17:15:00,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:15:00,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:15:00,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:15:00,367 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:15:00,368 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:15:00,369 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-29.i Unable to find full path for "g++" [2024-11-08 17:15:02,363 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:15:02,587 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:15:02,588 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-29.i [2024-11-08 17:15:02,599 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/data/3221a2312/fb6c8ee0f4514f5badd29411c352d93d/FLAGbc860581b [2024-11-08 17:15:02,619 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/data/3221a2312/fb6c8ee0f4514f5badd29411c352d93d [2024-11-08 17:15:02,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:15:02,626 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:15:02,630 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:15:02,630 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:15:02,636 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:15:02,637 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:15:02" (1/1) ... [2024-11-08 17:15:02,638 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d0f8c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:02, skipping insertion in model container [2024-11-08 17:15:02,639 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:15:02" (1/1) ... [2024-11-08 17:15:02,678 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:15:02,932 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-29.i[916,929] [2024-11-08 17:15:03,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:15:03,026 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:15:03,040 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-29.i[916,929] [2024-11-08 17:15:03,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:15:03,103 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:15:03,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:03 WrapperNode [2024-11-08 17:15:03,104 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:15:03,105 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:15:03,106 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:15:03,106 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:15:03,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:03" (1/1) ... [2024-11-08 17:15:03,131 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:03" (1/1) ... [2024-11-08 17:15:03,176 INFO L138 Inliner]: procedures = 30, calls = 126, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 417 [2024-11-08 17:15:03,177 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:15:03,178 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:15:03,178 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:15:03,178 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:15:03,190 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:03" (1/1) ... [2024-11-08 17:15:03,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:03" (1/1) ... [2024-11-08 17:15:03,195 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:03" (1/1) ... [2024-11-08 17:15:03,203 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-11-08 17:15:03,203 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:03" (1/1) ... [2024-11-08 17:15:03,203 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:03" (1/1) ... [2024-11-08 17:15:03,220 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:03" (1/1) ... [2024-11-08 17:15:03,225 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:03" (1/1) ... [2024-11-08 17:15:03,228 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:03" (1/1) ... [2024-11-08 17:15:03,230 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:03" (1/1) ... [2024-11-08 17:15:03,235 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:15:03,240 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:15:03,240 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:15:03,241 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:15:03,242 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:03" (1/1) ... [2024-11-08 17:15:03,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:15:03,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:15:03,284 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:15:03,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:15:03,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:15:03,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-08 17:15:03,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2024-11-08 17:15:03,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-08 17:15:03,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-08 17:15:03,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-11-08 17:15:03,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-08 17:15:03,322 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-08 17:15:03,322 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-08 17:15:03,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-08 17:15:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:15:03,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:15:03,494 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:15:03,497 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:15:04,081 INFO L? ?]: Removed 116 outVars from TransFormulas that were not future-live. [2024-11-08 17:15:04,081 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:15:04,106 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:15:04,106 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 17:15:04,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:15:04 BoogieIcfgContainer [2024-11-08 17:15:04,107 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:15:04,112 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:15:04,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:15:04,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:15:04,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:15:02" (1/3) ... [2024-11-08 17:15:04,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34db7597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:15:04, skipping insertion in model container [2024-11-08 17:15:04,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:03" (2/3) ... [2024-11-08 17:15:04,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34db7597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:15:04, skipping insertion in model container [2024-11-08 17:15:04,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:15:04" (3/3) ... [2024-11-08 17:15:04,123 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-29.i [2024-11-08 17:15:04,143 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:15:04,143 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:15:04,211 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:15:04,217 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, 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;@449dc0e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:15:04,218 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 17:15:04,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 80 states have internal predecessors, (115), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:15:04,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 17:15:04,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:04,235 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:04,235 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:15:04,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:04,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1489561218, now seen corresponding path program 1 times [2024-11-08 17:15:04,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:04,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347677913] [2024-11-08 17:15:04,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:04,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:04,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:15:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:04,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-08 17:15:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:04,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 17:15:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:04,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-08 17:15:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:04,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-08 17:15:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:04,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-08 17:15:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:04,747 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 17:15:04,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:04,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347677913] [2024-11-08 17:15:04,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347677913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:15:04,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:15:04,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:15:04,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103394746] [2024-11-08 17:15:04,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:15:04,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 17:15:04,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:15:04,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 17:15:04,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:15:04,796 INFO L87 Difference]: Start difference. First operand has 88 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 80 states have internal predecessors, (115), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 17:15:04,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:15:04,843 INFO L93 Difference]: Finished difference Result 169 states and 254 transitions. [2024-11-08 17:15:04,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 17:15:04,846 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2024-11-08 17:15:04,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:15:04,856 INFO L225 Difference]: With dead ends: 169 [2024-11-08 17:15:04,856 INFO L226 Difference]: Without dead ends: 84 [2024-11-08 17:15:04,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:15:04,868 INFO L432 NwaCegarLoop]: 120 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, 120 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:15:04,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:15:04,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-08 17:15:04,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-08 17:15:04,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 76 states have internal predecessors, (108), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:15:04,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 120 transitions. [2024-11-08 17:15:04,918 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 120 transitions. Word has length 73 [2024-11-08 17:15:04,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:15:04,918 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 120 transitions. [2024-11-08 17:15:04,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 17:15:04,919 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 120 transitions. [2024-11-08 17:15:04,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 17:15:04,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:04,922 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:04,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:15:04,925 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:15:04,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:04,926 INFO L85 PathProgramCache]: Analyzing trace with hash 784635190, now seen corresponding path program 1 times [2024-11-08 17:15:04,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:04,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931937] [2024-11-08 17:15:04,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:04,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:05,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:15:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:05,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-08 17:15:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:05,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 17:15:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:05,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-08 17:15:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:05,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-08 17:15:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:05,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-08 17:15:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:05,298 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 17:15:05,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:05,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931937] [2024-11-08 17:15:05,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:15:05,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:15:05,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:15:05,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001417935] [2024-11-08 17:15:05,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:15:05,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:15:05,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:15:05,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:15:05,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:15:05,303 INFO L87 Difference]: Start difference. First operand 84 states and 120 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:15:05,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:15:05,351 INFO L93 Difference]: Finished difference Result 168 states and 241 transitions. [2024-11-08 17:15:05,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:15:05,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 73 [2024-11-08 17:15:05,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:15:05,353 INFO L225 Difference]: With dead ends: 168 [2024-11-08 17:15:05,354 INFO L226 Difference]: Without dead ends: 87 [2024-11-08 17:15:05,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:15:05,356 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 1 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:15:05,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 340 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:15:05,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-08 17:15:05,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2024-11-08 17:15:05,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 78 states have (on average 1.4102564102564104) internal successors, (110), 78 states have internal predecessors, (110), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:15:05,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 122 transitions. [2024-11-08 17:15:05,366 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 122 transitions. Word has length 73 [2024-11-08 17:15:05,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:15:05,368 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 122 transitions. [2024-11-08 17:15:05,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:15:05,369 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 122 transitions. [2024-11-08 17:15:05,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 17:15:05,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:05,371 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:05,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:15:05,372 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:15:05,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:05,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1735324744, now seen corresponding path program 1 times [2024-11-08 17:15:05,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:05,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918494984] [2024-11-08 17:15:05,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:05,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:05,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 17:15:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:05,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-08 17:15:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:05,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 17:15:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:05,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-08 17:15:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:05,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-08 17:15:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:05,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-08 17:15:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 17:15:05,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:05,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918494984] [2024-11-08 17:15:05,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918494984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:15:05,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:15:05,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:15:05,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438033338] [2024-11-08 17:15:05,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:15:05,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:15:05,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:15:05,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:15:05,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:15:05,656 INFO L87 Difference]: Start difference. First operand 86 states and 122 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:15:05,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:15:05,756 INFO L93 Difference]: Finished difference Result 172 states and 245 transitions. [2024-11-08 17:15:05,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:15:05,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 73 [2024-11-08 17:15:05,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:15:05,759 INFO L225 Difference]: With dead ends: 172 [2024-11-08 17:15:05,759 INFO L226 Difference]: Without dead ends: 89 [2024-11-08 17:15:05,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:15:05,764 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 1 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:15:05,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 343 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:15:05,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-08 17:15:05,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2024-11-08 17:15:05,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 80 states have (on average 1.4) internal successors, (112), 80 states have internal predecessors, (112), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:15:05,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 124 transitions. [2024-11-08 17:15:05,779 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 124 transitions. Word has length 73 [2024-11-08 17:15:05,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:15:05,780 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 124 transitions. [2024-11-08 17:15:05,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:15:05,780 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 124 transitions. [2024-11-08 17:15:05,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 17:15:05,785 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:05,786 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:05,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:15:05,786 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:15:05,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:05,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1733477702, now seen corresponding path program 1 times [2024-11-08 17:15:05,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:05,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490043316] [2024-11-08 17:15:05,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:05,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 17:15:05,908 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 17:15:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 17:15:06,048 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 17:15:06,048 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 17:15:06,050 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-08 17:15:06,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:15:06,055 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-08 17:15:06,108 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 17:15:06,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 05:15:06 BoogieIcfgContainer [2024-11-08 17:15:06,111 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 17:15:06,112 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 17:15:06,112 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 17:15:06,112 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 17:15:06,113 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:15:04" (3/4) ... [2024-11-08 17:15:06,116 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 17:15:06,117 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 17:15:06,118 INFO L158 Benchmark]: Toolchain (without parser) took 3491.68ms. Allocated memory was 161.5MB in the beginning and 213.9MB in the end (delta: 52.4MB). Free memory was 126.7MB in the beginning and 135.4MB in the end (delta: -8.6MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. [2024-11-08 17:15:06,118 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 161.5MB. Free memory is still 128.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 17:15:06,119 INFO L158 Benchmark]: CACSL2BoogieTranslator took 475.03ms. Allocated memory is still 161.5MB. Free memory was 126.2MB in the beginning and 110.0MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-08 17:15:06,119 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.73ms. Allocated memory is still 161.5MB. Free memory was 110.0MB in the beginning and 106.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 17:15:06,120 INFO L158 Benchmark]: Boogie Preprocessor took 58.14ms. Allocated memory is still 161.5MB. Free memory was 106.3MB in the beginning and 103.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 17:15:06,120 INFO L158 Benchmark]: RCFGBuilder took 867.45ms. Allocated memory is still 161.5MB. Free memory was 102.6MB in the beginning and 73.8MB in the end (delta: 28.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-11-08 17:15:06,121 INFO L158 Benchmark]: TraceAbstraction took 1999.03ms. Allocated memory was 161.5MB in the beginning and 213.9MB in the end (delta: 52.4MB). Free memory was 72.7MB in the beginning and 136.4MB in the end (delta: -63.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 17:15:06,121 INFO L158 Benchmark]: Witness Printer took 5.43ms. Allocated memory is still 213.9MB. Free memory was 136.4MB in the beginning and 135.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 17:15:06,124 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 161.5MB. Free memory is still 128.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 475.03ms. Allocated memory is still 161.5MB. Free memory was 126.2MB in the beginning and 110.0MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.73ms. Allocated memory is still 161.5MB. Free memory was 110.0MB in the beginning and 106.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.14ms. Allocated memory is still 161.5MB. Free memory was 106.3MB in the beginning and 103.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 867.45ms. Allocated memory is still 161.5MB. Free memory was 102.6MB in the beginning and 73.8MB in the end (delta: 28.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1999.03ms. Allocated memory was 161.5MB in the beginning and 213.9MB in the end (delta: 52.4MB). Free memory was 72.7MB in the beginning and 136.4MB in the end (delta: -63.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.43ms. Allocated memory is still 213.9MB. Free memory was 136.4MB in the beginning and 135.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: 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 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 59. Possible FailurePath: [L34] unsigned char isInitial = 0; [L35-L46] struct WrapperStruct00 WrapperStruct00 = { 2.5, 9.3, 3.4, 32, 1, 8, 5, 1, 1, 8 }; VAL [WrapperStruct00={4:0}, isInitial=0] [L95] isInitial = 1 [L96] FCALL initially() [L97] COND TRUE 1 [L98] FCALL updateLastVariables() [L99] CALL updateVariables() [L77] WrapperStruct00.var_1_3 = __VERIFIER_nondet_float() [L78] EXPR WrapperStruct00.var_1_3 [L78] EXPR WrapperStruct00.var_1_3 >= -922337.2036854765600e+13F && WrapperStruct00.var_1_3 <= -1.0e-20F [L78] EXPR WrapperStruct00.var_1_3 [L78] EXPR WrapperStruct00.var_1_3 >= -922337.2036854765600e+13F && WrapperStruct00.var_1_3 <= -1.0e-20F VAL [WrapperStruct00={4:0}, isInitial=1] [L78] EXPR (WrapperStruct00.var_1_3 >= -922337.2036854765600e+13F && WrapperStruct00.var_1_3 <= -1.0e-20F) || (WrapperStruct00.var_1_3 <= 9223372.036854765600e+12F && WrapperStruct00.var_1_3 >= 1.0e-20F ) VAL [WrapperStruct00={4:0}, isInitial=1] [L78] CALL assume_abort_if_not((WrapperStruct00.var_1_3 >= -922337.2036854765600e+13F && WrapperStruct00.var_1_3 <= -1.0e-20F) || (WrapperStruct00.var_1_3 <= 9223372.036854765600e+12F && WrapperStruct00.var_1_3 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L78] RET assume_abort_if_not((WrapperStruct00.var_1_3 >= -922337.2036854765600e+13F && WrapperStruct00.var_1_3 <= -1.0e-20F) || (WrapperStruct00.var_1_3 <= 9223372.036854765600e+12F && WrapperStruct00.var_1_3 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, isInitial=1] [L79] WrapperStruct00.var_1_4 = __VERIFIER_nondet_float() [L80] EXPR WrapperStruct00.var_1_4 [L80] EXPR WrapperStruct00.var_1_4 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_4 <= -1.0e-20F [L80] EXPR WrapperStruct00.var_1_4 [L80] EXPR WrapperStruct00.var_1_4 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_4 <= -1.0e-20F VAL [WrapperStruct00={4:0}, isInitial=1] [L80] EXPR (WrapperStruct00.var_1_4 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_4 <= -1.0e-20F) || (WrapperStruct00.var_1_4 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_4 >= 1.0e-20F ) VAL [WrapperStruct00={4:0}, isInitial=1] [L80] CALL assume_abort_if_not((WrapperStruct00.var_1_4 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_4 <= -1.0e-20F) || (WrapperStruct00.var_1_4 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_4 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L80] RET assume_abort_if_not((WrapperStruct00.var_1_4 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_4 <= -1.0e-20F) || (WrapperStruct00.var_1_4 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_4 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, isInitial=1] [L81] WrapperStruct00.var_1_11 = __VERIFIER_nondet_uchar() [L82] EXPR WrapperStruct00.var_1_11 VAL [WrapperStruct00={4:0}, isInitial=1] [L82] CALL assume_abort_if_not(WrapperStruct00.var_1_11 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L82] RET assume_abort_if_not(WrapperStruct00.var_1_11 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L83] EXPR WrapperStruct00.var_1_11 VAL [WrapperStruct00={4:0}, isInitial=1] [L83] CALL assume_abort_if_not(WrapperStruct00.var_1_11 <= 254) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L83] RET assume_abort_if_not(WrapperStruct00.var_1_11 <= 254) VAL [WrapperStruct00={4:0}, isInitial=1] [L84] WrapperStruct00.var_1_13 = __VERIFIER_nondet_uchar() [L85] EXPR WrapperStruct00.var_1_13 VAL [WrapperStruct00={4:0}, isInitial=1] [L85] CALL assume_abort_if_not(WrapperStruct00.var_1_13 >= 1) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L85] RET assume_abort_if_not(WrapperStruct00.var_1_13 >= 1) VAL [WrapperStruct00={4:0}, isInitial=1] [L86] EXPR WrapperStruct00.var_1_13 VAL [WrapperStruct00={4:0}, isInitial=1] [L86] CALL assume_abort_if_not(WrapperStruct00.var_1_13 <= 1) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L86] RET assume_abort_if_not(WrapperStruct00.var_1_13 <= 1) VAL [WrapperStruct00={4:0}, isInitial=1] [L99] RET updateVariables() [L100] CALL step() [L50] EXPR WrapperStruct00.var_1_13 [L50] WrapperStruct00.var_1_12 = WrapperStruct00.var_1_13 [L51] EXPR WrapperStruct00.var_1_11 [L51] WrapperStruct00.var_1_14 = WrapperStruct00.var_1_11 [L52] WrapperStruct00.var_1_12 VAL [WrapperStruct00={4:0}, isInitial=1] [L52] COND TRUE WrapperStruct00.var_1_12 [L53] EXPR WrapperStruct00.var_1_3 [L53] WrapperStruct00.var_1_1 = WrapperStruct00.var_1_3 [L59] EXPR WrapperStruct00.var_1_1 [L59] EXPR WrapperStruct00.var_1_1 [L59] EXPR WrapperStruct00.var_1_3 VAL [WrapperStruct00={4:0}, isInitial=1] [L59] COND FALSE !((WrapperStruct00.var_1_1 + 8.125) > (WrapperStruct00.var_1_1 * WrapperStruct00.var_1_3)) [L62] EXPR WrapperStruct00.var_1_14 [L62] WrapperStruct00.var_1_5 = WrapperStruct00.var_1_14 [L64] EXPR WrapperStruct00.var_1_14 [L64] signed long int stepLocal_0 = 5 * WrapperStruct00.var_1_14; [L65] EXPR WrapperStruct00.var_1_3 [L65] EXPR WrapperStruct00.var_1_1 VAL [WrapperStruct00={4:0}, isInitial=1, stepLocal_0=1270] [L65] EXPR ((WrapperStruct00.var_1_3) < (WrapperStruct00.var_1_1)) ? (WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_1) [L65] EXPR WrapperStruct00.var_1_3 [L65] EXPR ((WrapperStruct00.var_1_3) < (WrapperStruct00.var_1_1)) ? (WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_1) VAL [WrapperStruct00={4:0}, isInitial=1, stepLocal_0=1270] [L65] EXPR WrapperStruct00.var_1_1 VAL [WrapperStruct00={4:0}, isInitial=1, stepLocal_0=1270] [L65] COND FALSE !(((((WrapperStruct00.var_1_3) < (WrapperStruct00.var_1_1)) ? (WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_1))) == WrapperStruct00.var_1_1) [L72] EXPR WrapperStruct00.var_1_1 [L72] EXPR WrapperStruct00.var_1_3 VAL [WrapperStruct00={4:0}, isInitial=1, stepLocal_0=1270] [L72] COND TRUE WrapperStruct00.var_1_1 < WrapperStruct00.var_1_3 [L73] EXPR WrapperStruct00.var_1_11 [L73] WrapperStruct00.var_1_10 = WrapperStruct00.var_1_11 [L100] RET step() [L101] CALL, EXPR property() [L91] EXPR WrapperStruct00.var_1_12 VAL [WrapperStruct00={4:0}, isInitial=1] [L91] EXPR WrapperStruct00.var_1_12 ? (WrapperStruct00.var_1_1 == ((float) WrapperStruct00.var_1_3)) : ((! (WrapperStruct00.var_1_3 < WrapperStruct00.var_1_4)) ? (WrapperStruct00.var_1_1 == ((float) ((((WrapperStruct00.var_1_3) < 0 ) ? -(WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_3))))) : 1) [L91] EXPR WrapperStruct00.var_1_1 [L91] EXPR WrapperStruct00.var_1_3 [L91] EXPR WrapperStruct00.var_1_12 ? (WrapperStruct00.var_1_1 == ((float) WrapperStruct00.var_1_3)) : ((! (WrapperStruct00.var_1_3 < WrapperStruct00.var_1_4)) ? (WrapperStruct00.var_1_1 == ((float) ((((WrapperStruct00.var_1_3) < 0 ) ? -(WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_3))))) : 1) VAL [WrapperStruct00={4:0}, isInitial=1] [L91] EXPR (WrapperStruct00.var_1_12 ? (WrapperStruct00.var_1_1 == ((float) WrapperStruct00.var_1_3)) : ((! (WrapperStruct00.var_1_3 < WrapperStruct00.var_1_4)) ? (WrapperStruct00.var_1_1 == ((float) ((((WrapperStruct00.var_1_3) < 0 ) ? -(WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_3))))) : 1)) && (((WrapperStruct00.var_1_1 + 8.125) > (WrapperStruct00.var_1_1 * WrapperStruct00.var_1_3)) ? (WrapperStruct00.var_1_5 == ((unsigned short int) (((((WrapperStruct00.var_1_14 + WrapperStruct00.var_1_14)) > (WrapperStruct00.var_1_14)) ? ((WrapperStruct00.var_1_14 + WrapperStruct00.var_1_14)) : (WrapperStruct00.var_1_14))))) : (WrapperStruct00.var_1_5 == ((unsigned short int) WrapperStruct00.var_1_14))) VAL [WrapperStruct00={4:0}, isInitial=1] [L91] EXPR ((WrapperStruct00.var_1_12 ? (WrapperStruct00.var_1_1 == ((float) WrapperStruct00.var_1_3)) : ((! (WrapperStruct00.var_1_3 < WrapperStruct00.var_1_4)) ? (WrapperStruct00.var_1_1 == ((float) ((((WrapperStruct00.var_1_3) < 0 ) ? -(WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_3))))) : 1)) && (((WrapperStruct00.var_1_1 + 8.125) > (WrapperStruct00.var_1_1 * WrapperStruct00.var_1_3)) ? (WrapperStruct00.var_1_5 == ((unsigned short int) (((((WrapperStruct00.var_1_14 + WrapperStruct00.var_1_14)) > (WrapperStruct00.var_1_14)) ? ((WrapperStruct00.var_1_14 + WrapperStruct00.var_1_14)) : (WrapperStruct00.var_1_14))))) : (WrapperStruct00.var_1_5 == ((unsigned short int) WrapperStruct00.var_1_14)))) && ((((((WrapperStruct00.var_1_3) < (WrapperStruct00.var_1_1)) ? (WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_1))) == WrapperStruct00.var_1_1) ? ((WrapperStruct00.var_1_14 > (5 * WrapperStruct00.var_1_14)) ? ((WrapperStruct00.var_1_1 < (WrapperStruct00.var_1_1 * 256.5f)) ? (WrapperStruct00.var_1_9 == ((unsigned short int) WrapperStruct00.var_1_14)) : 1) : 1) : 1) VAL [WrapperStruct00={4:0}, isInitial=1] [L91] EXPR (((WrapperStruct00.var_1_12 ? (WrapperStruct00.var_1_1 == ((float) WrapperStruct00.var_1_3)) : ((! (WrapperStruct00.var_1_3 < WrapperStruct00.var_1_4)) ? (WrapperStruct00.var_1_1 == ((float) ((((WrapperStruct00.var_1_3) < 0 ) ? -(WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_3))))) : 1)) && (((WrapperStruct00.var_1_1 + 8.125) > (WrapperStruct00.var_1_1 * WrapperStruct00.var_1_3)) ? (WrapperStruct00.var_1_5 == ((unsigned short int) (((((WrapperStruct00.var_1_14 + WrapperStruct00.var_1_14)) > (WrapperStruct00.var_1_14)) ? ((WrapperStruct00.var_1_14 + WrapperStruct00.var_1_14)) : (WrapperStruct00.var_1_14))))) : (WrapperStruct00.var_1_5 == ((unsigned short int) WrapperStruct00.var_1_14)))) && ((((((WrapperStruct00.var_1_3) < (WrapperStruct00.var_1_1)) ? (WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_1))) == WrapperStruct00.var_1_1) ? ((WrapperStruct00.var_1_14 > (5 * WrapperStruct00.var_1_14)) ? ((WrapperStruct00.var_1_1 < (WrapperStruct00.var_1_1 * 256.5f)) ? (WrapperStruct00.var_1_9 == ((unsigned short int) WrapperStruct00.var_1_14)) : 1) : 1) : 1)) && ((WrapperStruct00.var_1_1 < WrapperStruct00.var_1_3) ? (WrapperStruct00.var_1_10 == ((unsigned char) WrapperStruct00.var_1_11)) : 1) VAL [WrapperStruct00={4:0}, isInitial=1] [L91] EXPR ((((WrapperStruct00.var_1_12 ? (WrapperStruct00.var_1_1 == ((float) WrapperStruct00.var_1_3)) : ((! (WrapperStruct00.var_1_3 < WrapperStruct00.var_1_4)) ? (WrapperStruct00.var_1_1 == ((float) ((((WrapperStruct00.var_1_3) < 0 ) ? -(WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_3))))) : 1)) && (((WrapperStruct00.var_1_1 + 8.125) > (WrapperStruct00.var_1_1 * WrapperStruct00.var_1_3)) ? (WrapperStruct00.var_1_5 == ((unsigned short int) (((((WrapperStruct00.var_1_14 + WrapperStruct00.var_1_14)) > (WrapperStruct00.var_1_14)) ? ((WrapperStruct00.var_1_14 + WrapperStruct00.var_1_14)) : (WrapperStruct00.var_1_14))))) : (WrapperStruct00.var_1_5 == ((unsigned short int) WrapperStruct00.var_1_14)))) && ((((((WrapperStruct00.var_1_3) < (WrapperStruct00.var_1_1)) ? (WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_1))) == WrapperStruct00.var_1_1) ? ((WrapperStruct00.var_1_14 > (5 * WrapperStruct00.var_1_14)) ? ((WrapperStruct00.var_1_1 < (WrapperStruct00.var_1_1 * 256.5f)) ? (WrapperStruct00.var_1_9 == ((unsigned short int) WrapperStruct00.var_1_14)) : 1) : 1) : 1)) && ((WrapperStruct00.var_1_1 < WrapperStruct00.var_1_3) ? (WrapperStruct00.var_1_10 == ((unsigned char) WrapperStruct00.var_1_11)) : 1)) && (WrapperStruct00.var_1_12 == ((unsigned char) WrapperStruct00.var_1_13)) VAL [WrapperStruct00={4:0}, isInitial=1] [L91] EXPR (((((WrapperStruct00.var_1_12 ? (WrapperStruct00.var_1_1 == ((float) WrapperStruct00.var_1_3)) : ((! (WrapperStruct00.var_1_3 < WrapperStruct00.var_1_4)) ? (WrapperStruct00.var_1_1 == ((float) ((((WrapperStruct00.var_1_3) < 0 ) ? -(WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_3))))) : 1)) && (((WrapperStruct00.var_1_1 + 8.125) > (WrapperStruct00.var_1_1 * WrapperStruct00.var_1_3)) ? (WrapperStruct00.var_1_5 == ((unsigned short int) (((((WrapperStruct00.var_1_14 + WrapperStruct00.var_1_14)) > (WrapperStruct00.var_1_14)) ? ((WrapperStruct00.var_1_14 + WrapperStruct00.var_1_14)) : (WrapperStruct00.var_1_14))))) : (WrapperStruct00.var_1_5 == ((unsigned short int) WrapperStruct00.var_1_14)))) && ((((((WrapperStruct00.var_1_3) < (WrapperStruct00.var_1_1)) ? (WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_1))) == WrapperStruct00.var_1_1) ? ((WrapperStruct00.var_1_14 > (5 * WrapperStruct00.var_1_14)) ? ((WrapperStruct00.var_1_1 < (WrapperStruct00.var_1_1 * 256.5f)) ? (WrapperStruct00.var_1_9 == ((unsigned short int) WrapperStruct00.var_1_14)) : 1) : 1) : 1)) && ((WrapperStruct00.var_1_1 < WrapperStruct00.var_1_3) ? (WrapperStruct00.var_1_10 == ((unsigned char) WrapperStruct00.var_1_11)) : 1)) && (WrapperStruct00.var_1_12 == ((unsigned char) WrapperStruct00.var_1_13))) && (WrapperStruct00.var_1_14 == ((unsigned char) WrapperStruct00.var_1_11)) VAL [WrapperStruct00={4:0}, isInitial=1] [L91-L92] return (((((WrapperStruct00.var_1_12 ? (WrapperStruct00.var_1_1 == ((float) WrapperStruct00.var_1_3)) : ((! (WrapperStruct00.var_1_3 < WrapperStruct00.var_1_4)) ? (WrapperStruct00.var_1_1 == ((float) ((((WrapperStruct00.var_1_3) < 0 ) ? -(WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_3))))) : 1)) && (((WrapperStruct00.var_1_1 + 8.125) > (WrapperStruct00.var_1_1 * WrapperStruct00.var_1_3)) ? (WrapperStruct00.var_1_5 == ((unsigned short int) (((((WrapperStruct00.var_1_14 + WrapperStruct00.var_1_14)) > (WrapperStruct00.var_1_14)) ? ((WrapperStruct00.var_1_14 + WrapperStruct00.var_1_14)) : (WrapperStruct00.var_1_14))))) : (WrapperStruct00.var_1_5 == ((unsigned short int) WrapperStruct00.var_1_14)))) && ((((((WrapperStruct00.var_1_3) < (WrapperStruct00.var_1_1)) ? (WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_1))) == WrapperStruct00.var_1_1) ? ((WrapperStruct00.var_1_14 > (5 * WrapperStruct00.var_1_14)) ? ((WrapperStruct00.var_1_1 < (WrapperStruct00.var_1_1 * 256.5f)) ? (WrapperStruct00.var_1_9 == ((unsigned short int) WrapperStruct00.var_1_14)) : 1) : 1) : 1)) && ((WrapperStruct00.var_1_1 < WrapperStruct00.var_1_3) ? (WrapperStruct00.var_1_10 == ((unsigned char) WrapperStruct00.var_1_11)) : 1)) && (WrapperStruct00.var_1_12 == ((unsigned char) WrapperStruct00.var_1_13))) && (WrapperStruct00.var_1_14 == ((unsigned char) WrapperStruct00.var_1_11)) ; [L101] RET, EXPR property() [L101] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [WrapperStruct00={4:0}, isInitial=1] [L19] reach_error() VAL [WrapperStruct00={4:0}, isInitial=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 803 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 449 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33 IncrementalHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 354 mSDtfsCounter, 33 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 292 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 216 ConstructedInterpolants, 0 QuantifiedInterpolants, 220 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 180/180 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-08 17:15:06,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-29.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f738259e7c2d3662066b95c4aab3281c90ec8887937cabf5a1f2a35c9ff839d0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:15:08,693 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:15:08,805 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-08 17:15:08,813 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:15:08,814 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:15:08,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:15:08,860 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:15:08,861 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:15:08,862 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:15:08,863 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:15:08,863 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:15:08,863 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:15:08,864 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:15:08,866 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:15:08,868 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:15:08,869 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:15:08,869 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:15:08,870 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:15:08,870 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:15:08,870 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:15:08,871 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:15:08,875 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:15:08,875 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:15:08,876 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 17:15:08,876 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-08 17:15:08,876 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:15:08,876 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-08 17:15:08,877 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:15:08,877 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:15:08,877 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:15:08,878 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:15:08,878 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:15:08,878 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:15:08,882 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:15:08,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:15:08,883 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:15:08,883 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:15:08,884 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:15:08,884 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-08 17:15:08,885 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 17:15:08,885 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:15:08,897 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:15:08,898 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:15:08,898 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:15:08,898 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f738259e7c2d3662066b95c4aab3281c90ec8887937cabf5a1f2a35c9ff839d0 [2024-11-08 17:15:09,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:15:09,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:15:09,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:15:09,347 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:15:09,347 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:15:09,349 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-29.i Unable to find full path for "g++" [2024-11-08 17:15:11,487 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:15:11,716 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:15:11,717 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-29.i [2024-11-08 17:15:11,729 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/data/8ff46a421/44e02e7d28e64fc7be8e8e48029ce907/FLAG94a1b9444 [2024-11-08 17:15:11,750 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/data/8ff46a421/44e02e7d28e64fc7be8e8e48029ce907 [2024-11-08 17:15:11,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:15:11,757 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:15:11,761 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:15:11,761 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:15:11,767 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:15:11,768 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:15:11" (1/1) ... [2024-11-08 17:15:11,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@797fb761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:11, skipping insertion in model container [2024-11-08 17:15:11,773 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:15:11" (1/1) ... [2024-11-08 17:15:11,813 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:15:12,028 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-29.i[916,929] [2024-11-08 17:15:12,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:15:12,099 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:15:12,114 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-29.i[916,929] [2024-11-08 17:15:12,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:15:12,201 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:15:12,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:12 WrapperNode [2024-11-08 17:15:12,202 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:15:12,203 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:15:12,203 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:15:12,203 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:15:12,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:12" (1/1) ... [2024-11-08 17:15:12,235 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:12" (1/1) ... [2024-11-08 17:15:12,293 INFO L138 Inliner]: procedures = 34, calls = 126, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 416 [2024-11-08 17:15:12,294 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:15:12,294 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:15:12,295 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:15:12,295 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:15:12,309 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:12" (1/1) ... [2024-11-08 17:15:12,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:12" (1/1) ... [2024-11-08 17:15:12,321 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:12" (1/1) ... [2024-11-08 17:15:12,358 INFO L175 MemorySlicer]: Split 109 memory accesses to 2 slices as follows [2, 107]. 98 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 23 writes are split as follows [0, 23]. [2024-11-08 17:15:12,358 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:12" (1/1) ... [2024-11-08 17:15:12,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:12" (1/1) ... [2024-11-08 17:15:12,376 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:12" (1/1) ... [2024-11-08 17:15:12,380 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:12" (1/1) ... [2024-11-08 17:15:12,383 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:12" (1/1) ... [2024-11-08 17:15:12,385 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:12" (1/1) ... [2024-11-08 17:15:12,390 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:15:12,391 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:15:12,391 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:15:12,392 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:15:12,396 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:12" (1/1) ... [2024-11-08 17:15:12,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:15:12,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:15:12,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:15:12,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:15:12,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:15:12,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-08 17:15:12,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-08 17:15:12,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-08 17:15:12,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-08 17:15:12,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2024-11-08 17:15:12,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2024-11-08 17:15:12,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2024-11-08 17:15:12,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2024-11-08 17:15:12,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2024-11-08 17:15:12,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2024-11-08 17:15:12,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2#0 [2024-11-08 17:15:12,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2#1 [2024-11-08 17:15:12,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#0 [2024-11-08 17:15:12,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#1 [2024-11-08 17:15:12,487 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-08 17:15:12,488 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-08 17:15:12,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#0 [2024-11-08 17:15:12,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#1 [2024-11-08 17:15:12,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:15:12,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:15:12,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-11-08 17:15:12,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-11-08 17:15:12,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2024-11-08 17:15:12,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2024-11-08 17:15:12,655 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:15:12,658 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:15:24,254 INFO L? ?]: Removed 120 outVars from TransFormulas that were not future-live. [2024-11-08 17:15:24,255 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:15:24,274 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:15:24,274 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 17:15:24,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:15:24 BoogieIcfgContainer [2024-11-08 17:15:24,275 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:15:24,279 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:15:24,279 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:15:24,283 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:15:24,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:15:11" (1/3) ... [2024-11-08 17:15:24,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13570676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:15:24, skipping insertion in model container [2024-11-08 17:15:24,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:12" (2/3) ... [2024-11-08 17:15:24,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13570676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:15:24, skipping insertion in model container [2024-11-08 17:15:24,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:15:24" (3/3) ... [2024-11-08 17:15:24,288 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-29.i [2024-11-08 17:15:24,304 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:15:24,305 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:15:24,382 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:15:24,389 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, 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;@63a43dd0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:15:24,389 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 17:15:24,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 80 states have internal predecessors, (115), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:15:24,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 17:15:24,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:24,406 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:24,406 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:15:24,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:24,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1386394520, now seen corresponding path program 1 times [2024-11-08 17:15:24,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:15:24,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89423897] [2024-11-08 17:15:24,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:24,432 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:15:24,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 17:15:24,437 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 17:15:24,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-08 17:15:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:24,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-08 17:15:24,951 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:15:24,990 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-08 17:15:24,990 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:15:24,991 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:15:24,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89423897] [2024-11-08 17:15:24,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89423897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:15:24,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:15:24,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:15:24,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900504630] [2024-11-08 17:15:24,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:15:25,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 17:15:25,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:15:25,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 17:15:25,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:15:25,040 INFO L87 Difference]: Start difference. First operand has 88 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 80 states have internal predecessors, (115), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 17:15:25,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:15:25,085 INFO L93 Difference]: Finished difference Result 169 states and 254 transitions. [2024-11-08 17:15:25,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 17:15:25,088 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2024-11-08 17:15:25,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:15:25,097 INFO L225 Difference]: With dead ends: 169 [2024-11-08 17:15:25,098 INFO L226 Difference]: Without dead ends: 84 [2024-11-08 17:15:25,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:15:25,107 INFO L432 NwaCegarLoop]: 120 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, 120 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:15:25,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:15:25,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-08 17:15:25,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-08 17:15:25,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 76 states have internal predecessors, (108), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:15:25,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 120 transitions. [2024-11-08 17:15:25,164 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 120 transitions. Word has length 73 [2024-11-08 17:15:25,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:15:25,164 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 120 transitions. [2024-11-08 17:15:25,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 17:15:25,165 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 120 transitions. [2024-11-08 17:15:25,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 17:15:25,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:25,169 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:25,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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)] Ended with exit code 0 [2024-11-08 17:15:25,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:15:25,371 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:15:25,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:25,372 INFO L85 PathProgramCache]: Analyzing trace with hash -634376368, now seen corresponding path program 1 times [2024-11-08 17:15:25,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:15:25,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676838880] [2024-11-08 17:15:25,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:25,373 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:15:25,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 17:15:25,392 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 17:15:25,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-08 17:15:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:25,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:15:25,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:15:25,940 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-08 17:15:25,940 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:15:25,941 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:15:25,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676838880] [2024-11-08 17:15:25,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676838880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:15:25,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:15:25,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:15:25,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056749544] [2024-11-08 17:15:25,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:15:25,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:15:25,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:15:25,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:15:25,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:15:25,949 INFO L87 Difference]: Start difference. First operand 84 states and 120 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 17:15:26,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:15:26,064 INFO L93 Difference]: Finished difference Result 167 states and 240 transitions. [2024-11-08 17:15:26,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:15:26,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2024-11-08 17:15:26,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:15:26,067 INFO L225 Difference]: With dead ends: 167 [2024-11-08 17:15:26,067 INFO L226 Difference]: Without dead ends: 86 [2024-11-08 17:15:26,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:15:26,069 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 0 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:15:26,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 343 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:15:26,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-08 17:15:26,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-08 17:15:26,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 78 states have (on average 1.4102564102564104) internal successors, (110), 78 states have internal predecessors, (110), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:15:26,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 122 transitions. [2024-11-08 17:15:26,079 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 122 transitions. Word has length 73 [2024-11-08 17:15:26,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:15:26,081 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 122 transitions. [2024-11-08 17:15:26,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 17:15:26,081 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 122 transitions. [2024-11-08 17:15:26,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 17:15:26,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:26,083 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:26,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-08 17:15:26,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:15:26,284 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:15:26,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:26,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1195076146, now seen corresponding path program 1 times [2024-11-08 17:15:26,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:15:26,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739880586] [2024-11-08 17:15:26,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:26,287 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:15:26,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 17:15:26,290 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 17:15:26,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 [2024-11-08 17:15:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:26,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:15:26,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:15:26,875 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 17:15:26,876 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:15:26,876 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:15:26,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739880586] [2024-11-08 17:15:26,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739880586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:15:26,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:15:26,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:15:26,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107572085] [2024-11-08 17:15:26,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:15:26,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:15:26,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:15:26,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:15:26,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:15:26,880 INFO L87 Difference]: Start difference. First operand 86 states and 122 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:15:27,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:15:27,078 INFO L93 Difference]: Finished difference Result 176 states and 251 transitions. [2024-11-08 17:15:27,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:15:27,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 73 [2024-11-08 17:15:27,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:15:27,080 INFO L225 Difference]: With dead ends: 176 [2024-11-08 17:15:27,081 INFO L226 Difference]: Without dead ends: 93 [2024-11-08 17:15:27,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:15:27,083 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 1 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:15:27,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 544 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:15:27,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-08 17:15:27,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2024-11-08 17:15:27,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 84 states have (on average 1.380952380952381) internal successors, (116), 84 states have internal predecessors, (116), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:15:27,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 128 transitions. [2024-11-08 17:15:27,093 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 128 transitions. Word has length 73 [2024-11-08 17:15:27,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:15:27,094 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 128 transitions. [2024-11-08 17:15:27,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:15:27,095 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 128 transitions. [2024-11-08 17:15:27,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 17:15:27,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:27,097 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:27,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-08 17:15:27,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:15:27,301 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:15:27,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:27,305 INFO L85 PathProgramCache]: Analyzing trace with hash 579931216, now seen corresponding path program 1 times [2024-11-08 17:15:27,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:15:27,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829746888] [2024-11-08 17:15:27,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:27,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:15:27,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 17:15:27,311 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 17:15:27,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 [2024-11-08 17:15:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:27,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:15:27,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:15:27,974 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 17:15:27,976 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:15:27,976 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:15:27,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829746888] [2024-11-08 17:15:27,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829746888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:15:27,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:15:27,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:15:27,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990325189] [2024-11-08 17:15:27,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:15:27,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:15:27,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:15:27,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:15:27,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:15:27,981 INFO L87 Difference]: Start difference. First operand 92 states and 128 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:15:28,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:15:28,233 INFO L93 Difference]: Finished difference Result 184 states and 257 transitions. [2024-11-08 17:15:28,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:15:28,233 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 73 [2024-11-08 17:15:28,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:15:28,235 INFO L225 Difference]: With dead ends: 184 [2024-11-08 17:15:28,235 INFO L226 Difference]: Without dead ends: 95 [2024-11-08 17:15:28,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:15:28,237 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 1 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:15:28,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 646 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:15:28,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-08 17:15:28,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2024-11-08 17:15:28,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 86 states have (on average 1.372093023255814) internal successors, (118), 86 states have internal predecessors, (118), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:15:28,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 130 transitions. [2024-11-08 17:15:28,247 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 130 transitions. Word has length 73 [2024-11-08 17:15:28,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:15:28,247 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 130 transitions. [2024-11-08 17:15:28,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:15:28,248 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 130 transitions. [2024-11-08 17:15:28,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 17:15:28,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:28,249 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:28,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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)] Ended with exit code 0 [2024-11-08 17:15:28,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:15:28,450 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:15:28,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:28,451 INFO L85 PathProgramCache]: Analyzing trace with hash 581778258, now seen corresponding path program 1 times [2024-11-08 17:15:28,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:15:28,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259416191] [2024-11-08 17:15:28,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:28,452 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:15:28,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 17:15:28,453 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 17:15:28,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 [2024-11-08 17:15:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:28,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:15:28,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:15:28,992 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:15:28,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 34 [2024-11-08 17:15:29,115 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 17:15:29,116 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:15:29,116 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:15:29,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259416191] [2024-11-08 17:15:29,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259416191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:15:29,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:15:29,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:15:29,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031322523] [2024-11-08 17:15:29,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:15:29,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:15:29,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:15:29,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:15:29,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:15:29,120 INFO L87 Difference]: Start difference. First operand 94 states and 130 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:15:31,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:15:34,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:15:38,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:15:41,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:15:42,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:15:44,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:15:46,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:15:49,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:15:49,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:15:49,948 INFO L93 Difference]: Finished difference Result 237 states and 328 transitions. [2024-11-08 17:15:49,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:15:49,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 73 [2024-11-08 17:15:49,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:15:49,951 INFO L225 Difference]: With dead ends: 237 [2024-11-08 17:15:49,951 INFO L226 Difference]: Without dead ends: 146 [2024-11-08 17:15:49,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:15:49,953 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 58 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:15:49,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 305 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 20.7s Time] [2024-11-08 17:15:49,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-08 17:15:49,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 100. [2024-11-08 17:15:49,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 92 states have (on average 1.3804347826086956) internal successors, (127), 92 states have internal predecessors, (127), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:15:49,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 139 transitions. [2024-11-08 17:15:49,963 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 139 transitions. Word has length 73 [2024-11-08 17:15:49,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:15:49,964 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 139 transitions. [2024-11-08 17:15:49,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:15:49,965 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 139 transitions. [2024-11-08 17:15:49,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 17:15:49,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:49,966 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:49,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 [2024-11-08 17:15:50,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:15:50,167 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:15:50,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:50,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1006569644, now seen corresponding path program 1 times [2024-11-08 17:15:50,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:15:50,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369019644] [2024-11-08 17:15:50,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:50,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:15:50,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 17:15:50,172 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 17:15:50,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 [2024-11-08 17:15:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:50,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-08 17:15:50,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:15:50,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 17:15:51,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2024-11-08 17:15:51,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 44 [2024-11-08 17:15:52,012 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:15:52,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 47 [2024-11-08 17:15:52,475 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:15:52,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 47 [2024-11-08 17:15:52,527 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:15:52,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 74 [2024-11-08 17:15:52,784 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:15:52,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 138 treesize of output 90 [2024-11-08 17:15:53,022 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:15:53,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 182 treesize of output 68 [2024-11-08 17:15:53,227 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 17:15:53,227 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:15:53,227 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:15:53,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369019644] [2024-11-08 17:15:53,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369019644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:15:53,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:15:53,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:15:53,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562649598] [2024-11-08 17:15:53,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:15:53,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:15:53,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:15:53,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:15:53,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:15:53,230 INFO L87 Difference]: Start difference. First operand 100 states and 139 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 17:15:58,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:16:00,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:16:02,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:16:04,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:16:11,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:16:14,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:16:15,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:16:17,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:16:20,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:16:21,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:16:26,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:16:28,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:16:31,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:16:35,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:16:35,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:16:35,469 INFO L93 Difference]: Finished difference Result 407 states and 563 transitions. [2024-11-08 17:16:35,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:16:35,471 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2024-11-08 17:16:35,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:16:35,473 INFO L225 Difference]: With dead ends: 407 [2024-11-08 17:16:35,473 INFO L226 Difference]: Without dead ends: 310 [2024-11-08 17:16:35,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2024-11-08 17:16:35,475 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 621 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:16:35,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 422 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 41.2s Time] [2024-11-08 17:16:35,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-08 17:16:35,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 137. [2024-11-08 17:16:35,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 121 states have (on average 1.3471074380165289) internal successors, (163), 121 states have internal predecessors, (163), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-08 17:16:35,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 187 transitions. [2024-11-08 17:16:35,499 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 187 transitions. Word has length 73 [2024-11-08 17:16:35,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:16:35,500 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 187 transitions. [2024-11-08 17:16:35,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 17:16:35,501 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 187 transitions. [2024-11-08 17:16:35,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 17:16:35,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:16:35,503 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:16:35,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 [2024-11-08 17:16:35,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:16:35,704 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:16:35,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:16:35,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1004480084, now seen corresponding path program 1 times [2024-11-08 17:16:35,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:16:35,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46608971] [2024-11-08 17:16:35,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:35,705 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:16:35,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 17:16:35,709 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 17:16:35,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 [2024-11-08 17:16:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:36,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:16:36,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:16:36,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 26 [2024-11-08 17:16:36,339 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 17:16:36,339 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:16:36,339 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:16:36,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [46608971] [2024-11-08 17:16:36,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [46608971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:16:36,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:16:36,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:16:36,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785688644] [2024-11-08 17:16:36,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:16:36,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:16:36,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:16:36,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:16:36,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:16:36,347 INFO L87 Difference]: Start difference. First operand 137 states and 187 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:16:40,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:16:43,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:16:47,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:16:51,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:16:54,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:16:55,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:16:59,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:17:00,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:00,572 INFO L93 Difference]: Finished difference Result 397 states and 543 transitions. [2024-11-08 17:17:00,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:17:00,575 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 73 [2024-11-08 17:17:00,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:00,579 INFO L225 Difference]: With dead ends: 397 [2024-11-08 17:17:00,580 INFO L226 Difference]: Without dead ends: 263 [2024-11-08 17:17:00,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:17:00,583 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 106 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:00,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 388 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 24.1s Time] [2024-11-08 17:17:00,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-11-08 17:17:00,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 257. [2024-11-08 17:17:00,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 226 states have (on average 1.3407079646017699) internal successors, (303), 226 states have internal predecessors, (303), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-08 17:17:00,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 351 transitions. [2024-11-08 17:17:00,647 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 351 transitions. Word has length 73 [2024-11-08 17:17:00,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:00,647 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 351 transitions. [2024-11-08 17:17:00,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:17:00,648 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 351 transitions. [2024-11-08 17:17:00,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 17:17:00,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:00,656 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:00,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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)] Ended with exit code 0 [2024-11-08 17:17:00,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:17:00,857 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:17:00,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:00,857 INFO L85 PathProgramCache]: Analyzing trace with hash -583867818, now seen corresponding path program 1 times [2024-11-08 17:17:00,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:17:00,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000753193] [2024-11-08 17:17:00,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:00,858 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:17:00,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 17:17:00,859 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 17:17:00,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (9)] Waiting until timeout for monitored process [2024-11-08 17:17:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:01,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-08 17:17:01,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:01,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 17:17:01,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2024-11-08 17:17:02,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2024-11-08 17:17:02,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2024-11-08 17:17:02,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 34 [2024-11-08 17:17:02,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 61 [2024-11-08 17:17:02,926 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:17:02,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 77 [2024-11-08 17:17:03,307 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:17:03,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 166 treesize of output 64 [2024-11-08 17:17:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 17:17:03,476 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:17:03,476 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:17:03,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000753193] [2024-11-08 17:17:03,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000753193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:17:03,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:17:03,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:17:03,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615934837] [2024-11-08 17:17:03,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:17:03,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:17:03,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:17:03,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:17:03,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:17:03,479 INFO L87 Difference]: Start difference. First operand 257 states and 351 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:17:09,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:17:11,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:17:15,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:17:18,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:17:22,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:17:28,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:17:33,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:17:34,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:17:38,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:17:40,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:17:43,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:17:45,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:17:51,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:17:54,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:17:58,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:18:02,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:18:03,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:18:03,145 INFO L93 Difference]: Finished difference Result 789 states and 1081 transitions. [2024-11-08 17:18:03,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:18:03,146 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 73 [2024-11-08 17:18:03,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:18:03,149 INFO L225 Difference]: With dead ends: 789 [2024-11-08 17:18:03,150 INFO L226 Difference]: Without dead ends: 535 [2024-11-08 17:18:03,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2024-11-08 17:18:03,152 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 489 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 25 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:18:03,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 581 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 693 Invalid, 4 Unknown, 0 Unchecked, 58.9s Time] [2024-11-08 17:18:03,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-08 17:18:03,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 261. [2024-11-08 17:18:03,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 230 states have (on average 1.3347826086956522) internal successors, (307), 230 states have internal predecessors, (307), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-08 17:18:03,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 355 transitions. [2024-11-08 17:18:03,183 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 355 transitions. Word has length 73 [2024-11-08 17:18:03,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:18:03,183 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 355 transitions. [2024-11-08 17:18:03,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:18:03,184 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 355 transitions. [2024-11-08 17:18:03,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 17:18:03,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:18:03,185 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:03,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (9)] Forceful destruction successful, exit code 0 [2024-11-08 17:18:03,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:18:03,387 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:18:03,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:03,387 INFO L85 PathProgramCache]: Analyzing trace with hash -52629486, now seen corresponding path program 1 times [2024-11-08 17:18:03,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:18:03,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146463881] [2024-11-08 17:18:03,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:03,388 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:18:03,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 17:18:03,389 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 17:18:03,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (10)] Waiting until timeout for monitored process [2024-11-08 17:18:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:03,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:18:03,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:18:03,773 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 17:18:03,773 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:18:03,773 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:18:03,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146463881] [2024-11-08 17:18:03,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146463881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:03,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:03,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:18:03,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215957745] [2024-11-08 17:18:03,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:03,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:18:03,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:18:03,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:18:03,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:18:03,776 INFO L87 Difference]: Start difference. First operand 261 states and 355 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:18:03,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:18:03,871 INFO L93 Difference]: Finished difference Result 519 states and 707 transitions. [2024-11-08 17:18:03,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:18:03,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 73 [2024-11-08 17:18:03,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:18:03,874 INFO L225 Difference]: With dead ends: 519 [2024-11-08 17:18:03,875 INFO L226 Difference]: Without dead ends: 261 [2024-11-08 17:18:03,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:18:03,876 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:18:03,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 347 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:18:03,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-08 17:18:03,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2024-11-08 17:18:03,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 230 states have (on average 1.326086956521739) internal successors, (305), 230 states have internal predecessors, (305), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-08 17:18:03,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 353 transitions. [2024-11-08 17:18:03,900 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 353 transitions. Word has length 73 [2024-11-08 17:18:03,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:18:03,902 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 353 transitions. [2024-11-08 17:18:03,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:18:03,902 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 353 transitions. [2024-11-08 17:18:03,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-08 17:18:03,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:18:03,904 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:03,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (10)] Ended with exit code 0 [2024-11-08 17:18:04,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:18:04,107 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:18:04,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:04,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1134772659, now seen corresponding path program 1 times [2024-11-08 17:18:04,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:18:04,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828302427] [2024-11-08 17:18:04,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:04,109 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:18:04,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 17:18:04,110 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 17:18:04,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (11)] Waiting until timeout for monitored process [2024-11-08 17:18:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:04,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 17:18:04,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:18:04,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 17 [2024-11-08 17:18:05,047 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 17:18:05,047 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:18:05,048 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:18:05,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828302427] [2024-11-08 17:18:05,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828302427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:05,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:05,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-08 17:18:05,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633177261] [2024-11-08 17:18:05,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:05,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:18:05,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:18:05,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:18:05,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:18:05,050 INFO L87 Difference]: Start difference. First operand 261 states and 353 transitions. Second operand has 11 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-08 17:18:08,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:18:11,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:18:14,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:18:16,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:18:18,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:18:19,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:18:19,096 INFO L93 Difference]: Finished difference Result 543 states and 710 transitions. [2024-11-08 17:18:19,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 17:18:19,097 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 74 [2024-11-08 17:18:19,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:18:19,100 INFO L225 Difference]: With dead ends: 543 [2024-11-08 17:18:19,100 INFO L226 Difference]: Without dead ends: 285 [2024-11-08 17:18:19,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-11-08 17:18:19,102 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 95 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:18:19,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 312 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2024-11-08 17:18:19,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-08 17:18:19,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 154. [2024-11-08 17:18:19,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 134 states have (on average 1.2761194029850746) internal successors, (171), 134 states have internal predecessors, (171), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-08 17:18:19,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 195 transitions. [2024-11-08 17:18:19,121 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 195 transitions. Word has length 74 [2024-11-08 17:18:19,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:18:19,121 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 195 transitions. [2024-11-08 17:18:19,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-08 17:18:19,122 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 195 transitions. [2024-11-08 17:18:19,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-08 17:18:19,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:18:19,123 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:19,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (11)] Ended with exit code 0 [2024-11-08 17:18:19,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:18:19,324 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:18:19,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:19,325 INFO L85 PathProgramCache]: Analyzing trace with hash 744109924, now seen corresponding path program 1 times [2024-11-08 17:18:19,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:18:19,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250359200] [2024-11-08 17:18:19,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:19,325 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:18:19,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 17:18:19,326 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 17:18:19,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (12)] Waiting until timeout for monitored process [2024-11-08 17:18:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:19,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 17:18:19,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:18:19,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 17:18:20,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2024-11-08 17:18:20,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 44 [2024-11-08 17:18:21,018 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:18:21,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 57 [2024-11-08 17:18:21,665 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:18:21,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 111 treesize of output 60 [2024-11-08 17:18:21,725 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:18:21,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 141 treesize of output 87 [2024-11-08 17:18:21,968 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:18:21,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 148 treesize of output 103 [2024-11-08 17:18:22,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:18:22,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 192 treesize of output 72 [2024-11-08 17:18:23,020 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 17:18:23,020 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:18:23,020 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:18:23,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250359200] [2024-11-08 17:18:23,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250359200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:23,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:23,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-08 17:18:23,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591368610] [2024-11-08 17:18:23,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:23,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 17:18:23,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:18:23,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 17:18:23,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:18:23,023 INFO L87 Difference]: Start difference. First operand 154 states and 195 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-08 17:18:27,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:18:30,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:18:36,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:18:40,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:18:44,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:18:46,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:18:50,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:18:53,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:18:56,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:19:00,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:19:02,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:19:02,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:19:02,326 INFO L93 Difference]: Finished difference Result 409 states and 528 transitions. [2024-11-08 17:19:02,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:19:02,327 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 74 [2024-11-08 17:19:02,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:19:02,328 INFO L225 Difference]: With dead ends: 409 [2024-11-08 17:19:02,328 INFO L226 Difference]: Without dead ends: 258 [2024-11-08 17:19:02,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2024-11-08 17:19:02,330 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 387 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:19:02,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 482 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 575 Invalid, 1 Unknown, 0 Unchecked, 38.0s Time] [2024-11-08 17:19:02,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-08 17:19:02,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 154. [2024-11-08 17:19:02,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 134 states have (on average 1.2761194029850746) internal successors, (171), 134 states have internal predecessors, (171), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-08 17:19:02,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 195 transitions. [2024-11-08 17:19:02,348 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 195 transitions. Word has length 74 [2024-11-08 17:19:02,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:19:02,348 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 195 transitions. [2024-11-08 17:19:02,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-08 17:19:02,349 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 195 transitions. [2024-11-08 17:19:02,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-08 17:19:02,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:19:02,350 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:19:02,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (12)] Ended with exit code 0 [2024-11-08 17:19:02,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:19:02,553 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:19:02,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:02,553 INFO L85 PathProgramCache]: Analyzing trace with hash -844237978, now seen corresponding path program 1 times [2024-11-08 17:19:02,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:19:02,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456412256] [2024-11-08 17:19:02,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:02,554 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:19:02,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 17:19:02,558 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 17:19:02,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (13)] Waiting until timeout for monitored process [2024-11-08 17:19:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:03,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-08 17:19:03,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:19:03,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 17:19:03,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2024-11-08 17:19:03,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 44 [2024-11-08 17:19:04,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:19:04,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 57 [2024-11-08 17:19:04,733 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:19:04,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 111 treesize of output 60 [2024-11-08 17:19:04,785 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:19:04,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 141 treesize of output 87 [2024-11-08 17:19:05,026 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:19:05,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 148 treesize of output 103 [2024-11-08 17:19:06,604 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:19:06,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 244 treesize of output 94 [2024-11-08 17:19:06,830 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 17:19:06,830 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:19:06,831 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:19:06,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456412256] [2024-11-08 17:19:06,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456412256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:19:06,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:19:06,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-08 17:19:06,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58361974] [2024-11-08 17:19:06,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:19:06,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 17:19:06,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:19:06,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 17:19:06,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:19:06,834 INFO L87 Difference]: Start difference. First operand 154 states and 195 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-08 17:19:12,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:19:15,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:19:19,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:19:24,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:19:27,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:19:31,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:19:36,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:19:38,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:19:43,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:19:47,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:19:51,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:19:52,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:19:53,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:19:53,479 INFO L93 Difference]: Finished difference Result 411 states and 530 transitions. [2024-11-08 17:19:53,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 17:19:53,480 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 74 [2024-11-08 17:19:53,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:19:53,482 INFO L225 Difference]: With dead ends: 411 [2024-11-08 17:19:53,482 INFO L226 Difference]: Without dead ends: 260 [2024-11-08 17:19:53,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=206, Invalid=724, Unknown=0, NotChecked=0, Total=930 [2024-11-08 17:19:53,483 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 514 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 20 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:19:53,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 626 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 749 Invalid, 3 Unknown, 0 Unchecked, 44.8s Time] [2024-11-08 17:19:53,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-08 17:19:53,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 164. [2024-11-08 17:19:53,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 144 states have (on average 1.2847222222222223) internal successors, (185), 144 states have internal predecessors, (185), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-08 17:19:53,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 209 transitions. [2024-11-08 17:19:53,504 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 209 transitions. Word has length 74 [2024-11-08 17:19:53,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:19:53,505 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 209 transitions. [2024-11-08 17:19:53,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-08 17:19:53,505 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 209 transitions. [2024-11-08 17:19:53,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-08 17:19:53,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:19:53,507 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:19:53,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (13)] Forceful destruction successful, exit code 0 [2024-11-08 17:19:53,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:19:53,708 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:19:53,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:53,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1938047022, now seen corresponding path program 1 times [2024-11-08 17:19:53,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:19:53,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2147373967] [2024-11-08 17:19:53,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:53,709 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:19:53,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 17:19:53,710 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 17:19:53,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (14)] Waiting until timeout for monitored process [2024-11-08 17:19:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:54,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 17:19:54,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:19:54,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 17:19:54,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2024-11-08 17:19:55,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2024-11-08 17:19:55,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2024-11-08 17:19:55,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 32 [2024-11-08 17:19:55,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 59 [2024-11-08 17:19:55,745 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:19:55,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 75 [2024-11-08 17:19:55,921 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:19:55,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 170 treesize of output 62 [2024-11-08 17:19:56,078 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-08 17:19:56,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:19:56,437 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 17:19:56,438 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:19:56,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2147373967] [2024-11-08 17:19:56,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2147373967] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 17:19:56,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:19:56,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2024-11-08 17:19:56,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159008589] [2024-11-08 17:19:56,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:19:56,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:19:56,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:19:56,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:19:56,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:19:56,440 INFO L87 Difference]: Start difference. First operand 164 states and 209 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:19:59,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:20:01,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:20:06,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:20:08,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:20:12,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:20:13,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:20:13,191 INFO L93 Difference]: Finished difference Result 321 states and 408 transitions. [2024-11-08 17:20:13,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:20:13,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 75 [2024-11-08 17:20:13,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:20:13,195 INFO L225 Difference]: With dead ends: 321 [2024-11-08 17:20:13,195 INFO L226 Difference]: Without dead ends: 160 [2024-11-08 17:20:13,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:20:13,196 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 67 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:20:13,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 176 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 2 Unknown, 0 Unchecked, 16.7s Time] [2024-11-08 17:20:13,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-08 17:20:13,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-11-08 17:20:13,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 140 states have (on average 1.2642857142857142) internal successors, (177), 140 states have internal predecessors, (177), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-08 17:20:13,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 201 transitions. [2024-11-08 17:20:13,212 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 201 transitions. Word has length 75 [2024-11-08 17:20:13,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:20:13,213 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 201 transitions. [2024-11-08 17:20:13,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:20:13,213 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 201 transitions. [2024-11-08 17:20:13,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-08 17:20:13,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:20:13,214 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:20:13,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (14)] Ended with exit code 0 [2024-11-08 17:20:13,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:20:13,415 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:20:13,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:20:13,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1934218448, now seen corresponding path program 1 times [2024-11-08 17:20:13,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:20:13,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893358072] [2024-11-08 17:20:13,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:20:13,416 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:20:13,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 17:20:13,417 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 17:20:13,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (15)] Waiting until timeout for monitored process [2024-11-08 17:20:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:20:13,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-08 17:20:13,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:20:13,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 17:20:14,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2024-11-08 17:20:14,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 42 [2024-11-08 17:20:15,290 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:20:15,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 45 [2024-11-08 17:20:15,745 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:20:15,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 45 [2024-11-08 17:20:15,797 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:20:15,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 72 [2024-11-08 17:20:15,996 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:20:15,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 136 treesize of output 88 [2024-11-08 17:20:16,601 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:20:16,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 174 treesize of output 66 [2024-11-08 17:20:16,823 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 17:20:16,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:20:17,377 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:20:17,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893358072] [2024-11-08 17:20:17,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893358072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:20:17,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355960350] [2024-11-08 17:20:17,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:20:17,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:20:17,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:20:17,380 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:20:17,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 17:20:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:20:17,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 17:20:17,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:20:18,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2024-11-08 17:20:18,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 44 [2024-11-08 17:20:19,224 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:20:19,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 47 [2024-11-08 17:20:19,627 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:20:19,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 47 [2024-11-08 17:20:19,672 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:20:19,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 74 [2024-11-08 17:20:19,933 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:20:19,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 138 treesize of output 90 [2024-11-08 17:20:20,556 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:20:20,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 176 treesize of output 68 [2024-11-08 17:20:20,842 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 17:20:20,843 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:20:20,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355960350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:20:20,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:20:20,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 23 [2024-11-08 17:20:20,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695196757] [2024-11-08 17:20:20,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:20:20,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 17:20:20,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:20:20,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 17:20:20,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2024-11-08 17:20:20,846 INFO L87 Difference]: Start difference. First operand 160 states and 201 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 17:20:24,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:20:28,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:20:33,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:20:35,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:20:38,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:20:42,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:20:45,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:20:52,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:20:56,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:21:00,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:21:03,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:21:08,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:21:11,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:21:12,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:12,271 INFO L93 Difference]: Finished difference Result 473 states and 601 transitions. [2024-11-08 17:21:12,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:21:12,273 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 75 [2024-11-08 17:21:12,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:12,274 INFO L225 Difference]: With dead ends: 473 [2024-11-08 17:21:12,275 INFO L226 Difference]: Without dead ends: 316 [2024-11-08 17:21:12,276 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=210, Invalid=980, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 17:21:12,276 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 497 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 20 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:12,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 697 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 691 Invalid, 3 Unknown, 0 Unchecked, 50.4s Time] [2024-11-08 17:21:12,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-11-08 17:21:12,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 205. [2024-11-08 17:21:12,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 175 states have (on average 1.24) internal successors, (217), 175 states have internal predecessors, (217), 18 states have call successors, (18), 11 states have call predecessors, (18), 11 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-08 17:21:12,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 253 transitions. [2024-11-08 17:21:12,305 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 253 transitions. Word has length 75 [2024-11-08 17:21:12,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:12,305 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 253 transitions. [2024-11-08 17:21:12,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 17:21:12,306 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 253 transitions. [2024-11-08 17:21:12,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-08 17:21:12,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:12,307 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:12,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (15)] Forceful destruction successful, exit code 0 [2024-11-08 17:21:12,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-08 17:21:12,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:21:12,708 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:12,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:12,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1144595122, now seen corresponding path program 1 times [2024-11-08 17:21:12,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:21:12,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428469395] [2024-11-08 17:21:12,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:12,709 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:21:12,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 17:21:12,710 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 17:21:12,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (17)] Waiting until timeout for monitored process [2024-11-08 17:21:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:13,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:21:13,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:21:13,187 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-08 17:21:13,187 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:21:13,187 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:21:13,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428469395] [2024-11-08 17:21:13,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428469395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:13,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:13,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:21:13,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282944828] [2024-11-08 17:21:13,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:13,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:21:13,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:21:13,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:21:13,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:21:13,190 INFO L87 Difference]: Start difference. First operand 205 states and 253 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 17:21:13,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:13,550 INFO L93 Difference]: Finished difference Result 415 states and 512 transitions. [2024-11-08 17:21:13,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:21:13,551 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 75 [2024-11-08 17:21:13,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:13,552 INFO L225 Difference]: With dead ends: 415 [2024-11-08 17:21:13,553 INFO L226 Difference]: Without dead ends: 211 [2024-11-08 17:21:13,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:21:13,554 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 1 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:13,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 504 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:21:13,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-08 17:21:13,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 205. [2024-11-08 17:21:13,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 175 states have (on average 1.2285714285714286) internal successors, (215), 175 states have internal predecessors, (215), 18 states have call successors, (18), 11 states have call predecessors, (18), 11 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-08 17:21:13,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 251 transitions. [2024-11-08 17:21:13,573 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 251 transitions. Word has length 75 [2024-11-08 17:21:13,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:13,574 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 251 transitions. [2024-11-08 17:21:13,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 17:21:13,574 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 251 transitions. [2024-11-08 17:21:13,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-08 17:21:13,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:13,575 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:13,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (17)] Ended with exit code 0 [2024-11-08 17:21:13,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:21:13,776 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:13,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:13,777 INFO L85 PathProgramCache]: Analyzing trace with hash -25760658, now seen corresponding path program 1 times [2024-11-08 17:21:13,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:21:13,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755819331] [2024-11-08 17:21:13,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:13,778 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:21:13,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 17:21:13,781 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 17:21:13,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (18)] Waiting until timeout for monitored process [2024-11-08 17:21:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:14,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 17:21:14,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:21:14,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 43 [2024-11-08 17:21:14,644 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-08 17:21:14,644 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:21:14,644 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:21:14,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755819331] [2024-11-08 17:21:14,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755819331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:14,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:14,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 17:21:14,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479071813] [2024-11-08 17:21:14,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:14,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 17:21:14,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:21:14,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 17:21:14,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:21:14,646 INFO L87 Difference]: Start difference. First operand 205 states and 251 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 17:21:19,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:21:21,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:21:24,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:21:29,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:21:32,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:21:32,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:32,734 INFO L93 Difference]: Finished difference Result 381 states and 466 transitions. [2024-11-08 17:21:32,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:21:32,735 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 75 [2024-11-08 17:21:32,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:32,736 INFO L225 Difference]: With dead ends: 381 [2024-11-08 17:21:32,737 INFO L226 Difference]: Without dead ends: 170 [2024-11-08 17:21:32,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-11-08 17:21:32,738 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 107 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:32,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 510 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 319 Invalid, 1 Unknown, 0 Unchecked, 17.7s Time] [2024-11-08 17:21:32,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-08 17:21:32,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 166. [2024-11-08 17:21:32,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 145 states have (on average 1.2413793103448276) internal successors, (180), 145 states have internal predecessors, (180), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-08 17:21:32,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 204 transitions. [2024-11-08 17:21:32,756 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 204 transitions. Word has length 75 [2024-11-08 17:21:32,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:32,757 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 204 transitions. [2024-11-08 17:21:32,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 17:21:32,757 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 204 transitions. [2024-11-08 17:21:32,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-08 17:21:32,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:32,758 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:32,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (18)] Ended with exit code 0 [2024-11-08 17:21:32,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:21:32,959 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:32,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:32,959 INFO L85 PathProgramCache]: Analyzing trace with hash -959026216, now seen corresponding path program 1 times [2024-11-08 17:21:32,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:21:32,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695579911] [2024-11-08 17:21:32,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:32,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:21:32,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 17:21:32,961 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 17:21:32,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (19)] Waiting until timeout for monitored process [2024-11-08 17:21:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:33,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 17:21:33,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:21:33,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 17:21:33,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2024-11-08 17:21:33,756 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:21:33,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 33 [2024-11-08 17:21:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 17:21:33,848 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:21:33,849 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:21:33,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695579911] [2024-11-08 17:21:33,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695579911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:33,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:33,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:21:33,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535586833] [2024-11-08 17:21:33,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:33,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:21:33,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:21:33,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:21:33,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:21:33,851 INFO L87 Difference]: Start difference. First operand 166 states and 204 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:21:37,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:21:42,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:21:44,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:21:47,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:21:50,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:21:54,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:21:55,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:55,130 INFO L93 Difference]: Finished difference Result 467 states and 576 transitions. [2024-11-08 17:21:55,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:21:55,131 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 76 [2024-11-08 17:21:55,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:55,133 INFO L225 Difference]: With dead ends: 467 [2024-11-08 17:21:55,133 INFO L226 Difference]: Without dead ends: 304 [2024-11-08 17:21:55,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:21:55,133 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 85 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:55,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 464 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 243 Invalid, 1 Unknown, 0 Unchecked, 21.1s Time] [2024-11-08 17:21:55,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-08 17:21:55,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 190. [2024-11-08 17:21:55,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 169 states have (on average 1.272189349112426) internal successors, (215), 169 states have internal predecessors, (215), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-08 17:21:55,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 239 transitions. [2024-11-08 17:21:55,159 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 239 transitions. Word has length 76 [2024-11-08 17:21:55,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:55,159 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 239 transitions. [2024-11-08 17:21:55,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:21:55,160 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 239 transitions. [2024-11-08 17:21:55,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-08 17:21:55,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:55,161 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:55,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (19)] Forceful destruction successful, exit code 0 [2024-11-08 17:21:55,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:21:55,362 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:55,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:55,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1046423094, now seen corresponding path program 1 times [2024-11-08 17:21:55,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:21:55,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290581955] [2024-11-08 17:21:55,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:55,363 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:21:55,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 17:21:55,364 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 17:21:55,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (20)] Waiting until timeout for monitored process [2024-11-08 17:21:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:55,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:21:55,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:21:55,789 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 17:21:55,789 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:21:55,789 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:21:55,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290581955] [2024-11-08 17:21:55,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290581955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:55,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:55,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:21:55,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121770499] [2024-11-08 17:21:55,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:55,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:21:55,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:21:55,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:21:55,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:21:55,792 INFO L87 Difference]: Start difference. First operand 190 states and 239 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:21:55,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:55,962 INFO L93 Difference]: Finished difference Result 383 states and 483 transitions. [2024-11-08 17:21:55,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:21:55,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 76 [2024-11-08 17:21:55,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:55,964 INFO L225 Difference]: With dead ends: 383 [2024-11-08 17:21:55,964 INFO L226 Difference]: Without dead ends: 196 [2024-11-08 17:21:55,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:21:55,966 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 0 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:55,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 422 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:21:55,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-08 17:21:55,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 192. [2024-11-08 17:21:55,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 171 states have (on average 1.2690058479532165) internal successors, (217), 171 states have internal predecessors, (217), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-08 17:21:55,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 241 transitions. [2024-11-08 17:21:55,990 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 241 transitions. Word has length 76 [2024-11-08 17:21:55,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:55,990 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 241 transitions. [2024-11-08 17:21:55,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:21:55,990 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 241 transitions. [2024-11-08 17:21:55,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-08 17:21:55,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:55,992 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:56,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (20)] Ended with exit code 0 [2024-11-08 17:21:56,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:21:56,193 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:56,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:56,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1832913354, now seen corresponding path program 1 times [2024-11-08 17:21:56,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:21:56,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407395812] [2024-11-08 17:21:56,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:56,194 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:21:56,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 17:21:56,197 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 17:21:56,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (21)] Waiting until timeout for monitored process [2024-11-08 17:21:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:56,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 17:21:56,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:21:56,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 17:21:57,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2024-11-08 17:21:57,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2024-11-08 17:21:57,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 42 [2024-11-08 17:21:58,434 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:21:58,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 45 [2024-11-08 17:21:58,475 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:21:58,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 72 [2024-11-08 17:21:58,662 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:21:58,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 136 treesize of output 88 [2024-11-08 17:21:59,417 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:21:59,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 180 treesize of output 66 [2024-11-08 17:21:59,597 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 17:21:59,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:22:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 17:22:00,309 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:22:00,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407395812] [2024-11-08 17:22:00,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1407395812] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 17:22:00,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:22:00,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 18 [2024-11-08 17:22:00,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308896287] [2024-11-08 17:22:00,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:22:00,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:22:00,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:22:00,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:22:00,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-11-08 17:22:00,312 INFO L87 Difference]: Start difference. First operand 192 states and 241 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:22:04,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:22:08,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:22:12,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:22:16,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:22:21,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:22:23,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:22:23,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:22:23,991 INFO L93 Difference]: Finished difference Result 383 states and 481 transitions. [2024-11-08 17:22:23,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:22:23,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 76 [2024-11-08 17:22:23,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:22:23,996 INFO L225 Difference]: With dead ends: 383 [2024-11-08 17:22:23,996 INFO L226 Difference]: Without dead ends: 194 [2024-11-08 17:22:23,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-11-08 17:22:23,997 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 61 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:22:23,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 203 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 4 Unknown, 0 Unchecked, 23.6s Time] [2024-11-08 17:22:23,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-08 17:22:24,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 190. [2024-11-08 17:22:24,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 169 states have (on average 1.2603550295857988) internal successors, (213), 169 states have internal predecessors, (213), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-08 17:22:24,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 237 transitions. [2024-11-08 17:22:24,025 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 237 transitions. Word has length 76 [2024-11-08 17:22:24,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:22:24,025 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 237 transitions. [2024-11-08 17:22:24,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:22:24,026 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 237 transitions. [2024-11-08 17:22:24,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-08 17:22:24,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:22:24,027 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:22:24,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (21)] Forceful destruction successful, exit code 0 [2024-11-08 17:22:24,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:22:24,228 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:22:24,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:22:24,228 INFO L85 PathProgramCache]: Analyzing trace with hash 244565452, now seen corresponding path program 1 times [2024-11-08 17:22:24,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:22:24,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452316730] [2024-11-08 17:22:24,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:22:24,229 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:22:24,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 17:22:24,230 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 17:22:24,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (22)] Waiting until timeout for monitored process [2024-11-08 17:22:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:24,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-08 17:22:24,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:22:24,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 17:22:25,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2024-11-08 17:22:25,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2024-11-08 17:22:25,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2024-11-08 17:22:26,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 32 [2024-11-08 17:22:26,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 59 [2024-11-08 17:22:26,319 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:22:26,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 75 [2024-11-08 17:22:27,471 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:22:27,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 222 treesize of output 84 [2024-11-08 17:22:27,664 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-08 17:22:27,664 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:22:29,425 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 17:22:29,425 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:22:29,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452316730] [2024-11-08 17:22:29,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452316730] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 17:22:29,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:22:29,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 25 [2024-11-08 17:22:29,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194882371] [2024-11-08 17:22:29,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:22:29,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:22:29,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:22:29,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:22:29,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2024-11-08 17:22:29,428 INFO L87 Difference]: Start difference. First operand 190 states and 237 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:22:34,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:22:36,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:22:39,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:22:42,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:22:47,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:22:49,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:22:52,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:22:55,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:22:56,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:22:56,229 INFO L93 Difference]: Finished difference Result 442 states and 554 transitions. [2024-11-08 17:22:56,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:22:56,231 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 76 [2024-11-08 17:22:56,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:22:56,233 INFO L225 Difference]: With dead ends: 442 [2024-11-08 17:22:56,233 INFO L226 Difference]: Without dead ends: 255 [2024-11-08 17:22:56,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=176, Invalid=636, Unknown=0, NotChecked=0, Total=812 [2024-11-08 17:22:56,235 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 169 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:22:56,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 463 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 313 Invalid, 1 Unknown, 0 Unchecked, 26.4s Time] [2024-11-08 17:22:56,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-08 17:22:56,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 178. [2024-11-08 17:22:56,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 157 states have (on average 1.2484076433121019) internal successors, (196), 157 states have internal predecessors, (196), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-08 17:22:56,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 220 transitions. [2024-11-08 17:22:56,259 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 220 transitions. Word has length 76 [2024-11-08 17:22:56,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:22:56,260 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 220 transitions. [2024-11-08 17:22:56,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:22:56,261 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 220 transitions. [2024-11-08 17:22:56,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-08 17:22:56,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:22:56,262 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:22:56,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (22)] Forceful destruction successful, exit code 0 [2024-11-08 17:22:56,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:22:56,463 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:22:56,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:22:56,463 INFO L85 PathProgramCache]: Analyzing trace with hash -559016413, now seen corresponding path program 1 times [2024-11-08 17:22:56,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:22:56,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461903073] [2024-11-08 17:22:56,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:22:56,464 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:22:56,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 17:22:56,465 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 17:22:56,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (23)] Waiting until timeout for monitored process [2024-11-08 17:22:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:56,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 17:22:56,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:22:57,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 45 [2024-11-08 17:22:57,234 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 17:22:57,234 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:22:57,235 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:22:57,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461903073] [2024-11-08 17:22:57,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461903073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:22:57,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:22:57,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:22:57,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935572085] [2024-11-08 17:22:57,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:22:57,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:22:57,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:22:57,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:22:57,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:22:57,238 INFO L87 Difference]: Start difference. First operand 178 states and 220 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:23:01,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:23:05,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:23:07,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:23:11,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:23:15,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:23:17,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:23:21,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:23:22,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:22,968 INFO L93 Difference]: Finished difference Result 487 states and 598 transitions. [2024-11-08 17:23:22,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:23:22,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 77 [2024-11-08 17:23:22,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:22,971 INFO L225 Difference]: With dead ends: 487 [2024-11-08 17:23:22,971 INFO L226 Difference]: Without dead ends: 310 [2024-11-08 17:23:22,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:23:22,973 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 85 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:22,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 718 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 405 Invalid, 1 Unknown, 0 Unchecked, 25.6s Time] [2024-11-08 17:23:22,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-08 17:23:23,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 184. [2024-11-08 17:23:23,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 163 states have (on average 1.2392638036809815) internal successors, (202), 163 states have internal predecessors, (202), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-08 17:23:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 226 transitions. [2024-11-08 17:23:23,009 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 226 transitions. Word has length 77 [2024-11-08 17:23:23,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:23,009 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 226 transitions. [2024-11-08 17:23:23,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:23:23,010 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 226 transitions. [2024-11-08 17:23:23,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-08 17:23:23,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:23,013 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:23,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (23)] Ended with exit code 0 [2024-11-08 17:23:23,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:23:23,214 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:23:23,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:23,215 INFO L85 PathProgramCache]: Analyzing trace with hash 591802059, now seen corresponding path program 1 times [2024-11-08 17:23:23,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:23:23,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578382996] [2024-11-08 17:23:23,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:23,216 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:23:23,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 17:23:23,220 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 17:23:23,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (24)] Waiting until timeout for monitored process [2024-11-08 17:23:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:23,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 17:23:23,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:24,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 17:23:32,300 WARN L286 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:23:49,241 WARN L286 SmtUtils]: Spent 6.82s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-08 17:23:55,716 WARN L286 SmtUtils]: Spent 6.47s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:23:55,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 40 [2024-11-08 17:24:03,424 WARN L286 SmtUtils]: Spent 7.70s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:24:23,888 WARN L286 SmtUtils]: Spent 9.61s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-08 17:24:31,223 WARN L286 SmtUtils]: Spent 7.33s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:24:37,663 WARN L286 SmtUtils]: Spent 6.41s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:24:41,701 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int#1| |c_~#WrapperStruct00~0.base|))) (let ((.cse1 (let ((.cse2 (select .cse0 |c_~#WrapperStruct00~0.offset|))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (and (exists ((|v_ULTIMATE.start_step_#t~ite23#1_12| (_ BitVec 32))) (= ((_ sign_extend 16) ((_ extract 15 0) |v_ULTIMATE.start_step_#t~ite23#1_12|)) (select .cse0 (bvadd (_ bv12 32) |c_~#WrapperStruct00~0.offset|)))) (= .cse1 |c_ULTIMATE.start_step_#t~ite30#1|) (exists ((|v_ULTIMATE.start_step_#t~mem16#1_17| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_step_#t~mem14#1_17| (_ FloatingPoint 8 24))) (fp.gt (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_step_#t~mem14#1_17|) ((_ to_fp 11 53) roundNearestTiesToEven (/ 65.0 8.0))) ((_ to_fp 11 53) roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_step_#t~mem16#1_17|))))))) is different from false [2024-11-08 17:24:41,831 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:24:41,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 45 [2024-11-08 17:24:52,289 WARN L286 SmtUtils]: Spent 6.65s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:24:57,477 WARN L286 SmtUtils]: Spent 5.19s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:25:30,919 WARN L286 SmtUtils]: Spent 9.02s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-08 17:25:30,993 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 17:25:30,994 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:25:30,994 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:25:30,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578382996] [2024-11-08 17:25:30,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1578382996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:25:30,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:25:30,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:25:30,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005391112] [2024-11-08 17:25:30,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:25:30,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:25:30,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:25:30,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:25:30,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=5, NotChecked=10, Total=56 [2024-11-08 17:25:30,996 INFO L87 Difference]: Start difference. First operand 184 states and 226 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:25:32,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:25:36,196 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int#1| |c_~#WrapperStruct00~0.base|))) (and (exists ((|v_ULTIMATE.start_step_#t~ite23#1_12| (_ BitVec 32))) (= ((_ sign_extend 16) ((_ extract 15 0) |v_ULTIMATE.start_step_#t~ite23#1_12|)) (select .cse0 (bvadd (_ bv12 32) |c_~#WrapperStruct00~0.offset|)))) (exists ((|v_ULTIMATE.start_step_#t~mem16#1_17| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_step_#t~mem14#1_17| (_ FloatingPoint 8 24))) (fp.gt (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_step_#t~mem14#1_17|) ((_ to_fp 11 53) roundNearestTiesToEven (/ 65.0 8.0))) ((_ to_fp 11 53) roundNearestTiesToEven (fp.mul roundNearestTiesToEven (let ((.cse1 (select .cse0 |c_~#WrapperStruct00~0.offset|))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))) |v_ULTIMATE.start_step_#t~mem16#1_17|)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2024-11-08 17:25:38,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:25:40,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:25:43,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:25:44,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:25:47,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:25:48,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:25:50,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:25:57,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:25:59,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:26:01,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:26:02,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:26:04,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:26:08,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:26:11,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:26:14,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:26:19,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:26:41,513 WARN L286 SmtUtils]: Spent 10.81s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-08 17:26:45,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:26:49,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:26:53,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:26:57,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:27:01,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:27:05,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:27:08,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:27:13,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:27:15,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:27:19,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:27:22,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:27:26,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:27:29,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:27:30,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:27:33,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:27:36,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:27:41,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:27:43,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:27:47,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:27:50,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:27:53,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:27:57,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:27:58,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:28:01,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:28:04,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:28:06,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:28:09,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:28:13,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:28:15,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:28:19,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:28:23,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:28:25,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:28:29,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:28:33,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:28:38,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:28:41,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:28:45,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:28:49,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:28:53,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:28:55,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:28:57,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:29:00,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:29:01,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:29:03,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:29:05,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:29:06,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:29:10,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:29:14,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:29:17,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:29:19,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:29:21,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:29:25,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 17:29:27,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:29:29,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:29:33,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:29:35,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:29:38,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:29:40,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:29:40,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:29:40,597 INFO L93 Difference]: Finished difference Result 520 states and 638 transitions. [2024-11-08 17:29:40,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:29:40,599 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 77 [2024-11-08 17:29:40,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:29:40,601 INFO L225 Difference]: With dead ends: 520 [2024-11-08 17:29:40,601 INFO L226 Difference]: Without dead ends: 339 [2024-11-08 17:29:40,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 101.4s TimeCoverageRelationStatistics Valid=21, Invalid=37, Unknown=6, NotChecked=26, Total=90 [2024-11-08 17:29:40,602 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 74 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 1 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 220.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 223.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:29:40,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 544 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 229 Invalid, 17 Unknown, 165 Unchecked, 223.0s Time] [2024-11-08 17:29:40,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-11-08 17:29:40,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 292. [2024-11-08 17:29:40,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 261 states have (on average 1.2413793103448276) internal successors, (324), 261 states have internal predecessors, (324), 18 states have call successors, (18), 12 states have call predecessors, (18), 12 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-08 17:29:40,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 360 transitions. [2024-11-08 17:29:40,636 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 360 transitions. Word has length 77 [2024-11-08 17:29:40,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:29:40,636 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 360 transitions. [2024-11-08 17:29:40,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 17:29:40,637 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 360 transitions. [2024-11-08 17:29:40,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-08 17:29:40,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:29:40,638 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:29:40,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (24)] Ended with exit code 0 [2024-11-08 17:29:40,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:29:40,838 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:29:40,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:29:40,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1420124195, now seen corresponding path program 1 times [2024-11-08 17:29:40,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:29:40,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84328009] [2024-11-08 17:29:40,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:29:40,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 17:29:40,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 17:29:40,840 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 17:29:40,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bfaaa2-d21c-424c-bb5d-95a84447581d/bin/uautomizer-verify-jihMAELWvX/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 (25)] Waiting until timeout for monitored process [2024-11-08 17:29:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:29:43,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-08 17:29:43,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:29:43,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 17:29:44,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2024-11-08 17:29:44,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2024-11-08 17:29:45,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2024-11-08 17:29:46,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 34 [2024-11-08 17:29:46,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 61 [2024-11-08 17:29:52,810 WARN L286 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 16 DAG size of output: 1 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:30:04,070 WARN L286 SmtUtils]: Spent 5.35s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)